CN104672704A - Method for preparing PVC conductive composite material through mechanical milling method - Google Patents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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- Polymers & Plastics (AREA)
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Abstract
The invention relates to the field of conductive composite material processes and particularly discloses a method for preparing a PVC conductive composite material through a mechanical milling method. The method comprises the following steps: putting the graphite in the absolute ethyl alcohol containing a coupling agent, stirring under a constant temperature till the graphite is dispersed in the ethyl alcohol, performing extraction filtration, baking the graphite to obtain the modified graphite, putting the modified graphite and the PVC at a ratio of (15-20%): (80-85%) into a circulating water type high-energy ball mill, performing mechanical milling for 0.5-2.5 hours to obtain the mixed materials, filling the mixed materials in a mould of a press vulcanizer, performing high temperature heat pressing and demoulding to obtain the PVC conductive composite material. By adopting the preparation method, the interface difference between the graphite and the PVC is eliminated so that the graphite is uniformly dispersed in the PVC matrix; a dense conductive network is formed inside the composite material so that the conductive performance of the composite material is obviously reinforced; and besides the method is high in reaction efficiency, energy-saving, free of industrial waste and low in production cost.
Description
Technical field
The present invention relates to conducing composite material manufacture field, specifically a kind of mechanical attrition method prepares the method for PVC conducing composite material.
Background technology
PVC(polyvinyl chloride) be one of five large general-purpose plastics, domestic and international turnout is very big, and range of application is wide.A big chunk product in daily life is all prepared by PVC, but some defects himself existed, as electrical insulating property, greatly limit its range of application.Insulation PVC is prepared into the good matrix material of conductivity, the application of PVC in fields such as unicircuit, chemical industry equipment, housing material, space flight and aviation can be expanded.
Conductive plastics can be divided into structural conductive plastics and composite conductive plastic by making method classification.Structural conductive plastics are also known as intrinsically conducting plastics, refer to the plastics that itself there is electroconductibility or there is electroconductibility after chemical modification, mainly comprise: (1) pi-conjugated system polymer: as polyacetylene, (Sr) n, line style polyphenyl, stratiform superpolymer etc.; (2) metallo-chelate: as polyketone phthalocyanine; (3) electric charge mobile model high-molecular complex: as polycation, CQ complex compound.The production cost of structural conductive plastics is high, technology difficulty large, and there is no a large amount of production so far, the conductive plastics of widespread use is all generally composite conductive plastic, and this kind of material preparation method is simple, cost is low, is applicable to suitability for industrialized production.The conductive filler material of composite conductive plastic mainly contains: (1) metal dispersion system; (2) carbon black system; (3) organic complex dispersed system.This class conductive filler material price is higher, is unfavorable for reducing material cost.Graphite is a kind of good electrical conductor, electrical industry is widely used in and manufactures electrode, positive pole that brush, carbon-point, carbon pipe, mercury are just flowing device, graphite gasket, phone parts, the coating etc. of television picture tube, and graphite wide material sources, cheap, be very suitable for the weighting agent as conductive plastics.
In composite conductive plastic preparation method, traditional method utilizes Banbury mixer by plastic substrate and conductive filler material internal mixing and plasticizing according to a certain percentage, then put into two spiral shell mill extruding pelletization, hot-forming with vulcanizing press.Chinese patent CN201410566862 discloses a kind of super-low resistance conductive plastics and preparation method thereof, the weight percent that this super-low resistance conductive plastics accounts for by each component prepares primarily of following raw material: the oxidation inhibitor of the plastic carrier of 30-45%, the conductive filler material of 45-65%, the tensio-active agent of 2-5%, the lubricant of 0.5-2% and 0.3-0.5%, this invention is by mixing each component by described weight percent, then adopt Banbury mixer banburying shaping, extruding pelletization, makes conductive plastics finished product.The method easily causes plastic substrate and conductive filler material to mix uneven, and materials conductive performance heterogeneity, conductivity is more weak.
