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Cycloaliphatic epoxy oligosiloxane-derived hybrid materials for a high-refractive index LED encapsulant

机译:用于高折射率LED密封剂的脂环族环氧低聚硅氧烷杂化材料

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摘要

Cycloaliphatic epoxy oligosiloxane resins with a high degree of condensation (>85%) were synthesized by a nonhydrolytic sol-gel reaction using 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane (ECTS), diphenylsilanediol (DPSD), and triphenylsilanol (TPS). Cycloaliphatic epoxy hybrimers with 2 mm thickness fabricated by thermal curing of cycloaliphatic epoxy oligosiloxane resins with a hardener and catalyst were optically transparent (~90%) with a high refractive index of up to 1.583. The fabricated hybrimers also show high thermal resistance having no yellowing during thermal aging at 120°C for 1008 h and a high decomposition temperature (>300°C). On the strengths of these characteristics, the hybrimers are expected to find application as LED encapsulants.
机译:使用2-(3,4-环氧环己基)乙基三甲氧基硅烷(ECTS),二苯基硅烷二醇(DPSD)和三苯基硅烷醇(TPS)通过非水解溶胶-凝胶反应合成了高缩合度(> 85%)的脂环族环氧低聚硅氧烷树脂。通过用固化剂和催化剂对脂环族环氧低聚硅氧烷树脂进行热固化而制得的厚度为2 mm的脂环族环氧氢化物是光学透明的(〜90%),折射率高达1.583。制成的混合动力轮胎还显示出高耐热性,并且在120°C的温度下进行1008小时的热老化过程中没有泛黄,并且分解温度高(> 300°C)。凭借这些特性的优势,预计混合动力车将用作LED密封剂。

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