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CN113909605A - Carbon fiber wire and metal wire connecting joint and connecting method thereof - Google Patents

Carbon fiber wire and metal wire connecting joint and connecting method thereof Download PDF

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Publication number
CN113909605A
CN113909605A CN202111237964.4A CN202111237964A CN113909605A CN 113909605 A CN113909605 A CN 113909605A CN 202111237964 A CN202111237964 A CN 202111237964A CN 113909605 A CN113909605 A CN 113909605A
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CN
China
Prior art keywords
carbon fiber
wire
metal
treatment
joint
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111237964.4A
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Chinese (zh)
Inventor
石松林
易华勇
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Beijing Jiajieneng Technology Co ltd
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Beijing Jiajieneng Technology Co ltd
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Priority to CN202111237964.4A priority Critical patent/CN113909605A/en
Publication of CN113909605A publication Critical patent/CN113909605A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/31—Coating with metals
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
    • C23C28/023—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/38—Electroplating: Baths therefor from solutions of copper
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/54—Electroplating of non-metallic surfaces
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/145—Carbon only, e.g. carbon black, graphite

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

The invention relates to a carbon fiber wire and metal wire connecting joint and a connecting method thereof, which realize the connection of the carbon fiber wire and the metal wire; the method comprises the following steps of obtaining a carbon fiber wire through pretreatment, forming a metal layer on the surface of the carbon fiber wire, welding the carbon fiber wire with the metal layer formed on the surface with the metal wire, and reinforcing the welded carbon fiber heating wire and the metal wire to realize the connection and fixation of the carbon fiber wire and the metal wire; the invention converts non-weldable carbon fiber wire into metal-plated joint with strong weldability, and changes the traditional cold and hot line pressure welding and bonding mode into welding mode, thereby improving the connection reliability of the joint. The metal coating is formed on the surface of each carbon fiber wire in the mode, so that each carbon fiber wire can be fully connected with a metal wire, and the conductive capacity of the connector is improved.

Description

Carbon fiber wire and metal wire connecting joint and connecting method thereof
Technical Field
The invention relates to a carbon fiber wire and metal wire connecting joint and a connecting method thereof, which realize the connection of the carbon fiber wire and the metal wire.
Background
In the heating mode using the carbon fiber heating wire as the heating source, the carbon fiber heating wire is required to be connected with the metal wire. Because the carbon fiber wires are made of non-metal materials, the carbon fiber wires cannot be directly connected by welding and other processes like metal materials. But the reliable connection between the carbon fiber heating wire and the metal wire can greatly improve the quality and the service life of the product, and the connection technology is a subject worthy of deep exploration in the industry.
In the prior art, the connection between the carbon fiber heating wire and the metal wire generally adopts a connection mode of crimping, bonding by conductive adhesive or the combination of the two modes. Because the surface of the carbon fiber wire is very smooth, the carbon fiber heating wire and the metal wire are directly in a compression joint mode, the connection strength is low, and the carbon fiber heating wire is easy to fall off. In addition, in the direct crimping process, the carbon fiber wires are stressed unevenly, stress concentration is easily generated at the crimping point, and the phenomenon of carbon fiber wire breakage at the connecting position is caused. Adopt the adhesive bonding mode, the conducting resin that generally uses is conductive metal thick liquid, mainly comprises components such as conductive metal grain and bonding resin, because resin composition exists, its conducting resin's conductivity is lower, and the contact resistance of joint department is great to conducting resin is in long-time cold and hot alternate use in-process, can lead to the risk that joint department drops, and life hardly satisfies the user demand of equipment.
Disclosure of Invention
The invention aims to provide a method for connecting a carbon fiber wire and a metal wire, which increases the current conduction area of the carbon fiber wire, reduces the contact resistance and solves the problem of poor conductivity between the existing carbon fiber heating wire and the metal wire.
The invention is realized by the following steps:
a method for connecting a carbon fiber wire and a metal wire comprises the steps of obtaining the carbon fiber wire through pretreatment, forming a metal layer on the surface of the carbon fiber wire, welding the carbon fiber wire with the metal layer formed on the surface with the metal wire, and reinforcing the welded carbon fiber heating wire and the metal wire to realize the connection and fixation of the carbon fiber wire and the metal wire.
Further, the pretreatment comprises the step of peeling the carbon fiber heating wire to obtain the carbon fiber heating wire.
Further, the pretreatment also comprises degreasing treatment, and the carbon fiber heating wire is degreased at high temperature to obtain the carbon fiber heating wire.
Further, the metal layer forming method comprises the steps of roughening the carbon fiber filaments in sequence, and performing plating treatment on the surfaces of the roughened carbon fiber filaments to form a compact metal layer, wherein the roughening comprises soaking the carbon fiber filaments in roughening liquid for 5-10 minutes.
Further, the plating treatment comprises a first plating treatment and a second plating treatment, wherein the first plating treatment comprises sensitizing, activating and reducing treatment on the coarsened carbon fiber yarn in sequence; sensitizing comprises soaking the coarsened carbon fiber filaments in sensitizing solution for 1-3 minutes; activating the carbon fiber connector, namely soaking the sensitized carbon fiber connector in a metal solution containing catalytic activity for 3-5 minutes; and the reduction comprises the step of soaking the activated carbon fiber joint in a reduction solution for 1-2 minutes to form a first metal coating.
Further, the plating treatment comprises a first plating treatment and a second plating treatment, the first plating treatment comprises electroplating treatment of the coarsened carbon fiber wire, the electroplating treatment specifically comprises the steps of connecting one end of the carbon fiber heating wire to a negative electrode of a power supply, immersing an electrode into electroplating solution, immersing the other end of the carbon fiber heating wire into the electroplating solution, and electroplating to form a first metal plating layer.
Further, the second plating treatment includes a tin plating treatment of the first metal plating layer to form a metal tin film on the surface of the first metal plating layer, that is, the second metal plating layer.
