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
郭清海,江建平,邓佶,柯伟斌,郭熙桃,邱志明
GUO Qing-hai,JIANG Jian-ping,DENG Ji,KE Wei-bin,GUO Xi-tao,QIU Zhi-ming
摘要(Abstract)：
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 using β-nucleating agent as an additive. The crystallization kinetics were analyzed by Avrami equation and Jeziorny methods. The results show that the addition of β-nucleating agent increases the crystallization temperature of PP during cooling, reduces the crystallization temperature range, and accelerates the crystallization rate.
关键词(KeyWords)：
PP;β-成核剂;非等温结晶;结晶动力学
PP;β-nucleating agent;non-isothermal crystallization;crystallization kinetics
基金项目(Foundation):
作者(Author):
郭清海,江建平,邓佶,柯伟斌,郭熙桃,邱志明
GUO Qing-hai,JIANG Jian-ping,DENG Ji,KE Wei-bin,GUO Xi-tao,QIU Zhi-ming
DOI: 10.16090/j.cnki.hcxw.2022.12.023
参考文献(References)：
- [1]王晓静,廖龙凤,柏文玖,等.热处理对聚丙烯结晶结构和力学性能的影响[J].塑料, 2011, 40(3):61-64.
- [2]韩李旺,刘义.成核剂对煤基高熔指聚丙烯K4860H性能的影响[J].当代化工研究, 2022(7):59-62.
- [3]高彦杰. β晶型PP研究进展[J].现代塑料加工应用, 2011, 23(3):51-54.
- [4]齐鹏飞,刘晨光.高效β成核剂对聚丙烯结晶性能的影响[J].青岛科技大学学报(自然科学版), 2019, 40(5):79-85.
- [5]丁茜,章自寿,麦堪成. α和β-成核作用硅灰石对聚丙烯结晶行为的共同作用[J].高分子材料科学与工程, 2020, 36(5):92-97.
- [6]傅勇. β成核剂对聚丙烯抗冲击性能的影响[J].合成树脂及塑料,2015, 32(3):18-20, 72.
- [7]祁蓉,铁文安,田小艳,等. β成核剂在聚丙烯材料中的改性研究与应用[J].塑料工业, 2021, 49(10):9-12.
- [8]郭勇. β成核剂改性聚丙烯研究进展[J].化工设计通讯, 2017, 43(8):133.