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Method for preparing composite material of heat conduction silicon rubber of carbon aluminum-wrapping composite nano filler

A heat-conducting silicone rubber and nano-filler technology, which is applied in the treatment of fibrous fillers and dyed low-molecular organic compounds, can solve the problems of reduced reliability and achieve the effect of improving thermal conductivity and excellent thermal conductivity

Active Publication Date: 2011-08-10
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to statistics, every time the temperature of electronic components rises by 2°C, its reliability decreases by 10%; the life at 50°C is only one-sixth of that at 25°C

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) The pretreatment of carbon-coated aluminum nanoparticles, the silane coupling agent of 0.5 mass parts mass concentration is that the ethanol dissolving of 95% is mixed with the solution that mass concentration is 25%, and continuous stirring, after dissolving, average particle diameter Add 50 parts by mass of carbon-coated aluminum nanoparticles with a diameter of 20 to 100 nm into a silane coupling agent alcohol solution, stir, dry at 120°C for 10 hours, and then dry at 150°C for 1 hour to obtain the modified carbon-coated aluminum nanoparticles The particles are placed in a desiccator for later use.

[0016] (2) 100 mass parts of silicone rubber raw rubber is added on the roller, after the silicone rubber raw rubber wraps the roll, first add 50 mass parts of modified carbon-coated aluminum nanoparticles, then add 1 mass part of hydroxy silicone oil, Repeated kneading on the roller until uniform, thin pass 5 times, and finally add 3 parts by mass of double 2,5 vulc...

Embodiment 2

[0021] (1) The pretreatment of carbon-coated aluminum nanoparticles, the silane coupling agent of 1 mass part is dissolved in the ethanol that mass concentration is 95% and is mixed with the solution that mass concentration is 25%, and continuous stirring, after dissolving, average particle diameter Add 100 parts by mass of carbon-coated aluminum nanoparticles with a diameter of 20 to 100 nm into a silane coupling agent alcohol solution, stir, dry at 120°C for 10 hours, and then dry at 150°C for 1 hour to obtain the modified carbon-coated aluminum nanoparticles The particles are placed in a desiccator for later use.

[0022] (2) 100 mass parts of silicone rubber raw rubber is added on the roller, after the silicone rubber raw rubber wraps the roll, first add 100 mass parts of modified carbon-coated aluminum nanoparticles, then add 1.5 mass parts of hydroxy silicone oil, Repeated kneading on the roller until uniform, thin pass 8 times, and finally add 3 parts by mass of double ...

Embodiment 3

[0027] (1) the pretreatment of carbon-coated aluminum nanoparticles, the silane coupling agent of 1.5 mass parts is dissolved in the ethanol that mass concentration is 95% and is mixed with the solution that mass concentration is 25%, and continuous stirring, after dissolving, average particle diameter Add 150 parts by mass of carbon-coated aluminum nanoparticles with a diameter of 20 to 100 nm into the silane coupling agent alcohol solution, stir, dry at 120°C for 10 hours, and then dry at 150°C for 1 hour to obtain modified carbon-coated aluminum nanoparticles Put in a desiccator for later use.

[0028] (2) Add 100 parts by mass of silicone rubber raw rubber to the roller. After the raw silicone rubber is wrapped with the roller, add 150 parts by mass of modified carbon-coated aluminum nanoparticles, then add 2 parts by mass of hydroxysilicone oil. Repeatedly knead until uniform, thin pass 10 times, finally add 3 parts by mass of double 2,5 vulcanizing agent, and then knead ...

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Abstract

The invention discloses a method for preparing a composite material of heat conduction silicon rubber of a carbon aluminum-wrapping composite nano filler. The composite material takes silicon rubber as a substrate, and carbon aluminum-wrapping nano particles are the heat conduction rubber which is prepared by the heat conduction filler and has superior overall performance, and can be used as a heat conduction material or a heat radiation material in automobiles and electric and electronic equipment; the invention adopts the carbon aluminum-wrapping nano particles, the carbon aluminum-wrappingnano particles have the characteristic of excellent overall performance, such as high heat conduction, high chemical stability, small thermal expansion coefficient, low density and the like, are mixed with the silicon rubber after preliminary treatment and are uniformly dispersed in the silicon rubber substrate, and an integral heat conduction network chain is formed, thus enhancing the heat conductivity coefficient of the composite material.

Description

technical field [0001] The invention relates to the technical field of preparation of high thermal conductivity composite materials, in particular to a preparation method of carbon-coated aluminum composite nano-filler thermal conductivity silicone rubber composite materials. Background technique [0002] With the development of science and technology, electronic components are becoming more and more dense and miniaturized, which puts forward higher requirements for the stability of electronic devices. The reliability and performance of electronic products depend largely on the effectiveness of the heat dissipation materials and heat dissipation measures used. Thermal failure is the main factor of electronic package failure, accounting for more than 50%. With the rapid development of information technology, high encapsulation and high reliability requirements are put forward for electronic devices. According to statistics, the reliability of electronic components decreases...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04C08L83/06C08K9/06B29C43/58B29C35/02C09C1/00C09C3/08
Inventor 张海燕李丽萍陈福林
Owner GUANGDONG UNIV OF TECH