Further, the welding comprises the step of welding the carbon fiber wires attached with the first metal plating layer and the second metal plating layer with the metal wires in a heating mode to form a welding head.
Further, the reinforcement process includes crimping and sleeving.
Further, the compression joint comprises the step of fixing the welding head through a hoop to form a fixing head; the sleeve joint comprises a plurality of layers of polymer sleeves which are arranged outside the fixed head in a fitting mode.
The invention also provides a connecting joint of the carbon fiber wire and the metal wire, which comprises the carbon fiber wire and the metal wire, and the carbon fiber wire and the metal wire are connected and molded by the connecting method.
The beneficial effect of above-mentioned scheme:
the invention provides a carbon fiber wire and metal wire connecting joint and a connecting method thereof, wherein the non-weldable carbon fiber wire is converted into a metal-plated joint with strong weldability, and the traditional cold and hot line pressure welding and bonding mode can be changed into a welding mode, so that the connecting reliability of the joint is improved. The metal coating is formed on the surface of each carbon fiber wire in the mode, so that each carbon fiber wire can be fully connected with a metal wire, and the conductive capacity of the connector is improved.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The following is a detailed description of the method for connecting carbon fibers and metal wires according to the embodiment of the present invention:
a method for connecting carbon fiber wires and metal wires mainly comprises the following steps:
obtaining a carbon fiber heating wire through pretreatment;
forming a metal layer on the surface of the carbon fiber heating wire;
welding the carbon fiber heating wire with the metal layer formed on the surface with the metal wire;
and reinforcing the welded carbon fiber heating wire and the metal wire to realize the connection and fixation of the carbon fiber heating wire and the metal wire.
The pretreatment is mainly to realize the obtaining of the carbon fiber wire and the metal wire, generally, the carbon fiber heating wire and the metal wire are of a multilayer structure, and in the embodiment, the structure of the carbon fiber heating wire is sequentially provided with a pvc anticorrosive layer, a polyethylene insulating layer, a silica gel insulating layer and the carbon fiber wire from outside to inside. The metal wire is sequentially provided with a pvc anticorrosive layer, a polyethylene insulating layer and a tin-plated copper wire from outside to inside.
In this embodiment, the preliminary treatment mainly is the outside multilayer structure to carbon fiber heating wire and skins the processing, skins the processing to the pvc anticorrosive coating, polyethylene insulating layer and the silica gel insulating layer of carbon fiber heating wire and wire promptly, peels off the outer multilayer structure of carbon fiber wire, realizes doing the preliminary treatment for subsequent connection.
The method specifically comprises the following steps: and peeling off the PVC anticorrosive layer, the polyethylene insulating layer and the silica gel insulating layer by using peeling equipment in a layering manner, so that the carbon fiber wires are exposed by 15-20 mm, the silica gel insulating layer is exposed by 5-6 mm, and the polyethylene insulating layer is exposed by 5-6 mm.
Peeling equipment is used for peeling the anticorrosive layer and the polyethylene insulating layer on the outer layer of the metal wire layer by layer, so that the tin-plated copper wire is exposed by 15-20 mm, and the polyethylene insulating layer is exposed by 5-6 mm.
In order to ensure the complete exposure of the carbon fiber yarns, the carbon fiber yarns subjected to peeling treatment are degreased again, so that the residual resin on the surfaces of the carbon fiber yarns is completely removed.
In this embodiment, the degreasing process is to place the carbon fiber yarn after peeling treatment under a high temperature hot air gun, and remove the resin on the surface of the joint of the carbon fiber yarn by using a high temperature method.
The method specifically comprises the following steps: and adjusting the air outlet temperature of the high-temperature hot air gun to 500-550 ℃, placing the exposed part of the carbon fiber yarn under the high-temperature hot air gun for about 30s, and removing the resin on the surface of the exposed carbon fiber yarn to obtain the carbon fiber yarn.
In the embodiment, peeling and degreasing treatment are performed to remove the hierarchical structure on the surface of the carbon fiber yarn, so that the carbon fiber yarn which is complete and has no residual impurities on the surface is obtained. The risk that the joint falls off due to the fact that the contact resistance of the connected carbon fiber wire and the metal wire joint is large because the conductivity of the conductive adhesive is low due to the existence of the resin component is reduced.
In this embodiment, the formation of the metal layer on the surface of the carbon fiber filament mainly includes roughening the carbon fiber filament, and then performing plating treatment to form a dense metal layer.
In the embodiment, the roughening treatment is mainly performed by soaking the carbon fiber filaments in a roughening solution for 5 to 10 minutes. The roughening treatment has the main functions of forming gullies on the surface of the carbon fiber wire under the condition of ensuring the strength of the carbon fiber wire, increasing the contact area of the metal coating and the carbon fiber wire, enhancing the binding force of the coating and the carbon fiber wire and providing a structural foundation for the subsequent formation of a metal layer and the connection.
The components of the coarsening liquid in the embodiment are mainly concentrated nitric acid and concentrated sulfuric acid which are mixed according to equal proportion.
In this embodiment, the plating treatment includes two ways, i.e., electroless plating and electroplating.
In the embodiment, the chemical plating is mainly to perform sensitization, activation and reduction treatment on the carbon fiber wire after the coarsening of the coarsened carbon fiber wire is finished; sensitizing comprises soaking the coarsened carbon fiber filaments in sensitizing solution for 1-3 minutes; activating the carbon fiber connector, namely soaking the sensitized carbon fiber connector in a metal solution containing catalytic activity for 3-5 minutes; and the reduction comprises the step of soaking the activated carbon fiber joint in a reduction solution for 1-2 minutes to form a first metal coating.
