TABLE OF CONTENTS The resistance to abrasion is closely related to other factors such as hardness, resiliency, and the type and amount of added fillers and additives. The resistance to abrasion depends on factors such as test conditions, type of abrading material, and development and dissipation of heat during the test cycle. It is most often measured by the weight loss when a material is abraded with an abrader after a number of revolutions (at least 5000). The Taber abrader is widely used. For softer materials, less abrasive wheels with a smaller load on the wheels may be used. Wear may be high when reinforced parts are in contact with unreinforced parts. Use of lubricated reinforced grades may reduce wear when in contact with an unreinforced component. The abrasion resistance of LDPE is 10 15 mg/100 cycles, higher than that of HDPE at 2 5 mg/100 cycles. China clay additives can be used to improve scratch resistance.
