聚对苯二甲酰癸二胺(PA10T)的结晶动力学  

Crystallization Kinetics of Poly(Decamethylene Terephthalamide)(PA10T)

作　　者：温笑菁[1] 易庆锋 麦杰鸿 蒋智强 姜苏俊 

机构地区：[1]东北大学秦皇岛分校资源与材料学院,河北秦皇岛066004 [2]金发科技股份有限公司产品研发中心塑料改性与加工国家工程实验室,广东广州510520 [3]上海金发科技发展有限公司,上海201714

出　　处：《高分子材料科学与工程》2014年第1期72-77,共6页Polymer Materials Science & Engineering

基　　金：东北大学基本科研业务费(N110823001);国家自然科学基金青年基金资助(11204027)

摘　　要：用差示扫描量热仪详细研究了聚对苯二甲酰癸二胺(PA10T)的等温与非等温结晶动力学。用Avrami方程描述了PA10T等温结晶动力学,发现PA10T在选定的结晶条件下晶体的生长模式是二维生长,成核方式为均相成核,并求出Avrami指数为2,结晶活化能为302.32 kJ/mol;研究PA10T非等温结晶动力学后,发现随着降温速率的增大,结晶峰值温度向低温移动,结晶度和结晶焓增加,结晶速率显著加快。用Mo方程描述了其非等温结晶动力学,F(T)值随着相对结晶度的增加而增加,α值基本保持在1.6,非等温结晶活化能为338.56 kJ/mol。The isothermal and non-isothermal crystallization kinetics of poly （decamethylene terephthalamide） （PA10T） were investigated by differential scanning calorimetry. The isothermal crystallization kinetics was described by Avrami equation. The two-dimensional growth and homogeneous nucleation during the crystallization of PA10T was discovered. The Avrami exponent is 2.0 for PA10T, and the activation energy is 302.32 kJ/mol. The non- isothermal crystallization kinetics of PA10T were studied. It was found that with the increase of cooling rate, the crystallization peak temperature decreases, the crystallinity and crystallization enthalpy increase and the crystallization rate is dramatically promoted. The non-isothermal crystallization kinetics was analyzed by Mo equation. The results show that the constant a is kept at 1.6 and the activation energy is 338.56 kJ/mol.

关 键 词：聚对苯二甲酰癸二胺 结晶动力学 结晶活化能 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]