不同熔融指数聚丙烯的非等温结晶动力学  

Non-Isothermal Arystallization Kinetics of Polypropylene With Different Melt Indices

作　　者：郭清海 江建平 邓佶 柯伟斌 郭熙桃[2] 邱志明[2] GUO Qing-hai;JIANG Jian-ping;DENG Ji;KE Wei-bin;GUO Xi-tao;QIU Zhi-ming(Guangdong Modern High-Tech Fiber Co.,Ltd.,Jieyang 515500,Guangdong,China;School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China)

机构地区：[1]广东蒙泰高新纤维股份有限公司,广东揭阳515500 [2]华南理工大学材料科学与工程学院,广东广州510640

出　　处：《合成纤维》2022年第12期1-4,共4页Synthetic Fiber in China

摘　　要：为改善聚丙烯(PP)的结晶性能,以β-成核剂作为添加剂,通过差示扫描量热法对不同熔融指数的PP样品在相同降温速率下的非等温结晶动力学进行了研究,通过Avrami方程以及Jeziorny方法对测试结果进行结晶动力学分析,结果表明:加入β-成核剂提高了PP在降温时的结晶温度,减小了结晶的温度区间,加快了结晶速率。In order to improve the crystallization properties of polypropylene(PP),the non-isothermal crystallization kinetics of PP samples with different melt indices at the same cooling rate were studied by differential scanning calorimetry usingβ-nucleating agent as an additive.The crystallization kinetics were analyzed by Avrami equation and Jeziorny methods.The results show that the addition ofβ-nucleating agent increases the crystallization temperature of PP during cooling,reduces the crystallization temperature range,and accelerates the crystallization rate.

关 键 词：PP β-成核剂 非等温结晶 结晶动力学 

分 类 号：TQ340.1[化学工程—化纤工业]