Abstract: Composites of a thermotropic liquid crystal polymer (TLCP), phenol formaldehyde (PF), and silane coupling agent KH550 or KH560 treated graphene oxide were prepared via melting extrusion. The mechanical properties and friction and wear properties of the composites were studied. The abrasion surface of the composites was observed using scanning electron microscope. When graphene oxide was treated with KH560, the volume wear rate of the composites decreased by 20.6 % and 23.1 % at 150 ℃ and 250 ℃, respectively, the impact strength was increased by 18.6 %.

Key words: graphene oxide, thermotropic liquid crystal polymer, phenol formaldehyde, hybrid composite, mechanical property, friction property