CN102977742B - A kind of electrically conducting coating - Google Patents
A kind of electrically conducting coating Download PDFInfo
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- CN102977742B CN102977742B CN201210556682.5A CN201210556682A CN102977742B CN 102977742 B CN102977742 B CN 102977742B CN 201210556682 A CN201210556682 A CN 201210556682A CN 102977742 B CN102977742 B CN 102977742B
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- 238000000576 coating method Methods 0.000 title claims abstract description 68
- 239000011248 coating agent Substances 0.000 title claims abstract description 67
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- 229910021389 graphene Inorganic materials 0.000 claims abstract description 83
- 238000007306 functionalization reaction Methods 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 31
- 239000013530 defoamer Substances 0.000 claims abstract description 28
- 239000003822 epoxy resin Substances 0.000 claims abstract description 24
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 24
- 238000009736 wetting Methods 0.000 claims abstract description 22
- 239000002270 dispersing agent Substances 0.000 claims abstract description 20
- 239000002904 solvent Substances 0.000 claims abstract description 19
- 239000011231 conductive filler Substances 0.000 claims abstract description 17
- 239000004593 Epoxy Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- DKPFZGUDAPQIHT-UHFFFAOYSA-N butyl acetate Chemical compound CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 9
- 239000003960 organic solvent Substances 0.000 claims description 9
- 239000010439 graphite Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 239000000839 emulsion Substances 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 6
- 239000006229 carbon black Substances 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- 239000002966 varnish Substances 0.000 claims description 6
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- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000002041 carbon nanotube Substances 0.000 claims description 4
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 4
- 150000001732 carboxylic acid derivatives Chemical group 0.000 claims description 4
- -1 polysiloxane Polymers 0.000 claims description 4
- 150000005846 sugar alcohols Polymers 0.000 claims description 4
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 150000001298 alcohols Chemical class 0.000 claims description 3
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000003575 carbonaceous material Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 3
- 150000002170 ethers Chemical class 0.000 claims description 3
- 150000002576 ketones Chemical class 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002480 mineral oil Substances 0.000 claims description 3
- 235000010446 mineral oil Nutrition 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 claims description 3
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- 238000000197 pyrolysis Methods 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 abstract description 16
- 239000003795 chemical substances by application Substances 0.000 abstract description 10
- 239000000654 additive Substances 0.000 abstract description 4
- 230000000996 additive effect Effects 0.000 abstract description 4
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000004848 polyfunctional curative Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 150000002924 oxiranes Chemical group 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
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- 239000002184 metal Substances 0.000 description 2
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- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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- 239000003973 paint Substances 0.000 description 2
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- 241000282320 Panthera leo Species 0.000 description 1
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- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides a kind of electrically conducting coating, it comprises: the Graphene of 1wt% ~ 8wt%, the functionalization graphene of 0.1w% ~ 1wt%, the epoxy resin of 15wt% ~ 30wt% and solidifying agent, the wetting dispersing agent of 0.2wt% ~ 1.5wt%, the defoamer of 0.1wt% ~ 0.5wt%, the conductive filler material of 0 ~ 30wt%, surplus is solvent; Described functionalization graphene is containing amino functionalization graphene or the functionalization graphene containing sulfydryl.Due in functionalization graphene of the present invention with amino or sulfydryl, it can better be dispersed in system, and amino or sulfydryl can react with the epoxide group in epoxy resin simultaneously, the bonding force of raising coating; On the other hand, Graphene not only has sheet structure and radius-thickness ratio is comparatively large, and under the condition of few additive its plurality of layers arranged in parallel in film, therefore electrically conducting coating has good electroconductibility and tack.
Description
Technical field
The present invention relates to chemical technology field, particularly relate to a kind of electrically conducting coating.