There is the multiple working method preparing composite conductive plastic in recent years, can be divided into according to processing mode with to the difference of ingredient requirement: melting mixing, solution blending, powder mixing etc.
Melting mixing is mixed by mixing facilities with molten plastic by conductive filler material powder, then machine-shaping.Chinese patent CN200910010679 discloses a kind of spy and leads carbon black filled PVC/EPR foam conductive NTC material melt blending preparation method, lead carbon black (HG-1P) for conductive filler material with spy, polyvinyl chloride (PVC) and ethylene-propylene rubber(EPR) (EPR) are polymeric matrix, dioctyl phthalate (DOP) (DOP) is softening agent, stearic acid (St) is lubricant, Cellmic C 121 (AC) is whipping agent, Zinic stearas (Zn-St) is foaming synergist, dicumyl peroxide (DCP) is linking agent, calcium/zinc Ca/Zn one package stabilizer is thermo-stabilizer, refining melt blending working method is opened in employing, prepare PVC/EPR foam conductive NTC material.This method needs high temperature and long period to carry out mixing in the process of melting mixing, therefore has toxic gas as Cl
2release, be unfavorable for environmental protection, and need the operating process of high temperature highly energy-consuming, economically consider, cost is higher, and the method is widely used in plastic product industry now, its technical maturity, sheet material good mechanical property.
Solution blending: this method is dissolved in suitable solvent by plastics and conductive filler material, and dispersed rear acquisition plastics and conducting filler combination, by compound fusion-cast, extrude or compression molding.Chinese patent CN201310270671 discloses a kind of polyvinyl chloride semiconduction composite flexible material and its production and use, the preparation method of this matrix material is: (1), pour softening agent into agitator stainless steel vessel in, under constant speed uniform stirring, control temperature is between 20 DEG C ~ 30 DEG C, slowly pour Super-conductive carbon into, mixing immersion more than 20 hours; (2), immersion mixture and polyvinyl chloride (PVC) RESINS are put into spinfunction and in establish in the mixing tank of stirring, it is 80 ~ 100 revs/min in speed of rotation, stirring velocity is under the condition of 50-60 rev/min, mixes, and obtaining size is the black particle of 1 ~ 3mm; (3), black particle and other raw material are joined in Buss mixing roll, carry out reciprocating mixing, granulation, dry, to obtain final product.This method is polluted high, and the recovery of solvent and Non-toxic are very difficult technological difficulties of capturing, and environmental protection effect is poor.
Powder mixes: powder mixing process is that plastics and conductive filler material process is ground to form superfine powder, makes its Homogeneous phase mixing, then it is shaping to carry out fusion-cast.Powder mixing is the promising utilisation technology of current most, and environmental protection effect is strong.Chinese patent CN201410547858 discloses a kind of Graphene silicone resin conducing composite material, belong to electro-conductive material technical field, Graphene silicone resin conducing composite material described in this invention joins grinding in ball grinder by Graphene and methyl phenyl silicone resin and mixes obtained, and the weight ratio of Graphene and methyl phenyl silicone resin is 1:20 ~ 500.The method often also exists stopping composition and disperses uneven problem, causes material composition heterogeneity, unstable properties.
In sum, the existing method preparing composite conductive plastic also exists many deficiencies, limits suitability for industrialized production and the large-scale application of this material.Therefore, develop a kind of economical and practical, safety and environmental protection, method easily and effectively, prepare the conductive plastics that conductivity is excellent, to improving plastics performance, expand plastic applications field, to save metals resources significant.
Summary of the invention
The object of the invention is to overcome existing powder to be mixed with electro-conductive material method and to there is uneven, the material composition heterogeneity of stopping composition dispersion, the problems such as unstable properties, provide a kind of mechanical attrition method to prepare the method for PVC conducing composite material.
