CN103627223A - Novel graphene heat-conducting coating and preparation method thereof - Google Patents
Novel graphene heat-conducting coating and preparation method thereof Download PDFInfo
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- CN103627223A CN103627223A CN201310251619.5A CN201310251619A CN103627223A CN 103627223 A CN103627223 A CN 103627223A CN 201310251619 A CN201310251619 A CN 201310251619A CN 103627223 A CN103627223 A CN 103627223A
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- graphite alkene
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Abstract
The invention relates to the technical field of coatings, specifically to a novel graphene heat-conducting coating and a preparation method thereof. The novel graphene heat-conducting coating is prepared through modification of graphene and nanometer diamond in a weight ratio of 1-10: 1, wherein the total addition amount of graphene and nanometer diamond accounts for 0.1 to 5% of the total amount of the novel graphene heat-conducting coating. Compared with the prior art, the novel graphene heat-conducting coating has the advantages of good thermal conductivity, good film forming strength, high bonding strength on a substrate, good wear resistance and microhardness, excellent corrosion stability, resistance to both chemicals and high temperature, fast curing, rust protection and ultraviolet resistance.
Description
Technical field
The present invention relates to technical field of coatings, be specifically related to a kind of novel graphite alkene heat-conductive coating and preparation method thereof and preparation method thereof.
Background technology
Coating is that the construction technology that a kind of use is different is coated in article surface, form to adhere to firmly, has some strength, continuous solid film.The film common name forming is like this filmed, and claims again paint film or coating." coating has defencive function, decoration functions and other basic functions.Along with the development in epoch, also more and more higher to the requirement of coating.Along with the pay attention to day by day to environmental problem and energy problem in global range, traditional coating cannot meet real demand, and environmental friendliness coating and multifunction energy-saving coating are the directions that development is made great efforts in current countries in the world.
Existing nearly all equipment all can produce heat, and the accumulation of heat can make the temperature of equipment raise and then affect the normal use of equipment, and for protection equipment, these equipment are all furnished with radiator portion.For the radiating effect of strong radiator, be mainly to change the geometrical shape of scatterer, the modes such as fluidised form of the material of scatterer, fluid at present.But the cost of these methods and freight charges are very high, application has been subject to certain restriction.The appearance of enhance heat coating, has pushed a new field to heat dissipation technology.The most radiating effect of existing coating is bad, can not as early as possible the surface of the article such as equipment be gone out to reach cooling object by dissipation of heat, and the good heat radiation coating that dispels the heat exists the problem lower with substrate combinating strength, work-ing life is lower, therefore, how to provide rapidly and efficiently a kind of and good heat radiation coating of life-span is very urgent.
Application number is 201210388775.1, the applying date is 2012-10-15, the patent of invention of a kind of metallic paint by name and preparation method thereof discloses a kind of coating, and it is made by following raw materials in part by weight: dodecenylsuccinic acid 180-190, propylene glycol 130-135, glycidyl methacrylate 210-215, Octyl acrylate 360-365, methyl propanediol 430-435, resol 105-108, vinylbenzene 85-90, quadrol 100-110, titanium dioxide 300-310, modification infusorial earth 20-30, formic acid 7-8, water 100-105, sodium isethionate 14-16.Formula material is mixed, and high speed dispersion, grinds to form nano level metal coating.This coating does not have good heat conductivility.
Summary of the invention
The object of the invention is not have in order to overcome current coating major part the problem that bonding properties is poor, work-ing life is lower of heat conductivility and coating and matrix, a kind of novel graphite alkene heat-conductive coating and preparation method thereof is provided.By the modification of Graphene, improved greatly the thermal conductivity of coating, and better with the combination effect of matrix after coating film forming.
Another object of the present invention is to provide a kind of preparation method of novel graphite alkene heat-conductive coating.
In order to reach foregoing invention object, the present invention by the following technical solutions:
A kind of novel graphite alkene heat-conductive coating, adopt Graphene and Nano diamond modification to be prepared from, the weight ratio of described Graphene and Nano diamond is 1-10:1, and the per-cent that adds total amount to account for novel graphite alkene heat-conductive coating total amount of Graphene and Nano diamond is 0.1-5%.
