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High-efficiency heat-dissipating paint composition using a carbon material

一种散热涂料、组合物的技术，应用在防火涂料、热交换的材料、涂层等方向，能够解决难以实现电传导性等问题

Active Publication Date: 2013-05-08
HANWHA CHEMICAL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a large amount of wastewater generated in the process poses an environmental burden, and there is a technical problem that it is difficult to achieve electrical conductivity because carbon nanotubes are damaged during surface treatment.

Method used

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  • High-efficiency heat-dissipating paint composition using a carbon material
  • High-efficiency heat-dissipating paint composition using a carbon material
  • High-efficiency heat-dissipating paint composition using a carbon material

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0093] Preparation of a dispersion comprising a surface-modified carbon material

[0094] A CNT aqueous solution was prepared in a pretreatment tank by mixing 15 g of carbon nanotubes (CNT) and 985 g of distilled water with a circulation pump. Before the CNT solution is injected into the preheating tank at a flow rate of 30g / min by a high-pressure injection pump, the gaseous oxygen compressed to 252atm is mixed with the CNT solution at a flow rate of 0.8g / min at the front end of the heat exchanger, and the mixed solution is injected into the preheating tank. It is preheated to 200°C in a preheating tank by a heat exchanger. The preheated mixed solution is injected into a surface modification reactor in a critical pressure water state at 210° C. and 250 atm, and then the mixed solution is subjected to surface modification. The surface-modified product was sent back to the heat exchanger, first cooled to 100°C, and then cooled to about 25°C by a cooling device, thereby obtain...

preparation example 2

[0097] Preparation of Heat Resistance Additives

[0098] Heat-resistant additive.

[0099] At this time, the alkali-soluble resin was used by mixing 52.1% by weight of water, 1.9% by weight of ammonia water, and 46% by weight of solids. As the solid, a water-soluble resin based on styrene / acrylic acid (with a weight average molecular weight of 100,000, including 35% by weight of styrene, 32.5% by weight of α-methyl Styrene, 32.5% by weight acrylic acid), 4.2% by weight styrene, 73.3% by weight 2-ethylhexyl acrylate, 1.2% by weight glycidyl methacrylate and A resin obtained by reacting 0.6% ammonium peroxide as an initiator.

preparation example 3

[0101] Preparation of emulsions with enhanced cohesive properties

[0102] A bond with reinforcement was prepared by mixing 54.9% by weight of water, 0.2% by weight of 27% ammonia, 44.9% by weight of an acrylic-based resin (weight average molecular weight: 15,000) as a solid sexual emulsion.

[0103] At this time, the acrylic acid-based resin used as the solid was used by making 49.0% by weight of butyl acrylate, 49.4% by weight of methyl methacrylate, 0.6% by weight of itaconic acid, A resin obtained by reacting 0.6% of a silane coupling agent (aminopropyltrimethoxysilane) and 0.4% by weight of ammonium peroxide as an initiator.

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Abstract

The present invention relates to a heat-dissipating paint composition using a carbon material, wherein the composition comprises a dispersion containing a surface-modified carbon material, a heat-resistant additive, and an emulsion having improved adhesion. The heat-dissipating composition of the present invention exhibits superior heat-dissipating performance, so that the heat-dissipating composition can be used in various industrial fields requiring temperature control.

Description

technical field [0001] The invention relates to a heat-dissipating coating composition utilizing carbon materials. More specifically, the present invention relates to a heat-dissipating paint having excellent heat resistance and dispersibility by including surface-modified carbon nanotubes, a polymer solution for dispersing the carbon nanotubes into a liquid state, and a heat-resistant additive combination. In addition, the present invention may also include emulsions with enhanced adhesion, which are used to further enhance the adhesion to the surface of the substrate. Background technique [0002] Recently, with the high integration and miniaturization of electronic products, heat dissipation has become a very big issue. At present, the method for heat dissipation is usually to manufacture a heat dissipation plate with a maximum surface area by extruding aluminum or copper. If this is not sufficient, blackening (anodizing) the heat dissipation structure to improve heat d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D5/00C09D133/04H05K7/20C09D7/61C09D7/62C09D7/65
CPCH01L23/3737C09D7/1225C08K7/24C09D7/125C08K9/02C08K3/04H05K7/20427C09D7/1291C08K5/544H01L23/373C09D7/12C09D133/04C09D5/00H01L2924/0002C08K3/042C08K3/041C08K3/046C09D7/62C09D7/65C09D7/70C09K5/00C09D7/61H01L2924/00C09D5/18H05K7/20
Inventor 都承会洪成哲李镇瑞韩柱熙
Owner HANWHA CHEMICAL CORPORATION
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