CN103772998A - Preparation method of heat-conductive silicone rubber - Google Patents
Preparation method of heat-conductive silicone rubber Download PDFInfo
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- CN103772998A CN103772998A CN201410032217.0A CN201410032217A CN103772998A CN 103772998 A CN103772998 A CN 103772998A CN 201410032217 A CN201410032217 A CN 201410032217A CN 103772998 A CN103772998 A CN 103772998A
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Abstract
The invention relates to a preparation method of a heat-conductive silicone rubber. The method comprises the following steps: (1) weighing the following raw materials in parts by weight: 57 to 87 parts of methyl-vinyl siloxane rubber, 15 to 25 parts of aluminum powder, 6 to 10 parts of silane crosslinking agent, 1 to 3 parts of liquidity dispersant, 1 to 3 parts of ceramic powder and 1 to 3 parts of silane coupling agent; (2) putting the methyl-vinyl siloxane rubber, the aluminum powder, the liquidity dispersant, the ceramic powder and the silane coupling agent into a stainless steel reaction kettle, vacuumizing and heating for 30 to 50 minutes at the temperature of 120 DEG C to 180 DEG C; and (3) adding the silane crosslinking agent when the reaction kettle is naturally cooled to reach 50 DEG C to 70 DEG C, continuously stirring, vacuumizing and reacting at the temperature of 80 DEG C to 100 DEG C, thereby obtaining the heat-conductive silicone rubber. The aluminum powder and the ceramic powder are added into the conventional rubber formula, so that the heat conductivity of the rubber is improved; the aging of the rubber is delayed; the service life of a rubber product is prolonged.
Description
Technical field
The present invention relates to rubber materials, be specifically related to a kind of preparation method of heat-conducting silicon rubber.
Background technology
Silicon rubber is a kind of common material, be widely used in electronic applications and automobile industry, but silicon rubber heat-resisting is poor, under hot conditions, be heated and easily decomposite free oxygen free radical, and attack silicon rubber molecular backbone chain, cause the decomposition of rubber molecule structure, cause silicon rubber high temperature ageing, lose use value.And along with scientific and technical development, continuing to bring out of various advanced machinery equipment, has also proposed requirements at the higher level to the resistance toheat of silicon rubber.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of preparation method of heat-conducting silicon rubber.
For solving prior art problem, the technical solution used in the present invention is: a kind of preparation method of heat-conducting silicon rubber, comprises the following steps:
(1) meter is got following raw material by weight: 57～87 parts, ethylene methacrylic silicon rubber, 15～25 parts of aluminium powders, 6～10 parts of silane crosslinkers, 1～3 part of mobility dispersion agent, 1～3 part of ceramics powder, 1～3 part of silane coupling agent;
(2) ethylene methacrylic silicon rubber, aluminium powder, mobility dispersion agent, ceramics powder and silane coupling agent being put into stainless steel cauldron, then be evacuated to-0.095～-0.1Mpa, is at 120～180 ℃, to heat 30～50 minutes in temperature;
(3) question response still naturally cools to 50～70 ℃, adds silane crosslinker, constantly stirs 5～10 minutes, then be evacuated to-0.095～-0.1Mpa, and temperature is that 80～100 ℃ of reactions obtain heat-conducting silicon rubber for 20～30 minutes.
As preferably, the order number of described ceramics powder is 80～100 orders.
As preferably, described churning time is 10 minutes.
Beneficial effect of the present invention: the present invention adds aluminium powder and ceramics powder in conventional rubber compounding, improves the heat conductivility of rubber, slow down rubber because temperature is high and heat conduction cause slowly aging, the life-span of prolongation rubber item.
Embodiment
In order to make technical scheme solved by the invention and beneficial effect clearer, below in conjunction with embodiment, the present invention is further elaborated.
Embodiment 1
A preparation method for heat-conducting silicon rubber, comprises the following steps:
(1) meter is got following raw material by weight: 57 parts, ethylene methacrylic silicon rubber, 15 parts of aluminium powders, 6 parts of silane crosslinkers, 1 part of mobility dispersion agent, 1 part of ceramics powder, 1 part of silane coupling agent;
(2) ethylene methacrylic silicon rubber, aluminium powder, mobility dispersion agent, ceramics powder and silane coupling agent are put into stainless steel cauldron, then be evacuated to-0.095Mpa, be at 120 ℃, to heat 30 minutes in temperature;
(3) question response still naturally cools to 50 ℃, adds silane crosslinker, constantly stirs 5 minutes, then is evacuated to-0.095Mpa, and temperature is that 80 ℃ of reactions obtain heat-conducting silicon rubber for 20 minutes.
As improved, the order number of ceramics powder is 80 orders.
