Heat conductive silicone grease composition

A heat-conducting silicone grease and composition technology, applied in the direction of heat exchange materials, chemical instruments and methods, can solve the problems of low initial temperature absorption rate at the hot end and limited space for improving thermal conductivity, so as to improve heat dissipation efficiency and use The effect of life, strong practical value, and high thermal conductivity

Active Publication Date: 2012-08-15
HUZHOU MINGSHUO OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Based on the above analysis, the material in traditional thermal grease has limited space for improving thermal conductivity, and the initial temperature absorption rate of the hot end is low.

Method used

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  • Heat conductive silicone grease composition
  • Heat conductive silicone grease composition

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Experimental program
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Embodiment 1

[0064] The additive components and their mass ratios used are as follows: the mass ratio of carbon nanotubes, graphene, and particles is 1:6:3, and the volume ratio of the additives as a whole to silicone oil is 6:4.

[0065] The purity of the carbon nanotubes in the above preferred embodiments is ≥95wt%, and the ash content is ≤0.2wt%.

[0066] The particles in the above preferred embodiment are phase-change capsules wrapped in paraffin wax, the material including paraffin wax is aluminum oxide, the phase-transition temperature is 29°C, and the average particle size is 60um.

[0067] The silicone oil described in the above preferred embodiments is a mixture of simethicone and hydrogen-containing silicone oil with a viscosity of 500,000 cSt at 25°C.

[0068] Preparation

[0069] Pour graphene and particles with a mass ratio of 6:3 into a small amount of silicone oil for pre-mixing, and slowly add carbon nanotubes of the required quality under the condition of mechanical stirr...

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Abstract

The invention discloses a heat conductive silicone grease composition which mainly contains a carbon nano tube, graphite, phase-change capsule particles and silicone oil, wherein the carbon nano tube can speed up the conduction of heat further; the phase-change capsule particles are used for improving the initial temperature absorption velocity of a heat end; the phase-change capsule particles, the carbon nano tube and graphite in a fluid form full-three-dimensional network distribution of particles (phase-change capsule), a line ( the carbon nano tube) and a plane (graphite) in the fluid finally. The heat conductive silicone grease composition provided by the invention has high heat conduction rate and low heat resistivity, the heat radiation efficiency of the heat conductive silicone grease is improved greatly, the service life of the heat conductive silicone grease is prolonged greatly, and the heat conductive silicone grease composition has high practical value.

Description

technical field [0001] The invention belongs to the field of thermal interface materials, and in particular provides a thermally conductive silicone grease composition. Background technique [0002] With the rapid development of computer technology, the calculation speed of the central processing unit (Central Processing Unit, CPU), which is the core of the computer system, is getting faster and faster, and its calorific value is also increasing. If the CPU heat dissipation is not good and the temperature is too high, it is easy to cause problems such as hot start and crash of the computer during operation. Therefore, providing a good cooling system for the CPU is one of the important conditions to ensure the normal operation of the computer. LED is a new type of injection electroluminescent device, and its advantage lies in energy saving. At present, the power of a single LED device has jumped from the initial milliwatt level to the current tens of watt level. According ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C09K5/06C09K5/14C08K13/06C08K9/10C08K5/01C08K7/00C08K3/04
Inventor 钱新明张文宾陈威
Owner HUZHOU MINGSHUO OPTOELECTRONICS TECH CO LTD
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