Special silica gel with high coefficient of thermal conductivity for electronic industries and preparation method thereof

A technology with high thermal conductivity in the electronics industry, applied in chemical instruments and methods, organic insulators, materials for heat exchange, etc., can solve the problems of gap in thermal conductivity, the advantages cannot be maximized, and the scope of use is small, and the cross-linking density can be achieved. Low, excellent flexibility, short cure time effect

Inactive Publication Date: 2019-04-09
江苏中恒电子新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, compared with the thermally conductive silicone grease currently available on the market, there is still a big gap in thermal conductivity.
With the continuous updating and upgrading of miniaturized, sophisticated and high-efficiency electronic products, the heat conduction requirements of electronic products have been further improved. If thermally conductive silicone gel cannot have the same or even stronger heat conduction, moisture-proof, and insulating effects than thermally conductive silicone grease, then Its scope of use will become smaller and smaller, and its advantages cannot be maximized.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] 1. Add 7 parts of long-chain alkyl silicone oil, 5 parts of polyether silicone oil, and 2 parts of trifluoropropyl silicone oil into the reaction kettle, heat to 80-100°C, and mix and stir for 1-2 hours with a vacuum pump, then use oil Heat the bath to 120-140°C, stir for 2-3 hours, and cool to 30-40°C at room temperature to obtain in-process product A.

[0069]2. Put 9 parts of zinc oxide, 46 parts of spherical alumina, 24 parts of aluminum nitride, 8 parts of boron nitride, and 1.5 parts of surfactant into a three-necked flask equipped with a condenser, and add an appropriate amount of 80% to 95% isopropanol, the three-necked flask was heated and stirred in a water bath at 65-85°C for 4 hours to react. The reactant was dried at 120° C. for 4 hours, and then washed twice with absolute ethanol, and the washed reactant was dried at 120° C. for 4 hours to obtain process product B.

[0070] 3. Dissolve 11 parts of sodium hydrochloride and 8 parts of polydimethylsiloxane i...

Embodiment 2

[0074] 1. Add 7 parts of long-chain alkyl silicone oil, 4 parts of polyether silicone oil, and 3 parts of trifluoropropyl silicone oil into the reaction kettle, heat to 80-100°C, vacuumize and mix with a vacuum pump for 1-2 hours, and then use oil Heat the bath to 120-140°C, stir for 2-3 hours, and cool to 30-40°C at room temperature to obtain in-process product A.

[0075] 2. Put 10 parts of zinc oxide, 50 parts of spherical alumina, 28 parts of aluminum nitride, 10 parts of boron nitride, and 1.5 parts of surfactant into a three-necked flask equipped with a condenser, and add an appropriate amount of 80% to 95% isopropanol, the three-necked flask was heated and stirred in a water bath at 65-85°C for 4 hours to react. The reactant was dried at 120° C. for 4 hours, and then washed twice with absolute ethanol, and the washed reactant was dried at 120° C. for 4 hours to obtain process product B.

[0076] 3. Dissolve 9 parts of sodium hydrochloride and 9 parts of polydimethylsil...

Embodiment 3

[0080] 1. Add 6 parts of long-chain alkyl silicone oil, 4 parts of polyether silicone oil, and 3 parts of trifluoropropyl silicone oil into the reaction kettle, heat to 80-100°C, vacuumize and mix with a vacuum pump for 1-2 hours, and then use oil Heat the bath to 120-140°C, stir for 2-3 hours, and cool to 30-40°C at room temperature to obtain in-process product A.

[0081] 2. Put 11 parts of zinc oxide, 45 parts of spherical alumina, 22 parts of aluminum nitride, 8 parts of boron nitride, and 1 part of surfactant into a three-necked flask equipped with a condenser, and add an appropriate amount of 80% to 95% isopropanol, the three-necked flask was heated and stirred in a water bath at 65-85°C for 4 hours to react. The reactant was dried at 120° C. for 4 hours, and then washed twice with absolute ethanol, and the washed reactant was dried at 120° C. for 4 hours to obtain process product B.

[0082] 3. Dissolve 13 parts of sodium hydrochloride and 10 parts of polydimethylsilox...

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PUM

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Abstract

The invention discloses special silica gel with high coefficient of thermal conductivity for electronic industries. The special silica gel with the high coefficient of thermal conductivity is preparedfrom long-chain alkyl silicone oil (viscosity 600-900mm<2>/s), polyether silicone oil (viscosity 200-400mm<2>/s), trifluoropropyl silicone oil (viscosity 400-600mm<2>/s), 6-11 parts of zinc oxide (1micrometers), spherical aluminum oxide (20 micrometers), aluminum nitride (10 micrometers), boron nitride (3 micrometers), silicon carbide (5 micrometers), sodium hydrochloride, polydimethylsiloxane,sulfonated grapheme, 1-hydroxybenzotriazole, dicyclohexylcarbodiimide, and N-methylpyrrolidone. The invention also discloses a preparation method of the special silica gel with the high coefficient ofthermal conductivity for electronic industries.

Description

technical field [0001] The invention belongs to the field of heat-conducting silicone gel manufacturing, and more specifically, the invention relates to a high-thermal-conductivity insulating silicone gel specially used for the electronics industry and a preparation method thereof. Background technique [0002] As a relatively new type of thermal interface material, thermally conductive silicone gel has the advantages of good softness and affinity, weather resistance, high and low temperature resistance, and good insulation. It can cooperate with products with low pressure and high compressive modulus during use. Demand, its plasticity is strong, easy to operate, and can ensure good contact with uneven interfaces and irregular devices. At the same time, the thermally conductive gel can be controlled quantitatively by the fixed point of the dispenser to realize automatic and continuous production operations, which can greatly improve production efficiency while saving labor. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/12C08L83/04C08K13/06C08K9/00C08K9/04C08K3/04C08K7/18C08K3/22C08K3/28C08K3/38C08K3/34C08J3/09C08J3/24H01B3/46C09K5/14C08G77/46
CPCC08G77/46C08J3/096C08J3/246C08J2383/12C08J2483/04C08K7/18C08K9/00C08K9/04C08K13/06C08K2003/2296C08K2003/285C08K2003/385C09K5/14C08K3/042H01B3/46
Inventor 周静周文菲
Owner 江苏中恒电子新材料有限公司
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