聚芳酯类热致液晶聚合物的研究进展

Research progress of polyarylate thermotropic liquid crystal polymers

热致液晶聚芳酯(Thermotropic Liquid Crystalline Polyarylate,TLCP)是一类重要的热致液晶聚合物,具有优异的力学性能、良好的热稳定性、稳定的介电性能和灵活的可加工性等诸多优点。随着绿色化学和信息化时代的到来,TLCP将占据越来越广阔的市场。本文从聚合物制备、结构与性能以及工程应用的角度简要总结了TLCP的近期研究进展。首先,介绍了TLCP的合成方法,并针对TLCP在加工过程中出现的熔融温度高、熔体黏度大等缺点,从分子设计的角度详细讨论了主要的优化策略。其次,介绍了一些代表性的商品化TLCP,进一步从薄膜和纤维两类应用形态阐述了TLCP的加工工艺。最后,简要介绍了这类材料的主要应用领域。

Thermotropic liquid crystalline polyarylate(TLCP)is an essential type of thermotropic liquid crystal polymers which exhibit excellent mechanical properties,good thermal stability,stable dielectric properties and flexibility in processing.With the advent of information age and ever-growing demand for green chemistry,TLCP will occupy an increasingly broad market.From the perspective of polymer synthesis,structure and performances,engineering applications,this review summarizes the recent research progress of TLCP.To begin,the TLCP synthesis methods are described.From the standpoint of molecular design,the primary optimization solutions are described in detail in relation to the disadvantages of TLCP during processing,such as high melt temperature and high melt viscosity.Second,some commercialized TLCPs are introduced,further both the film and fiber variants of TLCP processing are covered.Finally,the main application areas of TLCP are briefly discussed.