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High heat conducting insulating silicon grease and its manufacturing method

A heat-conducting silicone grease and high-insulation technology, which is applied in the direction of organic insulators, inorganic insulators, chemical instruments and methods, etc., can solve the problems of poor product performance and low thermal conductivity of heat-conducting silicone grease, and achieve excellent thermal conductivity and prolong service life , other excellent effects

Inactive Publication Date: 2004-10-06
珠海粤科京华电子陶瓷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thermal conductivity of the thermal grease prepared by this method is relatively low, generally only 0.6-0.9W / m.k, and the product performance is relatively poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0018] The invention is based on a unique mixed aluminum nitride powder with different average particle sizes, high thermal conductivity and high insulation properties as filler. After mixing, the aluminum nitride filler is added to the silicone oil, mixed evenly by ball milling and passed through After vacuum stirring and degassing, a homogeneous gray paste was prepared, and in the paste, the volume percentage of methyl silicone oil was 30%.

[0019] The average particle size of the mixed aluminum nitride powder filler is at least two kinds, the large particle is 12 μm, the volume percentage is 35%, the balance is small particles, and the average particle size is 1.5 μm.

Embodiment approach 2

[0021] Others are the same as in Embodiment 1. When the average particle size of the mixed aluminum nitride powder filler is three types, the average size between large and small particles can be selected, for example, 4 μm.

Embodiment approach 3

[0023] Others are the same as Embodiment 1, but in the paste, the volume percentage of methyl silicone oil is 60%.

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Abstract

An insulating silicon cream with high heat conductivity is prepared from the mixed aluminium nitride particles which high heat conductivity (3.0 W / m.k) and high insulating property and methyl silica oil through proportionally mixing, ball grinding, vacuum stirring and removing air. Said mixed aluminium nitride particles is composed of big particles (12 microns) and small particles (1.5 microns).

Description

technical field [0001] The invention relates to a high thermal conductivity insulating silicone grease and a manufacturing method thereof, belonging to the technical field of new materials. Background technique [0002] Effectively removing the heat generated by electronic equipment is related to the reliability and life of the product. At present, electronic products are in the trend of densification and miniaturization, and at the same time, higher requirements are put forward for heat dissipation or heat conduction and insulation. On the other hand, the application of heat-conducting insulating silicone grease can transfer the heat generated by components, especially high-power devices, to the surrounding environment through the radiator, thereby improving the development of densification and miniaturization of power electronic products. Therefore, thermally conductive insulating silicone grease is widely used in aerospace, aviation, communication, and power electronics ...

Claims

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Application Information

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IPC IPC(8): C09K5/00H01B3/02H01B3/46
Inventor 周和平吴崇隽党桂彬刘志辉
Owner 珠海粤科京华电子陶瓷有限公司
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