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CN107142466B - A kind of method that small-power continuous discharge prepares multi-functional nano protecting coating - Google Patents

A kind of method that small-power continuous discharge prepares multi-functional nano protecting coating Download PDF

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Publication number
CN107142466B
CN107142466B CN201710361310.XA CN201710361310A CN107142466B CN 107142466 B CN107142466 B CN 107142466B CN 201710361310 A CN201710361310 A CN 201710361310A CN 107142466 B CN107142466 B CN 107142466B
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reaction chamber
coating
discharge
base material
passed
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CN107142466A (en
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宗坚
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Jiangsu Favored Nanotechnology Co Ltd
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Jiangsu Favored Nanotechnology Co Ltd
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Priority to PCT/CN2017/113188 priority patent/WO2018214446A1/en
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Priority to US16/688,845 priority patent/US11742186B2/en
Priority to US16/688,589 priority patent/US11270871B2/en
Priority to US17/653,401 priority patent/US11587772B2/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00Manufacture or treatment of nanostructures
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C16/00Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/02Pretreatment of the material to be coated
    • C23C16/0227Pretreatment of the material to be coated by cleaning or etching
    • C23C16/0245Pretreatment of the material to be coated by cleaning or etching by etching with a plasma
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C16/00Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/44Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
    • C23C16/50Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Organic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physical Vapour Deposition (AREA)

Abstract

A kind of method that small-power continuous discharge prepares multi-functional nano protecting coating, belong to technical field of plasma, in this method, the indoor vacuum of reaction chamber is extracted into 10~200 millitorrs, and it is passed through inert gas He or Ar, opening movement mechanism, base material is set to produce movement in reaction chamber, monomer vapours are passed through in reaction chamber, plasma discharge, carry out chemical vapor deposition, deposition process includes pretreatment stage and plating mem stage, pretreatment stage plasma discharge manner discharges for high power CW, plated film phase plasma discharge mode is small-power continuous discharge.In coating preparation process, kinetic characteristic and plasma discharge energy the combination linkage of base material.While preparation process plasma discharge, base material produces movement, improves coating deposition efficiency, and improve the uniformity and compactness of coating layer thickness.Prepared coating has the characteristic such as waterproof and dampproof, mould proof, acid and alkali resistance solvent, acid and alkali resistance salt fog.

Description

A kind of method that small-power continuous discharge prepares multi-functional nano protecting coating
Technical field
The invention belongs to plasma chemical vapor deposition technique field, and in particular to prepare multi-functional nanometer to one kind The method of protective coating.
Background technology
Corrosive environment is the most common factor that electronic device is destroyed.Cause because of environmental corrosion solid in electronic device The phenomena of the failure such as the reduction of burn into conductor/semiconductor insulating properties and short circuit, open circuit or the loose contact of body material.At present, exist In the product of the hi-tech industries such as national defence, space flight, the ratio that electronic unit occupies is increasing, moisture-proof to electronic product, mould proof, Corrosion resistance requires more and more stringenter.And in communication field, as technology is constantly progressive, the continuous lifting of communication frequency, to logical Heat dissipation, the reliability requirement of signal transmission for interrogating equipment are also higher and higher.Can be to circuit therefore, it is necessary to reliable method Plate and electronic component are effectively protected, and do not interfere with proper heat reduction and signal transmission.
Polymer coating due to economic, easy application, it is applied widely the features such as be usually used in the protection of material surface, Ke Yifu Give the good physics of material, chemical durability.Barrier based on polymer coating, it is in electronic apparatus, circuit board surface shape Into protective film can be effectively isolated wiring board, and can protect circuit exempted under corrosive environment erosion, destroy, so as to improve electricity The reliability of sub- device, increases its safety coefficient, and ensures its service life, is used as erosion shield.
Conformal coating (Conformal coating) is that certain material is coated on PCB, is formed and the external shape of coated article The technical process for the insulating protective layer being consistent, is a kind of common circuit board waterproof method, can be effectively isolated wiring board, And circuit can be protected to exempt from the erosion of adverse circumstances, destroy.In current conformal coat preparation process there is also some problems and Drawback:Solvent easily causes to damage to circuit board components in liquid phase method;Heat-curable coating high temperature be easy to cause device failure;Light is consolidated Change coating and be difficult to closed device inside.A kind of new conformal coat of U.S. Union Carbide Co. development and application Material, parylene coating are a kind of polymer of paraxylene, and there is low water, gas permeability, high screen effect can reach Moisture-proof, waterproof, antirust, the effect of antiacid caustic corrosion.Research finds that Parylene is that deposition produces under vacuum conditions, can be with Apply the protection in the field that liquid coating can not be related to such as high-frequency circuit, pole light current streaming system.Polymer thin membrane coat is thick Degree is printed circuit board assembly thin polymer film the main reason for influencing Parylene vapour deposition conformal coat protection failure In 3~7 micron thickness local corrosion failure easily occurs for coating, and coating layer thickness answers >=30 in the case of high-frequency dielectric loss is not influenced Micron.The pre-processing requirements for the printed wiring board that parylene coating is protected for needs are higher, such as conductive component, signal transmission Component, radio frequency component etc., need to do circuit board module masking pretreatment when being vapor-deposited conformal coat, avoid to component It can impact.This drawback brings very big limitation to the application of parylene coating.Parylene coating preparing raw material is of high cost, Coating preparation condition harsh (high temperature, condition of high vacuum degree requirement), rate of film build are low, it is difficult to extensive use.In addition, thick coating is easily led to The problems such as weak heat-dissipating, signal barrier, holiday increase.
