The tribological properties of Kevlar pulp reinforced epoxy composites under dry sliding and water lubricated condition

Kevlar pulp reinforced epoxy composites were prepared by compression molding. The friction and wear behavior of Kevlar pulp reinforced epoxy composites against stainless steel under dry sliding and water lubricated conditions was comparatively evaluated on an M-2000 friction and wear tester. The effects of Kevlar pulp content on tribological properties of the composites were investigated. The worn surfaces morphologies of neat epoxy and its composites were observed with a scanning electron microscopy (SEM) and the wear mechanisms were discussed. The results show that the incorporation of Kevlar pulp into epoxy contributed to improve the friction and wear behavior considerably. The optimum wear reduction was obtained when the content of Kevlar pulp is 40 vol.%. Neat epoxy and its composites sliding against stainless steel register lower friction coefficients and wear rates under water lubricated condition than under dry sliding, owing to the boundary lubricating and cooling effect of distilled water. Adherence, plowing and plastic deformation are dominant under dry sliding, and abrasive wear is dominant under water lubricated condition.

[1]  Ho Jang,et al.  Friction and wear of friction materials containing two different phenolic resins reinforced with aramid pulp , 2000 .

[2]  Wang Jun.  Progress of Research on Tribology of Fiber Reinforced Polymer Composites , 2000 .

[3]  H. Pihtili,et al.  Effect of load and speed on the wear behaviour of woven glass fabrics and aramid fibre-reinforced composites , 2002 .

[4]  Jia Jun-hong.  Comparative Study of Tribological Behavior of Carbon Fiber Reinforced Polytetrafluoroethylene Composites at Dry- and Water-Lubricated Sliding against Stainless Steel , 2004 .

[5]  B. Wetzel,et al.  Friction and wear of low nanometer Si3N4 filled epoxy composites , 2003 .

[6]  D. Rodrigue,et al.  Tensile Properties of Polymerization-Filled Kevlar Pulp/Polyethylene Composites , 2004 .

[7]  Ming Qiu Zhang,et al.  Epoxy nanocomposites with high mechanical and tribological performance , 2003 .

[8]  D. Xiong,et al.  Friction and wear properties of UHMWPE composites reinforced with carbon fiber , 2005 .

[9]  F. Blum,et al.  Hybrid phenolic friction composites containing Kevlar® pulp Part II—wear surface characteristics , 1996 .

[10]  Laigui Yu,et al.  Investigation of the transfer film characteristics and tribochemical changes of Kevlar fiber reinforced polyphenylene sulfide composites in sliding against a tool steel counterface , 2002 .

[11]  R. Janssen,et al.  Wear and friction of aramid fiber and polytetrafluoroethylene filled composites , 1997 .

[12]  M. Lovell,et al.  On the Sliding Friction Characteristics of Unidirectional Continuous FRP Composites , 2002 .

[13]  Hui-di Zhou,et al.  A comparative investigation of the friction and wear behavior of polyimide composites under dry sliding and water-lubricated condition , 2003 .