Abstrat

Polymer dispersed liquid crystal (PDLC) films have been extensively studied for their ability to control the attitude of aircraft by varying the reflectivity of solar sails. However, most of the polymeric matrix of PDLC films are based on polyacrylates, which comprehensive properties such as thermal stability, chemical stability, mechanical strength and radiation resistance can not meet the requirements of the harsh environment in space. In order to improve the radiation resistance of PDLC films, polyimide-epoxy resin PDLC films were prepared by thermal polymerization using Kapton polyimide film as conductive film and two kinds of epoxy resin as monomer in this paper. The electro-optic properties of PDLC films prepared by flexible chain and rigid chain epoxy resin monomers in different ratios were studied and the microscopic morphology of the polymer network of the polyimide PDLC films was observed by scanning electron microscopy (SEM) and the relationship between them was studied.

抽象

聚合物分散液晶 (PDLC) 薄膜因其通过改变太阳帆的反射率来控制飞机姿态的能力而被广泛研究。然而，PDLC薄膜的聚合物基体大多以聚丙烯酸酯为基础，其热稳定性、化学稳定性、机械强度和抗辐射等综合性能不能满足太空恶劣环境的要求。为了提高PDLC薄膜的耐辐射性，本文以Kapton聚酰亚胺薄膜为导电薄膜，以两种环氧树脂为单体，通过热聚合制备聚酰亚胺-环氧树脂PDLC薄膜。