聚甲醛/共聚酰胺共混物的结晶形态及力学性能  

Study on Crystallite Morphology and Mechanical Property of Polyoxymethylene/ Copolyamide Blends

作　　者：李昕[1] 曲敏杰[1] 李建丰[2] 索子君[1] 魏后禄[1] 张博[1] 

机构地区：[1]大连轻工业学院化工与材料学院,辽宁大连116034 [2]大连理工大学化工学院高分子材料系,辽宁大连116012

出　　处：《塑料科技》2007年第3期34-37,共4页Plastics Science and Technology

基　　金：辽宁省教育厅资助项目(A类05L077)

摘　　要：研究了共聚酰胺含量对聚甲醛/共聚酰胺(POM/COPA)共混物结晶形态及力学性能的影响。结果表明:POM/COPA共混物中存在氢键相互作用;结晶温度对POM的结晶形态有较大影响,温度较高时POM结晶较完善,球晶尺寸较大;同时,COPA的加入使共混物的球晶细化,极大地改善了POM的韧性。当COPA含量为4%时,共混物缺口冲击强度达到最大值,拉伸强度几乎不变,POM/COPA具有较理想的综合力学性能。The effect of the COPA content on the crystallite morphology and mechanical property of polyoxymethylene/ Copolyamide （POM/COPA） blends was studied. The results showed that the hydrogen bond interaction exists in the POM/COPA blends, the crystallization temperature has great influence on POM, when the temperature is higher, it has a better crystallization and bigger spherulite size. With addition of COPA, it causes the spherulite to become fine and the toughness of POM to be increased greatly. When the content of the COPA is 4%, the blends have the maximum izod impact strength and the tensile strength is nearly unchanged, POM/COPA blends have better mechanical properties,

关 键 词：聚甲醛 共聚酰胺 结晶形态 力学性能 

分 类 号：TQ320.7[化学工程—合成树脂塑料工业]