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APS (nm) | Purity (%) | SSA (m2/g) | Bulk density (g/cm3) | Density (g/cm3) | Crystal | Color |
15nm | 99.5% | 600 | 0.05 | 2.2-2.6 | Spherical | White |
20 | >99.9 | 240 | 0.06 | 2.2-2.6 | Spherical | White |
50 | >99.9 | 200 | 0.09 | 2.2-2.6 | Spherical | White |
500 | >99.9 | 46 | 0.14 | 2.2-2.6 | Spherical | White |
1000 | >99.9 | 30 | 0.17 | 2.2-2.6 | Spherical | White |
Nano silica particles are characterized by small size, narrow particle size distribution, many micropores, large specific surface area, high hydroxyl content on the surface, and strong UV, visible and infrared reflectance. The results show that the specific surface area of Nano-SiO2 is large by BET method; there are a lot of hydroxyl groups and unsaturated residual bonds on the surface of nano-SiO2, which deviates from the steady-state SiO2 structure; the cary-5e spectrophotometer shows that nano-SiO2 has high reflectance to ultraviolet medium, long wave and visible light; omnisorp 100CX specific surface and porosity analyzer are used to measure the surface area The results show that the surface of p-type nano-SiO2 contains many nano-sized micropores with a porosity of 0.611ml/g.
Application: Coatings, plastics, colored rubber, magnetic materials, enamel, gypsum, batteries, pigments, adhesives, cosmetics, FRP, chemical fiber, plexiglass, environmental protection and many other fields
