An interfacial polymerization method for polyacrylate resin was adapted to fabricate nanocomposites with nano-SiO2 particles via in situ polymerization. The tribological behaviors of the nano-SiO2 nanocomposites are briefly discussed in terms of types of functionalization and nanoparticle loading. Nano-SiO2 functionalization with three silanes improved the nanoparticles interfacial interaction and compatibility in the nanocomposites, resulted in lower friction coefficient and wear mass. And the results of DSC also testified that. The wear mass and friction coefficient of the nanocomposite containing 3 wt% nanoparticles with KH570 silane are 50.8mg and 0.20, respectively. Results of RCA show that the incorporation of the nano-SiO2 into the polyacrylate resin improves the scratch resistance significantly. Results of SEM indicate that the neat polyacrylate resin is dominated by adhesive wear, going with tearing resin, while all nanocomposites containing 3 wt% nanoparticles with silane are dominated by particle adhesive, going with soft adhesive wear.