Embodiment 2
A preparation method for heat-conducting silicon rubber, comprises the following steps:
(1) meter is got following raw material by weight: 87 parts, ethylene methacrylic silicon rubber, 25 parts of aluminium powders, 10 parts of silane crosslinkers, 3 parts of mobility dispersion agents, 3 parts of ceramics powders, 3 parts of silane coupling agents;
(2) ethylene methacrylic silicon rubber, aluminium powder, mobility dispersion agent, ceramics powder and silane coupling agent are put into stainless steel cauldron, then be evacuated to-0.1Mpa, be at 180 ℃, to heat 50 minutes in temperature;
(3) question response still naturally cools to 70 ℃, adds silane crosslinker, constantly stirs 10 minutes, then is evacuated to-0.1Mpa, and temperature is that 100 ℃ of reactions obtain heat-conducting silicon rubber for 30 minutes.
As improved, the order number of ceramics powder is 100 orders.
Embodiment 3
A preparation method for heat-conducting silicon rubber, comprises the following steps:
(1) meter is got following raw material by weight: 75 parts, ethylene methacrylic silicon rubber, 20 parts of aluminium powders, 8 parts of silane crosslinkers, 2 parts of mobility dispersion agents, 2 parts of ceramics powders, 2 parts of silane coupling agents;
(2) ethylene methacrylic silicon rubber, aluminium powder, mobility dispersion agent, ceramics powder and silane coupling agent are put into stainless steel cauldron, then be evacuated to-0.098Mpa, be at 160 ℃, to heat 40 minutes in temperature;
(3) question response still naturally cools to 60 ℃, adds silane crosslinker, constantly stirs 8 minutes, then is evacuated to-0.098Mpa, and temperature is that 90 ℃ of reactions obtain heat-conducting silicon rubber for 25 minutes.
As improved, the order number of ceramics powder is 90 orders.
By silicon rubber of the present invention and ordinary silicon rubber carries out thermal conductivity and high thermal resistance compares, result is as shown in the table:
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. a preparation method for heat-conducting silicon rubber, is characterized in that comprising the following steps:
(1) meter is got following raw material by weight: 57～87 parts, ethylene methacrylic silicon rubber, 15～25 parts of aluminium powders, 6～10 parts of silane crosslinkers, 1～3 part of mobility dispersion agent, 1～3 part of ceramics powder, 1～3 part of silane coupling agent;
(2) ethylene methacrylic silicon rubber, aluminium powder, mobility dispersion agent, ceramics powder and silane coupling agent being put into stainless steel cauldron, then be evacuated to-0.095～-0.1Mpa, is at 120～180 ℃, to heat 30～50 minutes in temperature;
(3) question response still naturally cools to 50～70 ℃, adds silane crosslinker, constantly stirs 5～10 minutes, then be evacuated to-0.095～-0.1Mpa, and temperature is that 80～100 ℃ of reactions obtain heat-conducting silicon rubber for 20～30 minutes.
2. the preparation method of a kind of heat-conducting silicon rubber according to claim 1, is characterized in that: the order number of described ceramics powder is 80～100 orders.
3. the preparation method of a kind of heat-conducting silicon rubber according to claim 1, is characterized in that: described churning time is 10 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410032217.0A CN103772998A (en) | 2014-01-24 | 2014-01-24 | Preparation method of heat-conductive silicone rubber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410032217.0A CN103772998A (en) | 2014-01-24 | 2014-01-24 | Preparation method of heat-conductive silicone rubber |
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| CN103772998A true CN103772998A (en) | 2014-05-07 |
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| CN201410032217.0A Withdrawn CN103772998A (en) | 2014-01-24 | 2014-01-24 | Preparation method of heat-conductive silicone rubber |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030171487A1 (en) * | 2002-03-11 | 2003-09-11 | Tyco Electronics Corporation | Curable silicone gum thermal interface material |
| CN101831181A (en) * | 2010-05-21 | 2010-09-15 | 浙江三元电子科技有限公司 | Addition thermal conductive insulation silicon rubber composite material and preparation method thereof |
| CN103254647A (en) * | 2012-02-20 | 2013-08-21 | 深圳德邦界面材料有限公司 | Heat-conductive gap interface material and preparation method thereof |
-
2014
- 2014-01-24 CN CN201410032217.0A patent/CN103772998A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030171487A1 (en) * | 2002-03-11 | 2003-09-11 | Tyco Electronics Corporation | Curable silicone gum thermal interface material |
| CN101831181A (en) * | 2010-05-21 | 2010-09-15 | 浙江三元电子科技有限公司 | Addition thermal conductive insulation silicon rubber composite material and preparation method thereof |
| CN103254647A (en) * | 2012-02-20 | 2013-08-21 | 深圳德邦界面材料有限公司 | Heat-conductive gap interface material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| WEN-YING ZHOU等: "Thermally conductive silicon rubber reinforced with boron nitride particle", 《POLYMER COMPOSITES》, vol. 28, no. 1, 23 January 2007 (2007-01-23) * |
| 翁国文: "《橡胶材料简明读本》", 30 June 2013, article "橡胶材料简明读本", pages: 167,248,267 * |
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Application publication date: 20140507 |