CN108039225A - Environment-friendly type low resistance graphene carbon fiber conductive carbon paste and preparation method thereof - Google Patents
Environment-friendly type low resistance graphene carbon fiber conductive carbon paste and preparation method thereof Download PDFInfo
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- CN108039225A CN108039225A CN201711324606.0A CN201711324606A CN108039225A CN 108039225 A CN108039225 A CN 108039225A CN 201711324606 A CN201711324606 A CN 201711324606A CN 108039225 A CN108039225 A CN 108039225A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
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Abstract
The present invention relates to conductive carbon paste preparing technical field, particularly a kind of environment-friendly type low resistance graphene carbon fiber conductive carbon paste, including following component：30 70 parts of resin, 20 40 parts of carbon fiber, 1 10 parts of graphene microchip, 10 30 parts of conductive black, 20 50 parts of solvent, 13 parts of dispersant, 13 parts of adhesion promoter, 13 parts of defoamer；Graphene and carbon fiber is used to be starched for the heat conduction carbon of main body carbon material, conductive energy is good, internal resistance is small, carbon material is evenly distributed, is easy to the characteristics of coating.
Description
Technical field
The present invention relates to conductive carbon paste preparing technical field, particularly a kind of environment-friendly type low resistance graphene electric conduction of carbon fiber
Carbon slurry and preparation method thereof.
Background technology
Conductive carbon paste is to be distributed evenly in the carbon system particulate of non-metal conductor material in thermoplasticity or thermosetting resin
The thick slurry of formation, traditionally also referred to as carbon series conductive ink.Carbon slurry through silk-screen printing, be heating and curing it is (general low
In 150 DEG C) after, obtained figure film layer has good electric conductivity, not oxidizable, and performance is stablized, and acid and alkali resistance and solvent are rotten
Erosion.The base material of the unlike materials such as its strong adhesive force with base material, antistripping, suitable PET.The sheet resistance of conductive carbon paste is typically greater than
30 Ω/sq, sheet resistance value is larger but of low cost, cost-effective compared with conductive silver paste, performance is stablized, and is electronic component envelope
Dress, electrode and the critical material of interconnection.At present, conductive carbon paste extensively should with the performance such as its excellent conduction, heat conduction, corrosion-resistant
For all conglomeraties such as thin film switch, flexible circuit, medical electronics, communication apparatus, automotive electronics, electromagnetic shielding.Market at present
On sold carbon slurry, have unstable, carbon material skewness, fever it is uneven, easy to aging the defects of.
The content of the invention
It is an object of the present invention to overcome the above-mentioned technical problems, and to provide a kind of environment-friendly type low resistance graphene carbon fiber guiding
Electrical carbon slurry and preparation method thereof, uses graphene and carbon fiber as main body carbon material, and conductive energy is good, internal resistance is small, carbon materials
Material is evenly distributed, is easy to the characteristics of coating.
The technical solution for solving above-mentioned technical problem is as follows：
Environment-friendly type low resistance graphene carbon fiber conductive carbon paste, in parts by weight, including following component：
The resin is acrylic resin and the mixture of alkyd resin；
The number of plies of graphene microchip is 10-100 layers.
Further say, resin is according to mass fraction meter, including 30-50 parts of 50-70 parts of acrylic resin and alkyd resin.
Further say, solvent is absolute ethyl alcohol, one kind in ethylene glycol, isopropanol, ethyl acetate, diethylene adipate
It is or a variety of.
Further say, dispersant is BYK Series Dispersants.
Further say, adhesion promoter is any one in silane coupling agent or titanate coupling agent.
Further say, the defoamer is organic silicon defoamer.
The method of the environment-friendly type low resistance graphene carbon fiber conductive carbon paste, comprises the following steps：
(1) formula of claim 1 is pressed, weighs carbon fiber, graphene microchip and conductive black, the side disperseed using air-flow
Formula, disperse 1-3 it is small when, three kinds of carbon materials are uniformly dispersed；
(2) formula of claim 2 is pressed, resin, solvent, dispersant, adhesion promoter and defoamer is weighed, is divided
Dissipate and stir evenly；
(3) carbon material that step (1) is uniformly mixed is added in the mixed system of step (2), carries out pre-dispersed obtain
Pre-dispersed mixed slurry；
(4) the pre-dispersed mixed slurry obtained to step (3) using milling apparatus be ground scattered 1-3 it is small when, reach
Fineness stops grinding after 1-5 μm, obtains mixing carbon slurry；
(5) vacuumizing and defoaming processing is carried out to the carbon slurry of step (4).
