Characteristics and mechanism of abrasive wear for thermoplastic polymers

Xian Jiu, and Xiaomei Ling1)Department of Science and Technology, University of Science and Technology Beijing, Beijing 100083, China2) Department of Analytical Chemistry, School of Pharmaceutical Science, Peking University, Beijing 100083, China

摘 要：<正> Abrasive wear characteristics of polyethylene, polystyrene, polymethylmethacrylate, nylon 1010 and polyvinyl chloride were investigated. The volume relative wear resistance coefficients of these thermoplastic polymers are 18%-35% （hardened and low temperature tempered steel 45 was used as a comparing material）, and have a linear correlation with square roots of their cohesive energy densities. The coefficients of linear correlation is 0.949. Wear morphologies were observed by scanning electron microscope （SRM）. Main wear mechanism of the thermoplastic polymers includes brittle breaking for the hard and brittle polymers & plowing and fatiguing for the soft and tough ones.

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