以甲基乙烯基二甲氧基硅烷(MVDMS)、二苯基二甲氧基硅烷(DPS)和正丁醇锆为原料,异丙醇为反应介质,采用溶胶-凝胶法制得纳米ZrO2/乙烯基有机硅杂化树脂.然后在铂催化剂作用下,由乙烯基杂化树脂与苯基含氢硅油通过加成缩合,制得加成型纳米ZrO2/有机硅杂化涂层.研究了 ZrO2摩尔分数对涂层的光学性能和热稳定性能的影响.结果表明,所有涂层在可见光区的透过率均在99％以上；涂层的折射率随 ZrO2摩尔分数的变化在1．583~1．628内连续可调；涂层的热稳定性随着ZrO2摩尔分数的增加而降低.树脂的TEM显示ZrO2粒子均匀分散于杂化树脂中,粒径＜15 nm,无团聚现象.另外,LED 灯具的封装结果显示,以 ZrO2摩尔分数为30％的杂化树脂封装的LED出光效率可达125．1％.
Nano-ZrO2/vinyl silane hybrid resins were obtained via sol-gel condensation among dimethoxymethyl-vinylsilane(MVDMS),diphenyldimethoxysilane(DPS)and zirconium n-butoxide dispersed in isopropanol.And the synthesized nano-ZrO2/vinyl silane hybrid resins were thermally cured by hydrosilylation with phenyl hydro-silicone fluid in the presence of a Pt catalyst,addition type nano-ZrO2/silane hybrid films were synthe-sized.The effects of ZrO2 content on transmittance,refractive index and thermal stability of the films were studied.The results indicated that transmittance in visible range of all films was above 9 9%;refractive indices of the films were tunable between 1.583-1.628;TGA test showed that the thermal stability of the hybrid films de-creased with the ZrO2 content.And the zirconia with a particle size under 15 nm was uniformly dispersed in the silica resin without observable agglomerates as the TEM image exhibited.In addition,the LED encapsulation reslut showed that the light extraction efficiency can be increased to 125.1% with 30% mole content zirconia doped hybrids encapsulation.
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