共聚酰胺对聚甲醛热稳定作用和结晶成核作用研究  

Study on the Thermal Stabilization and Nucleation Effect of Polyamide on POM

作　　者：胡友亮[1] 叶林[1] 孙建丽[1] 简芳[1] 刘芳[1] 侯世荣[1] 

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

出　　处：《中国塑料》2004年第7期58-60,共3页China Plastics

基　　金：云南省省院省校科技合作项目 ( 2 0 0 2ZABDA0 0A0 15)

摘　　要：用 2 2 0℃等温热失重法通过对热失重率和热失重速率的测试研究了共聚酰胺 (COPA)作为甲醛吸收剂对聚甲醛 (POM )热稳定性的影响。同时用HAAKE转矩流变仪对平衡扭矩进行测试 ,其熔体粘度随COPA加入量的增加而增大 ,表明POM体系热稳定性提高。热重分析 (TGA)所得的特征温度的增大也表明COPA能提高POM的热稳定性。差示扫描量热分析 (DSC)和偏光显微镜 (PLM )观察的结果表明COPA能提高POM的结晶性能 。Polyoxymethylene (POM) was blended with co-polyamide (COPA) as a formaldehyde absorber. TGA analysis showed that the thermal stability of POM increased with increasing amount of COPA. DSC and polarized light microscope studies indicated that COPA promoted the nucleation in POM during crystallization. The equilibrium torque was measured using a HAKKE Torque Rheometer.It was noticed that the viscosity of the melt increased with introducing of COPA.

关 键 词：聚甲醛 共聚酰胺 热稳定性 结晶成核 

分 类 号：TQ326[化学工程—合成树脂塑料工业]