【作者】 董侠； 王莉莉； 朱平； 高昀鋆； 王笃金；

【Author】 Xia Dong;Lili Wang;Ping Zhu;Yunyun Gao;Dujin Wang;Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences;

【机构】 北京分子科学国家实验室,中国科学院工程塑料重点实验室,中国科学院化学研究所；

【摘要】 研究了长碳链聚酰胺变形诱导的微观结构演化及其机理,重点研究其片晶发展、晶型转变和分子取向。通过研究长碳链聚酰胺机械性能变化及小角X-ray光散射图案的温度依赖性,建立了微观结构与力学性能的关系,并观察到由于拉伸导致的片晶取向、拉伸诱导的新的片晶生成在SAXS散射图案上的复杂变化,揭示了通过温度场和外力场调控材料力学性能的机理和依据。在此基础上,进行了长碳链聚酰胺基弹性体材料的研究和开发。更多还原

【Abstract】 Deformation-induced microstructure evolution of long alkane segment polyamide(LCPA), with an emphasis on lamella development, polymorphism transition and molecular orientation, is investigated. The temperature dependence of the mechanical properties and the small angle X-ray scattering were discussed. The correlation between microstructure and mechanical response has been successfully established, which is featured by the synchronous occurrence of transient structure with slight strain hardening. Based on the LCPA synthesis, we prepare the poly(ether-amide) elastomers materials.更多还原