The solution of the present invention is by realizing like this:
(1) graphite is placed in the dehydrated alcohol containing coupling agent, coupling agent consumption is the 1-3% of graphite weight, and constant temperature is stirred to graphite and is dispersed in ethanol, suction filtration, is dried by graphite, obtains modified graphite; After coupling agent carries out surface modification to graphite, graphite granule surface chemistry energy can be reduced, eliminate the interface difference between graphite and PVC, graphite is enable to be evenly dispersed in PVC matrix, be conducive to graphite and form more intensive conductive network at intrinsic silicon, improve the conductivity of matrix material.
(2) modified graphite is mixed by the weight ratio of 15-20%:80-85% with PVC, put into circulating water type high energy ball mill and carry out mechanical ball milling, the temperature of mechanical ball milling is 45-50 DEG C, rotating speed is 100-300 rpm, time is 0.5-2.5 h, make graphite evenly spread in PVC matrix, obtain compound; The ball mill used on the market does not have recirculated water substantially, applicant uses common ball mill to research and develop, but the product color obtained is uneven, product performance are also very unstable, circulating water type high energy ball mill can take away by recirculated water a large amount of heat energy produced in mechanical milling process, under control ball milling is in suitable temp, avoid the rising generation performance of PVC along with temperature or the change of color and luster.
(3) take out compound, be filled in the mould of vulcanizing press, at temperature 160-180 DEG C, hot pressing 10 ~ 20 min under pressure 5-8 MPa, the demoulding obtains PVC conducing composite material.
Preferably, described coupling agent consumption is 2% of graphite weight.
Preferably, described coupling agent is any one in silane KH570, Aluminate, titanic acid ester.
Preferably, described modified graphite and the weight ratio of PVC are 20%:80%.
Preferably, the temperature of described mechanical ball milling is 50 DEG C.
Preferably, the rotating speed of described mechanical ball milling is 150 rpm.
Preferably, the time of described mechanical ball milling is 1.0 h.
Preferably, the temperature of described hot pressing is 165 DEG C.
Preferably, the pressure of described hot pressing is 5 MPa.
Preferably, the time of described hot pressing is 15 min.
Under above optimum condition, the PVC conductive composite material resistance rate prepared by the present invention is minimum, and conductivity is excellent.
The present invention realize know-why be: coupling agent is made up of two portions: a part is close inorganic group, can with inorganic filler or strongthener effect, another part is close organic group, can with synthetic resins effect.Adopt coupling agent (silane KH570, Aluminate, titanic acid ester) process graphite after, the close inorganic group of coupling agent forms polar group by strong chemical bond and graphite, graphite surface character is changed, surface chemistry can reduce, interface difference between itself and PVC is eliminated, the close organic group of coupling agent is combined with PVC simultaneously, thus graphite and PVC are connected together as " bridge " by coupling agent, through the mechanical ball milling of circulating water type high energy ball mill, graphite is evenly dispersed in PVC matrix, composite inner forms more intensive conductive network, conductivity strengthens.
The present invention possesses following good result:
(1) the present invention improves on the basis of being prepared by conventional powder hybrid system to conducing composite material, coupling agent is adopted to carry out surface modification to graphite, reduce graphite granule surface chemistry energy, eliminate the interface difference between graphite and PVC, enable graphite be evenly dispersed in PVC matrix, form mixed powder particle that is very tiny, that mix, final realization shortens material Ball-milling Time, improve reaction efficiency, save every energy.
(2) ball mill used on the market does not at present have recirculated water substantially, applicant uses common ball mill to research and develop, but the product color obtained is uneven, product performance are also very unstable, so applicant's self-control have developed with circulating water type high energy ball mill, after the circulating water type high energy ball mill used, the a large amount of heat energy produced in mechanical milling process are taken away by recirculated water, under control ball milling is in suitable temp, avoid the rising generation performance of PVC along with temperature or the change of color and luster, keep the better quality of matrix material.
