Insulated efficient heat-conducting silicone grease and preparation method thereof

A heat-conducting silicone grease and high-efficiency technology, which is applied in the field of insulating high-efficiency heat-conducting silicone grease and its preparation, can solve the problems of easy dry cracking, poor heat conduction effect, oil leakage, etc., and achieve easy operation, low indirect contact thermal resistance, and simple process Effect

Inactive Publication Date: 2020-10-16
广东陆祥新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide an insulating high-efficiency heat-conducting silicone grease, which solves the problems of poor thermal conductivity, easy cracking and oil leakage of the existing heat-conducting silicone grease

Method used

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  • Insulated efficient heat-conducting silicone grease and preparation method thereof
  • Insulated efficient heat-conducting silicone grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The insulating high-efficiency heat-conducting silicone grease provided in Example 1 includes the following components in parts by weight:

[0030] 65 parts of modified thermally conductive ceramic powder with an average particle size of 10 μm, 25 parts of modified thermally conductive ceramic powder with an average particle size of 5 μm, 15 parts of modified thermally conductive ceramic powder with an average particle size of 200 nm, modified 0.5 parts of flake graphene, 5 parts of modified carbon fiber with an average particle size of 35 μm, 30 parts of liquid metal thermal paste, 8 parts of methyl silicone oil with a viscosity of 1000CP, 2 parts of vinyl silicone oil with a viscosity of 500CP, dodecyl 0.5 part of trimethoxysilane, 0.5 part of antioxidant 1010.

[0031] By calculation, in the above components, the weight ratio of the liquid metal thermal paste to the weight of the composite spherical thermal conductive filler is 1:3.5; the weight ratio of the weight o...

Embodiment 2

[0039] The insulating high-efficiency heat-conducting silicone grease provided in Example 1 includes the following components in parts by weight:

[0040] 55 parts of aluminum nitride with an average particle size of 10 μm, 25 parts of aluminum nitride with an average particle size of 5 μm, 20 parts of modified thermally conductive ceramic powder with an average particle size of 200 nm, and modified sheet-shaped graphene with an average particle size of 20 μm 0.5 parts, 4 parts of modified carbon fiber with an average particle size of 50 μm, 50 parts of liquid metal thermal paste, 10 parts of methyl silicone oil with a viscosity of 1000CP, 0.5 parts of dodecyltrimethoxysilane, and 1 part of antioxidant 1010.

[0041] By calculation, in the above components, the weight ratio of the liquid metal thermal paste to the composite spherical thermal conductive filler is 1:2; the weight ratio of the micron-sized spherical thermal conductive filler in the composite spherical thermal cond...

Embodiment 3

[0049] An insulating high-efficiency heat-conducting silicone grease provided in Example 3 includes the following components in parts by weight:

[0050] 75 parts of modified thermally conductive ceramic powder with an average particle size of 10 μm, 15 parts of modified thermally conductive ceramic powder with an average particle size of 5 μm, 10 parts of modified alumina powder with an average particle size of 100 nm, modified 0.5 parts of flake graphene, 5 parts of modified carbon fiber with an average particle size of 35 μm, 70 parts of liquid metal thermal paste, 8 parts of methyl silicone oil with a viscosity of 1000CP, 3 parts of vinyl silicone oil with a viscosity of 500CP, dodecyl 0.5 part of trimethoxysilane, 0.5 part of antioxidant 1076.

[0051] By calculation, in the above components, the weight ratio of the liquid metal thermal paste to the weight of the composite spherical thermal conductive filler is 1:1.43; the weight ratio of the weight of the micron-sized sp...

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Abstract

The invention discloses an insulated efficient heat-conducting silicone grease and a preparation method thereof. The heat-conducting silicone grease comprises the following components in parts by weight: 80-100 parts of a composite spherical heat-conducting filler, 0.5-5 parts of a one-dimensional structure heat-conducting material, 0.5-5 parts of a two-dimensional structure heat-conducting material, 20-100 parts of liquid metal heat-conducting paste, 4-20 parts of silicone oil, 0.25-2 parts of a silane coupling agent and 0.1-1 part of an antioxidant. Tiny gaps on the surface of a composite spherical heat-conducting filler are filled with the liquid metal heat-conducting paste; the contact thermal resistance among filler particles is effectively reduced, the good insulating property of theheat-conducting silicone grease can still be kept while the efficient heat-conducting property is obtained, and meanwhile, by adopting the efficient heat-conducting silicone grease, the problems thattraditional heat-conducting silicone grease is low in filling amount, poor in heat-conducting effect, prone to dry cracking and prone to oil seepage are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of heat-conducting silicone grease, and in particular relates to an insulating high-efficiency heat-conducting silicone grease and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of intelligent and automated industries, the integration of electronic components is getting higher and higher, and the heat generated during their work is getting higher and higher. Especially with the arrival of the 5G communication era, the thermal conductivity of traditional thermal grease Not high, the heat dissipation performance is not enough to meet the heat dissipation requirements of higher power and more complex environments. How to further improve the thermal conductivity of thermal grease has become a difficult problem for researchers; liquid metal thermal paste, which has been gradually developed in recent years, is a high-end thermal interface material. The ther...

Claims

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Application Information

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IPC IPC(8): C09K5/14C09K5/10
CPCC09K5/10C09K5/14
Inventor 刘志军孟鸿王飞刘继锋羊辉
Owner 广东陆祥新材料科技有限公司
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