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Heat-conducting silicone grease

A heat-conducting silicone grease and silane-based technology, which is applied in the field of heat-conducting silicone grease, can solve problems such as increasing production costs, and achieve the effects of improving thermal conductivity, high product cost performance, and large heat transfer specific surface area

Inactive Publication Date: 2015-04-22
HUIZHOU KINGBALI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of some thermally conductive materials such as carbon nanotubes, phase change capsules, etc., increases the production cost to a certain extent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1 The following raw materials were used in parts by weight: 67 parts of methyl ethoxy silicone oil, 16 parts of fibrous carbon nanotubes, 25 parts of alumina, 12 parts of waste rubber nanopowder, 0.2 parts of silane-based quaternary ammonium salt phase transfer catalyst, 3.5 parts of silicone oil, 8 parts of methoxysilane, 0.8 part of antioxidant 1076, prepared according to the following steps:

[0014] (1) Dry the fibrous carbon nanotubes at a vacuum degree of 0.03 MPa for 10 minutes, add the dried carbon nanotubes, alumina, waste rubber nano-powder, and methoxysilane coupling agent into a high-speed disperser, and rotate at a speed of 900r / Stir for 5 min, and heat to 180°C while stirring;

[0015] (2) Add methyl ethoxy silicone oil, silicone oil, silane-based quaternary ammonium salt phase transfer catalyst, and antioxidant 1076 into the disperser in sequence, and continue stirring for 15 minutes. After stirring, use a double-roller mill to grind the mixture ...

Embodiment 2

[0016] Example 2 The following raw materials were used in parts by weight: 67 parts of methyl ethoxy silicone oil, 16 parts of fibrous carbon nanotubes, 25 parts of alumina, 12 parts of waste rubber nanopowder, 0.2 parts of silane-based quaternary ammonium salt phase transfer catalyst, 3.5 parts of silicone oil, 8 parts of aminosilane, 0.8 part of antioxidant 1076, prepared according to the following steps:

[0017] (1) Dry the fibrous carbon nanotubes at a vacuum degree of 0.03MPa for 10 minutes, add the dried carbon nanotubes, alumina, waste rubber nanopowder, and aminosilane coupling agent into a high-speed disperser, and stir at a speed of 800r / min 10min, while stirring and mixing, heat to 200°C;

[0018] (2) Add methyl ethoxy silicone oil, silicone oil, silyl quaternary ammonium salt phase transfer catalyst, and antioxidant 1076 into the disperser in sequence, and continue stirring for 10 minutes. After stirring, use a double-roller mill to grind the mixture for 2.5 hours...

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Abstract

The invention discloses heat-conducting silicone grease which is prepared from the following raw materials in parts by weight: 67 parts of methyl ethoxy silicone oil, 16 parts of fibrous carbon nano-tubes, 25 parts of aluminum oxide, 12 parts of scrap rubber nano-powder, 0.2 part of silane-based quaternary ammonium salt phase transfer catalysts, 3.5 parts of organic silicone oil, 8 parts of silane coupling agents and 0.8 part of antioxidants 1076. According to the heat-conducting silicone grease, the heat-conducting property of a product is enhanced by compounding the fibrous carbon nano-tubes, the aluminum oxide and the scrap rubber nano-powder as heat-conducting insulating fillers, the scrap rubber nano-powder can be used for enhancing the flowability of the product in a preparation process and filling a gap to obtain larger heat-transfer specific surface area, so that a final heat-conducting silicone grease product has the advantages of excellent heat conductivity, electrical insulation, weather resistance, hydrophobicity, physiological inertia and less surface tension, lower viscosity-temperature coefficient, higher compression resistance and no corrosion effect and can be used as a gas filling medium between an electronic element and a radiating fin.

Description

technical field [0001] The invention relates to an interface material, in particular to a heat-conducting silicone grease, which belongs to the technical field of polymer interface materials. Background technique [0002] Thermally conductive silicone grease is commonly known as heat dissipation paste. Thermally conductive silicone grease is mostly made of organic silicone as the main raw material, adding materials with excellent heat resistance and thermal conductivity to make a thermally conductive silicone grease compound. It is used in power amplifiers, transistors, electronic tubes, Heat conduction and heat dissipation of electronic components such as CPU, so as to ensure the stability of electrical performance of electronic instruments and meters. Since the silicone grease composition is often closer to the heat source than the radiator, its heat resistance directly determines the life and reliability of the system. Therefore, thermally conductive silicone grease must...

Claims

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Application Information

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IPC IPC(8): C08L83/06C08L21/00C08K13/04C08K7/24C08K3/22C08K5/134
Inventor 杨永佳张彦兵杨小义
Owner HUIZHOU KINGBALI TECH
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