多嵌段共聚聚酰胺弹性体的制备及性能研究  

Synthesisand Characteristics of Multi-block Copolymer Polyamide Elastomer

作　　者：张英伟 王文志 杨克俭 张志军 刘爱学 

机构地区：[1]株洲时代新材料股份有限公司,湖南株洲412007

出　　处：《塑料工业》2013年第2期16-19,共4页China Plastics Industry

摘　　要：以己内酰胺及十二内酰胺为主体,添加一定量的聚醚型预聚体进行阴离子无规共聚,获得系列多嵌段共聚聚酰胺弹性体;通过FTIR对其分子结构进行了表征,使用DSC、TG、DMTA研究了其热性能;并研究了多嵌段共聚聚酰胺弹性体材料力学性能与聚醚型预聚体用量及分子结构的关系。结果表明:随着聚醚型预聚体用量的提高,共聚物结晶度降低,高低温缺口冲击强度和断裂伸长率大幅增加,拉伸强度有所降低,材料表现出典型的弹性体性能特征。Multi-block copolymer polyamide elastomer was prepared by random anionic polymerization with caprolactam, laurolactam and polyether prepolymer. The molecular structure of the polymers were characterized by FT-IR, the thermal properties of the copolymer were established by DSC, TG and DMTA. The independence of mechanical properties of multi-block copolymer polyamide elastomer on the amount and structure of polyether prepolymer was also examined. The results showed that with the increasing loading of polyether prepolymer, the crystallinity of eopolymerization was decreased, the high/low temperature notched impact strength and elongation at break were obviously increased, the tensile strength was lower, the copolymer showed typical elastomer performance.

关 键 词：聚酰胺弹性体 阴离子无规共聚 聚醚型预聚体 力学性能 

分 类 号：TQ334.1[化学工程—橡胶工业]