Background technology
Electrically conducting coating refers to and is coated on non-conductive substrate, makes it the class functional paint having conduction current and get rid of accumulate static charge ability.Electrically conducting coating is a kind of tailor-(made) coating, and along with the development of industrial technology and the raising to various electrical performance demands, the range of application of electrically conducting coating is also more and more wide.Electrically conducting coating forms primarily of conductive filler material, resin, thinner and auxiliary agent.Wherein, conductive filler material is generally the metal-powders such as silver, copper, nickel, the non-metal powders such as graphitized carbon black, graphite and oxide compound.The technology of preparing of existing electrically conducting coating is mainly deposited not enough both ways: one is that conductive filler material is not ideal enough, although silver system conductivity is better, and price and easily occur the phenomenon of silver migration; Copper system filler price is low, good conductivity, and effectiveness of shielding is good, but antioxidative stabilizer extreme difference, need to carry out special process; Nickel system carrier performance comparatively copper is stablized, electroconductibility 1 order of magnitude lower than copper system, to high frequency with higher shield effectiveness, but not obvious to low-frequency band shield effectiveness, antioxidative stabilizer is slightly poor; Graphitized carbon black class filler price is extremely cheap, and chemical stability is good, good dispersity, but more than electroconductibility 3 orders of magnitude lower than copper system, be used for greatly the occasion low to conduction needs, in shielding coating, result of use is not very good.
Publication number is that the Chinese patent of CN1730571A discloses a kind of waterborne conductive coating and preparation method thereof, and the electrically conducting coating of this patent is using mixed valence metal oxide as conductive agent, and the resistance of coating rate prepared is 10
0~ 10
2Ω cm, but the addition of metal oxide is 60wt% ~ 75wt%.Publication number is that CN101508855A Chinese patent discloses a kind of watersoluble plumbago electrically-conducting paint and preparation method thereof, and its sticking power is 2 ~ 3 grades, and the volume specific resistance of coating is 0.2 ~ 0.35 Ω cm, and sticking power is poor.And separately using Graphene as the conductive filler material of electrically conducting coating, there is difficult dispersion, slightly poor with resin compatible, wet adhesion neither be desirable especially etc. problem, therefore developing one conducts electricity very well, and the electrically conducting coating of sticking power excellence is significant.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of electroconductibility and the good electrically conducting coating of sticking power.
In view of this, the invention provides a kind of electrically conducting coating, comprising:
Graphene 1wt% ~ 8wt%;
Functionalization graphene 0.1w% ~ 1wt%;
Epoxy resin and solidifying agent 15wt% ~ 30wt% thereof;
Wetting dispersing agent 0.2wt% ~ 1.5wt%;
Defoamer 0.1wt% ~ 0.5wt%;
Conductive filler material 0 ~ 30wt%;
Surplus is solvent;
Described functionalization graphene is containing amino functionalization graphene or the functionalization graphene containing sulfydryl.
Preferably, described is amination Graphene containing amino functionalization graphene.
Preferably, the described functionalization graphene containing sulfydryl is sulfhydrylation Graphene.
Preferably, described epoxy resin is aqueous epoxy emulsion or solvent epoxy varnish.
Preferably, described conductive filler material is one or more in the conductive carbon material of graphite, expanded graphite, decolorizing carbon, carbon fiber, carbon nanotube, gac, graphitized carbon black and organic matter pyrolysis generation.
Preferably, described wetting dispersing agent is carboxylic acid polyalcohol or acrylic ester polymer.
Preferably, described defoamer is one or more in mineral oil, polysiloxane polyether copolymer, polyether compound and modified organic silicon mixture.
Preferably, described solvent is water or organic solvent.
Preferably, described water is deionized water; Described organic solvent is ketone, ester class, ethers, alcohols, alkanes, as one or more in acetone, butanone, pimelinketone, butyl glycol ether, pentane, hexane, octane, ethylene glycol ether, N-BUTYL ACETATE and vinyl acetic monomer.
The invention provides a kind of electrically conducting coating, it comprises: the Graphene of 1wt% ~ 8wt%, the functionalization graphene of 0.1w% ~ 1wt%, the epoxy resin of 15wt% ~ 30wt% and solidifying agent thereof, the wetting dispersing agent of 0.2wt% ~ 1.5wt%, the defoamer of 0.1wt% ~ 0.5wt%, the conductive filler material of 0 ~ 30wt%, surplus is solvent; Described functionalization graphene is containing amino functionalization graphene or the functionalization graphene containing sulfydryl.Compared with prior art, due in functionalization graphene of the present invention with amino or sulfydryl, it can better be dispersed in system, and amino or sulfydryl can react with the epoxide group in epoxy resin simultaneously, the bonding force of raising coating; On the other hand, Graphene not only has sheet structure and radius-thickness ratio is comparatively large, contacts the contact that instead of conductive filler material point and point in the past between conducting particles with face with face, and under the condition of few additive its plurality of layers arranged in parallel in film.Therefore, owing to containing functionalization graphene and Graphene in electrically conducting coating, thus electrically conducting coating is made to have good electroconductibility and tack.
