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用偏心转子挤出机制备的聚碳酸酯/聚丙烯合金的结构-性能关系

Structure-property relationship of polycarbonate/polypropylene alloys prepared eccentric rotor extruder.

作者信息

Yu Xingxing, He Jingwei, Liu Yao, Su Long, Liu Fang

机构信息

School of Materials Science and Engineering, South China University of Technology Guangzhou Guangdong 510640 China

Kingfa Sci. & Tech. Co., Ltd Guangzhou Guangdong 510663 China

出版信息

RSC Adv. 2019 Dec 12;9(70):41248-41255. doi: 10.1039/c9ra07703k. eCollection 2019 Dec 9.

DOI:10.1039/c9ra07703k
PMID:35540030
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9076460/
Abstract

In this work, PC/PP alloys were respectively prepared by eccentric rotor extruder (ERE) and twin screw extruder (TSE). By analyzing the mechanical properties, morphology, rheological behavior and thermal properties of PC/PP alloys, the effects of processing methods on the two-phase structure and properties of PC/PP alloys were studied. The results showed that the size of the dispersed phase of PC/PP alloys was smaller and its distribution was more uniform under the elongational flow field provided by ERE. Compared to the typical sea-island phase structure provided by the shear flow field, the morphology of the alloys showed a "sea-island-fiber" phase structure under the elongational flow field. Compared to the TSE, the notched lzod impact strength of the PC/PP alloy prepared by ERE increased by 31.0%. ERE played a stronger effect on the dispersion and distribution of PC/PP alloys, which was also confirmed in the results of dynamic rheology analysis and differential scanning calorimetry. The blending method dominated by the elongational flow field could prepare PC/PP alloys with better properties.

摘要

在本工作中，分别采用偏心转子挤出机（ERE）和双螺杆挤出机（TSE）制备了PC/PP合金。通过分析PC/PP合金的力学性能、形态、流变行为和热性能，研究了加工方法对PC/PP合金两相结构和性能的影响。结果表明，在ERE提供的拉伸流场下，PC/PP合金分散相尺寸更小且分布更均匀。与剪切流场提供的典型海-岛相结构相比，合金在拉伸流场下的形态呈现出“海-岛-纤维”相结构。与TSE相比，ERE制备的PC/PP合金的缺口悬臂梁冲击强度提高了31.0%。ERE对PC/PP合金的分散和分布作用更强，这在动态流变分析和差示扫描量热法的结果中也得到了证实。以拉伸流场为主导的共混方法能够制备出性能更优的PC/PP合金。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8968/9076460/9e6a6e0afaff/c9ra07703k-f10.jpg
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