Application of silicone resin in LED packaging materials1
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At present, there are many patents on LED packaging materials, and phenyl packaging materials have the most research. A tetraphenylcyclotetrasiloxane and a vinyl double head are used as raw materials, and polymerized at 80 to 100 ° C. for 6 to 8 hours in the presence of a base catalyst to synthesize vinyl phenyl silicone oil; phenyltrimethoxysilane and containing Hydrogen double head is used as a raw material, reacted at 70-80 ° C for 3 h in the presence of hydrochloric acid, and then washed and distilled to obtain a hydrogen-containing phenyl resin. The vinyl phenyl silicone oil and the hydrogen-containing resin are cured for LED packaging materials. Refractive index (> 1.54), high light transmittance, good heat resistance and thermal shock stability.
