Abstract

The properties of nanocomposites based on heat-resistant organosoluble copolyimide are studied. The nanocomposites are obtained by the sol−gel technique; nanoparticle formation occurs in situ in the polymer-matrix bulk. Metalloalkoxysiloxanes, namely tetrakis-(methyldiethoxysiloxy)hafnium and pentakis-(methyldiethoxysiloxy)niobium, are used as precursors of the filler phase. It is shown that the in-situ filling of copolyimide contributes to an increase in the order of material resistance to the effects of an atomic oxygen flow, reducing surface degradation during irradiation in comparison with an unfilled matrix.

中文翻译：

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氧等离子流对聚酰亚胺纳米复合材料的影响

摘要

研究了基于耐热有机可溶性共聚酰亚胺的纳米复合材料的性能。纳米复合材料是通过溶胶-凝胶技术获得的。纳米颗粒的形成原位发生在聚合物基体中。金属烷氧基硅氧烷，即四（-甲基二乙氧基甲硅烷氧基）ha和五-（甲基二乙氧基甲硅烷氧基）铌用作填充相的前体。结果表明，与未填充的基质相比，原位填充共聚酰亚胺有助于增加材料对原子氧流影响的抵抗力的顺序，从而减少辐射过程中的表面降解。