The method specifically comprises the following steps: the sensitization treatment is to soak the coarsened carbon fiber joint in a sensitization liquid for 1-3 minutes to enable the surface of the carbon fiber to adsorb a layer of easily oxidized substances; the activation treatment is that the sensitized carbon fiber joint is soaked in a metal solution containing catalytic activity for about 3 minutes, so that a metal layer with catalytic activity is generated on the surface of the carbon fiber joint; the reduction treatment is to treat the activated carbon fiber joint in a reduction solution to form a compact metal layer, namely a first metal plating layer, on the surface of the carbon fiber joint. In this embodiment, the first metal plating layer is preferably a copper plating layer.
In this embodiment, the sensitizing solution is a solution obtained by mixing a tin dichloride solution and a hydrochloric acid solution in a mass ratio of 1:1, wherein the tin dichloride solution is a solution with a mass fraction of 1.5%, and the hydrochloric acid solution is a solution with a mass fraction of 5%;
in this embodiment, the activating solution is a solution obtained by mixing a palladium dichloride solution and a hydrochloric acid solution in a mass ratio of 1:1, wherein the palladium dichloride solution is a solution with a mass fraction of 0.5%, and the hydrochloric acid solution is a solution with a mass fraction of 1%.
In the embodiment, the main components of the reducing solution are 10-20 g/L of copper sulfate, 20-30 g/L of sodium potassium tartrate, 15-25 g/L of disodium ethylenediamine tetraacetic acid, 10-15 mL/L of formaldehyde and 10-20 mg/L of potassium ferrocyanide.
In this embodiment, the electroplating is mainly performed by using the roughened carbon fiber wire as a cathode of an electrode. The electroplating solution is contained in the electroplating bath, the electrode is connected to the positive pole of a power supply, one end of the carbon fiber heating wire is connected to the negative pole of the power supply, the electrode is immersed in the electroplating solution, the other end of the carbon fiber wire is partially immersed in the electroplating solution, and electroplating is carried out by electrifying.
Specifically, the current density of electroplating is kept at 0.80-1.00 mA/cm2, the voltage is 1.5-3.0V, the electroplating temperature is 10-30 ℃, and the electroplating time is 60-90 min. The electroplating solution mainly comprises: CuSO4 & 5H2O, C4H4O6KNa & 4H2O, C6H5Na3O7 & 2H2O, KNO3, polyethylene glycol, NaCl and water.
Wherein, the dosage ratio of CuSO4 & 5H2O, C4H4O6KNa & 4H2O, C6H5Na3O7 & 2H2O, KNO3, polyethylene glycol, NaCl and water is 100 g: 20 g: 180 g: 24 g: 0.1 g: 0.27 g: 1L of the compound.
Wherein CuSO4 & 5H2O is the main salt of the electroplating solution; C4H4O6 KNa.4H2O is used as an auxiliary coordination agent, which can greatly increase the brightness of the plating layer and the current density range, and is beneficial to the normal dissolution of the anode; C6H5Na3O7 & 2H2O is used as a main coordination agent, the content of metallic copper in the solution can be correspondingly improved, so that the allowable working current density and the production efficiency are improved, and a crystalline and dense plating layer can be moved; KNO3 is used as a conductive salt to increase the conductivity of the plating solution; polyethylene glycol is used as a complexing agent, can be directionally arranged and generate adsorption on the interface of the cathode and the plating solution, so that the polarization effect of the cathode is improved, the crystal grains of the copper plating layer are more uniform and compact, and the phenomena of pinholes, black cores or pockmarks generated by the copper plating layer are eliminated; NaCl as an anode activator can promote the normal dissolution of the anode, inhibit the generation of Cu +, improve the brightness and leveling capability of a plating layer and reduce the internal stress of the plating layer. The pH of the electroplating solution is close to neutral, and the electroplating solution is neutral and has no pollution to the environment and the like.
In this embodiment, the first plating layer, that is, the copper plating layer is formed on the surface of the carbon fiber filament, by electroless plating and electroplating, respectively.
In this embodiment, the second plating treatment includes a tin plating treatment of the first metal plating layer, and a metal tin film is formed on the surface of the first metal plating layer, that is, the second metal plating layer.
The method specifically comprises the following steps: and (3) washing the residual chemical copper plating solution on the surface of the copper plating layer by using deionized water for the plated copper-plated carbon fiber wire, and then placing the copper-plated carbon fiber wire into the prepared chemical tin plating solution for chemical tin plating. The temperature of the chemical plating tin is 60-80 ℃, and the plating time is 10-18 min.
In this example, the tin plating solution is stannous chloride, sodium citrate, disodium ethylenediaminetetraacetate, nitrilotriacetic acid, and titanium trichloride.
In this embodiment, in order to ensure the plating effect, the tin-plated carbon fiber wire is cleaned by using deionized water to wash the residual tin plating solution on the surface of the tin plating layer, and then is dried in a drying oven and taken out; the oxidation resistance of the copper-plated carbon fiber wire is improved after the surface of the copper-plated carbon fiber wire is tinned, and the copper-plated carbon fiber wire is dried in a drying oven in the air, wherein the drying temperature is 200-270 ℃;
in the embodiment, because the melting point of the tin plating layer is low, the heat treatment process is two-step heat treatment; the heat treatment is carried out in a vacuum tube furnace, the vacuum degree is minus 0.3Mpa, the protective gas is high-purity argon, and the argon flow rate is 0.8L per minute; heating the dried tin-coated copper carbon fiber from normal temperature at a heating rate of 10 ℃/min to 270 ℃, starting primary heat treatment, and keeping the temperature for 5 hours; after the first heat treatment is finished, furnace cooling is carried out to reduce the temperature to normal temperature, then the temperature is raised from the normal temperature, the temperature raising rate is 8 ℃/min, when the temperature is raised to 800 ℃, the second heat treatment is started, and the heat preservation time is 8 hours; and after the second heat treatment is finished, air cooling to normal temperature to obtain the stable carbon fiber yarn.
In this embodiment, the welding process mainly welds the carbon fiber wires and the metal lead joints after the plating layer is formed.