Plasma activated chemical vapour deposition (plasma chemical vapor deposition, PCVD) is a kind of use etc. Gas ions activated reactive gas, promotes to be chemically reacted in matrix surface or near surface space, generates the technology of solid film.Deng Gas ions chemical vapour deposition technique coating has the following advantages
(1) it is dry process, generation film is uniformly pin-free.
(2) chemistry such as the solvent resistance of plasma polymerization film, chemical resistance, heat resistance, abrasion resistance properties, physics Property is stablized.
(3) plasma polymerization film and matrix gluing are good.
(4) it may be made as homogeneous film in the substrate surface of concavo-convex irregular.
(5) coating preparation temperature is low, can be carried out under normal temperature condition, effectively avoid the damage of temperature sensitive device.
(6) plasma process can not only prepare thickness as micron-sized coating but also can prepare ultra-thin nanoscale Coating.
P2i companies of Britain are developed a kind of based on specific small duty cycle pulse electric discharge using chemical vapour deposition technique Polymer nanocomposite coating prepared by method, should be can not achieve based on the preparation process of the method for specific small duty cycle pulse electric discharge It is prepared to not isoplastic bond distance, bond energy, the molecular weight of material and effective cooperation of offer energy and control in chemical raw material The scratch resistance and persistence effect of coating are undesirable.Also just because of coating performance limit, at present coating only electronics, A kind of nano coating of lyophobicity is formed on electrical equipment, and corrosion resistance caused by environment cannot be solved effectively Certainly.And had the shortcomings that based on fine and close protective coating prepared by the method that specific small duty cycle pulse is discharged fatal:From micro- For seeing angle, less power density is unfavorable for the shaping of compact texture in coating process, or even can not form stable film Structure;For macroscopically, the big speed that less power density is unfavorable for coating increases, and efficiency is relatively low in actual production, Limit its application.
Base material is all fixed in existing plasma chemical vapor deposition coating preparation process, the movement shape of base material The discharge energy of state and plasma does not have relevance;With base material static in the method processing chamber housing of continuous discharge, in monomer Generally by simply stacking with reference to film forming under the action of continuous discharge, obtained coating general structure is dredged for the chain rupture of activation Pine, or even powdered degree are high, are unfavorable for the formation of the microcosmic compact texture of coating, therefore, the waterproof of coating, it is moisture-proof, corrosion-resistant, The barrier propterties such as solvent resistant are poor.
Due to plasma density in reaction chamber and chemical raw material density, there are different zones difference, base material transfixion Some regions coating deposition rate can be caused slow, low production efficiency, but also there are what uniformity and compactness differed greatly to show As.
The content of the invention
The present invention provides a kind of small-power continuous discharge preparation multi-functional nano protecting painting to solve above-mentioned technical problem The method of layer.In the preparation process, technique mainly includes pre-processing and plating mem stage, pretreatment stage plasma discharge manner Discharge for high power CW, plated film phase plasma discharge mode is small-power continuous discharge.And by the kinetic characteristic of base material Combine and link with plasma discharge energy, while plasma discharge energy exports, base material keeps motion state.Pass through Gas ions energy introduces the other monomers component with polyfunctional group cross-linked structure and introduces extra crosslinking points to form crosslinking Structure.Plasma discharge produces plasma, real by controlling the relation between plasma discharge energy and monomer bond energy The effective activation of the existing low temperature plasma active group higher to energy in monomer component obtains avtive spot, meanwhile, drawn The additional active point entered is cross-linked with each other polymerization under plasma ambient, forms fine and close net structure.
The technical solution adopted in the present invention is as follows:
A kind of method that small-power continuous discharge prepares multi-functional nano protecting coating, it is characterised in that:Including following Step:
(1) base material is placed in the reaction chamber of nano coating Preparation equipment, reaction chamber is continuously vacuumized, will be reacted The indoor vacuum of chamber is extracted into 10~200 millitorrs, and is passed through inert gas He or Ar, and opening movement mechanism, makes base material anti- Answer and movement is produced in chamber;
(2) monomer vapours are passed through in reaction chamber, is 30~300 millitorrs to vacuum, opens plasma discharge, into Row chemical vapor deposition, deposition process include pretreatment stage and plating mem stage, and pretreatment stage plasma discharge power is 120~400W, 60~900s of continuous discharging time, subsequently into plating mem stage, adjustment plasma discharge power for 10~ 75W, continuous discharging time 600s~7200s, multi-functional nano coating is prepared in substrate surface chemical vapor deposition;
The purpose of pretreatment stage is activated substrate surface, and numerous avtive spots are formed in substrate surface.The bombardment is pre- Processing can clear up the impurity of substrate surface, while, beneficial to the deposition of coating, can improve coating and base with the surface of activated substrate The combination power of material.
The monomer vapours component is:
At least one single functionality unsaturation fluorocarbon resin and at least one polyfunctionality unsaturated hydrocarbons analog derivative it is mixed Compound, the mass fraction in the monomer vapours shared by polyfunctionality unsaturated hydrocarbons analog derivative are 15~65%;
(3) stop being passed through monomer vapours, while stop plasma discharge, persistently vacuumize, keep reaction chamber vacuum Spend to be passed through air after 10~200 1~5min of millitorr to an atmospheric pressure, stop the movement of base material, then take out base material.
