COMPOSITES SCIENCE AND ENGINEERING ›› 2022, Vol. 0 ›› Issue (3): 45-50.DOI: 10.19936/j.cnki.2096-8000.20220328.006

• APPLICATION RESEARCH • Previous Articles     Next Articles

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

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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