Preparation method of silicone rubber pad

A technology of silicone rubber and compounded rubber, applied in the field of thermally conductive polymer composite materials, can solve the problems of increasing production costs, failing to meet the requirements of thermal conductivity, and graphene orientation, etc., to enhance surface viscosity, speed up vulcanization rate, improve The effect of thermal conductivity

Active Publication Date: 2016-04-20
DEYANG CARBONENE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent uses a mixture of expanded graphite and other carbon materials as a filler to improve the thermal conductivity of the silicone rubber composite material. Although this method can increase the thermal conductivity of the silicone rubber composite material to 4W/m·K, it still cannot meet the high power requirements. Electronic equipment requires thermal conductivity of thermal gap filler materials, and its preparation process is very complicated, which is not conducive to industrial production
[0006] Another example is that the p

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  • Preparation method of silicone rubber pad

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Example Embodiment

[0038] Example 1

[0039] A preparation method of a silicone rubber pad, comprising the following steps:

[0040] (1) Preparation of nano-carbon-silicon rubber mixture: add 100 parts by weight of silicone rubber into the kneader, then add 100-400 parts by weight of nano-carbon material, and knead evenly to obtain a nano-carbon-silicon rubber mixture.

[0041] (2) Preparation of mixed rubber: first add the nano-carbon-silicon rubber mixture into the open mill, and then add 10-300 parts by weight of inorganic thermally conductive powder, 1-10 parts by weight of catalyst and 1-10 parts by weight of catalyst The mixture composed of dimethyl silicone oil and hydrogen-containing silicone oil is smelted for 10-60 minutes, and the mixed rubber can be obtained after the smelting is completed.

[0042] (3) Put the mixed rubber into the mold, and then use the physical method to orient the mixed rubber to obtain a sample pad in which the carbon nanomaterials are oriented in the silicone ...

Example Embodiment

[0050] Example 2

[0051] A preparation method of a silicone rubber pad, comprising the following steps:

[0052] (1) Preparation of nanocarbon-silicon rubber mixture: 100g of raw silicone rubber is added to the kneader, and then 100g of nanocarbon material is added. The nanocarbon material is a mixture of graphene and flake graphite, which is obtained after kneading evenly. Nanocarbon-silicon rubber compound.

[0053] (2) Preparation of mixed rubber: firstly, the nano-carbon-silicon rubber mixture was added to the open mill for open mixing. After 5 minutes of open mixing, 10g of metal aluminum powder, 1g of tert-butyl peroxybenzoate and 1g of The mixture composed of dimethyl silicone oil and hydrogen-containing silicone oil is smelted for 10 minutes, and the mixed rubber can be obtained after the smelting is completed.

[0054] Wherein, dimethyl silicone oil with a viscosity of 500 mPa·s is added to the tert-butyl peroxybenzoate, and the mass percentage of tert-butyl peroxy...

Example Embodiment

[0057] Example 3

[0058] A preparation method of a silicone rubber pad, comprising the following steps:

[0059] (1) Preparation of nano-carbon-silicon rubber mixture: 100 g of raw silicone rubber was added to the kneader, and then 400 g of nano-carbon material, which was a mixture of graphene and carbon nanotubes, was kneaded uniformly. A nanocarbon-silicon rubber mixture was obtained.

[0060] (2) Preparation of mixed rubber: firstly, the nano-carbon-silicon rubber mixture was added to the open mill for open mixing. After 20 minutes of open mixing, 300 g of metal aluminum powder, 10 g of tert-butyl peroxybenzoate and 10 g of The mixture composed of dimethyl silicone oil and hydrogen-containing silicone oil is smelted for 60 minutes, and the mixed rubber can be obtained after the smelting is completed.

[0061] Wherein, dimethyl silicone oil with a viscosity of 5000 mPa·s is added to the tert-butyl peroxybenzoate, and the mass percentage of tert-butyl peroxybenzoate and di...

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Abstract

The invention discloses a preparation method of a silicone rubber pad. The preparation method includes the following steps that 1, a nanocarbon material is added to silicone rubber, and after uniform kneading is conducted, a nanocarbon-silicone rubber mixture is obtained; 2, inorganic thermal conductivity power, a catalyst and a mixture composed of simethicone and hydrogen containing silicone oil are added to the nanocarbon-silicone rubber mixture, and rubber compound is obtained after open milling is conducted; 3, physical orientation is adopted for the rubber compound, and a sample pad with the nanocarbon material arranged in the silicone rubber in an oriented mode is obtained; 4, the sample pad is vulcanized, and the finished silicone rubber pad is obtained. By means of the preparation method, nanocarbon can be arranged in the silicone rubber in an oriented mode, a regular nanocarbon oriented thermal conductivity network structure is formed, and thus a product with an ultrahigh thermal conductivity coefficient is obtained.

Description

technical field [0001] The invention relates to the field of heat-conducting polymer composite materials, in particular to a method for preparing a silicon rubber pad with ultra-high thermal conductivity. Background technique [0002] With the rapid development of microelectronic integration technology and high-density printed board assembly technology, today's microelectronic equipment is gradually developing towards miniaturization and convenience. Driven by high power, the working thermal environment of semiconductors moves rapidly to high temperature, which requires that the heat generated by semiconductors can be conducted at high speed to ensure the normal operation of electronic equipment. With the development of electronic equipment in the direction of high power and miniaturization, the requirements for the thermal conductivity of thermally conductive interstitial materials are getting higher and higher. It can even be said that the thermal conductivity of thermally...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08L83/07C08K13/04C08K7/06C08K3/04C08K5/14C08K3/34C08K3/38C08K7/24
CPCC08K2201/011C08K2201/014C08L83/04C08L2205/03C08L2205/035C08K13/02C08K3/04C08K5/14C08K2003/0812C08K13/04C08K7/24C08K2003/085C08K7/06C08K3/34C08K2003/385
Inventor 姚林何洪泉尹天平杨桂英高华
Owner DEYANG CARBONENE TECH
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