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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[0030] Example 1
[0031] Weigh out 19.8g (0.1mol) phenyltrimethoxysilane, 22.0g (0.2mol) dimethyldimethoxysilane and 34.4 (0.2mol) methylphenyldimethoxysilane and mix them evenly. Pour into a 250ml four-necked flask equipped with cooling, stirring and heating devices; then slowly add 19.8g PH=1 aqueous hydrochloric acid solution at 50℃, and continue the reaction for 2-3h after the dropwise addition; finally, the reaction product is separated, After washing with water to neutrality, 38.5 g of colorless and transparent silicone resin was obtained by distillation under reduced pressure, with a yield of 92.9%.
Example Embodiment
[0032] Example 2
[0033] Weigh 17.8g (0.1mol) methyltrichlorosilane, 42.3g (0.2mol) phenyltrichlorosilane and 38.2 (0.2mol) methylphenyldimethoxysilane, mix them evenly, pour into Cooling, stirring and heating device in a 250ml four-necked flask; then slowly add 23.4g PH=1 hydrochloric acid aqueous solution at 50℃, and continue the reaction for 2-3h after the dropwise addition; finally the reaction product is separated and washed to neutrality After distillation under reduced pressure, 54.7 g of colorless and transparent silicone resin was obtained, and the yield was 94.8%.
Example Embodiment
[0034] Example 3
[0035] Combine 50.4g (0.4mol) allyl glycidyl ether with 24gD 4 H Dissolve in 75g of toluene, add to a 250ml four-necked flask equipped with cooling, stirring and heating devices; then add 0.08g of Karstedt catalyst, react at 70℃ for 3-4h, and then keep at 90℃ for 1-2h; wait until the reaction is complete Afterwards, under reduced pressure distillation was performed 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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