In the continuous discharge that pretreatment stage plasma discharge form is high-power 120~400W, plating mem stage etc. from Daughter discharge type is the continuous discharge of 10~75W of small-power.What the process of continuous plasma discharge depositing produced etc. Gas ions have deposition film certain etching;Be conducive to accelerate in plating mem stage small-power continuous discharge combination substrate transport characteristic The speed of chemical deposition, relatively existing small duty cycle pulse discharge technology, the continuous discharge mode thickness within the regular hour Thicker and finer and close, plated film is more efficient, thus solve the P2i companies of Britain mentioned in background technology based on specific small The fatal defects of fine and close protective coating prepared by the method for duty cycle pulse electric discharge.
It is more active by effective output to energy, control molecular structure under low vacuum plasma discharge environment Chemical bond in monomer is broken, and is formed the product surfaces such as the higher free radical of activity, the free radical and mobile phone of excitation state and is lived Change group triggers polymerization to form nano water-proof film by way of chemical bonds, and multi-functional nanometer is formed in substrate surface Coating.
Base material produces movement in reaction chamber in the step (1), and substrate transport form is base material relative response chamber Straight reciprocating motion or curvilinear motion are carried out, the curvilinear motion includes circular motion, ellipse circular motion, planetary motion, sphere Movement or the curvilinear motion of other irregular routes.
Base material is solid material in the step (1), and the solid material is electronic product, electric component, Electronic Assemblies Semi-finished product, pcb board, metallic plate, polytetrafluoroethylene (PTFE) plate or electronic component, and the substrate surface prepare multifunctionality and receive Its any interface can be exposed to water environment, mould environment, acid, basic solvent environment, acid, alkaline salt mist environment, acid after rice coating Property atmospheric environment, organic solvent immersion environment, cosmetics environment, sweat environment, cold cycling shock environment or damp and hot alternation ring Used in border.
The volume of reaction chamber is 50~1000L in the step (1), the temperature control of reaction chamber at 30~60 DEG C, It is 5~300sccm that the inert gas, which is passed through flow,.
The reaction chamber is rotator shaped chamber or cube shaped chamber.
Monomer vapours are passed through to be atomized, being volatilized by charge pump by monomer and introduced by 10~200 millitorr of low pressure anti- Chamber is answered, the flow for being passed through monomer is 10~1000 μ L/min;
The single functionality unsaturation fluorocarbon resin includes:
3- (perfluor -5- methylhexyls) -2- hydroxy propyl methacrylates, 2- (perfluoro decyl) ethyl methacrylate Ester, 2- (perfluoro hexyl) ethylmethyl acrylate, 2- (perfluorododecyl) ethyl propylenes acid esters, 2- perfluoro capryl acrylic acid Ethyl ester, 1H, 1H, 2H, 2H- perfluorooctanols acrylate, 2- (perfluoro butyl) ethyl propylenes acid esters, (2H- perfluoro propyls) -2- third Olefin(e) acid ester, (perfluorocyclohexyl) methacrylate, the fluoro- 1- propine of 3,3,3- tri-, 1- acetenyl -3,5- difluorobenzenes or 4- acetylene Base benzotrifluoride;
The polyfunctionality unsaturated hydrocarbons analog derivative includes:
Ethoxylated trimethylolpropane triacrylate, tri (propylene glycol) diacrylate, two propylene of polyethylene glycol Acid esters, 1,6 hexanediol diacrylate, ethylene glycol diacrylate, diethylene glycol divinyl ether or diacrylate new penta 2 Alcohol ester.
In the step (2), the plasma discharge manner is radio frequency discharge, microwave discharge, intermediate frequency discharges, high frequency is put The waveform of electricity, spark discharge, the high-frequency discharge and intermediate frequency electric discharge is sinusoidal or bipolar pulse, and radio frequency plasma is to utilize The plasma that electromagnetic field of high frequency is discharged and produced.Microwave method is the energy excitation plasma using microwave, has energy profit With it is efficient the advantages of, simultaneously because electrodeless discharge, plasma is pure, be current high quality, high-speed, large area prepare Excellent process.
In coating preparation process, kinetic characteristic and plasma discharge energy the combination linkage of base material.Preparation process is medium While plasma discharge, base material produces movement, improves coating deposition efficiency, and improve uniformity and the cause of coating layer thickness Close property.
Prepared coating has waterproof and dampproof, mould proof, an acid and alkali resistance solvent, acid and alkali resistance salt fog, and acid resistance is big Gas, organic solvent-resistant immersion, resistance to cosmetics, resistance to sweat, cold-resistant thermal cycle impact (- 40 DEG C~+75 DEG C), wet-heat resisting alternation is (wet Degree 75%~95%) etc. characteristic.While possessing above-mentioned barrier propterty, coating layer thickness exists frequency in the case of 1~1000nm The influence of radio frequency communication signal in the range of 10M~8G is less than 5%.
The above-mentioned technical proposal of the present invention has the following advantages compared with prior art:
1st, continuous small-power electric discharge is introduced in plating mem stage, can polymerize and carve at the same time during continuous discharge Lose two processes, when the excited state molecule end of the chain that interrupts of plasma by way of chemical bond with substrate surface avtive spot With reference to, second, plasma can etch the strand of the low chemical bond energy of polymerization rear surface at the same time, while play the role of activation, two The alternating action of person make it that the nano coating of polymerization is finer and close.
2nd, pre-process and plate mem stage, base material moves in reaction chamber, makes the base material coating film thickness of diverse location Tend to consistent, solve since different zones monomer density difference causes substrate surface coating layer thickness non-uniform in reaction chamber Problem.