Embodiment
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these describe just for further illustrating the features and advantages of the present invention, instead of limiting to the claimed invention.
The embodiment of the invention discloses a kind of electrically conducting coating, comprising:
Graphene 1wt% ~ 8wt%;
Functionalization graphene 0.1w% ~ 1wt%;
Epoxy resin and solidifying agent 15wt% ~ 30wt% thereof;
Wetting dispersing agent 0.2wt% ~ 1.5wt%;
Defoamer 0.1wt% ~ 0.5wt%;
Conductive filler material 0 ~ 30wt%;
Surplus is solvent;
Described functionalization graphene is containing amino functionalization graphene or the functionalization graphene containing sulfydryl.
The invention provides a kind of electrically conducting coating, if solvent is water, then electrically conducting coating is waterborne conductive coating; If solvent is organic solvent, then described electrically conducting coating is solvent-borne type electrically conducting coating.The present invention with the addition of functionalization graphene in electrically conducting coating, and described functionalization graphene is containing amino functionalization graphene or the functionalization graphene containing sulfydryl.Owing to containing amino or sulfydryl in described functionalization graphene, it can react with the epoxide group in epoxy resin, thus improves the sticking power of conductive coating; On the other hand, due to the sheet structure of Graphene uniqueness, its radius-thickness ratio is comparatively large, contacts the way of contact that instead of conventional conductive filler point raindrop between conducting particles with face with face, and the plurality of layers arranged in parallel of smearing under the condition of few additive, thus electrically conducting coating is made to have good electroconductibility; Above-mentioned two kinds of components coordinate jointly with other components, thus make electrically conducting coating have good electroconductibility and tack.
According to the present invention, described functionalization graphene is containing amino Graphene or the Graphene containing sulfydryl; The described Graphene containing amino is preferably amination Graphene, and the described Graphene containing sulfydryl is preferably sulfhydrylation Graphene.Described functionalization graphene is with amino or sulfydryl, and it at normal temperatures crosslinking reaction can occur with epoxy resin, forms three-dimensional network, makes coating binding force stronger, improves the sticking power of coating; Meanwhile, functionalization graphene and Graphene can produce π-π effect, improve the dispersing property of Graphene.The conductive coating of the functionalization graphene that the present invention adds is compared with the conductive coating of un-added functionalization graphene, and sticking power is increased to 0 grade by 2 grades, and electroconductibility is also below 10 ohm.Described amination Graphene, sulfhydrylation Graphene preferably adopt lucky storehouse nanometer or Nanjing Xian Feng nanosecond science and technology company limited to produce.The content of described functionalization graphene is 0.1wt% ~ 1wt%, is preferably 0.3 ~ 0.8wt%.
Graphene is a kind of individual layer sheet structure be made up of carbon atom, described Graphene not only has sheet structure and radius-thickness ratio is larger, to contact the point and point cantact that instead of in the past with face with face between conducting particles, thus reduce the addition of Graphene, and Graphene can plurality of layers arranged in parallel in film under lower addition, thus electrically conducting coating is made to have good conductivity and excellent sticking power.The content of described Graphene is 1wt% ~ 8wt%, is preferably 3wt% ~ 5wt%.
