Graphene modified silicone grease with high thermal conductivity and preparation method thereof

A technology of high thermal conductivity and insulating silicon, which is applied in the direction of chemical instruments and methods, heat exchange materials, etc., can solve the problems of insufficient heat conduction effect and high price, reduce oil separation, improve thermal conductivity and specific heat capacity, and enhance The effect of the dispersion effect

Inactive Publication Date: 2019-03-29
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] Currently commercially available thermal conductive silicone grease, products with high thermal conductivity are expensive due to the use of expensive materials such as silver or diamond, and low-end products often fail to achieve suitable thermal conductivity effects. Some new materials such as carbon nanotubes are used in large quantities. In terms of production and stable use, there are still technical bottlenecks that cannot be broken through. Therefore, there is an urgent need for a material that is easy to obtain and handle, with moderate cost, can be mass-produced in factories, and has excellent thermal conductivity, insulation and moisture-proof characteristics for the electronics industry. Thermal grease appears

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 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.

[0053] 2. Put 9 parts of zinc oxide, 46 parts of spherical alumina, 24 parts of aluminum nitride, 8 parts of boron nitride, and 2 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.

[0054] 3. Add charge treatment liquid to process product B to carry out positive charge tre...

Embodiment 2

[0058] 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.

[0059]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.

[0060] 3. Add charge treatment liquid to process product B to carry out positive c...

Embodiment 3

[0064] 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.

[0065] 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.

[0066] 3. Add charge treatment liquid to process product B to carry out positive char...

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PUM

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Abstract

The invention discloses an insulating silicone grease with high heat conductivity coefficient special for electron industry. The insulating silicone grease is prepared from raw materials including long-chain alkyl silicone oil (viscosity of 600-900mm2/s), polyether silicone oil (viscosity of 200-400mm2/s, viscosity of 400-600mm2/s), zinc oxide (1mum), spherical aluminum oxide (20mum), aluminum nitride (10mum), boron nitride (3mum), silicon carbide (5mum) and sulfonated graphene. The invention also discloses a preparation method for the insulating silicone grease with high heat conductivity coefficient special for electron industry.

Description

technical field [0001] The invention belongs to the field of heat-conducting silicone grease manufacturing, and more specifically, the invention relates to a special high-thermal-conductivity insulating silicone grease for the electronics industry and a preparation method thereof. Background technique [0002] Thermally conductive silicone grease is a paste-like thermal interface thermally conductive material with good thermal conductivity and fluidity, because it can ensure the close contact between electronic components and heat sinks and quickly release a large amount of heat generated when electronic products are used. The product field has been widely used. With the rapid progress of industry and the rapid development of science and technology, densification, miniaturization, and high efficiency have become the development trend of electronic products. Smaller volume, more precise components and greater power make electronic products appear unit in use. Time and high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L83/12C08L83/08C08K13/06C08K9/04C08K3/22C08K3/38C08K3/04C08K7/18C09K5/14
CPCC08K2003/2296C08K2003/385C08L83/04C08L83/12C08L2205/03C09K5/14C08L83/08C08K13/06C08K9/04C08K3/22C08K3/38C08K3/042C08K7/18
Inventor 周静周文菲
Owner 江苏中恒电子新材料有限公司
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