High-thermal-conductivity gel composition with excellent weather resistance

Abstract

The invention discloses a high-thermal-conductivity gel composition with excellent weather resistance. The high-thermal-conductivity gel composition comprises 100 parts of vinyl silicone oil, 5-20 parts of a cross-linking agent, 0-10 parts of a chain extender, 0.1-1 part of an inhibitor, 0.05-1 part of a catalyst, 2-10 parts of a coupling agent and 2000-3000 parts of thermal conductive powder. According to the invention, spherical heat-conducting powder with different particle sizes are compounded to endow heat-conducting gel with high heat conductivity; the cross-linking agent and the chain extender are matched for use to endow the heat-conducting gel with cross-linking density, and angular heat-conducting powder is added into the spherical heat-conducting powder, so that the sliding andcracking phenomena of the heat-conducting gel under high and low temperature impact are greatly improved while the heat conductivity coefficient is increased, the heat-conducting gel is endowed with excellent weather resistance, and the aging reliability and product competitiveness of the heat-conducting gel are improved.

Description

technical field [0001] The invention belongs to the technical field of thermally conductive materials, and in particular relates to a high thermally conductive gel composition with excellent weather resistance. Background technique [0002] With the development of the electronic and electrical industry, higher requirements have been placed on the heat dissipation performance of electronic components, and thermal interface materials are playing an increasingly important role. At present, the commonly used thermal interface materials are mainly thermal conductive silicone grease, thermal conductive silicone gasket, thermal conductive gel, etc., among which thermal conductive gel has attracted much attention as a new type of thermal interface material. Compared with thermally conductive silicone grease, thermally conductive gel can avoid solid-liquid separation and eventually dry out through its own vulcanization; compared with thermally conductive silicone sheets, thermally co...

AI Technical Summary

Problems solved by technology

[0003] However, when the thermal conductive gel is filled in a large gap of more than 1mm, it is prone to slip and cannot be kept in the original position, especially when the heater is placed perpendicular to the surface of the heat dissipation device, it is easier to slip, and the alternation of cold and heat and vibration of the environment will make the The thermally conductive gel slides along the vertical direction and leaves its original position, resulting in the failure of the heat transfer function, causing the temperature of the heating device to rise and shorten the life

Currently, there is no practical solution to this problem

Images