半生物基尼龙5T/510的非等温结晶动力学研究
Non-isothermal crystallization kinetics of semi-biobased nylon 5T/510
周一伟 1杨克俭 1马炼 1沈嘉琪 1汤兆宾1
作者信息
- 1. 浙江新力新材料股份有限公司,浙江温州 325000
- 折叠
摘要
以生物基单体1,5-戊二胺为原材料,采用熔融聚合方法制备了半生物基尼龙(PA)5T/510,使用了差式扫描量热仪研究了PA510和PA5T/510及PA5T的非等温结晶行为,分别运用jeziorny方程和莫志深法对其进行了非等温结晶动力学分析.Jeziorny方程分析结果表明,与PA5T和PA510相比,PA5T/510的结晶温度最低,结晶速度最慢.在非等温过程中PA5T/510的结晶生长方式为二维或三维生长,受降温速率影响.莫志深法分析结果表明,在同一结晶度下,PA5T/510的结晶速率较PA510和PA5T更低.通过Kissinger方程计算得到PA5T/510的活化能为-120.486 5 kJ/mol,小于PA510(-205.014 9 kJ/mol)和PA5T(-252.762 2 kJ/mol)的非等温结晶活化能,表明PA5T/510与PA510和PA5T相比,结晶速率最低,结晶能力最弱.
Abstract
Semi-biobased nylon(PA5T/510)was prepared by melt polymerization using the biobased monomer 1,5-pentane-diamine as the raw material,and the non-isothermal crystallization behaviors of PA510 and PA5T/510 and PA5T were investigated using differential scanning calorimetry and the kinetics of non-isothermal crystallization were analyzed by the Jeziorny equation and the Mo Chi-Shen method,respectively.The results of the Jeziorny equation analysis show that PA5T/510 has the lowest crystalliza-tion temperature and the slowest crystallization rate compared to PA5T and PA510.The crystallization growth of PA5T/510 during the non-isothermal process is in two or three dimensions,which is affected by the cooling rate.The results of the analysis of Mo Chi-Shen method show that the crystallization rate of PA5T/510T is lower than that of PA510 and PA5T at the same degree of crystallini-ty.The activation energy of PA5T/510 is calculated by Kissinger equation as-120.486 5 kJ/mol,which is smaller than the activa-tion energy of non-isothermal crystallization of PA510(-205.014 9 kJ/mol)and PA5T(-252.762 2 kJ/mol),indicating that PA5T/510 has the lowest crystallization rate and the weakest crystallization ability compared with PA510 and PA5T.
关键词
共聚尼龙/半生物基/1,5-戊二胺/非等温结晶动力学Key words
copolymerized nylon/semi-biobased/1,5-pentanediamine/non-isothermal crystallization kinetics引用本文复制引用
基金项目
温州市重大科技创新攻关项目(ZG2021007)
出版年
2024
NETL
NSTL
万方数据