论文摘要
A series of co-polyimide（PI）fibers containing phenylphosphine oxide（PPO）group were synthesized by incorporating the bis（4-aminophenoxy）phenyl phosphine oxide（DAPOPPO）monomer into the PI molecular chain followed by dry-jet wet spinning.The effects of DAPOPPO molar content on the atomic oxygen（AO）resistance of the fibers were investigated systematically.When the AO fluence increased from 0to 3.2×1020the mass loss of the fibers showed the dependence on DAPOPPO molar content in co-PI fibers.The PI fiber containing 40%DAPOPPO showed lower mass loss compared to those containing 0%and 20%DAPOPPO.At higher AO fluence,the higher DAPOPPO content gave rise to dense carpet-like surface of fibers.XPS results indicated that the passivated phosphate layer was deposited on the fiber surface when exposed to AO,which effectively prevented fiber from AO erosion.With the DAPOPPO content increasing from 0%to 40%,the retentions of tensile strength and initial modulus for the fibers exhibited obvious growth from 44%to 68%,and 59%to 70%,after AO exposure with the fluence of 3.2×1020The excellent AO resistance benefits the fibers for application in low Earth orbit as flexible construction components.
论文目录
文章来源
类型: 期刊论文
作者: Yong Zhao,Hong Gao,Guo-Min Li,Fang-Fang Liu,Xue-Min Dai,Zhi-Xin Dong,Xue-Peng Qiu
来源: Chinese Journal of Polymer Science 2019年01期
年度: 2019
分类: 工程科技Ⅰ辑
专业: 有机化工
单位: Polymer Composites Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences,University of Chinese Academy of Sciences,China Academy of Space Technology
基金: financially supported by the National Basic Research Program of China (973 Program,Key Project: No. 2014CB643604)
分类号: TQ342
页码: 59-67+1-3
总页数: 12
文件大小: 2728K
下载量: 20
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