The method specifically comprises the following steps: the carbon fiber wire and the metal wire are horizontally placed, the metal wire and the carbon fiber connector after being tinned are placed in parallel in an overlapping mode, a tinned layer on the surface of the carbon fiber wire is melted through an electric soldering iron, and the metal wire and the carbon fiber wire after being tinned are welded together.
In this embodiment, tin may be added appropriately at the time of soldering.
In this embodiment, the crimping process mainly fixes the welded connection point.
The method specifically comprises the following steps: use the metal wiring clamp, with the crimping in the middle of wire and the carbon fiber silk joint department, the both ends of clamp crimping respectively on the insulating layer of carbon fiber silk and wire to improve joint electric conductive property, strengthen the anti buckling and the tensile strength who connects.
Wherein, place the joint after will welding on the clamp, on the crosslinked polyethylene insulating layer of carbon fiber silk and wire is arranged respectively in at the both ends of clamp, on welding joint was arranged in to the centre, even crimping point of pressing down the clamp made joint and insulating layer form a complete whole. In this embodiment, in order to ensure the quality and efficiency of the crimping, the crimping process may be performed by using a press.
In this embodiment, the sleeving process mainly performs sleeve protection on the crimped joint for insulation protection.
The method specifically comprises the following steps: the sleeving adopts multilayer sleeving, the first layer is formed by sleeving a double-wall heat-shrinkable tube with a proper cutting length at the joint of the carbon fiber wire, two ends of the double-wall heat-shrinkable tube are respectively positioned on the polyethylene insulating layers of the carbon fiber wire and the metal wire, a hot air gun is used for heating from the middle to the two ends of the double-wall heat-shrinkable tube, and the first layer of the double-wall heat-shrinkable tube is formed in a heat-shrinkable mode.
And the second layer is formed by sleeving a double-wall heat-shrinkable tube with an intercepting length slightly longer than that of the first layer at the joint of the carbon fiber heating wire, enabling two ends of the double-wall heat-shrinkable tube to be respectively positioned on the PVC anticorrosive layers of the carbon fiber heating wire and the metal wire, starting from the middle by using a hot air gun, scanning the two ends of the double-wall heat-shrinkable tube back and forth, and performing heat-shrinkable molding on the second layer double-wall heat-shrinkable tube.
And the third layer is characterized in that a double-wall heat-shrinkable tube with the intercepting length far longer than that of the second layer is sleeved at the joint of the carbon fiber heating line, two ends of the double-wall heat-shrinkable tube are respectively positioned on the PVC anticorrosive layers of the carbon fiber heating line and the metal wire, a hot air gun is used for scanning from the middle to the two ends of the double-wall heat-shrinkable tube back and forth, and the third layer is formed by heat-shrinking the double-wall heat-shrinkable tube.
According to the method for connecting the carbon fiber wire and the metal wire, the carbon fiber wire and the metal wire are bonded through metal adhesion on the surface of the carbon fiber wire, and the non-weldable carbon fiber wire and the metal wire are bonded. And the stability of metal adhesion is realized through different metal adhesion processes.
The embodiment also provides a carbon fiber wire and metal wire connecting joint, which comprises the carbon fiber wire and the metal wire, and the carbon fiber wire and the metal wire are connected and molded through the connecting method.
Example 1
A method for connecting a carbon fiber wire and a metal wire is provided, aiming at a carbon fiber heating wire externally coated with a multilayer structure and a metal wire externally coated with a multilayer structure, wherein the carbon fiber heating wire is sequentially provided with a pvc anticorrosive layer, a polyethylene insulating layer, a silica gel insulating layer and the carbon fiber wire from outside to inside, and the metal wire is sequentially provided with the pvc anticorrosive layer, the polyethylene insulating layer and a tin-plated copper wire from outside to inside.
The method specifically comprises the following steps:
(1) peeling treatment: peeling the carbon fiber heating wire and the metal wire by peeling equipment, and peeling off a pvc anticorrosive layer, a polyethylene insulating layer and a silica gel insulating layer of the carbon fiber heating wire and the metal wire, wherein the carbon fiber wire is exposed by 15-20 mm, the silica gel insulating layer is exposed by 5-6 mm, and the polyethylene insulating layer is exposed by 5-6 mm; the tin-plated copper wire is exposed by 15-20 mm, and the polyethylene insulation layer is exposed by 5-6 mm.
(2) Degreasing treatment: and (3) using a high-temperature hot air gun, adjusting the air outlet temperature to be 500-550 ℃, baking the exposed part of the carbon fiber wire for 30s, and removing the exposed carbon fiber wire surface resin to obtain the carbon fiber wire.
(3) Roughening treatment: and (3) soaking the carbon fiber filaments in a roughening solution mixed by concentrated nitric acid and concentrated sulfuric acid in equal proportion for 5 minutes to obtain roughened carbon fiber filaments.
(4) Sensitization treatment: and (3) placing the coarsened carbon fiber filaments into a solution formed by mixing tin dichloride and hydrochloric acid according to the equal mass ratio of 1:1 for soaking for 1 minute to obtain the sensitized carbon fiber filaments.
(5) Activation treatment: placing the sensitized carbon fiber filaments in a solution formed by mixing a palladium dichloride solution and a hydrochloric acid solution in a mass ratio of 1:1, and soaking for 3 minutes to obtain activated carbon fiber filaments; wherein the palladium dichloride solution is 0.5 percent of solution by mass fraction, and the hydrochloric acid solution is 1 percent of solution by mass fraction.
(6) Reduction treatment: and (3) placing the activated carbon fiber yarn into a solution formed by mixing 10g/L copper sulfate, 20g/L potassium sodium tartrate, 15g/L disodium ethylene diamine tetraacetate, 10mL/L formaldehyde and 10mg/L potassium ferrocyanide, soaking for 20min, and forming a copper coating on the surface of the carbon fiber yarn to obtain the copper-plated carbon fiber yarn.
(7) Cleaning: and washing the surface of the copper plating layer of the copper-plated carbon fiber wire by using deionized water.
