Silane-grafted graphene oxide improves wear and corrosion resistance of polyimide matrix: molecular dynamics simulation and experimental analysis

  • Rui Yuan
  • Pengfei Ju
  • Yanping Wu
  • Li Ji
  • Hongxuan Li
  • Lei ChenEmail author
  • Huidi Zhou
  • Jianmin ChenEmail author


The reinforcing effect of graphene oxide (GO) and its derivatives for polymer matrices highly depends on their dispersion therein. Thus, a facile method was developed to enhance the dispersibility of GO via compounding with γ-methacryloxypropyltrimethoxysilane (GO–KH570). The interfacial interactions between GO and KH570, as well as the surface morphology, chemical composition and polarity, were investigated by molecular dynamics simulation combined with experimental methods. Findings indicate that KH570 can successfully graft onto the surface of GO nanosheets via the covalent bonding, and the polarity of the as-obtained GO–KH570 can be tuned by adjusting the dosage of KH570. Besides, the GO–KH570 was further used as the filler to improve performances of polyimide (PI) matrix. After using this GO–KH570 composite, the PI-based coating was endowed with excellent wear resistance and corrosion resistance properties. Particularly, PI/GO–KH570-2 coating with a GO–KH570-2 dosage of 0.5 wt% exhibits much higher hardness, showing promising potential as the candidate high-performance coating in aerospace and marine industries.



This work was supported by the National Natural Science Foundation of China (Grant Nos. U1637204 and 51775537).

Supplementary material

10853_2019_3672_MOESM1_ESM.docx (148 kb)
Supplementary material 1 (DOCX 148 kb)


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhouPeople’s Republic of China
  2. 2.University of Chinese Academy of SciencesBeijingPeople’s Republic of China
  3. 3.Shanghai Aerospace Equipment ManufacturingShanghaiPeople’s Republic of China

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