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由端氨丙基聚二甲基硅氧烷(PDMS)、均苯四甲酸二酐(PMDA)和4,4′-二氨基二苯醚(ODA)在N,N′-二甲基乙酰胺(DMAc)中共聚,热亚胺化法制备一系列有机硅改性聚酰亚胺复合材料。通过傅里叶变换红外吸收光谱仪(FTIR)、X射线光电子能谱(XPS)分析材料的化学结构,采用扫描电子显微镜(SEM)观察材料的表观形貌,利用地面原子氧(AO)模拟设备研究了该复合膜的抗原子氧性能。结果表明,有机硅改性聚酰亚胺复合膜在AO累积通量达到2.06×1020atom/cm2时,复合膜的AO剥蚀率可以达到6.69×10-25cm3/atom,约是纯聚酰亚胺薄膜抗原子氧性能的4.5倍。
Amino-terminated polydimethylsiloxane (PDMS), pyromellitic dianhydride (PMDA) and 4,4’-oxydianiline (ODA) (DMAc) copolymerization, thermal imidization method to prepare a series of silicone-modified polyimide composites. The chemical structure of the material was analyzed by Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The apparent morphology of the material was observed by scanning electron microscopy (SEM) The anti-proton oxygen performance of the composite membrane was studied. The results show that the AO erosion rate of the composite film can reach 6.69 × 10-25cm3 / atom when the AO cumulative flux reaches 2.06 × 1020atom / cm2, which is about pure polyimide film Antioxidant oxygen performance of 4.5 times.