(3) the present invention utilizes the preparation method's technique after optimization and formula for a product, the conducing composite material inside obtained forms more intensive conductive network, conductivity significantly strengthens, its conduction is oozed and is exceeded threshold values lower than 6%, resistivity is minimum reaches 0.169 Ω cm, product mechanical property is tested as tensile strength is more than 20MPa according to GB GB1040-1992 and GB9341-2000, and flexural strength is 16 more than MPa.
(4) conducing composite material that prepared by the present invention has that resistivity easily adjusts, light weight, easily processing, the advantage such as wear-resistant, anticorrosive.
(5) preparing conduction with the method such as melting mixing, solution blending, powder mixing conventional at present meets compared with material, in preparation method's process of the present invention, on the basis introducing mechanical activation method, except basic raw material, do not need to add the poisonous and harmful chemical reagent such as softening agent, lubricant, whipping agent, therefore do not discharge poisonous fume waste material, environmental protection effect is strong, raw materials used all cheap, PVC conducing composite material production cost is reduced.
Accompanying drawing explanation
Fig. 1. mechanical attrition method of the present invention prepares the method flow diagram of PVC conducing composite material.
Embodiment
Prepare the method for PVC conducing composite material below in conjunction with embodiment and a kind of mechanical attrition method of description the present invention, these descriptions are not be further limited content of the present invention.
embodiment 1
The preparation method of this PVC conducing composite material in the present embodiment, first be graphite is placed in the dehydrated alcohol adding coupling agent silane KH570, the consumption of silane KH570 is 2% of graphite weight, constant temperature is stirred to graphite dispersion in ethanol, suction filtration, graphite is dried, obtain modified graphite, modified graphite and PVC are put into circulating water type high energy ball mill in the ratio of 20%:80%, at rotating speed 150 rpm, mechanical ball milling 1 h under temperature 50 C, graphite is made to evenly spread in PVC matrix, obtain compound, compound is filled in the mould of vulcanizing press, at pressure 5MPa, hot pressing 15min at temperature 165 DEG C, the demoulding obtains PVC conducing composite material.
Its conduction of the product that the present embodiment prepares is oozed and is exceeded threshold values lower than 6%, and resistivity reaches 0.169 Ω cm, and tensile strength is 20.63MPa, and flexural strength is 16.88MPa.
embodiment 2
The preparation method of this PVC conducing composite material in the present embodiment, first be graphite is placed in the dehydrated alcohol adding coupling agent Aluminate, the consumption of Aluminate is 2.5% of graphite weight, constant temperature is stirred to graphite dispersion in ethanol, suction filtration, graphite is dried, obtain modified graphite, modified graphite and PVC are put into circulating water type high energy ball mill in the ratio of 15%:85%, at rotating speed 100 rpm, mechanical ball milling 2.0 h under temperature 45 C, graphite is made to evenly spread in PVC matrix, obtain compound, compound is filled in the mould of vulcanizing press, at pressure 6MPa, hot pressing 20min at temperature 160 DEG C, the demoulding obtains PVC conducing composite material.
Its conduction of the product that the present embodiment prepares is oozed and is exceeded threshold values lower than 6%, and resistivity reaches 0.499 Ω cm, and tensile strength is 21.25MPa, and flexural strength is 17.36MPa.
embodiment 3
The preparation method of this PVC conducing composite material in the present embodiment, first be graphite is placed in the dehydrated alcohol adding coupling agent titanic acid ester, the consumption of titanic acid ester is 1% of graphite weight, constant temperature is stirred to graphite dispersion in ethanol, suction filtration, graphite is dried, obtain modified graphite, modified graphite and PVC are put into circulating water type high energy ball mill in the ratio of 18%:82%, at rotating speed 300 rpm, mechanical ball milling 0.5 h at temperature 48 DEG C, graphite is made to evenly spread in PVC matrix, obtain compound, compound is filled in the mould of vulcanizing press, at pressure 7MPa, hot pressing 10min at temperature 180 DEG C, the demoulding obtains PVC conducing composite material.
