摘要
韧性断裂到脆性断裂的转变是影响聚碳酸酯性能的主要缺陷之一,较低的形变水平可能会发生灾难性地失效,解决该问题十分重要。综述了分子结构中各因素对聚碳酸酯断裂行为的影响,如相对分子质量及其分布、端基类型、交联杂化结构。同时,对产生这些结构的原因及机理进行了详细分析,包括催化剂、聚合物单体比例、聚合反应温度、添加剂含量。介绍了近期国内外有关聚碳酸酯失效模式影响因素的研究成果,为有效提高聚碳酸酯材料冲击性能,减少韧脆转变的发生提供思路。
A systematic review was conducted on the effects of molecular structure factors,such as molecular weight and distribution,end group type,and cross⁃linked hybrid structure,on the fracture behavior of polycarbonate.Additionally,detailed analysis was performed on the reasons and mechanisms behind these structures including catalysts,polymer monomer proportions,polymerization temperatures,and additive contents.The present paper mainly introduces the recent research results on the influencing factors of the failure mode of polycarbonate at home and abroad,with a view to providing some suggestions for effectively improving the impact properties of polycarbonate materials and reducing the occurrence of tough⁃brittle transition.
作者
郭垠
张璐
吴召伟
宋力
董海鹏
钱富娟
GUO Yin;ZHANG Lu;WU Zhaowei;SONG Li;DONG Haipeng;QIAN Fujuan(Zhejiang Petroleum&Chemical Co.,Ltd.,Research Institute,Zhoushan,Zhejiang 316000,China)
出处
《塑料》
CAS
CSCD
北大核心
2024年第4期61-66,共6页
Plastics
基金
浙江省重点研发计划(2020C01010)。
关键词
聚碳酸酯
冲击强度
失效模式
相对分子质量
交联杂化结构
polycarbonate
impact intensity
failure mode
molecular weight
crosslinked hybrid structure