Further say, the operation that the air-flow described in step (1) disperses is：Three kinds of carbon materials are put into closed container
It is interior, compressed air is blown into closed container, the material in closed container is sufficiently mixed into homogeneous material in fluidisation state.
The scope of application of the environment-friendly type low resistance graphene carbon fiber conductive carbon paste, it is characterised in that the low electricity of the environment-friendly type
Resistance graphene carbon fiber conductive carbon paste is suitable for polyester resin film base material, glass fibre cloth base material or epoxy resin board base material.
The beneficial effects of the present invention are：
Conductive carbon paste performance prepared by the present invention is to be used as evaluation index using its sheet resistance.Specifically test method is：It is conductive
Carbon is starched through being screen-printed in PET base material, after drying machine dries half an hour at 120 DEG C, with four-point probe to it
Sheet resistance test is carried out, for the grain fineness of carbon slurry below 10 μm, the minimum sheet resistance of product of the present invention can reach 10 Ω/sq, low
In conductive carbon paste product at present on the market.And resistance value is highly stable after heating, surface heat temperature is uniform.
By adjusting pure carbon black, pure carbon fiber and mixing carbon material (carbon black：Carbon fiber：Graphene microchip=5:3:2,
Wt% additive amount), studies the change of the sheet resistance of conductive carbon paste.From attached drawing as can be seen that with the increase of carbon material, conductive carbon
The sheet resistance of slurry is gradually reduced, be added to it is a certain amount of after add the printing performance and adhesion performance that can influence conductive carbon paste again.
The minimum sheet resistance of pure carbon black and pure carbon fiber is 30-40 Ω/sq, and uses carbon black, carbon fiber and graphene microchip it is mixed
Zoarium system, sheet resistance is minimum can to reach 10 Ω/sq, this is because using the carbon black of zero dimension, one-dimensional carbon fiber, two-dimentional graphite
Alkene microplate, can form the conductive network of three-dimensional under less additive amount, improve the electric conductivity of conductive carbon paste.
The present invention has following advantages compared with prior art：Use the heat conduction of graphene and carbon fiber for main body carbon material
Carbon is starched, and compared with existing product, conductive energy is good, internal resistance is small, carbon material is evenly distributed, is easy to the characteristics of coating.Relatively
Disperse non-uniform technique in current carbon material, carbon material is uniformly dispersed by the method that the present invention is disperseed using air-flow, Zhi Houfen
It is dispersed in resin, achievees the purpose that to be evenly distributed.At the same time after grinding distribution is uniform, carbon is starched and carries out deaeration processing, can be very
Solve the problems, such as that silk-screen printing is in uneven thickness in the later stage well.
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Brief description of the drawings
Fig. 1 is relation curve of the mass percent with conductive carbon paste sheet resistance of independent conductive black；
Fig. 2 is relation curve of the mass percent with conductive carbon paste sheet resistance of independent carbon fiber；
Fig. 3 is conductive black, carbon fiber and graphene microchip (5:3:2) pass of mass percent and conductive carbon paste sheet resistance
It is curve.
Embodiment
Embodiment 1
Environment-friendly type low resistance graphene carbon fiber conductive carbon paste, in parts by weight, including following component：
The number of plies of graphene microchip is 10 layers.
The method of the environment-friendly type low resistance graphene carbon fiber conductive carbon paste, comprises the following steps：
(1) by formula, carbon fiber, graphene microchip and conductive black are weighed, by the way of air-flow disperses, it is small to disperse 1
When, three kinds of carbon materials are uniformly dispersed；
(2) by formula, resin, solvent, dispersant, adhesion promoter and defoamer are weighed, carries out scattered stir evenly；
(3) carbon material that step (1) is uniformly mixed is added in the mixed system of step (2), carries out pre-dispersed obtain
Pre-dispersed mixed slurry；
(4) the pre-dispersed mixed slurry obtained to step (3) using milling apparatus be ground scattered 1 it is small when, reach thin
Degree stops grinding after 1-5 μm, obtains mixing carbon slurry；
(5) vacuumizing and defoaming processing is carried out to the carbon slurry of step (4).
