复合材料科学与工程 ›› 2022, Vol. 0 ›› Issue (3): 45-50.DOI: 10.19936/j.cnki.2096-8000.20220328.006

• 应用研究 • 上一篇    下一篇

基于化学修饰氧化石墨烯自组装沉积法制备的彩色碳纤维性能研究

侯静1, 杨晨1, 刘亲亲2, 雷艳妮2, 许培俊1,2*   

  1. 1.长安大学 材料科学与工程学院,西安710064;
    2.陕西航天技术应用研究院有限公司,西安710199
  • 收稿日期:2021-07-26 出版日期:2022-03-28 发布日期:2022-04-24
  • 通讯作者: 许培俊(1984-),男,博士,教授,博士生导师,主要从事聚合物基复合材料方面的研究,xupeijun@chd.edu.cn。
  • 作者简介:侯静(1997-),女,硕士研究生,主要从事功能碳纤维复合材料界面性能方面的研究。
  • 基金资助:
    国家自然科学基金面上项目(51978072);中央高校基本科研业务费资助项目(300102319207);中国博士后基金(2018M643552)

Properties of color carbon fiber prepared by self-assembly deposition of chemically modified graphene oxide

HOU Jing1, YANG Chen1, LIU Qin-qin2, LEI Yan-ni2, XU Pei-jun1,2*   

  1. 1. School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China;
    2. Shaanxi Aerospace Technology Application Research Institute Co., Ltd., Xi'an 710199, China
  • Received:2021-07-26 Online:2022-03-28 Published:2022-04-24

摘要: 碳纤维因其高比强度、比模量等优异性能而广泛应用于航空、汽车、能源等领域,如何在保持碳纤维复合材料优异力学性能的同时兼顾其功能性和智能性逐渐成为复合材料未来的发展方向。氧化石墨烯(GO)水溶液在碳纤维上通过沉积自组装能够形成类似一维光子晶体的结构色涂层,但该GO涂层与碳纤维间仅存在物理吸附力,界面性能不足。本文利用硅烷偶联剂(APTES)对GO进行化学修饰,将修饰后的GO(mGO)同样通过自组装的方法在碳纤维表面沉积制备出彩色碳纤维。探究APTES含量对mGO-CF界面剪切强度、拉伸力学性能的影响及生色机理。结果表明,APTES中氨基官能团的引入能够显著改善碳纤维与mGO的界面黏结性能,且多层膜结构的mGO可以弥补碳纤维表面缺陷,提高单丝碳纤维强度。与GO-CF相比,mGO-CF-15的单丝拉伸强度提高了12.4%,界面剪切强度提高了13.5%。

关键词: 碳纤维, 氧化石墨烯, 界面剪切强度, 单丝拉伸强度, 复合材料

Abstract: Carbon fiber has been widely used in aviation, aerospace, automotive, energy and other fields due to its high specific strength, high specific modulus and other excellent properties. How to maintain the excellent mechanical properties of carbon fiber composites while taking into consideration its functionality and intelligence has gradually become the future development direction of composites. Graphene oxide (GO) aqueous solution can form a structural color coating similar to one-dimensional photonic crystal through deposition and self-assembly on carbon fiber. However, there is only physical absorbing force between GO coating and carbon fiber, and the interface performance is insufficient. In this paper, GO is chemically modified with silane coupling agent (APTES). The modified GO (mGO) is also deposited on the surface of carbon fibers by self-assembly method to prepare color carbon fibers. The influence of APTES content on interfacial shear strength, tensile mechanical properties and coloring mechanism are investigated. The results show that the introduction of amino functional group in APTES can significantly improve the interfacial bonding property between carbon fiber and GO. mGO with multilayer structure can remedy the surface defects of carbon fiber and improve the strength of monofilament fiber. Compared with GO-CF, the monofilament tensile strength and interfacial shear strength of mGO-CF-15 are increased by 12.4% and 13.5% respectively.

Key words: carbon fiber, graphene oxide, interfacial shear strength, monofilament tensile strength, composites

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