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Graphene radiating material and preparation method thereof

A technology of heat-dissipating coatings and graphene, applied in anti-corrosion coatings, anti-fouling/underwater coatings, coatings, etc., can solve problems such as difficulty in industrialization implementation, complex heat-dissipating coating process, and poor mixing of heat-conducting materials to achieve broad application Field and scope of application, improvement of longitudinal thermal conductivity, effect of super-adhesion to substrate

Inactive Publication Date: 2016-12-14
DEYANG CARBONENE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among these heat-dissipating coatings, some of them focus on the heat-conducting effect, often ignoring the characteristic performance of the heat-dissipating coating—the thermal radiation rate; Impact resistance, salt spray resistance and other properties cannot meet commercial requirements
[0003] The prior art with the Chinese patent announcement number "103131274" disclosed a fluororesin heat-dissipating coating and its preparation method on June 5, 2013. Although the method uses carbon nanotubes to improve the problem of poor mixing of heat-conducting materials, it uses electronic Transfer-type organic compounds greatly increase the thermal radiation rate, but ignore the thermal conductivity of the material, which is not conducive to the heat exchange between the radiator substrate and the coating, thereby reducing the heat dissipation effect
[0004] The existing technology with the Chinese patent announcement number "102964972" disclosed a composite enhanced heat dissipation coating containing graphene or graphene oxide and its preparation method on March 13, 2013. The heat dissipation coating prepared by this method has a high infrared emission rate , up to 0.96, but the heat-dissipating coating prepared by this method is complicated in process, with many processes, it is difficult to implement industrialization, and the cost is high

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  • Graphene radiating material and preparation method thereof

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Embodiment 1

[0033] A kind of graphene heat-dissipating coating, comprises A agent and B agent, and the mass ratio of A agent and B agent is 1:1, and wherein, described A agent comprises the following components by mass percentage:

[0034] Fluorocarbon resin 40-60%, mixed solvent 30-50%, graphene 5-15%, leveling agent 0.5-1.5%, dispersant 0.5-1.5%;

[0035] The agent B includes a mixed solvent and a curing agent, and the mass ratio of the mixed solvent to the curing agent is 10:1.

[0036] Wherein, the graphene is composite graphene including ceramic filler and graphene, and the ceramic filler is such as aluminum nitride (AlN), boron nitride (BN), aluminum oxide (Al 2 o 3 ), magnesium oxide (MgO), etc., and the mass ratio of ceramic filler to graphene is 0.1-1:4. The fluorocarbon resin is one or a combination of polytetrafluoroethylene, polytrifluoroethylene, polyvinylidene fluoride, ethylene-tetrafluoroethylene copolymer, and polyvinyl fluoride. The mixed solvent is a mixture of xylen...

Embodiment 2

[0048] A kind of graphene heat-dissipating coating, comprises A agent and B agent, and the mass ratio of A agent and B agent is 1:1, and wherein, described A agent comprises the following components by mass percentage:

[0049] 40 parts of a mixture of polytetrafluoroethylene and polytrifluoroethylene resins in a mass ratio of 1:3, and a mixed solvent of xylene, n-butanol and butyl acetate in a mass ratio of 5:3:2 43 parts part, 15 parts of graphene, 0.5 part of leveling agent, and 1.5 parts of dispersant;

[0050] The agent B includes a mixed solvent and a curing agent, and the mass ratio of the mixed solvent to the curing agent is 10:1.

[0051] Present embodiment also provides a kind of preparation method of graphene heat dissipation coating, comprises the steps:

[0052] (1) Preparation of Agent A

[0053] After preparing the materials according to the above ratio, first place the fluorocarbon resin, mixed solvent, graphene, leveling agent and dispersant in the ball mill j...

Embodiment 3

[0059] A kind of graphene heat-dissipating coating, comprises A agent and B agent, and the mass ratio of A agent and B agent is 1:1, and wherein, described A agent comprises the following components by mass percentage:

[0060] 40 parts of a mixture of polytrifluoroethylene and polyvinylidene fluoride in a mass ratio of 1:3, and 50 parts of a mixed solvent of xylene, isobutanol and butyl acetate in a mass ratio of 5:3:2 part, 9 parts of graphene, 0.5 part of leveling agent, 0.5 part of dispersant;

[0061] The agent B includes a mixed solvent and a curing agent, and the mass ratio of the mixed solvent to the curing agent is 10:1.

[0062] Present embodiment also provides a kind of preparation method of graphene heat dissipation coating, comprises the steps:

[0063] (1) Preparation of Agent A

[0064] After preparing the materials according to the above ratio, put the fluorocarbon resin, mixed solvent, graphene, leveling agent and dispersant in the ball mill tank, mix the ma...

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Abstract

The invention discloses graphene radiating material and a preparation method thereof. The graphene radiating material comprises agent A and agent B mixed well at a mass ratio of 1:1, the agent A comprises the following components, by weight: 40-60% of fluorocarbon resin, 30-50% of a mixed solvent, 5-15% of graphene, 0.5-1.5% of a leveling agent, and a 0.5-1.5% of a dispersant; the agent B comprises a mixed solvent and a curing agent at a mass ratio of 10:1. The prepared coating has the advantages such as high thermal conductivity coefficient, high thermal radiation coefficient, god radiating effect, acid and alkali tolerance, salt spray tolerance, impact resistance and high matrix adhesion, and the radiating material is widely applicable and usable.

Description

technical field [0001] The invention relates to the field of heat dissipation coatings, in particular to a graphene heat dissipation coating and a preparation method thereof. Background technique [0002] At present, the heat-dissipating fillers commonly used in heat-dissipating coatings mainly include aluminum nitride, silicon nitride, aluminum oxide, silicon carbide, zinc oxide, graphite, carbon nanotubes, graphene oxide, etc. Among these heat-dissipating coatings, some of them focus on the heat-conducting effect, often ignoring the characteristic performance of the heat-dissipating coating—the thermal radiation rate; Impact resistance, salt spray resistance and other properties cannot meet commercial requirements. [0003] The prior art with the Chinese patent announcement number "103131274" disclosed a fluororesin heat-dissipating coating and its preparation method on June 5, 2013. Although the method uses carbon nanotubes to improve the problem of poor mixing of heat-c...

Claims

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Application Information

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IPC IPC(8): C09D127/18C09D127/12C09D127/16C09D123/08C09D127/14C09D5/08C09D5/16C09D7/12C09D7/00
CPCC09D127/12C08K3/04C08K7/00C08L2205/02C09D5/08C09D5/16C09D7/20C09D7/61C09D7/70C09D123/0892C09D127/14C09D127/16C09D127/18C08L27/18C08K13/04C08K2003/282C08K2003/385C08K2003/2227C08K2003/222C08L27/12C08L27/14C08L23/0892
Inventor 尹天平姚林彭辉高华
Owner DEYANG CARBONENE TECH
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