The operation that air-flow described in step (1) disperses is：Three kinds of carbon materials are put into closed container, to closed container
Compressed air is inside blown into, the material in closed container is sufficiently mixed into homogeneous material in fluidisation state.
The environment-friendly type low resistance graphene carbon fiber conductive carbon paste is suitable for polyester resin film base material.
Embodiment 2
Environment-friendly type low resistance graphene carbon fiber conductive carbon paste, in parts by weight, including following component：
The number of plies of graphene microchip is 100 layers.
The method of the environment-friendly type low resistance graphene carbon fiber conductive carbon paste, comprises the following steps：
(1) by formula, carbon fiber, graphene microchip and conductive black are weighed, by the way of air-flow disperses, it is small to disperse 3
When, three kinds of carbon materials are uniformly dispersed；
(2) by formula, resin, solvent, dispersant, adhesion promoter and defoamer are weighed, carries out scattered stir evenly；
(3) carbon material that step (1) is uniformly mixed is added in the mixed system of step (2), carries out pre-dispersed obtain
Pre-dispersed mixed slurry；
(4) the pre-dispersed mixed slurry obtained to step (3) using milling apparatus be ground scattered 3 it is small when, reach thin
Degree stops grinding after 1-5 μm, obtains mixing carbon slurry；
(5) vacuumizing and defoaming processing is carried out to the carbon slurry of step (4).
The operation that air-flow described in step (1) disperses is：Three kinds of carbon materials are put into closed container, to closed container
Compressed air is inside blown into, the material in closed container is sufficiently mixed into homogeneous material in fluidisation state.
The environment-friendly type low resistance graphene carbon fiber conductive carbon paste is suitable for glass fibre cloth base material.
Embodiment 3
Environment-friendly type low resistance graphene carbon fiber conductive carbon paste, in parts by weight, including following component：
The number of plies of graphene microchip is 50 layers.
The method of the environment-friendly type low resistance graphene carbon fiber conductive carbon paste, comprises the following steps：
(1) by formula, carbon fiber, graphene microchip and conductive black are weighed, by the way of air-flow disperses, it is small to disperse 2
When, three kinds of carbon materials are uniformly dispersed；
(2) by formula, resin, solvent, dispersant, adhesion promoter and defoamer are weighed, carries out scattered stir evenly；
(3) carbon material that step (1) is uniformly mixed is added in the mixed system of step (2), carries out pre-dispersed obtain
Pre-dispersed mixed slurry；
(4) the pre-dispersed mixed slurry obtained to step (3) using milling apparatus be ground scattered 2 it is small when, reach thin
Degree stops grinding after 1-5 μm, obtains mixing carbon slurry；
(5) vacuumizing and defoaming processing is carried out to the carbon slurry of step (4).
The operation that air-flow described in step (1) disperses is：Three kinds of carbon materials are put into closed container, to closed container
Compressed air is inside blown into, the material in closed container is sufficiently mixed into homogeneous material in fluidisation state.
The environment-friendly type low resistance graphene carbon fiber conductive carbon paste is suitable for epoxy resin board base material.
Embodiment 4
Environment-friendly type low resistance graphene carbon fiber conductive carbon paste, in parts by weight, including following component：
The number of plies of graphene microchip is 90 layers.
The method of the environment-friendly type low resistance graphene carbon fiber conductive carbon paste, comprises the following steps：
(1) by formula, carbon fiber, graphene microchip and conductive black are weighed, by the way of air-flow disperses, disperses 2.5
Hour, three kinds of carbon materials are uniformly dispersed；
(2) by formula, resin, solvent, dispersant, adhesion promoter and defoamer are weighed, carries out scattered stir evenly；
(3) carbon material that step (1) is uniformly mixed is added in the mixed system of step (2), carries out pre-dispersed obtain
Pre-dispersed mixed slurry；
(4) the pre-dispersed mixed slurry obtained to step (3) using milling apparatus be ground scattered 2.5 it is small when, reach
Fineness stops grinding after 1-5 μm, obtains mixing carbon slurry；
(5) vacuumizing and defoaming processing is carried out to the carbon slurry of step (4).
