PS/PTFE共混体系发泡行为研究

doi:10.19491/j.issn.1001-9278.2018.12.003

中国塑料 ›› 2018, Vol. 32 ›› Issue (12): 16-19,55.DOI: 10.19491/j.issn.1001-9278.2018.12.003

PS/PTFE共混体系发泡行为研究

李莹,张晨

北京化工大学材料科学与工程学院，碳纤维及功能高分子教育部重点实验室

收稿日期:2018-06-05 修回日期:2018-08-22 出版日期:2018-12-26 发布日期:2019-01-25

Study on Foaming Behavior of PS/PTFE Blends

Received:2018-06-05 Revised:2018-08-22 Online:2018-12-26 Published:2019-01-25

摘要/Abstract

摘要： 通过熔融共混法制备聚苯乙烯/聚四氟乙烯（PS/PTFE）共混材料，研究了PTFE含量及形态对PS/PTFE共混材料的流变行为以及发泡行为的影响。结果表明，PTFE原位成纤后可以显著改善PS/PTFE共混材料的流变行为，提高PS/PTFE共混材料的可发性；同时PTFE可以作为高效成核剂，促进泡孔成核，提高泡孔密度，降低泡孔尺寸，降低PS/PTFE共混材料的泡沫密度。

Abstract: PS/PTFE nanocomposites were prepared by a melt blending method, and the effects of PTFE content and morphology on the rheological behaviors and foaming behaviors of PS/PTFE blends were investigated. The results indicated that PTFE could be conducted by in-situ fibrillation to improve the rheological behavior of PS/PTFE blends significantly, thus enhancing the foamability of the blends. Meanwhile, PTFE could act as a highly effective nucleation agent to promote the cell nucleation and reduce cell size and reduced the foam density of the blends accor-dingly.

李莹张晨. PS/PTFE共混体系发泡行为研究[J]. 中国塑料, 2018, 32(12): 16-19,55.

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PS/PTFE共混体系发泡行为研究

Study on Foaming Behavior of PS/PTFE Blends

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