Photo-stabilization properties of transparent inorganic UV-filter/epoxy nanocomposites

被引：61

作者：

Li, Yuan-Qing

Yang, Yang

Fu, Shao-Yun ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Tech Phys & Chem, Beijing 100080, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing, Peoples R China

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2007年 / 67卷 / 15-16期

基金：

中国国家自然科学基金;

关键词：

photo-stabilization; inorganic UV-filter; transparent epoxy; nanocomposites;

D O I：

10.1016/j.compscitech.2007.03.010

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Transparent inorganic UV-filter/epoxy nanocomposites with high photo-stabilization properties were reported in this paper. First, inorganic UV-filter ZnO, core-shell structural silica-titania (S-T) and silica-titania-silica (S-T-S) nanoparticles were synthesized. Transparent inorganic UV-filter/epoxy (ZnO/epoxy, S-T/epoxy and S-T-S/epoxy) nanocomposites were subsequently prepared from the transparent epoxy and the as-prepared nanoparticles via in situ polymerization method. Optical properties of inorganic UV-filter/epoxy nanocomposites, namely visible light transparency and UV-light shielding efficiency, were studied using an UV-Vis spectrophotometer. The photo-stabilization properties of inorganic UV-filter/epoxy nanocomposites were examined by the light-emitting diode (LED) lifetime test. The results showed that the photo-stabilization effect of inorganic UV-filter on the lifetime of LED lamp obeys the following sequence: ZnO > S-T-S > S-T. Compared with the UV LED lamps encapsulated with pure epoxy, the lifetime of UV LED lamps encapsulated with ZnO/epoxy, S-T-S/epoxy and S-T/epoxy nanocomposites has been improved by 76%, 54% and 33%, respectively. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：3465 / 3471

页数：7

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