3rd, in preparation process, kinetic characteristic and plasma discharge energy the combination linkage of base material, discharge energy output Meanwhile base material is moved, improve deposition efficiency, so as to get multi-functional nano protecting coating compactness significantly improve. Simultaneously because the raising of deposition efficiency, the dosage of the chemical monomer raw material of monomer vapours also only has other dosages in the prior art 10%~15%, it is more environmentally protective so as to reduce the discharge of tail gas exhaust, there is weight in actual production efficiency is improved Big meaning.
4th, the introducing of polyfunctional group cross-linked structure promotes coating densification net structure in microstructure in monomer material Formation, ensureing hydrophobic while improving antiacid/caustic corrosion performance of the coating to environment.
General plasma polymerization selects monofunctional monomer, obtains having certain cross-linked structure coating.Cross-linked structure is Numerous active sites that chain rupture formation occurs in plasma discharge due to monomer form crosslinking by way of interactive connection Structure.But this cross-linked structure is more loose, containing more linear components, solvent resistant infiltration and dissolubility are poor.The present invention Extra crosslinking points are introduced to form cross-linked structure by introducing the other monomers component with polyfunctional group cross-linked structure.Deng During plasma discharge, under low temperature plasma effect, by the effective control and output to energy, by energy in monomer component Higher active group interrupts to form active site, and the additional active point being introduced into is cross-linked with each other polymerization under plasma ambient, shape Into fine and close net structure.
For the coating structure more compared to loose linear components, net structure has more preferably compactness, Neng Gouyou Effect improves the performance of the anticorrosive environment of film.Under plasma ambient, surface is activated obtaining numerous work plated film basis material Property site, the living radical of these avtive spots and the monomer material through plasma exciatiaon are mutually tied with stronger chemical bond Close, form and the elementary reaction of wide variety occurs so that the nano thin-film of basis material has excellent combination power and machinery Intensity.By controlling different monomers fit system, while regulate and control different process conditions, to realize to the anticorrosive of material surface The Effective Regulation of environment, obtains the structure for having the bottom dense skin roughness of special microstructure big, its environmental corrosion resisting Comprehensive performance improve 20%~35%.
5th, by the other monomers of introducing crosslinked structure, monomer ratio is controlled, according to the molecular bond energy of different monomers, bond distance Difference, the difference of vapourizing temperature, give the Significant Change of the output of equipment corresponding energy and technological parameter, obtain compound, gradually The polymer nanocomposite coating of structure changes, not only ensure that the hydrophobicity of film, but also improve the resistance to environment corruption of the products such as electronic product The performance of erosion.
Electronic equipment in daily life is easily damaged by the erosion of corrosive environment, is substantially at during use In corrosive environment, if things go on like this, the irremediable infringement of electronic equipment can be caused.The film plating process of patent of the present invention greatly increases Nanometer is of great significance in actual production efficiency is improved.Coating improves production in the service life of corrosive environment The protecting effect of product.It is mainly used in following product:
(1), portable equipment keyboard:Portable keyboard has the characteristics that small and light, is usually used in the equipment such as computer, mobile phone. It can handle official business easy to user in route.But when it runs into the pollution of common liquid, the unexpected of the teacup that is such as filled with water overturns, rain Water, sweat are impregnated with, and keyboard is easily short-circuit, and then are damaged.After carrying out plated film to it using such nano coating, when can Ensure surface of keyboard easy to clean, function is intact after meeting water so that keyboard can adapt to more acute environment.
(2), LED display:LED display has the purposes such as demonstration, StoreFront decoration, illumination, warning.Its partial use The adverse circumstances in face of rainwater or more dust are needed, during such as rainy day, the outdoor LED advertisement screen curtain in market, road surface warning lamp is raw The LED display control panel in workshop is produced, these adverse circumstances cause LED screen failure, and easy dust stratification, not easy cleaning, After the nano coating, the above problem can effectively solve the problem that.
(3), intelligent fingerprint lock:Fingerprint Lock is intelligent lock, it has gathered computer information technology, electronic technology, machinery Technology and modern five gold process, are widely used in police criminal detection and judicial domain.But after it meets water, its inner wire Louis is short Road, it is difficult to repair, it is necessary to lock is torn in violence open, after the coating, this problem can be avoided.
(4), hearing aid, bluetooth headset:Hearing aid does not have connection, after the coating, Yong Huke with bluetooth headset To be used within a certain period of time under water environment, such as have a bath, on rainy day, equipment will not be infiltrated because of rainwater to be damaged.
(5), operative sensor:Operative sensor needs to work in liquid environment, such as hydraulic pressure, oil pressure sensor, and The sensor used in underwater operation equipment, and working environment often meet the sensor of water, these sensors are using the painting After layer, can ensure will not cause faulty sensor because of liquid intrusion mechanical equipment internal structure.
(6), most of 3C Products:Such as mobile phone, notebook, PSP.
(7), other equipment for needing waterproof:Including needing the operation in wet environment, or it is likely encountered common liquid The fortuitous event such as splash, the equipment of internal light current circuit normal operation can be influenced.
Multi-functional nano coating prepared by this method can be applicable to following different environment and its correlation being related to Product:
It is waterproof and dampproof mould proof:
1 house interior trim:Toilet top surface, wallpaper, pendent lamp, curtain, window screening.2 daily necessitiess:Mosquito net, desk lamp cover, chopsticks Basket, automobile rearview mirror.3 historical relics and the art work:Copybook, antiques, woodcarving, leather, bronze ware, silk, ancient costume, ancient books.4 electronics member Device and electronic product:Sensor (operation in moist or dirty environment), each electronic product (electronic sphygmomanometer, intelligent hand Table) chip, wiring board, mobile phone, LED screen, hearing aid.5 precision instruments and optical device:Mechanical watch, microscope.
