高等学校化学学报 ›› 2017, Vol. 38 ›› Issue (7): 1264.doi: 10.7503/cjcu20170011

• 高分子化学 • 上一篇    下一篇

高介电常数石墨烯/聚酰亚胺复合材料的制备与性能

刘会1, 赵剑英1(), 姚海波2, 郭海泉2(), 高连勋2   

  1. 1. 山东理工大学化学工程学院, 淄博 255049
    2. 中国科学院长春应用化学研究所, 高分子物理与化学国家重点实验室, 长春 130022
  • 收稿日期:2017-01-05 出版日期:2017-07-10 发布日期:2017-05-18
  • 作者简介:联系人简介: 郭海泉, 男, 博士, 副研究员, 主要从事聚酰亚胺材料研究. E-mail: hqguo@ciac.ac.cn;赵剑英, 女, 博士, 副教授, 主要从事功能材料研究. E-mail: jyzhaociac@163.com
  • 基金资助:
    国家自然科学基金(批准号: 51373164)资助

Preparation and Properties of Graphene/polyimide Composites with High Dielectric Constant

LIU Hui1, ZHAO Jianying1,*(), YAO Haibo2, GUO Haiquan2,*(), GAO Lianxun2   

  1. 1. College of Chemical Engineering, Shandong University of Technology, Zibo 255049, China
    2. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry,Chinese Academy of Sciences, Changchun 130022, China
  • Received:2017-01-05 Online:2017-07-10 Published:2017-05-18
  • Contact: ZHAO Jianying,GUO Haiquan E-mail:jyzhaociac@163.com;hqguo@ciac.ac.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.51373164)

摘要:

在原位聚合制备氧化石墨烯/聚酰亚胺复合材料的过程中, 加入季铵盐表面活性剂, 抑制氧化石墨烯在高温亚胺化时的聚集, 同时将氧化石墨烯原位还原, 获得高介电常数的石墨烯/聚酰亚胺复合材料. 结果表明, 采用四丁基溴化铵和四丁基碘化铵作为还原剂, 利用原位化学还原方法所制备的石墨烯/聚酰亚胺复合材料的介电常数超过聚酰亚胺薄膜40倍以上, 复合材料的热稳定性和机械性能也优于聚酰亚胺薄膜. 热重分析结果表明, 在复合材料高温亚胺化过程中, 季铵盐发生热分解, 未残留在复合材料中.

关键词: 石墨烯, 季铵盐, 复合材料, 介电常数, 还原剂, 聚酰亚胺

Abstract:

Quaternary ammonium can be served as the reducing agent for the fabrication of graphene/polyimide(rGO/PI) composites via the in-situ chemical reduction of graphene oxide dispersed in polyimide matrix during the thermal imidization of polyimdes. The results showed that the dielectric constant of graphene/polyimide composites was 40 times as compared with that of graphene oxide/polyimide without the addition of tetrabutyl ammonium bromide. The thermostabilities and mechanical properties of graphene/polyimide composites were also improved simultaneously. Moreover, the quaternary ammonium surfactants would not remain in the composites, which can be decomposed after the rGO/PI composite materials was produced under high temperature.

Key words: Graphene, Quaternary ammonium, Composite, Dielectric constant, Reducing agent, Polyimide

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