China Plastics ›› 2021, Vol. 35 ›› Issue (3): 16-22.DOI: 10.19491/j.issn.1001-9278.2021.03.003

• Materials and Properties • Previous Articles     Next Articles

Effect of Modified Boehmite on Properties of Polypropylene

YE Jinlun1, YANG Liting1(), LI Yantao2, ZENG Cong2, LI Zhen1, HUANG Wenjie1, GUAN Jiawei1   

  1. 1.School of Chemistry,South China Normal University,Guangzhou 510006,China
    2.MBS Environmental Technology Corporation,Guangzhou 511483,China
  • Received:2020-09-17 Online:2021-03-26 Published:2021-03-22

Abstract:

Boehmite was activated and modified with a phthalate coupling agent (TC-114), and polypropylene (PP)/BM composites were then prepared by melting extrusion. The effect of modified boehmite on the performance of the composites was investigated. The results indicated that the composites with the modified boehmite achieved an increase in flexural strength by 14.4 % and in impact strength by 30.6 % in comparison to pure PP. However, in the case of the composites with the unmodified boehmite, their flexural strength and impact strength only increased by 6.9 % and 5.7 %, respectively. However, the elongation at break of the composites with the modified boehmite was 4 times as much as those with the unmodified boehmite. In addition, the melt flow rate, thermal stability, and limiting oxygen index of the composites were also improved due to the use of the modified boehmite. The higher content of the modified boehmite can lead to better thermal stability and flame retardant properties.

Key words: polypropylene, boehmite, activated modification, mechanical property, flame retardant, thermal stability

CLC Number: