Studies on Tribological, Damping and Thermal Properties of Polyurethane/Polystyrene Interpenetrating Polymer Networks

By : Shoubing Chen, Tingmei Wang, Qihua Wang

Page No: 503-512

Abstract
A series of Poly (tetramethylene glycol) (PTMG)-based polyurethane (PU)/ polystyrene (PS) interpenetrating polymer network (IPN) composites were prepared. The tribological behaviors, damping properties and thermal stability of the IPN composites were studied systematically in terms of composition. Results revealed that the tribological properties of PU/PS composites under seawater improved with PU content increase. When the PU content more than 40%, the friction coefficient lower than 0.25. The damping properties were best when the PU content was 30% with the damping temperature range was approx 53°C. The PU/PS IPN composites showed higher thermal stability with the PS component increasing. It is expected that the PU/PS IPN composites may be used in the marine environment as lubricating and damping materials.

Authors :
Shoubing Chen, Tingmei Wang and Qihua Wang : State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.