Its conduction of the product that the present embodiment prepares is oozed and is exceeded threshold values lower than 6%, and resistivity reaches 0.252 Ω cm, and tensile strength is 20.95MPa, and flexural strength is 17.04MPa.
embodiment 4
The preparation method of this PVC conducing composite material in the present embodiment, first be graphite is placed in the dehydrated alcohol adding coupling agent silane KH570, the consumption of silane KH570 is 3% of graphite weight, constant temperature is stirred to graphite dispersion in ethanol, suction filtration, graphite is dried, obtain modified graphite, modified graphite and PVC are put into circulating water type high energy ball mill in the ratio of 16%:84%, at rotating speed 250 rpm, mechanical ball milling 1.5h at temperature 46 DEG C, graphite is made to evenly spread in PVC matrix, obtain compound, compound is filled in the mould of vulcanizing press, at pressure 8MPa, hot pressing 16min at temperature 170 DEG C, the demoulding obtains PVC conducing composite material.
Its conduction of the product that the present embodiment prepares is oozed and is exceeded threshold values lower than 6%, and resistivity reaches 0.370 Ω cm, and tensile strength is 21.16MPa, and flexural strength is 16.95MPa.
comparative example
Chinese patent CN201410566862, CN200910010679, CN201310270671, CN201410547858 adopt internal mixing and plasticizing, melt blending, solution blending, powder blending means to prepare conducing composite material respectively, and PVC conductive composite material resistance rate prepared by the resistivity of the conducing composite material prepared by these methods and the present invention contrasts as shown in table 1:
The resistivity of conducing composite material prepared by table 1 different methods
| Working method | Lowest resistivity (Ω cm) |
| Internal mixing and plasticizing | 0.5 |
| Melting mixing | 0.22 |
| Solution blending | 5.6 |
| Powder mixes | 287 |
| The present invention | 0.17 |
As can be known from Table 1, the PVC conductive composite material resistance rate adopting mechanical attrition method of the present invention to prepare is obviously low than the conductive composite material resistance rate adopting additive method to prepare.Therefore, the method that mechanical attrition method of the present invention prepares PVC conducing composite material compared with prior art obviously has more excellent electroconductibility.
The present invention is through multidigit conducing composite material processing staff long term operation experience accumulation, and is created by creative work, has outstanding substantive distinguishing features and significant progress.The method take PVC as base-material; take graphite as conductive filler; employing coupling agent eliminates the interface difference between graphite and PVC, makes graphite be evenly dispersed in PVC matrix, and composite inner forms more intensive conductive network; conductivity of composite material can significantly strengthen; and the method reaction efficiency is high, save energy, without industrial waste; production cost is low, can realize the doulbe-sides' victory of economic benefit and environment protection.
Claims (10)
1. mechanical attrition method prepares a method for PVC conducing composite material, it is characterized in that, comprises the following steps:
(1) graphite is placed in the dehydrated alcohol containing coupling agent, coupling agent consumption is the 1-3% of graphite weight, and constant temperature is stirred to graphite and is dispersed in ethanol, suction filtration, is dried by graphite, obtains modified graphite;
(2) modified graphite is mixed by the weight ratio of 15-20%:80-85% with PVC, put into circulating water type high energy ball mill and carry out mechanical ball milling, the temperature of mechanical ball milling is 45-50 DEG C, rotating speed is 100-300 rpm, time is 0.5-2.5 h, make graphite evenly spread in PVC matrix, obtain compound;
(3) take out compound, be filled in the mould of vulcanizing press, at temperature 160-180 DEG C, hot pressing 10 ~ 20 min under pressure 5-8 MPa, the demoulding obtains PVC conducing composite material.
2. mechanical attrition method according to claim 1 prepares the method for PVC conducing composite material, it is characterized in that, described coupling agent consumption is 2% of graphite weight.
3. mechanical attrition method according to claim 1 and 2 prepares the method for PVC conducing composite material, it is characterized in that, described coupling agent is any one in silane KH570, Aluminate, titanic acid ester.
