Abstract
The multi-walled carbon nanotubes were prepared into nanopaper with three-dimensional network structure by ultrasonic dispersion technology and suction filtration, and then implanted into Cf / PEEK composite materials by mold pressing process. The microstructure, tensile strength, flexural strength and abrasion resistance of the composites were tested. The influence of the nanopaper on the properties of composites were discussed and analyzed. After implanting a well- dispersed PANI-functionalized nanopaper layer, the tensile strength and bending strength of the 0.1 mm nanopaper composite increased by 20.6% and 26.6% respectively, which meant that high load is needed to cause the composite to break. There are pores in the interface of 0.2 mm nanopaper composite after hot pressing, and the improvement of mechanical properties is not significant. Compared with the pure Cf / PEEK composite, the friction coefficient of 0.1 mm nanopaper composite is reduced by 0.05, and the wear rate is reduced by 26%. This should be ascribed to that the self-lubricating property of MWCNTs. The three-dimensional network structure of nanopaper with good thermal conductivity can disperse the heat generated in the friction process and reduce the contact area between the Si3N4 ball and the resin matrix.
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The work reported here was supported by ‘the Fundamental Research Funds for the Central Universities, NO.NS2019035’.
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Li, B., Wang, X., Mao, B. et al. Improving the Mechanical Properties of Cf/ PEEK Composite by Implanting Functionalized Multi-Wall Carbon Nanopaper. Appl Compos Mater 27, 479–490 (2020). https://doi.org/10.1007/s10443-020-09814-6
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DOI: https://doi.org/10.1007/s10443-020-09814-6