Effect of SiO₂-bamboo fiber synergistic modification on friction and wear properties of epoxy resin matrix composites

In order to improve the friction and wear properties of epoxy resin (EP) matrix composites and prepare low-cost EP wear resistant materials, nano SiO₂ particles and bamboo fibers (BF) were used as fillers to prepare nano SiO₂-BF/EP composites. The friction and wear tester, dynamic thermomechanical analyzer and SEM were used to study the effect of nanoparticles and fibers on the wear resistance, thermodynamic properties and microstructure of the composites. The results show that after adding BF alone, the volumetric wear of BF/EP composite is significantly reduced by 71% compared with the pure EP under the same conditions; At the same time, the addition of nano SiO₂ and BF has a significant effect on the glass transition temperature and wear volume of nano SiO₂-BF/EP composite. The glass transition temperature is 11℃ higher than that of the pure EP, reaching 124℃. The volumetric wear is about 75.3% lower than that of the pure EP under the same conditions.