纳米粉体的表面改性研究进展

Progress on Surface Modification of Nano-powder

表面改性处理通过各种表面添加剂与纳米微粒表面发生化学反应和物理作用,改变微粒的表面状态,从而改善或改变粉体的分散性,改善耐久性、耐候性,提高表面活性,使纳米微粒表面产生新的物理、化学、光学特性,适应不同的应用要求,从而大大提高材料的附加值。文章主要介绍表面包覆改性、局部化学改性、机械化学改性、胶囊化改性、高能表面改性以及沉淀反应表面改性方法的研究进展。

Through a variety of surface additives and nano-particles surface chemical reactions and physical role Surface modification changed the surface state of particles and improved or changed the dispersion of powder and improved the durability, weather resistance, increased surface activity, so that nano-particles surface generated new physical, chemical, optical properties, which made it adapt to different application requirements, thus significantly increased the added value of the material. The paper described the progress on modification of the surface coating and partial chemical modification, mechanical and chemical modification, capsule-based modification, high-energy surface modification and surface modification method of precipitation reaction.