The structure of Graphene is highly stable, connection between the carbon atom of Graphene inside is very pliable and tough, when applying external force in Graphene, carbon atom face meeting flexural deformation, makes carbon atom needn't rearrange to adapt to external force, and this stable crystalline network makes Graphene on the basis of proof strength, have extraordinary snappiness, make coating after film forming under the effect that is subject to external force, be difficult for occurring damaged and break, in addition, this stable crystalline network also makes Graphene have outstanding thermal conductivity.The present invention utilizes the advantage of Graphene, improved after coating film forming planar strength, thermal conductivity and electroconductibility, thereby as soon as possible heat transmitted and distribute, reach heat radiation by temperature object.The premium properties of Graphene, also can improve coating at the sticking power of matrix surface, increases cohesive strength, has not only reduced the pre-treatment work to matrix, and has improved the work-ing life after coating film forming.Nano diamond is not only retaining adamantine comprehensive excellent specific property, and also has harmless good bio-compatibility; Radar wave, infrared and ultraviolet light are had to huge transmissivity and specific absorption, excellent cold cathode field emission effect, there are the functional groups such as many carboxyls, alkyl, carbonyl on surface, is easy to same metal, rubber, plastic polymer, fabric face and combines closely.Meanwhile, by add Nano diamond in coating, the wear resistance of coating and microhardness are greatly improved, the corrosion stability of coating has also obtained effective raising.
The addition of Graphene and Nano diamond has determined the film forming weight of coating, when the addition of Graphene and Nano diamond is less than 0.1%, and DeGrain, when addition is greater than 5%, larger to the film forming negative impact of coating, reduced thin film strength.The approrpiate wts ratio of Graphene and Nano diamond, film-forming properties, corrosion stability, intensity and other performances that can balance film, unaccommodated weight ratio, can cause that the partial properties of film is too high causes the wasting of resources.
As preferably, described novel graphite alkene heat-conductive coating is counted by weight, also comprises following component: silicon sol 20-50 part and inorganic silicate 5-20 part.Silicon sol and inorganic silicate be as the carrier of Graphene and Nano diamond, and play filming function.
As preferably, described novel graphite alkene heat-conductive coating is counted by weight, also comprises following component: bisphenol A-type novolac epoxy 20-50 part, polyaniline 10-50 part, terpolycyantoamino-formaldehyde resin 1-5 part, epoxy acrylate 5-20 part.
Bisphenol A-type novolac epoxy has good mechanical property, high chemical resistance and superior resistance to elevated temperatures after solidifying, in application, reach higher Tg and high bond strength, with respect to traditional linear phenolic epoxy resin (PNE) and o-cresol formaldehyde epoxy resin (CNE), it has quite or even better resistance to elevated temperatures, simultaneously because existence-C in molecular structure (CH3) 2-has better toughness.The combination of polyaniline and bisphenol A-type novolac epoxy and epoxy acrylate can be played good rust inhibition, polyaniline serves as catalyzer, first from metal, draw electronics, then it is passed in oxygen, to disturb metal oxygen to change into this chemical reaction of rust, and form one deck pure-oxide to stop corrosion.Melamine resin can improve the elctrical stability of conductive polymers of the present invention, contributes to strengthen the water tolerance of film of the present invention.Epocryl has the good characteristic of epoxy resin, but solidified nature and formability aspect are more outstanding, more simple and quick than epoxy resin cure.
As preferably, described novel graphite alkene heat-conductive coating also comprises steel fiber 1-5 part.Steel fiber improves electroconductibility and the intensity after coating film forming.
As preferably, described steel fiber is copper fiber.
As preferably, the per-cent that adds total amount to account for novel graphite alkene heat-conductive coating total amount of described Graphene and Nano diamond is 1.5-5%.
As preferably, the particle diameter of described Nano diamond is 20-200nm.The particle diameter of Nano diamond is crossed the film forming that conference affects coating, and the too small meeting of particle diameter causes cost to increase.Suitable particle diameter can be better and superpolymer merge.
As preferably, described novel graphite alkene heat-conductive coating also comprises dispersion agent 0.1-1 part, flow agent 0.1-2 part, defoamer 0.1-2 part.
A preparation method for novel graphite alkene heat-conductive coating, mixes each component according to proportioning ultrasonic agitation.
Compared with prior art, beneficial effect is in the present invention: 1 good thermal conductivity, and 2 become preferably film toughnesss, 3 bonding strengths higher with matrix, 4 good wear resistance and microhardnesses, 5 corrosion stabilities are good, 6 chemical resistances, 7 resistances to elevated temperatures, 8 solidify fast, 9 antirust and uvioresistants.