(8) Tin plating treatment: and placing the cleaned copper-plated carbon fiber wire in a tinning solution mixed by stannous chloride, sodium citrate, disodium ethylene diamine tetraacetate, nitrilotriacetic acid and titanium trichloride for tinning at the temperature of 60 ℃ for 10min to obtain the tinned copper carbon fiber wire.
(9) Secondary cleaning: and washing the tin-plated copper carbon fiber wires by using deionized water and drying at the drying temperature of 200 ℃.
(10) First heat treatment: and (3) placing the dried tin-plated copper carbon fiber wire in a vacuum tube furnace for heat preservation treatment, wherein the vacuum degree of the vacuum tube furnace is minus 0.3Mpa, the protective gas is high-purity argon, and the flow rate of the argon is 0.8L per minute. Heating from normal temperature at a heating rate of 10 ℃/min to 270 ℃, and carrying out heat treatment for 5 h.
(11) And (3) second heat treatment: reducing the furnace temperature to normal temperature, raising the temperature at the rate of 8 ℃/min, carrying out heat treatment when the temperature is raised to 800 ℃, and keeping the temperature for 8 h.
(12) Welding treatment: the tin-plated copper carbon fibers and the metal wires are placed in parallel in an overlapping mode, a tin-plated layer on the surfaces of the carbon fibers is melted by using an electric soldering iron, and the metal wires and the carbon fibers after tin plating are welded together.
(13) And (3) crimping treatment: the welded joint is placed on the clamp, the two ends of the clamp are respectively placed on the crosslinked polyethylene insulating layers of the carbon fiber wires and the metal wires, the middle of the clamp is placed on the welded joint, and the compression joint points of the clamp are uniformly pressed down to enable the welded joint and the insulating layers to form an integral structure.
(14) Socket joint processing: cutting a double-wall heat-shrinkable tube with a proper length, sleeving the double-wall heat-shrinkable tube at a carbon fiber wire joint, respectively arranging two ends of the double-wall heat-shrinkable tube on polyethylene insulating layers of the carbon fiber wire and the metal wire, heating the double-wall heat-shrinkable tube from the middle to the two ends by using a hot air gun, and performing heat shrinkage molding on the first layer of double-wall heat-shrinkable tube; cutting a double-wall heat-shrinkable tube which is slightly longer than the first layer, sleeving the double-wall heat-shrinkable tube at a joint of the carbon fiber cold and hot wire, respectively arranging two ends of the double-wall heat-shrinkable tube on a carbon fiber heating wire and a PVC (polyvinyl chloride) anticorrosive layer of the metal wire, scanning the two ends of the double-wall heat-shrinkable tube from the middle by using a hot air gun, and performing heat shrinkage molding on the second layer of double-wall heat-shrinkable tube; the double-wall heat-shrinkable tube with the intercepting length far longer than that of the second layer is sleeved at the joint of the carbon fiber heating line, two ends of the double-wall heat-shrinkable tube are respectively positioned on the PVC anticorrosive layer of the carbon fiber heating line and the metal wire, a hot air gun is used for scanning from the middle to back and forth from the two ends of the double-wall heat-shrinkable tube, and the third layer of the double-wall heat-shrinkable tube is subjected to heat-shrinkable molding.
Example 2
The method specifically comprises the following steps:
(1) peeling treatment: peeling the carbon fiber heating wire and the metal wire by peeling equipment, and peeling off a pvc anticorrosive layer, a polyethylene insulating layer and a silica gel insulating layer of the carbon fiber heating wire and the metal wire, wherein the carbon fiber wire is exposed by 15-20 mm, the silica gel insulating layer is exposed by 5-6 mm, and the polyethylene insulating layer is exposed by 5-6 mm; the tin-plated copper wire is exposed by 15-20 mm, and the polyethylene insulation layer is exposed by 5-6 mm.
(2) Degreasing treatment: and (3) using a high-temperature hot air gun, adjusting the air outlet temperature to be 500-550 ℃, baking the exposed part of the carbon fiber wire for 30s, and removing the exposed carbon fiber wire surface resin to obtain the carbon fiber wire.
(3) Roughening treatment: and (3) soaking the carbon fiber filaments in a roughening solution mixed by concentrated nitric acid and concentrated sulfuric acid in equal proportion for 5 minutes to obtain roughened carbon fiber filaments.
(4) Preparing an electroplating solution: the dosage ratio is 100 g: 20 g: 180 g: 24 g: 0.1 g: 0.27 g: 1L of the plating solution was prepared with the main contents of CuSO4 & 5H2O, C4H4O6KNa & 4H2O, C6H5Na3O7 & 2H2O, KNO3, polyethylene glycol, NaCl and water.
(5) Electroplating treatment: the electroplating solution is contained in the electroplating bath, the electrode is connected to the positive pole of a power supply, one end of the carbon fiber heating wire is connected to the negative pole of the power supply, the electrode is immersed in the electroplating solution, the other end of the carbon fiber wire is partially immersed in the electroplating solution, and electroplating is carried out by electrifying. The current density is kept at 0.80mA/cm2, the voltage is 1.5V, the electroplating temperature is 10 ℃, and the copper-plated carbon fiber wire is obtained after electroplating for 60 min.
(6) Cleaning: and washing the surface of the copper plating layer of the copper-plated carbon fiber wire by using deionized water.
(7) Tin plating treatment: and placing the cleaned copper-plated carbon fiber wire in a tinning solution mixed by stannous chloride, sodium citrate, disodium ethylene diamine tetraacetate, nitrilotriacetic acid and titanium trichloride for tinning at the temperature of 60 ℃ for 10min to obtain the tinned copper carbon fiber wire.
(8) Secondary cleaning: and washing the tin-plated copper carbon fiber wires by using deionized water and drying at the drying temperature of 200 ℃.