Acid and alkali resistance solvent, acid and alkali resistance salt fog, acid resistance air:
1 house inside gadget:Wallpaper, ceramic tile.2 safety devices:Acidproof (alkali) gloves, acidproof (alkali) protective garment.3 mechanical equipments And pipeline:Flue desulfurization equipment, seal (acid/base lubricating oil), pipeline, valve, Large Diameter Pipeline sea conveyance conduit liner etc. Place.4 various reaction kettles, reactor.The production of 5 chemicals, storage;Sewage disposal, aeration tank;6 is other:Soda acid workshop, alkali prevention The every profession and trades such as aerospace, electricity power, Ferrous Metallurgy, petrochemical industry, medical treatment, storage container, statue (reduce acid rain to its Corrosion), sensor (under acid/base environment).
Organic solvent-resistant soaks, resistance to cosmetics, resistance to sweat:
1 such as alkane, alkene, alcohol, aldehyde, amine, ester, ether, ketone, aromatic hydrocarbon, hydrogenate hydrocarbon, terpene hydrocarbon, halogenated hydrocarbons, jeterocyclic chemistry Thing, nitrogenous compound and sulfur-containing compound solvent etc.;2 toiletry bag packaging containers;3 Fingerprint Locks, earphone.
Cold-resistant thermal cycle impact (- 40 DEG C~+75 DEG C), wet-heat resisting alternation (humidity 75%~95%):Electrician, electronics, vapour Car electric appliance, such as aviation, automobile, household electrical appliances, the equipment in scientific research field.
Embodiment
With reference to the present invention will be described in detail with specific embodiment, but the invention is not limited in specific embodiment.
Embodiment 1
A kind of method that small-power continuous discharge prepares multi-functional nano protecting coating, comprises the following steps:
(1) base material is placed in the reaction chamber of nano coating Preparation equipment, closed reaction chamber simultaneously connects reaction chamber It is continuous to vacuumize, the indoor vacuum of reaction chamber is extracted into 10 millitorrs, is passed through inert gas Ar, opening movement mechanism, makes base material exist Movement is produced in reaction chamber;Base material is solid material in step (1), and the solid material is block polyfluortetraethylene plate Material, and the substrate surface prepares its any interface after mould proof nano coating and can be exposed to GJB150.10A-2009 moulds and surveys Test ring uses in border.
The volume of reaction chamber is 50L in step (1), and the temperature control of reaction chamber is passed through inert gas at 30 DEG C Flow is 5sccm.
Base material produces movement in reaction chamber in step (1), and substrate transport form carries out for base material relative response chamber Circular motion, rotating speed are 1 turn/min.
(2) monomer vapours are passed through in reaction chamber, when to vacuum being 30 millitorr, plasma discharge is opened, carries out Chemical vapor deposition, deposition process include pretreatment stage and plate mem stage, pretreatment stage plasma discharge power 120W, Time 900s, subsequently into plating mem stage, plasma discharge power is 10W, time 7200s, in substrate surface chemical gaseous phase Deposition prepares mould proof nano coating.
In step (2):
Monomer vapours are passed through to be atomized, being volatilized by charge pump by monomer, reaction chamber is introduced by 10 millitorr of low pressure, The flow for being passed through monomer vapours is 1000 μ L/min;
Monomer vapours component is:
The mixture of two kinds of single functionality unsaturation fluorocarbon resins and two kinds of polyfunctionality unsaturated hydrocarbons analog derivatives, monomer Mass fraction in steam shared by polyfunctionality unsaturated hydrocarbons analog derivative is 15%;
The single functionality unsaturation fluorocarbon resin is:2- perfluoro capryls ethyl acrylate, 2- (perfluoro hexyl) ethyl first Base acrylate;
The polyfunctionality unsaturated hydrocarbons analog derivative is:Ethylene glycol diacrylate, 1,6 hexanediol diacrylate;
Step (2) the plasma discharge mode is continuous radio frequency discharge.
(3) plated film terminates, and stopping is passed through starting monomer steam, while stops plasma discharge, persistently vacuumizes, and keeps Reaction cavity vacuum is 10 millitorrs, and air is passed through after 1min to an atmospheric pressure, then takes out base material.
Obtained deposition has the polyfluortetraethylene plate performance test effect of mould proof coating as follows:
Embodiment 2
A kind of method that small-power continuous discharge prepares multi-functional nano protecting coating, comprises the following steps:
(1) base material is placed in nano coating Preparation equipment reaction chamber, closed reaction chamber is simultaneously continuous to reaction chamber Vacuumize, the indoor vacuum of reaction chamber is extracted into 60 millitorrs, be passed through inert gas He, start motion, carry out base material Movement;
Base material is solid material in step (1), and the solid material is block aluminum alloy materials, and the substrate surface system Its any interface can be exposed in acid, alkali test environment after standby acid and alkali resistance environment coating.
The volume of reaction chamber is 250L in step (1), and the temperature control of reaction chamber is passed through inert gas at 40 DEG C Flow is 15sccm.
Base material carries out planetary motion in step (1), and revolution speed is 1 turn/min, and rotational velocity is 1.5 turns/min.
(2) monomer vapours are passed through in reaction chamber, when vacuum is 90 millitorr, plasma discharge is opened, is changed Learn vapour deposition, pretreatment stage power 200W, time 700s, subsequently into plating mem stage, discharge power 30W, time 6000s, the nano coating of acid and alkali resistance environment is prepared in substrate surface chemical vapor deposition.
