A study on resistance to ultraviolet radiation of POSS-TiO2/epoxy nanocomposites

被引：25
作者：
Peng, Dequn [1 ]
Qin, Wei [2 ]
Wu, Xiaohong [1 ]
机构：
[1] Harbin Inst Technol, Dept Chem, Harbin 150001, Heilongjiang, Peoples R China
[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China
来源：
ACTA ASTRONAUTICA | 2015年 / 111卷
基金：
中国国家自然科学基金;
关键词：
UV radiation; POSS-TiO2; hybrid; Polymer nanocomposites; Bend strength;
D O I：
10.1016/j.actaastro.2015.02.004
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
Ultraviolet (IN) radiation is a severe space environmental factor, which is harmful to the durability of the polymeric materials of the spacecraft For this reason, a novel POSS-TiO2/EP nanocomposite was synthesized by incorporating the POSS-TiO2 organic-inorganic hybrid into the epoxy (EP) resin. The effects of IN radiation on EP resin. and on POSS-TiO2/EP nanocomposites were investigated in a ground-based simulator that simulates space radiation conditions. Compared with EP resin, the value of bend strength for 5.0 wt% POSS-TiO2/EP varied in a small range before and after UV radiation. Meanwhile, a-typical tough feature was observed from the SEM photo for POSS-TiO2/EP nanocomposite after UV exposure. This result indicated that the POSS-TiO2/EP exhibited the excellent properties of anti-space ultraviolet radiation. The thermo gravimetric (TG) results showed that the addition of PUSS-TiO2 improved the thermal-stability of EP resin matrix. The synthesized nanocomposites in this work could be used in the satellites to enhance their adaptability to the space environment and extend their service life. (C) 2015 Published by Elsevier Ltd. on behalf of IAA.
引用
收藏
页码：84 / 88
页数：5
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