塑料科技2025，Vol.53Issue(9)：15-21,7.DOI:10.15925/j.cnki.issn1005-3360.2025.09.003
伸直链晶体增强聚丁二酸丁二醇酯结晶与力学性能的研究
Study on Crystallization and Mechanical Properties of Polybutylene Succinate Enhanced by Extended-chain Crystals
摘要
Abstract
The insufficient mechanical properties of polybutylene succinate(PBS)restrict its broader application.In the study,self-reinforced PBS/extended-chain crystals(ECC)composites were prepared by blending PBS with its ECC particles.The influence of thermal treatment temperature on crystallization behavior and mechanical performance was systematically investigated.The results showed that the melting temperature of ECC(137.7℃)was significantly higher than that of raw PBS(115.0℃).After heat treatment at 120～140℃,unmelted ECC acted as heterogeneous nucleating agents to promote PBS matrix crystallization.When the heat treatment temperature was 135℃,the residual ECC crystal fragments increased the crystallization temperature of PBS by 10.3℃and shortened the semi-crystallization time by 37.7%.Tensile tests demonstrated that ECC incorporation markedly improved both stiffness and toughness.Compared with raw PBS,the tensile strength and elongation at break increased by 20.7%and 22.1%,respectively.Scanning electron microscopy analysis indicated that uniformly dispersed ECC enhanced stress transfer efficiency and optimized energy dissipation pathways through crack deflection and fiber pullout,thus synergistically enhancing the mechanical performance of the composites.关键词
聚丁二酸丁二醇酯/伸直链晶体/结晶行为/力学性能/自增强Key words
Polybutylene succinate/Extended-chain crystals/Crystallization behavior/Mechanical properties/Self-enhancement分类
化学化工引用本文复制引用
陈嘉瑶,高湛,叶海木..伸直链晶体增强聚丁二酸丁二醇酯结晶与力学性能的研究[J].塑料科技,2025,53(9):15-21,7.基金项目
国家自然科学基金(22473113) （22473113）