In step (2):
Monomer vapours are passed through to be atomized, being volatilized by charge pump by monomer, reaction cavity is introduced by 60 millitorr of low pressure, The flow for being passed through monomer vapours is 700 μ L/min;
Monomer vapours component is:
The mixture of three kinds of single functionality unsaturation fluorocarbon resins and two kinds of polyfunctionality unsaturated hydrocarbons analog derivatives, monomer Mass fraction in steam shared by polyfunctionality unsaturated hydrocarbons analog derivative is 35%;
The single functionality unsaturation fluorocarbon resin is:2- (perfluoro decyl) ethylmethyl acrylate, 2- (perfluors 12 Alkyl) ethyl propylene acid esters, (perfluorocyclohexyl) methacrylate;
The polyfunctionality unsaturated hydrocarbons analog derivative is:Two propylene of tri (propylene glycol) diacrylate and polyethylene glycol Acid esters;
Step (2) plasma discharge mode is intermediate frequency continuous discharge, and the waveform of intermediate frequency electric discharge is sinusoidal.
(3) plated film terminates, and stopping is passed through starting monomer steam, while stops plasma discharge, persistently vacuumizes, and keeps Reaction cavity vacuum is 80 millitorrs, and air is passed through after 2min to an atmospheric pressure, then takes out base material.
After above-mentioned aluminum alloy materials plated film, acid, alkalescence test effect are as follows:
Embodiment 3
A kind of method that small-power continuous discharge prepares multi-functional nano protecting coating, comprises the following steps:
(1) base material is placed in nano coating Preparation equipment reaction chamber, closed reaction chamber is simultaneously continuous to reaction cavity Vacuumize, the indoor vacuum of reaction chamber is extracted into 130 millitorrs, be passed through inert gas Ar, start motion, carry out base material Movement;
Base material is solid material in step (1), and the solid material is bulk alloy steel plate materials, and the substrate surface Its any interface can be exposed in organic solvent test environment after preparing organic solvent-resistant immersion and the coating of resistance to cosmetics.
The volume of reaction chamber is 480L in step (1), and the temperature control of reaction chamber is passed through inert gas at 50 DEG C Flow is 60sccm,.
Base material carries out circular motion in step (1), and rotating speed is 3 turns/min.
(2) monomer vapours are passed through in reaction chamber, when vacuum is 150 millitorr, plasma discharge is opened, is changed Learn vapour deposition, pretreatment stage power 250W, time 580s, subsequently into plating mem stage, discharge power 45W, time 4000s, the nano coating of organic solvent-resistant immersion and resistance to cosmetics is prepared in substrate surface chemical vapor deposition.
In step (2):
Monomer vapours are passed through to be atomized, being volatilized by charge pump by monomer, reaction cavity is introduced by 10 millitorr of low pressure, The flow for being passed through monomer vapours is 550 μ L/min;
Monomer vapours component is:
The mixture of two kinds of single functionality unsaturation fluorocarbon resins and two kinds of polyfunctionality unsaturated hydrocarbons analog derivatives, monomer Mass fraction in steam shared by polyfunctionality unsaturated hydrocarbons analog derivative is 45%;
The single functionality unsaturation fluorocarbon resin is:(perfluorocyclohexyl) methacrylate and 2- (perfluoro hexyl) second Methyl acrylate;
The polyfunctionality unsaturated hydrocarbons analog derivative is:Ethoxylated trimethylolpropane triacrylate and diethyl two Alcohol divinyl ether;
Step (2) plasma discharge mode is high frequency continuous discharge, and the waveform of high-frequency discharge is bipolar pulse.
(3) plated film terminates, and stopping is passed through starting monomer steam, while stops plasma discharge, persistently vacuumizes, and keeps Reaction cavity vacuum is 130 millitorrs, and air is passed through after 3min to an atmospheric pressure, then takes out base material.
After above-mentioned alloy-steel plate material film plating, organic solvent-resistant test effect is as follows:
Embodiment 4
A kind of method that small-power continuous discharge prepares multi-functional nano protecting coating, comprises the following steps:
(1) base material is placed in nano coating Preparation equipment reaction chamber, closed reaction chamber is simultaneously continuous to reaction cavity Vacuumize, the indoor vacuum of reaction chamber is extracted into 160 millitorrs, be passed through inert gas He, start motion, carry out base material Movement;
Base material is solid material in step (1), and the solid material is block aluminum material and pcb board, and the base material Its any interface can be exposed in hot and cold loop test environment after surface prepares cold-resistant thermal cycle impact coating.
The volume of reaction chamber is 680L in step (1), and the temperature control of reaction chamber is passed through inert gas at 50 DEG C Flow is 160sccm.
Base material carries out straight reciprocating motion, movement velocity 20mm/min in step (1).
(2) monomer vapours are passed through in reaction chamber, when vacuum is 190 millitorr, plasma discharge is opened, is changed Learn vapour deposition, pretreatment stage power 300W, time 350s, subsequently into plating mem stage, discharge power 55W, time 2200s, the nano coating of cold-resistant thermal cycle impact is prepared in substrate surface chemical vapor deposition.
