长碳链聚酰胺基热塑性弹性体研究进展

发布时间：2018-07-06 09:03

  本文选题：长碳链聚酰胺 + 热塑性弹性体　； 参考：《高分子通报》2016年09期

【摘要】：长碳链聚酰胺基热塑性弹性体(LCPAE)是一种高性能热塑性弹性体,它是由长碳链聚酰胺(LCPA)硬段以及聚醚软段构成的一种嵌段共聚物,通过调节聚酰胺硬段以及聚醚软段的分子量以及相对含量,可以获得一系列的嵌段共聚物,邵氏硬度从25D到70D。由于两种链段在热力学上互不相容,使得该类弹性体具有微相分离的聚集态结构,同时具备LCPA树脂耐磨、强度高、热稳定性好、加工性好以及聚醚材料的低温柔软性、回弹性高等诸多优点。本文综述了1970年以来LCPAE的发展历程、市场现状、国内外研究进展以及相关专利分析,并简要总结了借助原位X射线衍射技术研究LCPAE微观结构与性能的部分进展,其在单轴拉伸外场作用下的聚集态结构演化对于理解其结构性能关系、指导分子结构设计有着重要意义。本文还简要介绍了本实验室使用具有自主知识产权的长碳链聚酰胺PA1012原料设计合成系列LCPAE的工作。文章最后结合已有研究进展,对LCPAE面临的重要科学问题以及产学研协作实现国产化所需解决的实际问题进行了总结与展望。
[Abstract]:Long chain polyamide based thermoplastic elastomer (LCPAE) is a kind of high performance thermoplastic elastomer. It is a block copolymer composed of long chain polyamide (LCPA) hard segment and polyether soft segment. A series of block copolymers can be obtained by adjusting the molecular weight and relative content of hard and soft segments of polyamide and polyether. The hardness of the block copolymers ranges from 25D to 70D. Due to the thermodynamics incompatibility of the two segments, the elastomer has a microphase separated aggregate structure, a high wear resistance, high strength, good thermal stability, good processability and low temperature softness of the polyether material. High resilience and many other advantages. This paper reviews the development of LCPAE since 1970, market status, domestic and international research progress and related patent analysis, and briefly summarizes some progress in studying the microstructure and properties of LCPAE by means of in situ X-ray diffraction technique. The evolution of the aggregate structure under uniaxial tension is of great significance in understanding the relationship between structure and properties and guiding the design of molecular structure. This paper also briefly introduces the design and synthesis of a series of LCPAE using long carbon chain polyamide PA1012 with independent intellectual property rights in our laboratory. Finally, combined with the existing research progress, the paper summarizes the important scientific problems faced by LCPAE and the practical problems that need to be solved in order to realize the localization of LCPAE.
【作者单位】： 中国科学院化学研究所工程塑料院重点实验室北京分子科学国家实验室;
【基金】：国家自然科学基金面上项目(21574140)和重点项目(U1510207)资助
【分类号】：TQ334
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本文编号：2102265