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Heat-conducting silicone grease composition with low oil separation degree and preparation method thereof

A technology of thermal conductive silicone grease and oil separation, which is applied in the field of low oil separation thermal conductive silicone grease composition and its preparation, can solve the problems of easy migration of base oil, increase working stability and service life, reduce thermal resistance, The effect of easy construction

Inactive Publication Date: 2016-08-10
CHENGDU GUIBAO SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problem that base oil easily migrates in thermally conductive silicone grease, and to provide a low oil separation thermally conductive silicone grease composition

Method used

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  • Heat-conducting silicone grease composition with low oil separation degree and preparation method thereof
  • Heat-conducting silicone grease composition with low oil separation degree and preparation method thereof
  • Heat-conducting silicone grease composition with low oil separation degree and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] 30 parts by weight A;

[0062] 1 part by weight of hydrogen-containing silicone oil with a viscosity of 20 cps and a hydrogen content of 0.02 wt %;

[0063] 0.05 parts by weight methyl butynol;

[0064] 0.02 parts by weight of a platinum-vinylsiloxane complex with a platinum content of 2000ppm;

[0065] Put the above materials into a plastic jar, stir well, then add the following materials:

[0066] 100 parts by weight of alumina with a particle size of 5 μm;

[0067] 150 parts by weight of aluminum powder with a particle size of 1 μm;

[0068] 150 parts by weight of copper powder with a particle size of 10 μm;

[0069] Then put the jar into a high-speed centrifugal agitator, and centrifuge at a speed of 1000-1200r / min for 2 minutes, then take out the jar, open the bottle cap, and peel off the undispersed powder filler from the bottle wall to the bottom of the bottle. Stir moderately, and then centrifuge at a speed of 1500-1800r / min for 3-5min to prepare the sample...

Embodiment 2

[0071] 30 parts by weight B;

[0072] 0.2 parts by weight of hydrogen-containing silicone oil with a viscosity of 30 cps and a hydrogen content of 0.15 wt %;

[0073] 0.1 parts by weight of ethynyl cyclohexanol;

[0074] 0.02 parts by weight of a platinum-vinylsiloxane complex with a platinum content of 3000ppm;

[0075] Put the above materials into a plastic jar, stir well, then add the following materials:

[0076] 120 parts by weight of quartz powder with a particle size of 5 μm and hydrophobic treatment on the surface;

[0077] 120 parts by weight of aluminum oxide with a particle size of 1 μm and a hydrophobic treatment on the surface;

[0078] Then put the jar into a high-speed centrifugal agitator, and centrifuge at a speed of 1000-1200r / min for 2 minutes, then take out the jar, open the bottle cap, and peel off the undispersed powder filler from the bottle wall to the bottom of the bottle. Stir moderately, and then centrifuge at a speed of 1500-1800 r / min for 3-5 m...

Embodiment 3

[0080] 40 parts by weight C;

[0081] 0.1 parts by weight of hydrogen-containing silicone oil with a viscosity of 20 cps and a hydrogen content of 0.3 wt %;

[0082] 0.07 parts by weight of 3,7,11-trimethyldodeyn-3-alcohol;

[0083] 0.02 parts by weight of a platinum-vinylsiloxane complex with a platinum content of 1000ppm;

[0084] Put the above materials into a plastic jar, stir well, then add the following materials:

[0085] 120 parts by weight of zinc oxide with a particle size of 1 μm and hydrophobic treatment on the surface;

[0086] 120 parts by weight of aluminum powder with a particle size of 5 μm;

[0087] Then put the jar into a high-speed centrifugal agitator, and centrifuge at a speed of 1000-1200r / min for 2 minutes, then take out the jar, open the bottle cap, and peel off the undispersed powder filler from the bottle wall to the bottom of the bottle. Stir moderately, and then centrifuge at a speed of 1500-1800r / min for 3-5min to prepare the sample of Example...

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Abstract

The invention discloses a heat-conducting silicone grease composition with low oil separation degree and a preparation method thereof. The heat-conducting silicone grease composition with low oil separation degree includes: by weight, 30-40 parts of vinyl silicone oil, 0.1-1.0 part of hydrogen-containing silicone oil, 0.05-0.1 part of an inhibitor, 0.01-0.05 part of platinum-vinyl siloxane complex, and 100-500 parts of heat-conducting filler. The silicone oil in the heat-conducting silicone grease composition with low oil separation degree is difficult to transfer, and the oil separation degree is less than 0.05% (200 DEG C, 24h, HG / T 2502). The composition has secular stable thermolysis when using in the electron component, and has no harmful effect on the electron component because of the transference of the silicone oil.

Description

technical field [0001] The invention belongs to the field of thermal interface materials, and in particular relates to a low-oil-dissociation heat-conducting silicone grease composition and a preparation method thereof. Background technique [0002] In recent years, electronic products tend to be more and more miniaturized, and good heat dissipation has become a necessary guarantee for their long-term stable operation. Thermally conductive silicone grease is used to fill the gap between electronic components and radiators, so that the heat generated by electronic components can be dissipated through the radiator in time, reducing the operating temperature of electronic components and prolonging their service life. [0003] At present, the domestic thermal grease products are mainly low-end, while the high-end field often has stricter technical requirements for thermal grease. In the following patents, it can be seen that domestic technicians have conducted in-depth research...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/05C08K13/06C08K13/02C08K5/05C08K9/00C08K3/22C08K3/36C08K3/08C08G77/20
CPCC08G77/20C08K2201/003C08L83/04C08L2205/025C08K13/02C08K2003/2227C08K2003/0812C08K2003/085C08K13/06C08K9/00C08K3/36C08K2003/2296
Inventor 谭奎熊婷雷震涂程车国勇李步春王有治
Owner CHENGDU GUIBAO SCI & TECH
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