Fiber Reinforced Plastics/Composites ›› 2019, Vol. 0 ›› Issue (3): 21-25.

• BASIC STUDY • Previous Articles     Next Articles

STUDY ON THE PREPARATION AND INTERFACE PERFORMANCE OF O3-OXIZED CARBON FIBER/POLYIMIDE COMPOSITES

ZHANG Rong1,2, PEI Xue-liang3, XI Xian-feng3, OUYANG-Qin2   

  1. 1.School of Material Science and Engineering, Shanghai University, Shanghai 200444, China;
    2.National Engineering Laboratory for Carbon fiber Preparation Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China;
    3.Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
  • Received:2018-07-20 Online:2019-03-28 Published:2019-03-28

Abstract: Carbon fiber, the surface of which was modified through ozone oxidation, was used as the reinforcement for thermoplastic polyimide resin. Effect of ozone treatment time on monofilament tensile strength and surface functional groups had been studied using monofilament tensile test and X-ray photoelectron spectroscopy (XPS), respectively. The results indicated that the mechanical properties of carbon fiber was destructed, and the oxygen-containing functional groups on the surface increased with the process of the ozone treatment. The composites were made by thermoplastic polyimide and carbon fiber oxidized with the high retention rate of monofilament tensile strength and high oxygen-containing functional groups, and the interlaminar shear strength was evaluated. The results show that compared with unoxidized specimen, the interlaminar shear strength of the composites made by thermoplastic polyimide and carbon fiber oxidized for 5 minutes increased by 43%, showing that ozone treatment can effectively enhance fiber-matrix interfacial bonding.

Key words: carbon fiber, ozone oxidation, polyimide, composite

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