Described epoxy resin is preferably aqueous epoxy emulsion or solvent epoxy varnish.If electrically conducting coating is waterborne conductive coating, epoxy resin preferably adopts aqueous epoxy emulsion, and described aqueous epoxy emulsion has larger cross-linking density, and chemical resistance is good, good mechanical stability.Described aqueous epoxy emulsion more preferably adopts BH653 epoxy resin and the BH520 solidifying agent thereof of Dongguan unexpected rival's Chemical Manufacture, the GEM02 aqueous epoxy emulsion of upper sea green good water-borne coatings company limited and solidifying agent LJ810.If electrically conducting coating is solvent epoxy varnish, described epoxy resin preferably adopts solvent epoxy varnish, E-44, E-42 epoxy resin that solvent epoxy varnish more preferably adopts Yueyang Ba Ling petrochemical industry company limited to produce and CYDHD-593 solidifying agent thereof.The content of described epoxy resin and solidifying agent is 15wt% ~ 30wt%, is preferably 20wt% ~ 25wt%.
In order to improve the electroconductibility of conductive coating, the present invention also added other conductive filler material, described conductive filler material be preferably graphite, expanded graphite, decolorizing carbon, carbon fiber, carbon nanotube, gac, graphitized carbon black and organic matter pyrolysis produce conductive carbon material in one or more.The content of described conductive filler material is 0 ~ 30wt%, is preferably 10wt% ~ 20wt%.
Described wetting dispersing agent can be divided into water-based wetting dispersing agent and solvent-borne type wetting dispersing agent equally.Described water-based wetting dispersing agent is preferably block macromolecular multipolymer, metal carboxylate polymkeric substance or synthesis polymer base polymer, and described solvent-borne type wetting dispersing agent is preferably carboxylic acid polyalcohol or acrylic ester polymer.The content of described wetting dispersing agent is 0.2wt% ~ 1.5wt%, is preferably 0.5wt% ~ 1.2wt%.The Hydropalat3275 that described block macromolecular multipolymer more preferably adopts Shenzhen Hai Chuan Chemical Co., Ltd. to produce; Disperbyk180, Disperbyk190 that BYK chemical company of Germany produces; The Orotan731A that the SN-5027 that described metal carboxylate polymkeric substance more preferably adopts Shenzhen Hai Chuan Chemical Co., Ltd. to produce, Rhom and Hass of the U.S. produce; DP512, DP518 that described synthesis polymer base polymer more preferably adopts De Qian company to produce; Orotan1124, Orotan1288 that Rhom and Hass of the U.S. produces; The carboxylic acid polyalcohol BYK-P104S that above-mentioned solvent-borne type wetting and dispersing more preferably adopts BYK chemical company to produce, acrylic ester polymer Disperbyk-2070, the TEGO-670 that German TEGO company produces.
Described defoamer is indispensable component in electrically conducting coating, and it is that one has comparatively low surface tension and high surfaces activity, can suppress or eliminate the material of foam in liquid.Described defoamer be preferably in mineral oil, polysiloxane polyether copolymer, polyethers and modified organic silicon one or more.Foamex8050 defoamer, Foamex902W defoamer that the defoamer of waterborne conductive coating is produced by TEGO company, the modest chemical production of moral DefomW-0505 defoamer, DefomW-092 defoamer, BYK-019 defoamer, BYK-025 defoamer that BYK company produces all can be used for the present invention; BYK-065 defoamer, BYK-066N defoamer that solvent-borne type defoamer is preferably produced by BYK company, the TEGO-940 defoamer that TEGO company produces, the EFKA-2022 defoamer that EFKA company produces.The content of described defoamer is 0.1wt% ~ 0.5wt%, is preferably 0.2wt% ~ 0.4wt%.
The present invention's solvent used is divided into water or organic solvent, if solvent is water, when electrically conducting coating is waterborne conductive coating; If solvent is organic solvent, then described in, then electrically conducting coating is solvent-borne type electrically conducting coating.Described water is preferably domestic water or deionized water, described organic solvent is preferably ketone, ester class, ethers, alcohols, alkanes, as one or more in acetone, butanone, pimelinketone, butyl glycol ether, pentane, hexane, octane, ethylene glycol ether, N-BUTYL ACETATE and vinyl acetic monomer.
The preparation method of described electrically conducting coating, the present invention has no particular limits, and is preparation method well known to those skilled in the art.In order to make electrically conducting coating of the present invention have good performance, the preparation method of described electrically conducting coating is preferably prepared as follows:
Solvent, wetting dispersing agent are mixed with defoamer, after stirring, obtains the first mixed solution; Graphene, functionalization graphene are mixed with described first mixing solutions, sand milling after stirring, obtains material; Mix after described material stirring with epoxy curing agent, obtain component A; Epoxy resin is mixed with component A, namely obtains electrically conducting coating.