(9) First heat treatment: and (3) placing the dried tin-plated copper carbon fiber wire in a vacuum tube furnace for heat preservation treatment, wherein the vacuum degree of the vacuum tube furnace is minus 0.3Mpa, the protective gas is high-purity argon, and the flow rate of the argon is 0.8L per minute. Heating from normal temperature at a heating rate of 10 ℃/min to 270 ℃, and carrying out heat treatment for 5 h.
(10) And (3) second heat treatment: reducing the furnace temperature to normal temperature, raising the temperature at the rate of 8 ℃/min, carrying out heat treatment when the temperature is raised to 800 ℃, and keeping the temperature for 8 h.
(11) Welding treatment: the tin-plated copper carbon fibers and the metal wires are placed in parallel in an overlapping mode, a tin-plated layer on the surfaces of the carbon fibers is melted by using an electric soldering iron, and the metal wires and the carbon fibers after tin plating are welded together.
(12) And (3) crimping treatment: the welded joint is placed on the clamp, the two ends of the clamp are respectively placed on the crosslinked polyethylene insulating layers of the carbon fiber wires and the metal wires, the middle of the clamp is placed on the welded joint, and the compression joint points of the clamp are uniformly pressed down to enable the welded joint and the insulating layers to form an integral structure.
(13) Socket joint processing: cutting a double-wall heat-shrinkable tube with a proper length, sleeving the double-wall heat-shrinkable tube at a carbon fiber wire joint, respectively arranging two ends of the double-wall heat-shrinkable tube on polyethylene insulating layers of the carbon fiber wire and the metal wire, heating the double-wall heat-shrinkable tube from the middle to the two ends by using a hot air gun, and performing heat shrinkage molding on the first layer of double-wall heat-shrinkable tube; cutting a double-wall heat-shrinkable tube which is slightly longer than the first layer, sleeving the double-wall heat-shrinkable tube at a joint of the carbon fiber cold and hot wire, respectively arranging two ends of the double-wall heat-shrinkable tube on a carbon fiber heating wire and a PVC (polyvinyl chloride) anticorrosive layer of the metal wire, scanning the two ends of the double-wall heat-shrinkable tube from the middle by using a hot air gun, and performing heat shrinkage molding on the second layer of double-wall heat-shrinkable tube; the double-wall heat-shrinkable tube with the intercepting length far longer than that of the second layer is sleeved at the joint of the carbon fiber heating line, two ends of the double-wall heat-shrinkable tube are respectively positioned on the PVC anticorrosive layer of the carbon fiber heating line and the metal wire, a hot air gun is used for scanning from the middle to back and forth from the two ends of the double-wall heat-shrinkable tube, and the third layer of the double-wall heat-shrinkable tube is subjected to heat-shrinkable molding.
Example 3
A method for realizing connection of carbon fiber wires and metal wires specifically comprises the following steps:
(1) peeling treatment: peeling the carbon fiber heating wire and the metal wire by peeling equipment, and peeling a pvc anticorrosive layer, a polyethylene insulating layer and a silica gel insulating layer of the carbon fiber heating wire and the metal wire, wherein the carbon fiber heating wire is exposed by 17mm, the silica gel insulating layer is exposed by 6mm, and the polyethylene insulating layer is exposed by 6 mm; the tin-plated copper wire was exposed 17mm and the polyethylene insulation layer was exposed 6 mm.
(2) Degreasing treatment: and (3) using a high-temperature hot air gun, adjusting the air outlet temperature to 570 ℃, baking the exposed part of the carbon fiber yarn for 28s, and removing the exposed resin on the surface of the carbon fiber yarn to obtain the carbon fiber yarn.
(3) Roughening treatment: and (3) soaking the carbon fiber filaments in a roughening solution mixed by concentrated nitric acid and concentrated sulfuric acid in equal proportion for 7min to obtain roughened carbon fiber filaments.
(4) Sensitization treatment: and (3) placing the coarsened carbon fiber filaments into a solution formed by mixing tin dichloride and hydrochloric acid according to the equal mass ratio of 1:1 for soaking for 2 minutes to obtain the sensitized carbon fiber filaments.
(5) Activation treatment: placing the sensitized carbon fiber filaments in a solution formed by mixing a palladium dichloride solution and a hydrochloric acid solution in a mass ratio of 1:1, and soaking for 4 minutes to obtain activated carbon fiber filaments; wherein the palladium dichloride solution is 0.5 percent of solution by mass fraction, and the hydrochloric acid solution is 1 percent of solution by mass fraction.
(6) Reduction treatment: and (3) placing the activated carbon fiber yarn into a solution formed by mixing 15g/L copper sulfate, 24g/L potassium sodium tartrate, 20g/L disodium ethylene diamine tetraacetate, 13mL/L formaldehyde and 15mg/L potassium ferrocyanide, soaking for 20min, and forming a copper coating on the surface of the carbon fiber yarn to obtain the copper-plated carbon fiber yarn.
(7) Cleaning: and washing the surface of the copper plating layer of the copper-plated carbon fiber wire by using deionized water.
(8) Tin plating treatment: and placing the cleaned copper-plated carbon fiber wire in a tinning solution mixed by stannous chloride, sodium citrate, disodium ethylene diamine tetraacetate, nitrilotriacetic acid and titanium trichloride for tinning at the temperature of 70 ℃ for 15min to obtain the tinned copper carbon fiber wire.
(9) Secondary cleaning: and washing the tin-plated copper carbon fiber wires by using deionized water and drying at 240 ℃.
(10) First heat treatment: and (3) placing the dried tin-plated copper carbon fiber wire in a vacuum tube furnace for heat preservation treatment, wherein the vacuum degree of the vacuum tube furnace is minus 0.3Mpa, the protective gas is high-purity argon, and the flow rate of the argon is 0.8L per minute. Heating from normal temperature at a heating rate of 10 ℃/min to 270 ℃, and carrying out heat treatment for 5 h.
(11) And (3) second heat treatment: reducing the furnace temperature to normal temperature, raising the temperature at the rate of 8 ℃/min, carrying out heat treatment when the temperature is raised to 800 ℃, and keeping the temperature for 8 h.
