Organosilicon lens material for power type light-emitting diode (LED) packaging
A technology of LED packaging and lens materials, applied in electrical components, circuits, semiconductor devices, etc., can solve the problems of poor adhesion of PPA substrates, change material properties, strong mechanical strength, etc., to achieve good adhesion, high hardness, Strength-enhancing effect
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Embodiment 1
[0031] Weigh 19.8g (0.1mol) phenyltrimethoxysilane, 22.0g (0.2mol) dimethyldimethoxysilane and 34.4 (0.2mol) methylphenyldimethoxysilane, mix them uniformly, Pour it into a 250ml four-neck flask equipped with cooling, stirring and heating devices; then slowly add 19.8g of PH=1 aqueous hydrochloric acid solution dropwise at 50°C, and continue the reaction for 2-3h after the addition; finally, separate the reaction product, Wash with water until neutral, and obtain 38.5 g of colorless and transparent silicone resin through distillation under reduced pressure, with a yield of 92.9%.
Embodiment 2
[0033] Weigh 17.8g (0.1mol) methyltrichlorosilane, 42.3g (0.2mol) phenyltrichlorosilane and 38.2 (0.2mol) methylphenyldimethoxysilane, mix them uniformly, pour into Put in a 250ml four-necked flask with cooling, stirring and heating equipment; then slowly add 23.4g of PH=1 aqueous hydrochloric acid solution dropwise at 50°C, and continue the reaction for 2-3h after the addition; finally, separate the reaction product and wash it with water until neutral , 54.7 g of colorless and transparent silicone resin was obtained by distillation under reduced pressure, and the yield was 94.8%.
Embodiment 3
[0035] 50.4g (0.4mol) allyl glycidyl ether and 24gD 4 H Dissolve in 75g of toluene, add to a 250ml four-neck flask with cooling, stirring and heating devices; then add 0.08g of Karstedt catalyst, react at 70°C for 3-4h, then keep warm at 90°C for 1-2h; wait until the reaction is complete Afterwards, vacuum distillation was carried out to remove unreacted monomers and low boilers to obtain 70.3 g of colorless and transparent epoxy-modified silicone with a yield of 94.1%.
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