应用化学2026，Vol.43Issue(1)：31-40,10.DOI:10.19894/j.issn.1000-0518.250292
耐原子氧聚酰亚胺复合纤维的制备与性能
Preparation and Atomic Oxygen-Resistant Properties of Quaternary Ammonium Salt Modified Polyhedral Oligomeric Silsesquioxane/Polyimide Composite Fibers
摘要
Abstract
Herein,polyhedral oligomeric silsesquioxane(POSS)nanoparticles were modified by quaternary ammonium,followed by adding into polyamic acid(PAA)spinning solution.Then series of QA-POSS/PI composite fibers were afforded via wet-spinning process.The as-prepared composite fibers showed good thermal properties with 5％thermal decomposition temperature(T5％)and glass transition temperature(Tg)values of 558℃ and 395℃.Based on X-ray photoelectron spectroscopy(XPS)and inductively coupled plasma(ICP)measurement results,the silicon contents on fiber surface were higher than those in total fiber,which indicated that silicon showed gradient distribution in composite fibers.When additive amount of QA-POSS nanoparticles was raised from 0％to 15％,the surface topographies of composite fibers displayed a clear change from roughness to compact,and mass loss decreased obviously from 1.40 mg/cm2 to 0.10 mg/cm2 after AO erosion with the fluence of 3.17×1020 atoms/cm2.Actually,the lowest loss of mechanical properties was seen for the composite fibers when 5％QA-POSS particles were added.Fracture strength and initial modulus retentions of the fibers were 89.36％and 89.35％,respectively.And the corresponding decay rate of the strength was seen as 1.58×10-13 Pa·cm2/atom.关键词
聚酰亚胺纤维/笼型聚倍半硅氧烷/耐原子氧Key words
Polyimide fibers/Polyhedral oligomeric silsesquioxanes/Anti-atomic oxygen分类
化学化工引用本文复制引用
刘芳芳,姚海波,李国民,王立朋,董志鑫,邱雪鹏..耐原子氧聚酰亚胺复合纤维的制备与性能[J].应用化学,2026,43(1):31-40,10.基金项目
国家重点研发计划(No.2023YFB3811901)、中国科学院重点部署项目(No.ZDBS-ZRKJZ-TLC020)、中国科学院青年创新促进会(No.Y2023064)、吉林省优秀青年科技人才项目(No.20230508113RC)、天津市科技计划项目(No.23YFYSHZ00230)和吉林省青年成长科技计划项目(No.20240602121RC)资助 Supported by the National Key Research and Development Program of China(No.2023YFB3811901),the Key Program of the Chinese Academy of Sciences(No.ZDBS-ZRKJZ-TLC020),the Youth Innovation Promotion Association of CAS(No.Y2023064),Jilin Province Outstanding Young Scientist Program(No.20230508113RC),the Science and Technology Program of Tianjin(No.23YFYSHZ00230)and Jilin Province Youth Development Project(No.20240602121RC) （No.2023YFB3811901）
