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Silk-screen printing heat-conducting silicon grease and preparation method thereof

A technology of thermal conductive silicone grease and silk screen printing, which is applied in the field of silicone grease, can solve the problems of complex process and high cost of raw materials, and achieve the effect of simple process, good fluidity and low production cost

Inactive Publication Date: 2019-02-19
睿高达(东莞)材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Zl 201710825199.5 discloses a thermally conductive silicone grease composition with high thermal conductivity and low viscosity and its preparation method. The thermal conductivity and fluidity of the silicone grease composition are improved, but the process is complicated and the cost of raw materials is high

Method used

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  • Silk-screen printing heat-conducting silicon grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of silk screen thermal conductive silicone grease, comprising the following raw materials in parts by weight,

[0039] 5 parts of polyether modified simethicone oil;

[0040] 100 parts of thermally conductive filler;

[0041] The thermally conductive filler is a mixture of silane coupling agent-modified spherical alumina powder and silane coupling agent-modified zinc oxide powder in a weight ratio of 3:1.

[0042]Further, the silane coupling agent modified spherical alumina powder and silane coupling agent modified zinc oxide powder are made by the following method: (a) adding spherical alumina powder and silane coupling agent to the In water and ethanol, prepare ethanol solution, stir and react at room temperature and normal pressure for 60 minutes, wherein the stirring speed is 40 rpm; (b) bake the reaction solution in step (a) at 80°C for 60 minutes to obtain silane Coupling agent modified spherical alumina powder; (c) adding zinc oxide powder and silane cou...

Embodiment 2

[0052] A kind of silk screen thermal conductive silicone grease, comprising the following raw materials in parts by weight,

[0053] 20 parts of polyether modified simethicone oil;

[0054] Thermally conductive filler 1000 parts;

[0055] The thermally conductive filler is a mixture of silane coupling agent-modified spherical alumina powder and silane coupling agent-modified zinc oxide powder in a weight ratio of 6:1.

[0056] Further, the silane coupling agent modified spherical alumina powder and silane coupling agent modified zinc oxide powder are made by the following method: (a) adding spherical alumina powder and silane coupling agent to the In water and ethanol, prepare ethanol solution, stir and react at room temperature and normal pressure for 60 minutes, wherein the stirring speed is 60 rpm; (b) bake the reaction solution in step (a) at 120°C for 30 minutes to obtain silane Coupling agent modified spherical alumina powder; (c) adding zinc oxide powder and silane co...

Embodiment 3

[0067] A kind of silk screen thermal conductive silicone grease, comprising the following raw materials in parts by weight,

[0068] 20 parts of polyether modified simethicone oil;

[0069] 500 parts of thermally conductive filler;

[0070] The thermally conductive filler is a mixture of silane coupling agent-modified spherical alumina powder and silane coupling agent-modified zinc oxide powder in a weight ratio of 8:1.

[0071] Further, the silane coupling agent modified spherical alumina powder and silane coupling agent modified zinc oxide powder are made by the following method: (a) adding spherical alumina powder and silane coupling agent to the In water and ethanol, prepare ethanol solution, stir and react at room temperature and normal pressure for 60min, wherein the stirring speed is 60rpm; (b) bake the reaction solution in step (a) at 100°C for 40min to obtain silane Coupling agent modified spherical alumina powder; (c) adding zinc oxide powder and silane coupling ag...

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Abstract

The invention belongs to the technical field of silicon grease and particularly relates to silk-screen printing heat-conducting silicon grease and a preparation method thereof. The silk-screen printing heat-conducting silicon grease is prepared from polyether modified simethicone and heat-conducting filler, and the heat-conducting filler is a mixture of silane coupling agent modified spherical aluminum oxide powder and silane coupling agent modified zinc oxide powder according to a weight ratio of (3-8):1. The silk-screen printing heat-conducting silicon grease prepared according to the methodhas advantages of high heat conductivity, low viscosity and low cost. By simplification and adjustment on the basis of a traditional process, procedures of high-temperature powder kneading treatmentand three-roller grinding in the traditional production process are cancelled, and accordingly electric energy consumption in heating is reduced, production efficiency is improved while product performances are guaranteed, and production cost is reduced. In addition, by control of heat-conducting filler adding sequence, great anti-settling effects are achieved, and the uniformity and heat conductivity of the prepared silk-screen printing heat-conducting silicon grease are improved.

Description

technical field [0001] The invention belongs to the technical field of silicone grease, and in particular relates to a screen-printing heat-conducting silicone grease and a preparation method thereof. Background technique [0002] Thermally conductive silicone grease is a kind of caulking or coating material synthesized by a special process with organosiloxane as the base material and metal and non-metal simple substance or oxide as the filling material, which plays the role of heat conduction. There are many types of thermal grease on the market, covering different thermal conductivity (generally 1W-10W), color appearance, and viscous state. It is mainly used to fill the contact gap between the heat source and the contact surface of the heat sink, transfer heat, and reduce the temperature of the heat source components. At the same time, thermal conductive silicone grease has good insulation, long-term moist paste, good high and low temperature aging resistance, etc. It is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/12C08K9/06C08K7/18C08K3/22C09K5/14
CPCC08K3/22C08K7/18C08K9/06C08K2003/2296C09K5/14C08L83/12
Inventor 黄泽任马志求钟欣
Owner 睿高达(东莞)材料科技有限公司
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