Improvement of thermal and abrasion resistance performance of polyphenylene sulfide composite through 3-mercaptopropyl trimethoxysilane treatment of carbon fiber and graphene oxide fillers

Abstract

The aim of this study was the improvement of the thermal conductivity and tribological properties of polyphenylene sulfide (PPS) with carbon fiber (CF) and graphene oxide (GO) fillers. Whereas CF reduce the mechanical strength of PPS, 3-mercaptopropyltrimethoxysilane (MPTMS)-treated CF improve the interfacial adhesion properties of fillers and PPS matrices, which increase the mechanical properties of composites. The improved thermal and mechanical properties of composites were confirmed via diffraction scanning calorimetry, dynamic mechanical analyzer, and wear test. The silane-modified PPS/20M-CF/5M-GO composite has a thermal conductivity of 0.323 W/m•K, which is 175% greater than that of the neat PPS composite. The friction coefficient has decreased from 0.236 to 0.176 and the specific wear rate has decreased from 1200 to 300 E−07 mm3/N•m.