By reducing the surface energy of particle and changing the surface polarity of particle, the main purpose of modification is to improve the affinity of particle to matrices and avoid aggregation of particles. 指出纳米粒子改性的目的在于降低粒子的表面能,改变粒子的表面极性,提高粒子与基体的亲和力,减少粒子间的团聚,促进纳米粒子在聚合物基体中的分散。