Friction and Wear Behaviors of Two Kinds of Hydroxyl-Terminated Polydimethylsiloxane-Modified PU/EP IPN Composites Under Dry Sliding Conditions

• Published in: Tribology letters Vol. 43; no. 3; pp. 319 - 327
• Main Authors: Chen, Shoubing, Wang, Qihua, Wang, Tingmei
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.09.2011; Springer Nature B.V
• Subjects: Castor oil; Chemistry and Materials Science; Coefficient of friction; Corrosion and Coatings; Drying oils; Electron microscopes; Epoxy resins; Friction; Interpenetrating networks; Mapping; Materials Science; Mechanical properties; Nanotechnology; Original Paper; Photoelectrons; Physical Chemistry; Plutonium; Polydimethylsiloxane; Polymer matrix composites; Polyurethane resins; Scanning electron microscopy; Sliding; Surfaces and Interfaces; Theoretical and Applied Mechanics; Thin Films; Three dimensional; Tribology; Wear; Polymers; Self-lubricating composites; Rolling-contact fatigue
• ISSN: 1023-8883; 1573-2711
• DOI: 10.1007/s11249-011-9816-4

In this study, a systematic investigation on the tribological properties of two kinds of hydroxyl-terminated polydimethylsiloxane (HTPDMS)-modified castor oil-based polyurethane/epoxy resin (PU/EP) interpenetrating polymer network composites (IPN) was carried out through a pin-on-disk arrangement under dry sliding conditions. Experimental results revealed that the incorporation of HTPDMS can significantly improve the friction and wear properties of PU/EP IPN. Further, it was found that both the friction coefficient and wear loss decreased with increasing content of HTPDMS. The worn surface of the PU/EP IPN matrix and the modified composites were analyzed using scanning electron microscope and 3D noncontact surface-mapping profiler. The as-prepared and worn surfaces of the HTPDMS-modified PU/EP IPN were also investigated using X-ray photoelectron spectroscopy. The mechanisms for the improvement of tribological properties were discussed.