In step (2):
Monomer vapours are passed through to be atomized, being volatilized by charge pump by monomer, reaction chamber is introduced by 160 millitorr of low pressure Room, the flow for being passed through monomer vapours are 220 μ L/min;
Monomer vapours component is:
The mixture of three kinds of single functionality unsaturation fluorocarbon resins and three kinds of polyfunctionality unsaturated hydrocarbons analog derivatives, monomer Mass fraction in steam shared by polyfunctionality unsaturated hydrocarbons analog derivative is 55%;
The single functionality unsaturation fluorocarbon resin is:The fluoro- 1- propine of 3,3,3- tri-, 3- (perfluor -5- methylhexyls) -2- Hydroxy propyl methacrylate, 1H, 1H, 2H, 2H- perfluorooctanol acrylate;
The polyfunctionality unsaturated hydrocarbons analog derivative is:Ethoxylated trimethylolpropane triacrylate, two propylene Sour glycol ester and 1,6 hexanediol diacrylate;
Step (2) plasma discharge mode is discharged for microwave continuous.
(3) plated film terminates, and stopping is passed through starting monomer steam, while stops plasma discharge, persistently vacuumizes, and keeps Reaction cavity vacuum is 160 millitorrs, and air is passed through after 4min to an atmospheric pressure, then takes out base material.
Block aluminum material and pcb board after above-mentioned plated film, cold cycling shock-testing effect are as follows:
Embodiment 5
A kind of method that small-power continuous discharge prepares multi-functional nano protecting coating, comprises the following steps:
(1) base material is placed in nano coating Preparation equipment reaction chamber, closed reaction chamber is simultaneously continuous to reaction cavity Vacuumize, the indoor vacuum of reaction chamber is extracted into 200 millitorrs, be passed through inert gas Ar, start motion, carry out base material Movement;
Base material is solid material in step (1), and the solid material is electronic component, and the substrate surface prepare it is resistance to Its any interface can be exposed in damp and hot test environment after damp and hot alternation coating.
The volume of reaction chamber is 1000L in step (1), and the temperature control of reaction chamber is passed through inert gas at 60 DEG C Flow be 300sccm.
Base material carries out curved reciprocating movement, speed 100mm/min in step (1).
(2) monomer vapours are passed through in reaction chamber, when vacuum is 300 millitorr, plasma discharge is opened, is changed Learn vapour deposition, pretreatment stage power 400W, time 60s, subsequently into plating mem stage, discharge power 75W, time 600s, the nano coating of wet-heat resisting alternation is prepared in substrate surface chemical vapor deposition.
In step (2):
Monomer vapours are passed through to be atomized, being volatilized by charge pump by monomer, reaction chamber is introduced by 200 millitorr of low pressure Body, the flow for being passed through monomer vapours are 10 μ L/min;
Monomer vapours component is:
The mixture of three kinds of single functionality unsaturation fluorocarbon resins and two kinds of polyfunctionality unsaturated hydrocarbons analog derivatives, monomer Mass fraction in steam shared by polyfunctionality unsaturated hydrocarbons analog derivative is 65%;
The single functionality unsaturation fluorocarbon resin is:1H, 1H, 2H, 2H- perfluorooctanol acrylate, 3,3,3- tri- are fluoro- 1- propine and 2- (perfluoro hexyl) ethylmethyl acrylate;
The polyfunctionality unsaturated hydrocarbons analog derivative is:Tri (propylene glycol) diacrylate and diacrylate ethylene glycol Ester;
Step (2) plasma discharge mode is spark discharge.
(3) plated film terminates, and stopping is passed through starting monomer steam, while stops plasma discharge, persistently vacuumizes, and keeps Reaction cavity vacuum is 200 millitorrs, and air is passed through after 5min to an atmospheric pressure, then takes out base material.
Electronic component after above-mentioned plated film, damp and hot alternation test effect are as follows:
Embodiment 6
The present embodiment is identical with the processing step that embodiment 1 is basic, and different technological parameters is as follows:
1st, the indoor vacuum of reaction chamber is extracted into 120 millitorrs by step (1), is passed through inert gas Ar;
Step (1) base material is solid material, and the solid material is electric component, and substrate surface preparation waterproof is resistance to The environment that its any interface can be exposed to described in International Industry waterproofing grade standard IPX7 after electrical breakdown coating uses.
The volume of reaction chamber is 400L in step (1), and the temperature control of reaction chamber is passed through inert gas at 40 DEG C Flow is 150sccm.
(2) monomer vapours are passed through in reaction chamber, when vacuum is 160 millitorr, plasma discharge is opened, is changed Learn vapour deposition, pretreatment stage power 380W, time 400s, subsequently into plating mem stage, discharge power 20W, time 3600s, the resistance to nano coating being powered under water is prepared in substrate surface chemical vapor deposition.
In step (2):Monomer vapours are passed through to be atomized, being volatilized by charge pump by monomer, are drawn by 160 millitorr of low pressure Enter reaction chamber, the flow for being passed through monomer vapours is 200 μ L/min;
Monomer vapours component is:
The mixture of four kinds of single functionality unsaturation fluorocarbon resins and two kinds of polyfunctionality unsaturated hydrocarbons analog derivatives, monomer Mass fraction in steam shared by polyfunctionality unsaturated hydrocarbons analog derivative is 48%;
The single functionality unsaturation fluorocarbon resin is:2- (perfluoro decyl) ethylmethyl acrylate, 1H, 1H, 2H, The fluoro- 1- propine of 2H- perfluorooctanols acrylate, 3,3,3- tri- and 2- (perfluoro hexyl) ethylmethyl acrylate;
The polyfunctionality unsaturated hydrocarbons analog derivative is:Tri (propylene glycol) diacrylate and diethylene glycol divinyl Base ether;
2nd, step (3) keeps reaction cavity vacuum to be passed through air to an atmospheric pressure after 160 millitorr 5min.
