中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心知识库

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 1PN 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 degrees C. The PU/PS IPN composites showed higher thermal stability with the PS component increasing. It is expected that the PU/PSIIPN composites may be used in the marine environment as lubricating and damping materials.