(12) Welding treatment: the tin-plated copper carbon fibers and the metal wires are placed in parallel in an overlapping mode, a tin-plated layer on the surfaces of the carbon fibers is melted by using an electric soldering iron, and the metal wires and the carbon fibers after tin plating are welded together.
(13) And (3) crimping treatment: the welded joint is placed on the clamp, the two ends of the clamp are respectively placed on the crosslinked polyethylene insulating layers of the carbon fiber wires and the metal wires, the middle of the clamp is placed on the welded joint, and the compression joint points of the clamp are uniformly pressed down to enable the welded joint and the insulating layers to form an integral structure.
(14) Socket joint processing: cutting a double-wall heat-shrinkable tube with a proper length, sleeving the double-wall heat-shrinkable tube at a carbon fiber wire joint, respectively arranging two ends of the double-wall heat-shrinkable tube on polyethylene insulating layers of the carbon fiber wire and the metal wire, heating the double-wall heat-shrinkable tube from the middle to the two ends by using a hot air gun, and performing heat shrinkage molding on the first layer of double-wall heat-shrinkable tube; cutting a double-wall heat-shrinkable tube which is slightly longer than the first layer, sleeving the double-wall heat-shrinkable tube at a joint of the carbon fiber cold and hot wire, respectively arranging two ends of the double-wall heat-shrinkable tube on a carbon fiber heating wire and a PVC (polyvinyl chloride) anticorrosive layer of the metal wire, scanning the two ends of the double-wall heat-shrinkable tube from the middle by using a hot air gun, and performing heat shrinkage molding on the second layer of double-wall heat-shrinkable tube; the double-wall heat-shrinkable tube with the intercepting length far longer than that of the second layer is sleeved at the joint of the carbon fiber heating line, two ends of the double-wall heat-shrinkable tube are respectively positioned on the PVC anticorrosive layer of the carbon fiber heating line and the metal wire, a hot air gun is used for scanning from the middle to back and forth from the two ends of the double-wall heat-shrinkable tube, and the third layer of the double-wall heat-shrinkable tube is subjected to heat-shrinkable molding.
Example 4
(1) Peeling treatment: peeling the carbon fiber heating wire and the metal wire by peeling equipment, and peeling off a pvc anticorrosive layer, a polyethylene insulating layer and a silica gel insulating layer of the carbon fiber heating wire and the metal wire, wherein the carbon fiber heating wire is exposed by 20mm, the silica gel insulating layer is exposed by 6mm, and the polyethylene insulating layer is exposed by 6 mm; the tin-plated copper wire is exposed by 20mm, and the polyethylene insulation layer is exposed by 6 mm.
(2) Degreasing treatment: and (3) using a high-temperature hot air gun, adjusting the air outlet temperature to be 550 ℃, baking the exposed part of the carbon fiber yarn for 25s, and removing the resin on the surface of the exposed carbon fiber yarn to obtain the carbon fiber yarn.
(3) Roughening treatment: and (3) soaking the carbon fiber filaments in a roughening solution mixed by concentrated nitric acid and concentrated sulfuric acid in equal proportion for 7 minutes to obtain roughened carbon fiber filaments.
(4) Preparing an electroplating solution: the dosage ratio is 100 g: 20 g: 180 g: 24 g: 0.1 g: 0.27 g: 1L of the plating solution was prepared with the main contents of CuSO4 & 5H2O, C4H4O6KNa & 4H2O, C6H5Na3O7 & 2H2O, KNO3, polyethylene glycol, NaCl and water.
(5) Electroplating treatment: the electroplating solution is contained in the electroplating bath, the electrode is connected to the positive pole of a power supply, one end of the carbon fiber heating wire is connected to the negative pole of the power supply, the electrode is immersed in the electroplating solution, the other end of the carbon fiber wire is partially immersed in the electroplating solution, and electroplating is carried out by electrifying. The current density is kept at 0.80mA/cm2, the voltage is 1.5V, the electroplating temperature is 10 ℃, and the copper-plated carbon fiber wire is obtained after electroplating for 60 min.
(6) Cleaning: and washing the surface of the copper plating layer of the copper-plated carbon fiber wire by using deionized water.
(7) Tin plating treatment: and placing the cleaned copper-plated carbon fiber wire in a tinning solution mixed by stannous chloride, sodium citrate, disodium ethylene diamine tetraacetate, nitrilotriacetic acid and titanium trichloride for tinning at the temperature of 60 ℃ for 10min to obtain the tinned copper carbon fiber wire.
(8) Secondary cleaning: and washing the tin-plated copper carbon fiber wires by using deionized water and drying at the drying temperature of 200 ℃.
(9) First heat treatment: and (3) placing the dried tin-plated copper carbon fiber wire in a vacuum tube furnace for heat preservation treatment, wherein the vacuum degree of the vacuum tube furnace is minus 0.3Mpa, the protective gas is high-purity argon, and the flow rate of the argon is 0.8L per minute. Heating from normal temperature at a heating rate of 10 ℃/min to 270 ℃, and carrying out heat treatment for 5 h.
(10) And (3) second heat treatment: reducing the furnace temperature to normal temperature, raising the temperature at the rate of 8 ℃/min, carrying out heat treatment when the temperature is raised to 800 ℃, and keeping the temperature for 8 h.
(11) Welding treatment: the tin-plated copper carbon fibers and the metal wires are placed in parallel in an overlapping mode, a tin-plated layer on the surfaces of the carbon fibers is melted by using an electric soldering iron, and the metal wires and the carbon fibers after tin plating are welded together.
(12) And (3) crimping treatment: the welded joint is placed on the clamp, the two ends of the clamp are respectively placed on the crosslinked polyethylene insulating layers of the carbon fiber wires and the metal wires, the middle of the clamp is placed on the welded joint, and the compression joint points of the clamp are uniformly pressed down to enable the welded joint and the insulating layers to form an integral structure.
