文献类型：期刊文献

中文题名：PP/PP-g-MAH/EVOH共混物流变和结晶行为研究

英文题名：Study on Rheological and Crystallization Behavior of PP/PP-g-MAH/EVOH Blends

作者：罗大军 李杨 金先义 韦俊宇 秦舒浩

第一作者：罗大军

机构：[1]贵州理工学院材料与能源工程学院,贵州贵阳550003;[2]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014

第一机构：贵州理工学院材料与能源工程学院

年份：2020

卷号：48

期号：10

起止页码：44-47

中文期刊名：塑料科技

外文期刊名：Plastics Science and Technology

收录：CSTPCD;;北大核心:【北大核心2017】；

基金：贵州省科技计划项目(黔科合基础[2019]1134)。

语种：中文

中文关键词：聚丙烯;乙烯-乙烯醇共聚物;流变行为;结晶行为

外文关键词：Polypropylene;Ethylene-vinyl alcohol copolymer;Rheological behavior;Crystallization behavior

摘要：采用马来酸酐接枝聚丙烯(PP-g-MAH)为相容剂,增容聚丙烯/乙烯-乙烯醇共聚物(PP/EVOH)共混体系。利用旋转流变仪研究PP-g-MAH含量对PP/PP-g-MAH/EVOH共混物流变和结晶行为影响。结果表明:随着PP-g-MAH含量的增加,PP/PP-g-MAH/EVOH共混物体系相容性逐渐改善,黏度、储能模量与损耗模量均先增加后减小。此外,随着PP-g-MAH含量的增加,PP/PP-g-MAH/EVOH共混物中PP相的成核温度(Tb)和生长温度(Tc)也逐渐向低温方向偏移,同时PP晶体后期成核速率和晶体长大速率逐渐减小。
The PP/EVOH blend system was compatibilized by using PP-g-MAH as a compatibilizer.The effects of PPg-MAH content on the rheological and crystallization behavior of PP/PP-g-MAH/EVOH blends were investigated by the rotational rheometer.The results showed that the compatibility of PP/PP-g-MAH/EVOH blend system improved gradually with the increase of PP-g-MAH content,and the viscosity,storage modulus and loss modulus of blends increased first and then decreased.In addition,with the increase of PP-g-MAH content,the nucleation temperature(T_b)and growth temperature(T_c)of the PP phase in the blends also gradually moved to low temperatures.At the same time,the nucleation rate and crystal growth rate of PP crystals gradually decrease in the later stage.