4. mechanical attrition method according to claim 3 prepares the method for PVC conducing composite material, it is characterized in that, described modified graphite and the weight ratio of PVC are 20%:80%.
5. mechanical attrition method according to claim 4 prepares the method for PVC conducing composite material, it is characterized in that, the temperature of described mechanical ball milling is 50 DEG C.
6. mechanical attrition method according to claim 5 prepares the method for PVC conducing composite material, it is characterized in that, the rotating speed of described mechanical ball milling is 150 rpm.
7. mechanical attrition method according to claim 6 prepares the method for PVC conducing composite material, it is characterized in that, the time of described mechanical ball milling is 1.0 h.
8. mechanical attrition method according to claim 7 prepares the method for PVC conducing composite material, it is characterized in that, the temperature of described hot pressing is 165 DEG C.
9. mechanical attrition method according to claim 8 prepares the method for PVC conducing composite material, it is characterized in that, the pressure of described hot pressing is 5 MPa.
10. mechanical attrition method according to claim 9 prepares the method for PVC conducing composite material, it is characterized in that, the time of described hot pressing is 15 min.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105566724A (en) * | 2016-02-02 | 2016-05-11 | 广西大学 | Cassava residue/PE two-phase electric conduction composite and preparation method thereof |
| CN105566756A (en) * | 2016-02-02 | 2016-05-11 | 广西大学 | Cassava residue/PP two-phase electric conduction composite and preparation method thereof |
| CN105602151A (en) * | 2016-02-02 | 2016-05-25 | 广西大学 | Cassava waste/PVC two-phase conductive composite material and preparation method thereof |
| CN106832636A (en) * | 2017-02-10 | 2017-06-13 | 唐翔 | The method that mechanical attrition method prepares PS conducing composite materials |
| CN107480387A (en) * | 2017-08-22 | 2017-12-15 | 广西大学 | A kind of method of conductive polymer composites resistivity prepared by high-speed computer tool ball-milling method |
| CN110882627A (en) * | 2019-12-19 | 2020-03-17 | 广西江邕环保科技有限公司 | Combined volatile organic compound purification treatment equipment |
| CN111346587A (en) * | 2020-03-09 | 2020-06-30 | 青岛华高墨烯科技股份有限公司 | Preparation device for graphene conductive silica gel |
| CN116218100A (en) * | 2023-03-27 | 2023-06-06 | 华侨大学 | Method for dispersing graphene in PVC resin |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105566724A (en) * | 2016-02-02 | 2016-05-11 | 广西大学 | Cassava residue/PE two-phase electric conduction composite and preparation method thereof |
| CN105566756A (en) * | 2016-02-02 | 2016-05-11 | 广西大学 | Cassava residue/PP two-phase electric conduction composite and preparation method thereof |
| CN105602151A (en) * | 2016-02-02 | 2016-05-25 | 广西大学 | Cassava waste/PVC two-phase conductive composite material and preparation method thereof |
| CN106832636A (en) * | 2017-02-10 | 2017-06-13 | 唐翔 | The method that mechanical attrition method prepares PS conducing composite materials |
| CN107480387A (en) * | 2017-08-22 | 2017-12-15 | 广西大学 | A kind of method of conductive polymer composites resistivity prepared by high-speed computer tool ball-milling method |
| CN110882627A (en) * | 2019-12-19 | 2020-03-17 | 广西江邕环保科技有限公司 | Combined volatile organic compound purification treatment equipment |
| CN111346587A (en) * | 2020-03-09 | 2020-06-30 | 青岛华高墨烯科技股份有限公司 | Preparation device for graphene conductive silica gel |
| CN116218100A (en) * | 2023-03-27 | 2023-06-06 | 华侨大学 | Method for dispersing graphene in PVC resin |
| CN116218100B (en) * | 2023-03-27 | 2024-04-12 | 华侨大学 | Method for dispersing graphene in PVC resin |
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Application publication date: 20150603 |