采用乙烯基硅树脂与含氢硅油、四甲基四乙烯基环四硅氧烷在铂金催化剂的条件下进行加成反应,制得无色透明的有机硅电子绝缘灌封胶,并对有机硅灌封胶的各项性能进行测试和分析。结果表明:有机硅灌封胶的硬度可调,力学性能优异,透光率高达95%,具有很好的耐热性,在400℃时质量损失仅为0.5%,可作为透光率要求高的电子元器件的灌封材料。
A transparent pouring sealant was prepared by addition reaction from vinyl silicone resin, hydrogen-containing silicone liquid, and tetravinyl tetramethylcyelo tetrasiloxane under Pt catalyst, and its properties were tested and analyzed. The results show that the hardness of the silicone pouring sealant can be adjusted, and the transmittance is up to 95%. The silicone pouring sealant has excellent mechani-cal properties and thermal stability, and its mass loss is only 0.5% at 400℃, which can be used as a high transmittance pouring sealant for electronic component.
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