纺织工程学报2026，Vol.4Issue(1)：54-62,96,10.DOI:10.3969/j.issn.2095-4131.2026.01.004
二氧化钛涂覆PBO/CNT气凝胶纤维的制备及其抗紫外老化性能研究
Preparation of titanium dioxide-coated PBO/CNT aerogel fi-bers and investigation of their UV aging resistance
摘要
Abstract
To address the critical issue of photodegradation of poly(p-phenylene benzobisoxazole)(PBO)fibers under ultraviolet exposure,a titanium dioxide(TiO2)nanocoating was constructed on the surface of PBO/carbon nanotube(CNT)aerogel fibers via a dip-coating method,fabricating TiO2@PBO/CNT composite fibers.The effects of different TiO2 concentrations(10%-30%)on fiber structure,mechanical properties,and UV aging behavior were systematically in-vestigated.The results indicate that a 20%TiO2 coating forms a uniform,dense anatase-phase nanostructure.After 288 h of UV irradiation,the tensile strength retention rate of the fibers reached 79.39%,representing a 16.57%improvement over uncoated fibers.This coating significantly suppresses the photo-oxidative degradation of PBO molecular chains through a dual reflection-absorption mechanism of UV,providing a novel strategy for designing high-performance UV-resistant aerogel fibers.关键词
聚对苯撑苯并二噁唑/二氧化钛/气凝胶纤维/耐紫外/表面改性Key words
poly(p-phenylene benzobisoxazole)(PBO)/TiO2/aerogel fibers/UV resistance/surface modification分类
化学化工引用本文复制引用
丁菁,侯成义..二氧化钛涂覆PBO/CNT气凝胶纤维的制备及其抗紫外老化性能研究[J].纺织工程学报,2026,4(1):54-62,96,10.基金项目
上海市松江区产学研合作研究资助项目(SJCXY2024-01) （SJCXY2024-01）
