文献类型：期刊文献

英文题名：Reinforcing and toughening isotactic polypropylene through shear-induced crystallization and -nucleating agent induced crystallization

作者：Wang, Guanglong[1];Hou, Shusen[1];Cao, Junhui[1];Ding, Peng[1];Shen, Junfang[2];Chen, Jingbo[2]

第一作者：王广龙

通讯作者：Wang, GL[1]

机构：[1]Xinxiang Univ, Sch Mech & Elect Engn, Xinxiang 453003, Peoples R China;[2]Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Henan, Peoples R China

第一机构：新乡学院机电工程学院

通讯机构：[1]corresponding author), Xinxiang Univ, Sch Mech & Elect Engn, Xinxiang 453003, Peoples R China.|[1107111]新乡学院机电工程学院;[11071]新乡学院;

年份：2018

卷号：25

期号：11

外文期刊名：JOURNAL OF POLYMER RESEARCH

收录：;EI(收录号：20184406004518);Scopus(收录号：2-s2.0-85055422435);WOS:【SCI-EXPANDED(收录号:WOS:000448478600003)】；

基金：This work is supported by the National Natural Science Foundation of China Programs (11372284). The beta nucleating agent was kindly supplied by Shanxi Provincial Institute of Chemical Industry, China.

语种：英文

外文关键词：Crystalline morphologies; Reinforcement; Toughness; Sequential co-injection molding (SCIM); Isotactic polypropylene (iPP)

摘要：In this article, iPP with -nucleating agent was molded by sequential co-injection molding (SCIM), in which skin and core melt were injected into the mold cavity one after the other. The microstructure and mechanical properties of samples were investigated by polarized optical microscope (POM), wide angle X-ray diffraction (WAXD) and mechanical property test. Results show that plastic parts molded by SCIM have double shear layers due to twice shear induced by filling flow of skin and core melt. In the shear layers especially the layer at the overlap of skin and core material, shear promoted the formation of highly oriented structures (shish-kebabs) but inhibited the produce of -form. In core layer of skin material and core layer of core material, crystals are predominant. The combination of oriented structures (shish-kebabs) and crystals endow iPP with high strength and toughness. This work demonstrates a new approach to achieve high-performance polymer materials based on general plastics by manipulation strategy for morphology and structure.