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Epoxy composite reinforced with three‐dimensional polyimide fiber felt: Fabrication and tribological properties investigation
Author(s) -
Wang Huaiyuan,
Zhu Yixing,
Yan Lei,
Sun Liyuan,
Zhu Yanji
Publication year - 2016
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.44160
Subject(s) - tribology , materials science , composite number , polyimide , composite material , epoxy , scanning electron microscope , molding (decorative) , fiber , transfer molding , fabrication , layer (electronics) , medicine , mold , alternative medicine , pathology
Novel epoxy (EP) composite reinforced with three‐dimensional (3D) polyimide (PI) fiber felt (PI 3D /EP) is first fabricated by vacuum assisted resin transfer molding. The tribological behaviors of pure EP and PI 3D /EP composite under dry sliding and water lubricated condition are comparatively studied. Results indicate that both wear rates and friction coefficients of PI 3D /EP composite are lower than those of pure EP. The wear resistance of PI 3D /EP composite is 9.8 times higher than that of pure EP under dry sliding of 1.5 MPa and 0.76 m s −1 while a 27‐fold increase is achieved under water lubricated condition. The wear mechanisms of PI 3D /EP composite are investigated based on tribological testing results and scanning electron microscopy observations. The PI fiber felt provides strong 3D structure supports to sustain most of the loads on the composite, improving the mechanical and tribological properties significantly. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 44160.