The operation that air-flow described in step (1) disperses is：Three kinds of carbon materials are put into closed container, to closed container
Compressed air is inside blown into, the material in closed container is sufficiently mixed into homogeneous material in fluidisation state.
The environment-friendly type low resistance graphene carbon fiber conductive carbon paste is suitable for polyester resin film base material.
Embodiment 5：
Environment-friendly type low resistance graphene carbon fiber conductive carbon paste, in parts by weight, including following component：
The number of plies of graphene microchip is 20 layers.
Adhesion promoter for silane coupling agent or in any one.
The method of the environment-friendly type low resistance graphene carbon fiber conductive carbon paste, comprises the following steps：
(1) by formula, carbon fiber, graphene microchip and conductive black are weighed, by the way of air-flow disperses, disperses 1.5
Hour, three kinds of carbon materials are uniformly dispersed；
(2) by formula, resin, solvent, dispersant, adhesion promoter and defoamer are weighed, carries out scattered stir evenly；
(3) carbon material that step (1) is uniformly mixed is added in the mixed system of step (2), carries out pre-dispersed obtain
Pre-dispersed mixed slurry；
(4) the pre-dispersed mixed slurry obtained to step (3) using milling apparatus be ground scattered 2 it is small when, reach thin
Degree stops grinding after 1-5 μm, obtains mixing carbon slurry；
(5) vacuumizing and defoaming processing is carried out to the carbon slurry of step (4).
The operation that air-flow described in step (1) disperses is：Three kinds of carbon materials are put into closed container, to closed container
Compressed air is inside blown into, the material in closed container is sufficiently mixed into homogeneous material in fluidisation state.
The environment-friendly type low resistance graphene carbon fiber conductive carbon paste is suitable for glass fibre cloth base material.
By adjusting pure carbon black, pure carbon fiber and mixing carbon material (carbon black：Carbon fiber：Graphene microchip=5:3:2,
Wt% additive amount), studies the change of the sheet resistance of conductive carbon paste.From attached drawing as can be seen that with the increase of carbon material, conductive carbon
The sheet resistance of slurry is gradually reduced, be added to it is a certain amount of after add the printing performance and adhesion performance that can influence conductive carbon paste again.
The minimum sheet resistance of pure carbon black and pure carbon fiber is 30-40 Ω/sq, and uses carbon black, carbon fiber and graphene microchip it is mixed
Zoarium system, sheet resistance is minimum can to reach 10 Ω/sq, this is because using the carbon black of zero dimension, one-dimensional carbon fiber, two-dimentional graphite
Alkene microplate, can form the conductive network of three-dimensional under less additive amount, improve the electric conductivity of conductive carbon paste.
The present invention has following advantages compared with prior art：Use the heat conduction of graphene and carbon fiber for main body carbon material
Carbon is starched, and compared with existing product, conductive energy is good, internal resistance is small, carbon material is evenly distributed, is easy to the characteristics of coating.Relatively
Disperse non-uniform technique in current carbon material, carbon material is uniformly dispersed by the method that the present invention is disperseed using air-flow, Zhi Houfen
It is dispersed in resin, achievees the purpose that to be evenly distributed.At the same time after grinding distribution is uniform, carbon is starched and carries out deaeration processing, can be very
Solve the problems, such as that silk-screen printing is in uneven thickness in the later stage well.
The above, is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is every according to
Any simply modification, the equivalent variations made in technical spirit according to the present invention to above example, each fall within the guarantor of the present invention
Within the scope of shield.
Claims (9)
1. environment-friendly type low resistance graphene carbon fiber conductive carbon paste, it is characterised in that in parts by weight, including following component：
The resin is acrylic resin and the mixture of alkyd resin；
The number of plies of graphene microchip is 10-100 layers.
2. environment-friendly type low resistance graphene carbon fiber conductive carbon paste according to claim 1, it is characterised in that the tree
Fat is according to mass fraction meter, including 30-50 parts of 50-70 parts of acrylic resin and alkyd resin.
