To improve the interfacial properties between Co_3O_4 particles and the matrix resin and to prevent the nano-particles aggregating, the surfaces of Co_3O_4 particles were treated by grafting BMA on them.

• Co3O4粒子表面采用接枝处理的方法接枝上甲基丙烯酸丁酯来改善纳米粒子与有机树脂的界面性能和防止粒子间的相互团聚。