Embodiment
Below by specific embodiment, technical scheme of the present invention is further described to explanation.
If without specified otherwise, the raw material adopting in embodiments of the invention is the conventional raw material in this area, and the method adopting in embodiment is the ordinary method of this area.
Embodiment 1:
A kind of novel graphite alkene heat-conductive coating, adopting Graphene and particle diameter is that the modification of 20nm Nano diamond is prepared from, the weight ratio of Graphene and Nano diamond is 5:1, and the per-cent that adds total amount to account for novel graphite alkene heat-conductive coating total amount of Graphene and Nano diamond is 5%.The per-cent that other each components account for novel graphite alkene heat-conductive coating total amount is 95%, and other each components proportioning is by weight: 20 parts of silicon sol, 20 parts of inorganic silicates, 1 part of copper fiber, 1 part of dispersion agent, 0.1 part of flow agent, 2 parts of defoamers.Each component is mixed according to proportioning ultrasonic agitation.
Embodiment 2:
A kind of novel graphite alkene heat-conductive coating, adopting Graphene and particle diameter is that the modification of 200nm Nano diamond is prepared from, the weight ratio of Graphene and Nano diamond is 1:1, and the per-cent that adds total amount to account for novel graphite alkene heat-conductive coating total amount of Graphene and Nano diamond is 1.5%.The per-cent that other each components account for novel graphite alkene heat-conductive coating total amount is 98.5%, and other each components proportioning is by weight: 50 parts of silicon sol, 5 parts of inorganic silicates, 5 parts of copper fibers, 0.1 part of dispersion agent, 2 parts of flow agents, 0.1 part of defoamer.Each component is mixed according to proportioning ultrasonic agitation.
Embodiment 3:
A kind of novel graphite alkene heat-conductive coating, adopting Graphene and particle diameter is that the modification of 20nm Nano diamond is prepared from, the weight ratio of Graphene and Nano diamond is 6:1, and the per-cent that adds total amount to account for novel graphite alkene heat-conductive coating total amount of Graphene and Nano diamond is 5%.The per-cent that other each components account for novel graphite alkene heat-conductive coating total amount is 95%, and other each components proportioning is by weight: 20 parts of bisphenol A-type novolac epoxys, 30 parts of polyanilines, 5 parts of terpolycyantoamino-formaldehyde resins, 5 parts of epoxy acrylates, 3 parts of copper fibers, 1 part of dispersion agent, 0.1 part of flow agent, 1 part of defoamer.Each component is mixed according to proportioning ultrasonic agitation.
Embodiment 4:
A kind of novel graphite alkene heat-conductive coating, adopting Graphene and particle diameter is that the modification of 100nm Nano diamond is prepared from, the weight ratio of Graphene and Nano diamond is 10:1, and the per-cent that adds total amount to account for novel graphite alkene heat-conductive coating total amount of Graphene and Nano diamond is 0.1%.The per-cent that other each components account for novel graphite alkene heat-conductive coating total amount is 99.9%, and other each components proportioning is by weight: 30 parts of bisphenol A-type novolac epoxys, 50 parts of polyanilines, 1 part of terpolycyantoamino-formaldehyde resin, 10 parts of epoxy acrylates, 5 parts of copper fibers, 0.1 part of dispersion agent, 0.8 part of flow agent, 2 parts of defoamers.Each component is mixed according to proportioning ultrasonic agitation.
Embodiment 5:
A kind of novel graphite alkene heat-conductive coating, adopting Graphene and particle diameter is that the modification of 200nm Nano diamond is prepared from, the weight ratio of Graphene and Nano diamond is 1:1, and the per-cent that adds total amount to account for novel graphite alkene heat-conductive coating total amount of Graphene and Nano diamond is 1.5%.The per-cent that other each components account for novel graphite alkene heat-conductive coating total amount is 98.5%, and other each components proportioning is by weight: 50 parts of bisphenol A-type novolac epoxys, 10 parts of polyanilines, 3 parts of terpolycyantoamino-formaldehyde resins, 20 parts of epoxy acrylates, 1 part of copper fiber, 0.5 part of dispersion agent, 2 parts of flow agents, 0.1 part of defoamer.Each component is mixed according to proportioning ultrasonic agitation.
The effect of each embodiment sees the following form:
Known by upper table, coating property indices of the present invention is good, has good thermal conductivity, sticking power and uviolresistance, and moulding property is good, quick solidifying, and hardness is higher.
