Nanometer silica powder

  Nanometer silica powder (nm-SiO2) is a new kind of inorganic materials, because of its extra small size (1 to 100 nanometer). It has many special characteristics; such as big surface volume, quanta tunnel, and so on. So all such properties makes it different from other materials. It can be widely used in electronic encapsulation, polymer of macromolecule, rubber, plastics, coating, paint, adhesive, functional fiber, cosmetics and many more applications. YUDA has researched to manufacture colloidal silica power from colloidal silica since 1998, and put it into main products in 2000. Because of its especial technique and material, the nanometer silica powder has different capabilities from others. For example, its impurity is lower, its particle size is smaller(10-20nm), its configuration is more compact, etc. YUDA can modify the particles surface, than lets the powder easing to disperse. Therefore it is helpful to be used. YUDA has applied its patent in China. Its main capabilities as following: SiO2%wt,dry                                                ≥98.0% Particle sizenm                                               ≤30 Specific surface aream2/g                                200 Moisture110,2h,wt                                          ≤5% Loss on Ignition900,2h,wt                                 ≤2% Rocking density(g/cm3)                                   ≤0.05 PH(4% water dispersant)                                   4-6