热塑性聚氨酯弹性体对聚甲醛结晶行为的影响  

THE EFFECT OF THERMOPLASTIC POLYURETHANE ELASTOMER ON THE CRYSTALLIZING BEHAVIOR OF POLYOXYMETHYLENE

作　　者：刘鹏波[1] 徐闻[1] 范萍[1] 李伟[1] 

机构地区：[1]高分子材料工程国家重点实验室四川大学高分子研究所,四川成都610065

出　　处：《高分子材料科学与工程》2005年第3期137-140,共4页Polymer Materials Science & Engineering

基　　金：国家863计划项目(2002AA333070);云南省省院省校科技合作项目(2002ZABDA00A015)

摘　　要：采用示差扫描热分析(DSC)、偏光显微分析(PLM)及X射线衍射分析(XRD)等手段研究了热塑性聚氨酯弹性体(TPU)及增容剂Z对聚甲醛(POM)结晶行为的影响,结果表明,加入TPU及增容剂以后,POM的晶型保持不变,仍为六方晶系的结晶。随着TPU含量的增加,POM/TPU共混体系的球晶尺寸增大,熔点及结晶度降低;加入增容剂Z后,POM/TPU/Z体系的球晶尺寸变小,结晶度增大。The effect of thermoplastic polyurethane elastomer(TPU) on the crystallizing behavior of Polyoxymethylene(POM) was investigated by means of Different Scanning Calorimetry (DSC), Polarizing Microscope (PLM) and X-ray diffraction (XRD). The experimental results show that the crystal type of POM is not changed when blended with TPU and compatibilizer Z. With the increase of TPU content in the blend, the spherulity size increases, while the crystallinity and melting point decrease. The spherulites become smaller and the crystallinity increases when compatibilizer Z is added into the blend.

关 键 词：聚甲醛 热塑性聚氨酯弹性体 结晶 

分 类 号：TQ326.51[化学工程—合成树脂塑料工业]