| 專利摘要 | A method for preparing a wear-resistant hybrid, includes (A) providing nano-silica with hydroxyl groups on its surface to react with an isocyanate-based silane to form silica with silyl groups; (B) subjecting the silica with silyl groups to a hydrolytic condensation reaction by using a sol-gel technology to form highly bifurcated Si-HB nanoparticles with hydroxyl groups; (C) providing a diisocyanate to react with a polyol to form a urethane pre-polymer; and (D) subjecting the Si-HB nanoparticles with hydroxyl groups to an addition reaction with the urethane pre-polymer and with a chain-extending reagent to form a hybrid of Si-polyurethane (PU/Si-HB), whereby a wear-resistant hybrid of Si-polyurethane is prepared. |