Claims (9)
1. a novel graphite alkene heat-conductive coating, it is characterized in that, adopt Graphene and Nano diamond modification to be prepared from, the weight ratio of described Graphene and Nano diamond is 1-10:1, and the per-cent that adds total amount to account for novel graphite alkene heat-conductive coating total amount of Graphene and Nano diamond is 0.1-5%.
2. novel graphite alkene heat-conductive coating according to claim 1, is characterized in that, described novel graphite alkene heat-conductive coating is counted by weight, also comprises following component: silicon sol 20-50 part and inorganic silicate 5-20 part.
3. novel graphite alkene heat-conductive coating according to claim 1, it is characterized in that, described novel graphite alkene heat-conductive coating is counted by weight, also comprises following component: bisphenol A-type novolac epoxy 20-50 part, polyaniline 10-50 part, terpolycyantoamino-formaldehyde resin 1-5 part, epoxy acrylate 5-20 part.
4. novel graphite alkene heat-conductive coating according to claim 2, is characterized in that, described novel graphite alkene heat-conductive coating also comprises steel fiber 1-5 part.
5. novel graphite alkene heat-conductive coating according to claim 3, is characterized in that, described steel fiber is copper fiber.
6. according to the novel graphite alkene heat-conductive coating described in claim 1 or 2 or 3 or 4, it is characterized in that, the per-cent that adds total amount to account for novel graphite alkene heat-conductive coating total amount of described Graphene and Nano diamond is 1.5-5%.
7. according to the novel graphite alkene heat-conductive coating described in claim 1 or 2 or 3 or 4, it is characterized in that, the particle diameter of described Nano diamond is 20-200nm.
8. according to the novel graphite alkene heat-conductive coating described in claim 3 or 4, it is characterized in that, described novel graphite alkene heat-conductive coating also comprises dispersion agent 0.1-1 part, flow agent 0.1-2 part, defoamer 0.1-2 part.
9. according to a preparation method for the novel graphite alkene heat-conductive coating according to described in claim 1 or 2 or 3 or 4, it is characterized in that, each component is mixed according to proportioning ultrasonic agitation.
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| CN105778136A (en) * | 2014-12-24 | 2016-07-20 | 中国科学院宁波材料技术与工程研究所 | Graphene composite pasting film |
| CN106366710A (en) * | 2016-09-12 | 2017-02-01 | 中国航空工业集团公司北京航空材料研究院 | Graphene heat-conducting anticorrosive water-based paint, and preparation and application methods thereof |
| CN106752645A (en) * | 2016-12-12 | 2017-05-31 | 墨宝股份有限公司 | A kind of Nano diamond heat dissipation, energy conservation environment-friendlythin thin film coating and its preparation application method |
| CN107033634A (en) * | 2016-11-02 | 2017-08-11 | 张俊跃 | Graphene-based coating, preparation method and applications |
| CN107141850A (en) * | 2017-06-30 | 2017-09-08 | 广东美的厨房电器制造有限公司 | A kind of coating of hydrophilic high-antistatic performance and preparation method thereof |
| CN107384148A (en) * | 2017-07-24 | 2017-11-24 | 宁波墨西科技有限公司 | Graphene-based heat radiation coating and preparation method thereof |
| CN109486368A (en) * | 2018-11-28 | 2019-03-19 | 湖南阳光新材料有限公司 | A kind of super abrasive PVC pipeline interlayer coatings |
| CN109929390A (en) * | 2019-04-11 | 2019-06-25 | 浙江传智精密机械有限公司 | A kind of graphene-based coating resistant to high temperature |
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| CN107141850A (en) * | 2017-06-30 | 2017-09-08 | 广东美的厨房电器制造有限公司 | A kind of coating of hydrophilic high-antistatic performance and preparation method thereof |
| CN107384148A (en) * | 2017-07-24 | 2017-11-24 | 宁波墨西科技有限公司 | Graphene-based heat radiation coating and preparation method thereof |
| CN109486368A (en) * | 2018-11-28 | 2019-03-19 | 湖南阳光新材料有限公司 | A kind of super abrasive PVC pipeline interlayer coatings |
| CN109929390A (en) * | 2019-04-11 | 2019-06-25 | 浙江传智精密机械有限公司 | A kind of graphene-based coating resistant to high temperature |
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