中国塑料 ›› 2022, Vol. 36 ›› Issue (6): 39-45.DOI: 10.19491/j.issn.1001-9278.2022.06.007

• 材料与性能 • 上一篇    下一篇

聚酰亚胺/多壁碳纳米管泡沫材料的制备及性能研究

王帅, 张玉迪, 杨富凯, 徐新宇()   

  1. 辽宁石油化工大学石油化工学院,辽宁 抚顺 113001
  • 收稿日期:2022-01-25 出版日期:2022-06-26 发布日期:2022-06-27
  • 通讯作者: 徐新宇(1979-),女,副教授,主要研究复合材料的制备及其性能,xuxinyu_2012@163.com
    E-mail:xuxinyu_2012@163.com
  • 基金资助:
    辽宁省教育厅项目(L2019001)

Preparation and properties of polyimide/multi⁃walled carbon nanotubes composite foams

WANG Shuai, ZHANG Yudi, YANG Fukai, XU Xinyu()   

  1. School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun 113001,China
  • Received:2022-01-25 Online:2022-06-26 Published:2022-06-27
  • Contact: XU Xinyu E-mail:xuxinyu_2012@163.com

摘要:

将不同质量分数的多壁碳纳米管(MWCNT)与PI通过原位聚合制备了聚酰亚胺(PI)/MWCNT泡沫复合材料,并利用扫描电子显微镜、热失重等仪器对材料性能进行了测试。结果表明,随着MWCNT质量分数的增加,泡孔直径增大,泡沫密度降低,当MWCNT含量超过0.4 %(质量分数,下同)易发生团聚作用,限制了泡沫结构的形成,导致泡沫的形状不规则;在添加0.2 %的MWCNT时,压缩强度、压缩模量、硬度获得了最好的增强效果,并发现增强效果随MWCNT质量分数的增加增强效果呈现先增大后降低的趋势;样品的热稳定性在添加0.05 %质量分数的MWCNT时达到最佳水平。

关键词: 聚酰亚胺, 多壁碳纳米管, 泡沫材料, 力学性能

Abstract:

Polyimide/multi?walled carbon nanotubes (MWCNT) composite foams were prepared through in?situ polymerization of polyimide with different mass fractions of MWCNT, and their morphology and properties were investigated using scanning electron microscopy and thermogravimetry. The results indicated that the cell diameter of the composite foams increased with an increase in the mass fraction of MWCNT, but their foam density decreased. There was an agglomeration occurring when the MWCNT content exceeded 0.4 wt%. This limited the formation of the foam structure and led to foaming an irregular shape. The composite foams obtained an optimal enhancement effect on compressive strength, compressive modulus, and hardness when 0.2 wt% MWCNT was incorporated. The enhancement effect was found to increase at first and then tended to decrease with an increase in the mass fraction of MWCNT. The composite foams achieved a maximum thermal stability when 0.05 wt% MWCNT was added.

Key words: polyimide, multi?walled carbon nanotube, foam material, mechanical property

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