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A novel structural polyimide material with synergistic phosphorus and POSS for atomic oxygen resistance

机译：一种具有协同磷的新型结构聚酰亚胺材料和用于原子抗抗性的磷

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摘要

A series of novel structural phosphorus-containing polyimide-polyhedral oligomeric silsesquioxane (POSS) nanocomposites with varying phosphorus contents were synthesized. The nanocomposites displayed outstanding thermal properties. The glass transition temperature was increased to 294.87 degrees C when the phosphorus content was 1.61 wt% and the anti-degradation properties were also obviously enhanced. Moreover, the nanocomposites presented much higher atomic oxygen (AO) durability compared with pure polyimide because of the incorporation of special functional groups of phosphorus oxide and POSS. The AO erosion yields decreased to 51.9% of pure polyimide-POSS nanocomposites when the phosphorus content was increased to 1.61 wt%. Furthermore, the mechanism of phosphorus and POSS synergistic AO resistance was explored via XPS and SEM. Three kinds of silicon particles with different binding energies and two kinds of phosphorus elements with different binding energies were formed because of AO exposure and the phosphorus and POSS synergy. Highly effective self-passivating layers were formed to protect the underlying material from AO attack.
机译：合成了一系列新型结构磷的聚酰亚胺 - 多面体低聚硅氧烷（POSS）纳米复合材料，具有不同的磷含量。纳米复合材料显示出优异的热性能。当磷含量为1.61wt％时，玻璃化转变温度升至294.87℃，并且显着增强了抗降解性能。此外，与纯聚酰亚胺相比，纳米复合材料呈现了更高的原子氧（AO）耐久性，因为掺入了磷氧化物的特殊官能团。当磷含量增加到1.61wt％时，AO侵蚀产率降低至纯聚酰亚胺-PORS纳米复合材料的51.9％。此外，通过XPS和SEM探索了磷和容易协同Ao电阻的机理。由于AO暴露和磷和POSS协同作用，形成三种具有不同结合能量的硅颗粒和具有不同结合能量的两种磷元素。形成高效的自钝化层以保护底层材料免受AO攻击。

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  • 来源
    《RSC Advances》 |2015年第16期|共9页
  • 作者

    Song Guanghe; Li Xuesong; Jiang Qiyang; Mu Jianxin; Jiang Zhenhua;

  • 作者单位

    Jilin Univ Minist Educ Key Lab High Performance Plast Coll Chem Changchun 130012 Peoples R China;

    Jilin Univ Minist Educ Key Lab High Performance Plast Coll Chem Changchun 130012 Peoples R China;

    Jilin Univ Minist Educ Key Lab High Performance Plast Coll Chem Changchun 130012 Peoples R China;

    Jilin Univ Minist Educ Key Lab High Performance Plast Coll Chem Changchun 130012 Peoples R China;

    Jilin Univ Minist Educ Key Lab High Performance Plast Coll Chem Changchun 130012 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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