The comprehensive effect of tensile strength and modulus on abrasive wear performance for polyurethanes. (May 2022)

• Record Type: Journal Article
• Authors: Ding, Caijun; Xing, Zeyu; Wang, Zehao; Qin, Zezhao; Wang, Jie; Zhao, Xiaoli; Yang, Xiaoniu
• Is Part Of: Tribology international. Volume 169(2022)
• Publication Date: 2022-05
• Subjects: Polyurethane -- Abrasive wear performance -- Comprehensive effect -- Wear mechanism; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2022.107459
• Languages: English
• ISSNs: 0301-679X

Abstract

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 mm 3 at 5 N load and 68.40, 53.67 and 42.34 mm 3 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. Highlights: Under lower normal load, the modulus dominates the abrasive wear performance. As the normal load increases, the tensile strength plays a key role in determining the wear performance. Tensile strength and modulus are competing factors that affect the abrasive wear performance of polyurethanes.