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

作　　者：周一伟 杨克俭 马炼 沈嘉琪 汤兆宾 ZHOU Yiwei;YANG Kejian;MA Lian;SHEN Jiaqi;TANG Zhaobin(Zhejiang Xinli New Material Co.,Ltd.,Wenzhou 325000,China)

机构地区：[1]浙江新力新材料股份有限公司,浙江温州325000

出　　处：《工程塑料应用》2024年第5期134-139,共6页Engineering Plastics Application

基　　金：温州市重大科技创新攻关项目(ZG2021007)。

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-120.4865 kJ/mol,小于PA510(-205.0149 kJ/mol)和PA5T(-252.7622 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。Semi-biobased nylon(PA5T/510)was prepared by melt polymerization using the biobased monomer 1,5-pentanediamine 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 crystallization 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 crystallinity.The activation energy of PA5T/510 is calculated by Kissinger equation as-120.4865 kJ/mol,which is smaller than the activation energy of non-isothermal crystallization of PA510(-205.0149 kJ/mol)and PA5T(-252.7622 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 

分 类 号：TQ317.5[化学工程—高聚物工业]