纳米氧化镁粉体表面改性技术的研究进展

Progress on Surface Modification Technology of Nanometer Magnesia Powder

简述了纳米氧化镁表面改性的原因,并对纳米氧化镁的表面改性方法(物理改性和化学改性法):即表面包覆改性法、表面化学改性法、机械力化学改性法、沉淀反应改性法、外膜层改性(胶囊)法、和高能表面改性法进行了概述。着重介绍了表面活性剂、偶联剂在纳米氧化镁表面改性方面的应用,并对纳米氧化镁改性方面的研究提出了建议。

The main purpose of modification is to reduce the surface energy, change the surface polarity of particle,improve the affinity to matrices and avoid aggregation of particle. The reason of surface modification of nanometer magnesia was discussed and the methods of surface modification of nanometer magnesia：the surface coating modification, chemical surface modification, mechano- chemistry modification, precipitation reactiori surface modification,outer film（capsule） modification and highe nergy surface modification were outlined physically and chemically. The application of modifiers in nanometer magnesia was introduced in details, such as surfactants,couplingagents. The suggestions of developing surface modification of nanometer magnesia was also putforward.