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首页> 外文期刊>Polymers for advanced technologies >Preparation of ZrO 22 /silicone hybrid materials for LED encapsulation via in situ sol‐gel reaction
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Preparation of ZrO 22 /silicone hybrid materials for LED encapsulation via in situ sol‐gel reaction

机译：Zro的制备 2 2 /硅氧烷混合材料通过原位溶胶 - 凝胶反应进行LED封装

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> Organic silicones have been used as encapsulant materials for light‐emitting diodes (LEDs) for many years, while their performances need to be improved in order to satisfy the requirements of high‐power LEDs. A ZrO 2 /silicone hybrid resin (ZHR) was synthesized for LEDs encapsulation by in situ sol‐gel reactions. The oligosiloxane was synthesized as polymeric matrix by nonaqueous sol‐gel condensation using diphenylsilanediol (DPSD), vinyltrimethoxysilane (VTMS), and 3‐methacryloxy propyl trimethoxysilane (MPTMS) as monomers. Then zirconium propoxide was added into this polymeric matrix to be hydrolyzed to obtain the hybrid resin with a uniform dispersion of ZrO 2 nanoparticles. The Si–O–Zr covalent bond was detected and benefited for excellent dispersibility of the ZrO 2 nanoparticles and the well compatibility between organic and inorganic phases. The cured ZHR with 5?wt% ZrO 2 content showed high light transmittance (greater than 80% in visible light range), high refractive index (=1.56), and high thermal stability (no yellowing at 150°C for 240?hours). The luminous flux of the LED chip with ZHR encapsulant was 10% higher than that of the pure silicone resin, suggesting that ZHR has great application potential in the field of LED packaging.
机译： > 有机硅氧烷已被用作发光二极管（LED）的密封剂材料多年，而需要改进其性能以满足高功率LED的要求。一个Zro. 2 /硅氧烷杂化树脂（ZHR）通过原位溶胶 - 凝胶反应合成LED封装。通过使用二苯基硅二醇（DPSD），乙烯基三甲氧基硅烷（VTMS）和3-甲基丙烯酰氧基丙基三甲氧基硅烷（MPTM）作为单体，通过非水溶胶 - 凝胶缩合合成寡核基质。然后将锆丙醇氧化锆加入到该聚合物基质中以水解以获得具有均匀分散的Zro的杂化树脂 2 纳米粒子。检测到Si-O-Zr共价键并利益用于Zro的优异的分散性 2 纳米粒子和有机物和无机相之间的孔相形。固化的zhr用5？wt％zro 2 含量显示出高透光率（在可见光范围内大于80％），高折射率（= 1.56），热稳定性高（150℃下的240°C的黄色）。具有ZhR密封剂的LED芯片的光通量高于纯硅树脂的10％，表明ZhR在LED包装领域具有很大的应用潜力。

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