Electric component after above-mentioned plated film, resistance to underwater powered, underwater soaking experiment effect are as follows:
Following table reaches time test used in 1mA for coating manufactured in the present embodiment electric current under different voltages:
Voltage 3.8V 5V 12.5V
Time >48h > 24h > 24h
It is working properly that IPX 7 tests (underwater 1m submerging test 30min) electric component.

Claims (7)

1. a kind of method that small-power continuous discharge prepares multi-functional nano protecting coating, it is characterised in that:Including following step Suddenly:
(1) base material is placed in the reaction chamber of nano coating Preparation equipment, reaction chamber is continuously vacuumized, by reaction chamber Interior vacuum is extracted into 10~200 millitorrs, and is passed through inert gas He or Ar, and opening movement mechanism, makes base material in reaction chamber Indoor generation campaign;
(2) monomer vapours are passed through in reaction chamber, is 30~300 millitorrs to vacuum, opens plasma discharge, changed Learn vapour deposition, deposition process includes pretreatment stage and plating mem stage, pretreatment stage plasma discharge power for 120~ 400W, 60~900s of continuous discharging time, subsequently into plating mem stage, adjustment plasma discharge power is 10~75W, is continued Discharge time 600s~7200s, multi-functional nano coating is prepared in substrate surface chemical vapor deposition;
The monomer vapours component is:
The mixture of at least one single functionality unsaturation fluorocarbon resin and at least one polyfunctionality unsaturated hydrocarbons analog derivative, Mass fraction in the monomer vapours shared by polyfunctionality unsaturated hydrocarbons analog derivative is 15~65%;
The single functionality unsaturation fluorocarbon resin includes:
3- (perfluor -5- methylhexyls) -2- hydroxy propyl methacrylates, 2- (perfluoro decyl) ethylmethyl acrylate, 2- (perfluoro hexyl) ethylmethyl acrylate, 2- (perfluorododecyl) ethyl propylenes acid esters, 2- perfluoro capryl acrylic acid second Ester, 1H, 1H, 2H, 2H- perfluorooctanols acrylate, 2- (perfluoro butyl) ethyl propylenes acid esters, (2H- perfluoro propyls) -2- propylene Acid esters, (perfluorocyclohexyl) methacrylate, the fluoro- 1- propine of 3,3,3- tri-, 1- acetenyl -3,5- difluorobenzenes or 4- acetenyls Benzotrifluoride;
The polyfunctionality unsaturated hydrocarbons analog derivative includes:
Ethoxylated trimethylolpropane triacrylate, tri (propylene glycol) diacrylate, polyethyleneglycol diacrylate, 1,6 hexanediol diacrylate, ethylene glycol diacrylate, diethylene glycol divinyl ether or diacrylate neopentyl glycol Ester;
(3) stop being passed through monomer vapours, while stop plasma discharge, persistently vacuumize, holding reaction chamber vacuum is Air is passed through after 10~200 1~5min of millitorr to an atmospheric pressure, stops the movement of base material, then takes out base material.
2. the method that a kind of small-power continuous discharge according to claim 1 prepares multi-functional nano protecting coating, its It is characterized in that:Base material produces movement in reaction chamber in the step (1), and substrate transport form is base material relative response chamber Straight reciprocating motion or curvilinear motion are carried out, the curvilinear motion includes circular motion, ellipse circular motion, planetary motion, sphere Movement or the curvilinear motion of other irregular routes.
3. the method that a kind of small-power continuous discharge according to claim 1 prepares multi-functional nano protecting coating, its It is characterized in that:Base material is solid material in the step (1), and the solid material is electronic product, electric component, Electronic Assemblies Semi-finished product, pcb board, metallic plate, polytetrafluoroethylene (PTFE) plate or electronic component, and the substrate surface prepare multifunctionality and receive Its any interface can be exposed to water environment, mould environment, acid, basic solvent environment, acid, alkaline salt mist environment, acid after rice coating Property atmospheric environment, organic solvent immersion environment, cosmetics environment, sweat environment, cold cycling shock environment or damp and hot alternation ring Used in border.
4. the method that a kind of small-power continuous discharge according to claim 1 prepares multi-functional nano protecting coating, its It is characterized in that:The volume of reaction chamber is 50~1000L in the step (1), the temperature control of reaction chamber at 30~60 DEG C, It is 5~300sccm that the inert gas, which is passed through flow,.
5. the method that a kind of small-power continuous discharge according to claim 1 or 4 prepares multi-functional nano protecting coating, It is characterized in that:The reaction chamber is rotator shaped chamber or cube shaped chamber.
6. the method that a kind of small-power continuous discharge according to claim 1 prepares multi-functional nano protecting coating, its It is characterized in that:In the step (2):Monomer vapours are passed through to be atomized, being volatilized and by low pressure 10 by charge pump by monomer ~200 millitorrs introduce reaction chamber, and the flow for being passed through monomer is 10~1000 μ L/min.
7. the method that a kind of small-power continuous discharge according to claim 1 prepares multi-functional nano protecting coating, its It is characterized in that:In the step (2), plasma discharge manner for radio frequency discharge, microwave discharge, intermediate frequency electric discharge, high-frequency discharge, The waveform of spark discharge, the high-frequency discharge and intermediate frequency electric discharge is sinusoidal or bipolar pulse.
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US16/688,845 US11742186B2 (en) 2017-05-21 2019-11-19 Multi-functional protective coating
US16/688,589 US11270871B2 (en) 2017-05-21 2019-11-19 Multi-layer protective coating
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