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双峰聚丙烯的合成及性能研究

STUDY ON THE SYNTHESIS AND PROPERTY OF BBMODAL POLYPROPYLENE

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【作者】 张广平朱维平陆馨俞建勇

【Author】 Zhang Guangping , Zhu Weiping, Lu Xin, Yu Jianyong ( College of Textiles, Donghua University, Shanghai 200051, China; Polymer Processing Lab, East China University of Science and Technology, Shanghai 200237, China; Research Institute of Yangzi Petrochemical Corp. ,Nanjing 210048, China)

【机构】 东华大学纺织学院华东理工大学聚合物加工研究室东华大学纺织学院 上海 200051上海 200237 扬子石油化工股份有限公司研究院南京 210048上海 200237上海 200051

【摘要】 在小型反应器内合成了双峰聚丙烯(BMPP)和含有成核剂的双峰聚丙烯(BMPP/NA),考察了试样的结晶、熔融行为和力学性能。BMPP的结晶温度较均聚PP提高5℃(降温速率10℃/min),结晶速率有一定程度增加;而BMPP/NA的结晶温度较均聚PP提高16.5℃,且结晶速率明显加快。BMPP和BMPP/NA的拉伸强度和弯曲弹性模量较均聚PP有了较大提高。

【Abstract】 Bimodal polypropylene (BMPP) and nucleated bimodal polypropylene (BMPP/NA) were synthesized in a small stirred bed reactor, and the crystallization, melt behavior and mechanical properties of the samples were investigated. The crystallization temperature of BMPP increases by 5℃ at a cooling rate of 10℃/min and the crystallization rate increases to some extent compared with homopolypropylene; moreover, the crystallization temperature of BMPP/NA increases by 16. 5℃ and the crystallization rate increases markedly. The tensile strength and flexural elastic modulas of BMPP and BMPP/NA increase greatly compared with that of homopolypropylene.

【基金】 中石化总公司资助项目(401038)
  • 【文献出处】 工程塑料应用 ,Engineering Plastics Application , 编辑部邮箱 ,2003年10期
  • 【分类号】TQ325
  • 【被引频次】5
  • 【下载频次】274
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