The invention provides a kind of electrically conducting coating, it comprises: the Graphene of 1wt% ~ 8wt%, the functionalization graphene of 0.1w% ~ 1wt%, the epoxy resin of 15wt% ~ 30wt% and solidifying agent, the wetting dispersing agent of 0.2wt% ~ 1.5wt%, the defoamer of 0.1wt% ~ 0.5wt%, the conductive filler material of 0 ~ 30wt%, surplus is solvent; Described functionalization graphene is containing amino functionalization graphene or the functionalization graphene containing sulfydryl.Compared with prior art, due in functionalization graphene of the present invention with amino or sulfydryl, it can better be dispersed in system, and amino or sulfydryl can react with the epoxide group in epoxy resin simultaneously, the bonding force of raising coating; On the other hand, Graphene not only has sheet structure and radius-thickness ratio is comparatively large, contacts the contact that instead of conductive filler material point and point in the past between conducting particles with face with face, and under the condition of few additive its plurality of layers arranged in parallel in film.Therefore, owing to containing functionalization graphene and Graphene in electrically conducting coating, thus electrically conducting coating is made to have good electroconductibility and tack.
In order to understand the present invention further, be described in detail to electrically conducting coating provided by the invention below in conjunction with embodiment, protection scope of the present invention is not limited by the following examples.
Graphene in embodiment is the Graphene produced by Ningbo Mo Xi Science and Technology Ltd..
Embodiment 1
1) under the rotating speed of 400r/min, add the tap water of 62.5 weight parts successively, BYK-190 wetting dispersing agent 0.15 weight part that BYK company produces, Hydropalat3275 wetting dispersing agent 0.15 weight part that Shenzhen Hai Chuan Chemical Co., Ltd. produces, Foamex825W defoamer 0.2 weight part that TEGO company produces, stirs 5min;
2) by speed adjustment 2500r/min, in the solution that step 1) obtains, slowly add amination Graphene 1 weight part that the Graphene of 6 weight parts and Ji Cang nanometer company produce, after stirring, place sand milling 60min on sand mill;
3) material that sand milling is good is moved to homogenizer, and rotating speed is adjusted to 600r/min, add BH520 epoxy hardener 10 weight part of Dongguan unexpected rival's Chemical Manufacture, obtain component A;
B component is the BH653 epoxy resin of 20 weight parts of Dongguan unexpected rival's Chemical Manufacture;
During use, after component A and B component mix; Then be sprayed on ABS plastic base material.Film performance detected result is as shown in table 1.
Embodiment 2
1) under the rotating speed of 400r/min, add 63.4 parts, tap water successively, BYK-190 wetting dispersing agent 0.15 weight part that BYK company produces, Hydropalat3275 wetting dispersing agent 0.15 weight part that Shenzhen Hai Chuan Chemical Co., Ltd. produces, Foamex825W defoamer 0.2 weight part that TEGO company produces, stirs 5min;
2) by speed adjustment 2500r/min, in the solution that step 1) obtains, slowly add Graphene 6 weight part, amination Graphene 0.1 weight part that Ji Cang nanometer company produces, after stirring, place sand milling 60min on sand mill;
3) material that sand milling is good is moved to homogenizer, and rotating speed is adjusted to 600r/min, add BH520 epoxy hardener 10 weight part of Dongguan unexpected rival's Chemical Manufacture, obtain component A.
B component is BH653 epoxy resin 20 weight part of Dongguan unexpected rival's Chemical Manufacture.
During use, after component A and B component mix, be then sprayed on ABS plastic base material.Film performance detected result is as shown in table 1.
