Low-oil-output heat-conducting gel and preparation method thereof

A technology of oil heat conduction and gel, which is applied in the direction of chemical instruments and methods, heat exchange materials, etc., can solve the problems of extrusion rate reduction, affecting production efficiency, affecting the performance of heating elements and radiators, etc., to reduce oil output rate, reducing the effect of exercise

Active Publication Date: 2021-09-28
苏州柯仕达电子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A small amount of oil is normal and does not affect the normal use of the thermal gel, but a large amount of oil is easy to make the leaked oil adsorb on the heating element and radiator, thus affecting the normal use of the heating element and radiator performance
[0004] In view of the above-mentioned related technologies, the inventor believes that although vinyl silicone oil and hydrogen-containing silicone oil can be partially cross-linked to reduce the oil yield of thermally conductive gel, in the process of producing thermally conductive gel, there will be extrusion The reduction in speed affects production efficiency to a certain extent

Method used

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  • Low-oil-output heat-conducting gel and preparation method thereof
  • Low-oil-output heat-conducting gel and preparation method thereof
  • Low-oil-output heat-conducting gel and preparation method thereof

Examples

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Effect test

Embodiment 1

[0035] A thermally conductive gel with low oil output, made of the following raw materials: 919.5g of thermally conductive powder, 0.5g of fumed silica, 60g of silicone oil, and 20g of coupling agent. Among them, the heat-conducting powder can be selected from one of alumina, zinc oxide, boron nitride, aluminum nitride, silicon dioxide, and aluminum hydroxide. In this embodiment, alumina with a particle size of 0.5 μm is selected; silicone oil is optional From one of vinyl silicone oil, phenyl silicone oil, hydroxyl silicone oil, dimethyl silicone oil, polyether modified silicone oil, and long-chain alkyl silicone oil, this embodiment uses vinyl silicone oil with a viscosity of 140cps; the coupling agent is optional Self-propyltrimethoxysilane, decyltrimethoxysiloxane, phenylsiloxane, γ-aminopropyltriethoxysilane, γ-(2,3-epoxypropoxy)propyltrimethoxy One of the base silanes, the present embodiment selects propyl trimethoxy silane; the white carbon black is fumed white carbon b...

Embodiment 2

[0038] A low-oil thermally conductive gel, made of the following raw materials: 930g thermally conductive powder, 5g fumed silica, 50g silicone oil, and 15g coupling agent. The thermal conductive powder is alumina with a particle size of 0.5, the silicone oil is vinyl silicone oil with a viscosity of 140cps, the coupling agent is propyltrimethoxysilane, and the silica is fumed silica with a specific surface area of ​​140.

Embodiment 3

[0040] A low-oil thermally conductive gel, made of the following raw materials: 872.6g thermally conductive powder, 1.7g fumed silica, 118.3g silicone oil, and 7.4g coupling agent. The thermal conductive powder is alumina with a particle size of 0.5, the silicone oil is vinyl silicone oil with a viscosity of 140cps, the coupling agent is propyltrimethoxysilane, and the silica is fumed silica with a specific surface area of ​​140.

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Abstract

The invention relates to the field of heat-conducting gel, and particularly discloses low-oil-output heat-conducting gel and a preparation method thereof. The low-oil-output heat-conducting gel is prepared from the following raw materials in percentage by mass: 5-19% of silicone oil, 0.05-0.5% of white carbon black, 0.1-2% of a coupling agent, 0-1% of diatomite and the balance being heat-conducting powder. The preparation method comprises the steps: uniformly mixing the heat-conducting powder, the white carbon black, the silicone oil and the coupling agent according to the ratio, stirring for 30 minutes, and heating at the temperature of 120 DEG C for 2 hours to obtain the low-oil-output heat-conducting gel. The low-oil-yield heat-conducting gel provided by the invention has a relatively low oil yield and also has a certain extrusion rate.

Description

technical field [0001] The present application relates to the field of heat-conducting gels, more specifically, it relates to a low-oil-out heat-conducting gel and a preparation method thereof. Background technique [0002] At present, in the mobile phone industry, the CPU and GPU chipsets in mobile phones generate more and more heat, and there will inevitably be a certain gap between heat sources such as the CPU and GPU and the metal shield, and the existence of the gap will increase the air temperature. The contact thermal resistance will seriously affect the rapid heat transfer of the chip and cause troubles for the heat dissipation of the chip. In order to solve this problem, a thermal interface material is usually filled between the heat source and the heat sink. As a heat conduction medium, the thermal gel has excellent thermal conductivity, aging resistance and electrical insulation performance, and can reduce heat sources such as chips due to poor heat dissipation. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/08C09K5/14
CPCC09K5/08C09K5/14
Inventor 李春方宋波程龙刘晓燕
Owner 苏州柯仕达电子材料有限公司
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