Heat conductive rubber for cooling flame retardant high-power LED and production method thereof

Abstract

The invention discloses heat conductive rubber for cooling a flame retardant high-power LED. The heat conductive rubber is prepared from, by weight, 1-12 parts of PVP, a proper amount of dichloromethane, a proper amount of DMF, 100-104 parts of 107 silicon rubber, 5-5.4 parts of dimethicone, 4.2-4.4 parts of tetraethoxysilane, 1-1.3 parts of dibutyltin dilaurate, 1.7-1.9 parts of a silane coupling agent kh-550, 170-190 parts of ethyl alcohol, 10-11 parts of fumed silica, 100-105 parts of 40-50 micrometer aluminum nitride, 20-21 parts of nanometer aluminum nitride, 1.8-2.3 parts of polysaccharide from semen raphani, 1.4-1.6 parts of octacosanol, 1.4-1.6 parts of zinc hydroxystannate and 1.2-1.4 parts of nanometer aluminum hydroxide. By using polysaccharide from semen raphani, zinc hydroxystannate and nanometer aluminum hydroxide, the flame retardance, tenacity and oxidation resistance of the rubber are improved, the service life is prolonged, and the heat conductivity is improved.

Description

technical field [0001] The invention relates to the technical field of LED heat dissipation rubber, in particular to a heat-conducting rubber for flame-retardant high-power LED heat dissipation and a production method thereof. Background technique [0002] As an excellent photoelectric device, LED ((LightEmittingDiode)) has the advantages of small size, low power consumption, long life, and environmental protection. It is expected to become a new generation of ideal general lighting sources in the next 10 to 20 years. With the development of LED to high light intensity and high power, its heat dissipation problem is becoming more and more prominent, which seriously affects the light output characteristics of LED and the life of the device, and has become a key problem that must be solved for high-power LED packaging. In this paper, aiming at the heat dissipation problem of LEDs, a thermal conductive silicone rubber that can be applied to high-power LEDs is selected and studi...

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Problems solved by technology

[0003] The thermal conductivity of the rubber prepared by using aluminum nitride in this paper is better, but it still cannot meet the needs of production, and the heat resistance, toughness, tensile properties, water resistance, gas barrier properties, corrosion resistance, wear resistance, Radiation resistance, thermal conductivity, acid and alkali resistance, flame retardancy, deformability, and oxidation resistance are still not good enough and need further improvement