Friction and wear behavior of the polyurethane composites modified by bishydroxyl-terminated polydimethylsiloxane
Abstract
Purpose
A series of polyurethane/bishydroxyl-terminated polydimethylsiloxane composites (PU/BTPDMS) were prepared. The effect of BTPDMS content on the tribological properties of the PU/BTPDMS composites was studied. The paper aims to discuss these issues.
Design/methodology/approach
The composites were prepared by a pre-polymer method. The properties were measured with Fourier transform infrared spectroscopy (FTIR), thermogravimetry analysis (TGA). The friction and wear characteristic of the composites were examined with MRH-3 friction-abrasion testing machine. The worn surfaces of the composites were investigated by scanning electron microscopy (SEM).
Findings
Experimental results indicated that the polyurethane modified with 7 percent BTPDMS had better tribological property than pure PU and other PU/BTPDMS composites in the present study. It exhibits lower coefficient of friction (COF) and lower wear rate value, especially under water lubrication.
Originality/value
The polyurethane was synthesized by a pre-polymer method combination with chemical modification.
Keywords
Acknowledgements
The authors would like to acknowledge the financial support of the National Science Foundation for Distinguished Young Scholars of China (Grant No. 51025517), the Innovative Group Foundation of NSFC (Grant No. 50721062), the financial support of the National 973 project of China (2007CB607606) and the National Defense Basic Scientific Research Project (A1320110011).
Citation
Wang, T., Zhao, G. and Wang, Q. (2013), "Friction and wear behavior of the polyurethane composites modified by bishydroxyl-terminated polydimethylsiloxane", Industrial Lubrication and Tribology, Vol. 65 No. 6, pp. 472-479. https://doi.org/10.1108/ILT-06-2011-0048
Publisher
:Emerald Group Publishing Limited
Copyright © 2013, Emerald Group Publishing Limited