COMPOSITES SCIENCE AND ENGINEERING ›› 2025, Vol. 0 ›› Issue (3): 130-138.DOI: 10.19936/j.cnki.2096-8000.20250328.017

• ENGINEERING APPLICATION • Previous Articles     Next Articles

Study on the effect of SiC/SiO2 complex coating on the antioxidant performance of carbon fiber and its composite materials

YAN Haibo, TAO Jiadong, ZHOU Zihan, HUANG Zhixiong, SHI Minxian, DING Jie*   

  1. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
  • Received:2024-02-05 Online:2025-03-28 Published:2025-04-21

Abstract: A SiC/SiO2 complex coating is prepared on the surface of carbon fiber by sol-gel method and precursor infiltration pyrolysis method, and carbon fiber reinforced phenolic resin matrix composites are prepared by using autoclave process, the flexural strength of the composites is tested after oxidation at 600 ℃, 800 ℃ and 1 000 ℃, studied the effect of coating on the oxidation resistance of carbon fiber and its composite materials. The results show that the flexural strength of complex coating carbon fiber/phenolic resin composites after oxidation at 1 000 ℃ in air is 60 MPa, which is 3.3 times of the flexural strength of original carbon fiber/phenolic resin composites under the same conditions, and the good antioxidant effect of SiC/SiO2 coating on carbon fibers gives composite materials a certain flexural strength. And under the synergistic protection of SiC/SiO2 coating, the complex coating carbon fiber/phenolic resin composite material exhibits better ablation resistance under oxygen acetylene flame.

Key words: SiC/SiO2 complex coating, carbon fiber, resin matrix composite, oxidation resistance, flexural property, ablation resistance

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