(13) Socket joint processing: cutting a double-wall heat-shrinkable tube with a proper length, sleeving the double-wall heat-shrinkable tube at a carbon fiber wire joint, respectively arranging two ends of the double-wall heat-shrinkable tube on polyethylene insulating layers of the carbon fiber wire and the metal wire, heating the double-wall heat-shrinkable tube from the middle to the two ends by using a hot air gun, and performing heat shrinkage molding on the first layer of double-wall heat-shrinkable tube; cutting a double-wall heat-shrinkable tube which is slightly longer than the first layer, sleeving the double-wall heat-shrinkable tube at a joint of the carbon fiber cold and hot wire, respectively arranging two ends of the double-wall heat-shrinkable tube on a carbon fiber heating wire and a PVC (polyvinyl chloride) anticorrosive layer of the metal wire, scanning the two ends of the double-wall heat-shrinkable tube from the middle by using a hot air gun, and performing heat shrinkage molding on the second layer of double-wall heat-shrinkable tube; the double-wall heat-shrinkable tube with the intercepting length far longer than that of the second layer is sleeved at the joint of the carbon fiber heating line, two ends of the double-wall heat-shrinkable tube are respectively positioned on the PVC anticorrosive layer of the carbon fiber heating line and the metal wire, a hot air gun is used for scanning from the middle to back and forth from the two ends of the double-wall heat-shrinkable tube, and the third layer of the double-wall heat-shrinkable tube is subjected to heat-shrinkable molding.
According to the method for connecting the carbon fiber wire and the metal wire, provided by the embodiment of the invention, the copper-tin double-plating layer is plated on the surface of the carbon fiber wire, the composite plating layer is formed through the heat treatment process, so that the wettability of the carbon fiber and the matrix can be improved, the wettability of the short carbon fiber in molten metal is improved, the interface reaction of the short carbon fiber and the matrix is prevented, the integrity of the short carbon fiber is ensured, meanwhile, the composite plating layer formed on the surface of the short carbon fiber is beneficial to being dispersed in the matrix, more load is borne, and the reinforcing effect of the short carbon fiber is fully exerted.
And the composite plating layer is prepared by means of a heat treatment process, so that an anti-oxidation composite coating is formed on the outer layer of the copper plating layer, the anti-oxidation capability of the copper plating layer is improved, the stability of the plating layer is enhanced, the stability of the welding quality in the subsequent welding process is directly enhanced, and the conductive capability of the final connection molding is increased.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While embodiments of the present invention have been described, the present invention is not limited to the above-described embodiments, which are intended to be illustrative rather than limiting, and many modifications may be made by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A method for connecting a carbon fiber wire and a metal wire is characterized in that the carbon fiber wire is obtained through pretreatment; forming a metal layer on the surface of the carbon fiber wire; welding the carbon fiber wire with the metal layer formed on the surface with a metal wire; and reinforcing the welded carbon fiber wires and metal wires to realize the connection and fixation of the carbon fiber wires and the metal wires.
2. The method for connecting a carbon fiber wire and a metal wire according to claim 1, wherein the pretreatment comprises a peeling treatment of the carbon fiber heating wire to obtain the carbon fiber wire.
3. The method for connecting the carbon fiber wire and the metal wire according to claim 2, wherein the pretreatment further comprises a degreasing treatment, wherein the carbon fiber heating wire is degreased at a high temperature to obtain the carbon fiber wire.
4. The method for connecting a carbon fiber yarn and a metal yarn according to claim 1, wherein the metal layer forming method comprises sequentially roughening the carbon fiber yarn and plating the roughened surface of the carbon fiber yarn to form a dense metal layer; and the coarsening comprises the step of soaking the carbon fiber heating wire in coarsening liquid for 5-10 minutes.
5. The method for connecting a carbon fiber yarn and a metal yarn according to claim 4, wherein the plating treatment comprises a first plating treatment and a second plating treatment, and the first plating treatment comprises sensitization, activation and reduction treatments of the roughened carbon fiber yarn in sequence; the sensitization comprises the step of soaking the coarsened carbon fiber filaments in a sensitization liquid for 1-3 minutes; the activation comprises the steps of soaking the sensitized carbon fiber joint in a metal solution containing catalytic activity for 3-5 minutes; and the reduction comprises the step of soaking the activated carbon fiber joint in a reduction solution for 1-2 minutes to form a first metal coating.
6. The method for connecting a carbon fiber yarn and a metal wire according to claim 4, wherein the plating treatment comprises a first plating treatment and a second plating treatment, and the first plating treatment comprises subjecting the carbon fiber yarn after roughening to an electroplating treatment; the electroplating treatment is specifically to connect one end of the carbon fiber heating wire to the negative electrode of a power supply. And immersing the electrode into electroplating solution, immersing the other end of the carbon fiber heating wire into the electroplating solution, and electroplating to form a first metal coating.
7. The method of connecting a carbon fiber yarn and a metal wire according to any one of claims 5 and 6, wherein the second plating treatment comprises brushing tin on the first metal plating layer to form a tin metal film, i.e., a second metal plating layer, on the surface of the first metal plating layer.
8. The method of claim 7, wherein the welding comprises heating the carbon fiber filaments and the metal filaments to which the first and second metal plating layers are attached to form a weld joint.
9. The method of connecting a carbon fiber yarn to a metal wire according to claim 8, wherein the reinforcement treatment includes crimping and caulking; the compression joint comprises the step of fixing a welding head through a hoop to form a fixing head; the sleeve joint comprises a plurality of layers of polymer sleeves which are arranged outside the fixed head in a fitting mode.
10. A carbon fiber wire and metal wire connecting joint is characterized by comprising a carbon fiber wire and a metal wire which are connected with each other, wherein the carbon fiber wire and the metal wire are manufactured and molded by the method of any one of claims 1 to 9.
CN202111237964.4A 2021-10-25 2021-10-25 Carbon fiber wire and metal wire connecting joint and connecting method thereof Pending CN113909605A (en)

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