Abstract
In this study, three polyurethanes (PUs) were synthesized, named PU-31, PU-35 and PU-41, whose tensile strength and modulus increased with the increasing hard segment content. The effect of different loads on wear behavior was investigated systematically. The results showed that the volume loss of PU-31, PU-35 and PU-41 were 1.84, 2.10 and 2.67 mm3 at 5 N load and 68.40, 53.67 and 42.34 mm3 at 120 N, respectively. It found that under low load, PU-31 with low modulus exhibited the best wear resistance. While under high load, PU-41 with high tensile strength was the best. This study revealed that the wear resistance was heavily dependent on the loads, which was crucial for improving the wear resistance of materials according to operation conditions.
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