Embodiment 3
1) under the rotating speed of 400r/min, add 48 parts, tap water successively, DP512 wetting and dispersing 0.5 weight part that De Qian company produces, DefomW-0505 defoamer 0.1 weight part, stir 5min;
2) by speed adjustment 2500r/min, in the solution of step 1), slowly add Graphene 1 weight part, amination Graphene 0.4 weight part of Ji Cang nanometer company production and Ketjen black carbon black 20 weight part of Japanese LION company production, after stirring, place sand milling 60min on sand mill;
3) material that sand milling is good is moved to homogenizer, and rotating speed is adjusted to 600r/min, add BH520 epoxy hardener 10 weight part of Dongguan unexpected rival's Chemical Manufacture, obtain component A.
B component is BH653 epoxy resin 20 weight part of Dongguan unexpected rival's Chemical Manufacture.
During use, after component A and B component mix, be then sprayed on ABS plastic base material.Film performance detected result is as shown in table 1.
Embodiment 4
1) under the rotating speed of 400r/min, add N-BUTYL ACETATE 63 weight part successively, Disperbyk-2070 wetting dispersing agent 1.5 weight part that BYK company produces, BYK-066N defoamer 0.5 weight part that BYK company produces, stir 5min;
2) by speed adjustment 2500r/min, Graphene 2 weight part is slowly added in the solution of step 1), sulfhydrylation Graphene 0.5 weight part that Nanjing Xian Feng Nono-material Science & Technology Ltd. produces and carbon nanotube 10 weight part that Beijing Tiannai Science and Technology Co., Ltd produces, ultrasonic 15min;
3) ultrasonic good material is moved to homogenizer, and rotating speed is adjusted to 600r/min, add CYDHD-593 epoxy hardener 7.5 weight part that Yueyang Ba Ling petrochemical industry company limited produces, obtain component A.
B component is E-44 epoxy resin 15 weight part that Yueyang Ba Ling petrochemical industry company limited produces.
During use, after component A and B component mix, be then sprayed on ABS plastic base material.Film performance detected result is as shown in table 1.
Embodiment 5
1) under the rotating speed of 400r/min, add N-BUTYL ACETATE 75 weight part successively, Disperbyk-2070 wetting dispersing agent 0.5 weight part that BYK company produces, BYK-066N defoamer 0.5 weight part that BYK company produces, stir 5min;
2) by speed adjustment 2500r/min, in the solution that step 1) obtains, slowly add Graphene 8 weight part, sulfhydrylation Graphene 1 weight part that Nanjing Xian Feng Nono-material Science & Technology Ltd. produces, after stirring, place sand milling 60min on sand mill;
3) material that sand milling is good is moved to homogenizer, and rotating speed is adjusted to 600r/min, add CYDHD-593 epoxy hardener 5 weight part that Yueyang Ba Ling petrochemical industry company limited produces, obtain component A;
B component is Yueyang Ba Ling petrochemical industry company limited E-44 epoxy resin 10 weight part.
During use, after component A and B component mix.Then be sprayed on ABS plastic base material.Film performance detected result is as shown in table 1.
The performance detection data table of electrically conducting coating prepared by table 1 embodiment
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. an electrically conducting coating, comprising:
Described functionalization graphene is sulfhydrylation Graphene;
Described conductive filler material be graphite, expanded graphite, decolorizing carbon, carbon fiber, carbon nanotube, gac, graphitized carbon black and organic matter pyrolysis produce conductive carbon material in one or more.
2. electrically conducting coating according to claim 1, is characterized in that, described epoxy resin is aqueous epoxy emulsion or solvent epoxy varnish.
3. electrically conducting coating according to claim 1, is characterized in that, described wetting dispersing agent is carboxylic acid polyalcohol or acrylic ester polymer.
4. electrically conducting coating according to claim 1, is characterized in that, described defoamer is one or more in mineral oil, polysiloxane polyether copolymer, polyether compound and modified organic silicon mixture.
5. electrically conducting coating according to claim 1, is characterized in that, described solvent is water or organic solvent.
6. electrically conducting coating according to claim 5, is characterized in that, described water is deionized water; Described organic solvent is one or more in ketone, ester class, ethers, alcohols, alkanes.
7. electrically conducting coating according to claim 6, is characterized in that, described organic solvent is one or more in acetone, butanone, pimelinketone, butyl glycol ether, pentane, hexane, octane, ethylene glycol ether, N-BUTYL ACETATE and vinyl acetic monomer.
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