Enhanced wear resistance of hybrid PTFE/Kevlar fabric/phenolic composite by cryogenic treatment
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Hybrid PTFE/Kevlar fabric was treated by cryogenic approach. The untreated or cryo-treated fabric was incorporated into fabric/phenolic composite for friction and wear tests. It was found that the wear resistance of the fabric/phenolic composite was improved after cryo-treatment, although the friction coefficient increased to a certain extent. SEM observations showed that the roughness of hybrid fabric increased by cryo-treatment, which may enhance the mechanical interlocking of the phenolic resin on the fiber surface. Enhanced fiber/resin adhesion was considered to contribute to the improved wear resistance of cryo-treated fabric/phenolic composite.
KeywordsWear Resistance Wear Rate Wear Surface Adhesion Strength Composite Coating
We appreciate the financial support from national Project 973 (Grant No. 2007 CB607601), Fund for Creative Research Groups (Grant NO. 50721062) and National natural science foundation (Grant NO. 50773089).