3. environment-friendly type low resistance graphene carbon fiber conductive carbon paste according to claim 1, it is characterised in that described is molten
Agent is absolute ethyl alcohol, the one or more in ethylene glycol, isopropanol, ethyl acetate, diethylene adipate.
4. environment-friendly type low resistance graphene carbon fiber conductive carbon paste according to claim 1, it is characterised in that point
Powder is BYK Series Dispersants.
5. environment-friendly type low resistance graphene carbon fiber conductive carbon paste according to claim 1, it is characterised in that described is attached
Adhesion promoter is any one in silane coupling agent or titanate coupling agent.
6. environment-friendly type low resistance graphene carbon fiber conductive carbon paste according to claim 1, it is characterised in that described disappears
Infusion is organic silicon defoamer.
7. a kind of prepare such as the side of claim 1-6 any one of them environment-friendly type low resistance graphene carbon fiber conductive carbon pastes
Method, it is characterised in that comprise the following steps：
(1) formula of claim 1 is pressed, weighs carbon fiber, graphene microchip and conductive black, by the way of air-flow disperses,
When scattered 1-3 is small, three kinds of carbon materials are uniformly dispersed；
(2) formula of claim 2 is pressed, weighs resin, solvent, dispersant, adhesion promoter and defoamer, carries out scattered stir
Mix uniformly；
(3) carbon material that step (1) is uniformly mixed is added in the mixed system of step (2), progress is pre-dispersed to obtain pre- point
Dissipate mixed slurry；
(4) the pre-dispersed mixed slurry obtained to step (3) using milling apparatus be ground scattered 1-3 it is small when, reach fineness
Stop grinding after 1-5 μm, obtain mixing carbon slurry；
(5) vacuumizing and defoaming processing is carried out to the carbon slurry of step (4).
8. the preparation method of environment-friendly type low resistance graphene carbon fiber conductive carbon paste according to claim 7, its feature exist
In the operation that the air-flow described in step (1) disperses is：Three kinds of carbon materials are put into closed container, are blown into closed container
Enter compressed air, the material in closed container is sufficiently mixed into homogeneous material in fluidisation state.
9. a kind of scope of application of environment-friendly type low resistance graphene carbon fiber conductive carbon paste as described in claim 1-6, it is special
Sign is that the environment-friendly type low resistance graphene carbon fiber conductive carbon paste is suitable for polyester resin film base material, glass fabric base
Material or epoxy resin board base material.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108922653A (en) * | 2018-06-30 | 2018-11-30 | 中国科学院上海硅酸盐研究所 | A kind of perovskite carbon pastes used for solar batteries and electrode |
| CN109301523A (en) * | 2018-10-09 | 2019-02-01 | 国网重庆市电力公司长寿供电分公司 | A kind of the electrical engineering compound earthing material of SAP and preparation method |
| CN109640410A (en) * | 2019-01-24 | 2019-04-16 | 杭州中暖科技有限公司 | A kind of preparation method of high efficiency graphene fever carbon slurry |
| CN109817385A (en) * | 2018-12-28 | 2019-05-28 | 常州碳森石墨烯科技有限公司 | A kind of preparation method that environment-friendly type graphene conductive carbon is starched and its application on flexible heating film |
| CN112164489A (en) * | 2020-09-04 | 2021-01-01 | 苏州烯时代材料科技有限公司 | Conductive carbon paddle for blood glucose test paper, preparation method of conductive carbon paddle and blood glucose test paper |
| CN109704645B (en) * | 2019-03-18 | 2021-08-13 | 昆山福烨电子有限公司 | Production process of analog quantity sensor substrate |
| CN113983531A (en) * | 2021-12-03 | 2022-01-28 | 武汉万盛翔化学工业有限公司 | Multifunctional heating coating and electric heating coating system thereof |
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| CN112164489A (en) * | 2020-09-04 | 2021-01-01 | 苏州烯时代材料科技有限公司 | Conductive carbon paddle for blood glucose test paper, preparation method of conductive carbon paddle and blood glucose test paper |
| CN113983531A (en) * | 2021-12-03 | 2022-01-28 | 武汉万盛翔化学工业有限公司 | Multifunctional heating coating and electric heating coating system thereof |
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Application publication date: 20180515 |