固体火箭技术Issue(3)：378-383,392,7.
PBO纤维的紫外光老化及防老化研究
Study on the photolysis and stabilization of PBO fiber
摘要
Abstract
The photolysis of PBO fibers exposed to UV light was investigated. The attempts to improve aging resistance of PBO fiber were investigated. It is first time to find that the photolysis of PBO fibers includes two development stages: one could be defined as the physical degradation stage and the other could be defined as the chemical degradation stage. In the physical degradation stage, the main features present that the defects appear on the cortex of fiber, which result in the slow decrease of tensile strength. The chemical degradation stage mainly behaves as chain scission of PBO molecule, which results in the serious damage of fiber surface and sharp reduce of tensile strength. Attempts to improve photo stabilization of PBO fibers, such as improving structure of fiber, coating gel particles on the surface of fiber and using anti-aging agent, were done so that the photo stability of PBO fibers could be improved to some extent by using these methods.关键词
PBO纤维/光降解/老化行为/光稳定性/耐老化Key words
PBO fiber/photolysis/aging behavior/photo stability/aging resistance分类
通用工业技术引用本文复制引用
宋波,傅倩,刘小云,庄启昕,韩哲文..PBO纤维的紫外光老化及防老化研究[J].固体火箭技术,2011,(3):378-383,392,7.基金项目
国家自然科学基金项目(50703010和50973028) （50703010和50973028）
