熔融聚合耐高温聚酰胺的非等温结晶动力学研究

发布时间：2018-05-24 22:43

本文选题：熔融聚合 + 耐高温聚酰胺　；参考：《材料导报》2017年06期

【摘要】：通过差示扫描量热仪(DSC)研究了熔融聚合耐高温聚酰胺10T以及10T/11树脂在不同降温速率下的非等温结晶行为。通过Jeziorny法、Ozawa法以及Mo法分析了PA10T和PA10T/11的非等温结晶动力学,并采用Kissinger法、Takhor法以及Vyazovkin法计算了体系的结晶活化能。结果表明,在初期结晶阶段,PA10T和PA10T/11晶体的生长方式是一维针状生长和二维片状生长并存,同时存在异相成核现象;Jeziorny法、Mo法适合研究PA10T和PA10T/11树脂的非等温结晶过程,而Ozawa法不适合研究其非等温结晶过程;随着11-氨基十一酸含量增加,非等温结晶活化能的绝对值呈现先减小后增大再减小的变化趋势,说明结晶速率呈现先增加后减少再增加的变化趋势。
[Abstract]:The non isothermal crystallization behavior of high temperature resistant polyamide 10T and 10T/11 resin at different cooling rates was studied by differential scanning calorimeter (DSC). The non isothermal crystallization kinetics of PA10T and PA10T/11 were analyzed by Jeziorny method, Ozawa method and Mo method, and the system was calculated by Kissinger method, Takhor method and Vyazovkin method. The results show that the growth mode of PA10T and PA10T/11 crystals in the initial crystallization stage is the coexistence of one dimensional needle like growth and two dimensional flake growth, while the Jeziorny method and Mo method are suitable for the non isothermal crystallization of PA10T and PA10T/11 resins, while the Ozawa method is not suitable for the non isothermal crystallization process. With the increase of the content of 11- amino eleven acid, the absolute value of the non isothermal crystallization activation energy decreases first and then then decreases, indicating that the crystallization rate increases first and then decreases then increases.
【作者单位】：中北大学高分子与生物工程研究所;广东中塑新材料有限公司;华南师范大学物理与电信工程学院;
【基金】：国家科技支撑计划项目(2013BAE02B01) 广东省产学研结合项目(2013B090500003) 广东省特派员工作站项目(2014A090906002)
【分类号】：O633.22

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