Fumed silica
Characteristics of fumed silica fumed silica:
◇As a liquid thixotropic agent and thickener, it prevents precipitation and sagging;
◇Improve the suspension and dispersibility of pigment fillers in liquid systems;
◇Used as a dispersion and grinding aid;
◇Improve the corrosion resistance of the coating;
◇Improve powder fluidity and storage stability;
◇Improve powder charge and charge stability;
◇Improve water resistance;
◇Improve the scratch resistance of paint film;
◇Improve the vividness of colors;
◇Fixed special effects;
◇Improve the physical and mechanical properties of the paint film;
◇Improve paint film adhesion and flexibility;
◇Improve and strengthen the viscoelastic properties of rubber and elastomers;
◇Defoaming effect in defoaming agent;
◇Improve coating surface hardness and scratch resistance;
◇Prevent adhesion in films and elastomers;
◇As adsorbent and carrier;
◇Used for inkjet printing coating;
◇As a high-grade filler for dental materials;
◇As a catalyst carrier, it has remarkable thermal insulation and is used for low temperature and high temperature insulation.
| Item | Unit | F-150 | F-200 | F-300 | F-380 |
| SiO2 content | % | ≧99.8 | ≧99.8 | ≧99.8 | ≧99.8 |
| PH value | | 3.7-4.5 | 3.7-4.5 | 3.7-4.5 | 3.7-4.5 |
| Specifc surface | m2/g | 150±30 | 200±30 | 300±30 | 380±30 |
| 105℃ volatile mass fraction ≦ | % | 1.0 | 1.5 | 2.0 | 2.0 |
| Burning loss weight mass fraction wt ≦ | | 1.5 | 2.0 | 2.0 | 2.0 |
| 45um sieve residue | mg/kg | 250 | 250 | 250 | 250 |
| Appear ance density ≦ | g/l | 50 | 50 | 50 | 50 |
| Al2O3 mass fraction ≦ | mg/kg | 400 | 400 | 400 | 400 |
| TiO2 mass fraction ≦ | mg/kg | 200 | 200 | 200 | 200 |
| Fe2o3 mass fraction ≦ | mg/kg | 30 | 30 | 30 | 30 |
| Chloride mass fraction ≦ | mg/kg | 250 | 250 | 250 | 250 |
| Carbon mass fraction ≦ | % | 0.2 | 0.2 | 0.2 | 0.2 |
Applicaton:
Fumed SiO2 serves as a universal thickening agent and an anticaking agent (free-flow agent) in powders. Like silica gel, it serves as a desiccant. It is used incosmetics for its light-diffusing properties. It is used as a light Abrasive, in products like toothpaste. Other uses include filler in silicone elastomer and viscosity adjustment in paints, coatings, printing inks, adhesives and unsaturated polyester resins. It is also used in the production of cat litter box filler.
Fumed silica F-150 is mainly used for acidic silicone rubber, RTV silicone rubber (low moisture content) and neutral silicone rubber
Fumed silica F-200 is mainly used for high-temperature vulcanized silicone rubber, organic silicone defoamer, advance printing ink, powder coating, Pvc Resin, unsaturated polyester Resin thickening, thixotropic agent, pharmaceutical powder, tabular preparation, cosmetics etc.
Fumed silica F-380 is mainly used for silicone rubber, silicone grease and sealing materials of capacitance packaging with high transparency and high tear resistance.
If you have any demands for pigment such as Iron Oxide ,Titanium Dioxide ,Carbon Black,Powder Pigment,Chromium Oxide Green Pigment,Chrome Oxide Yellow etc,welcome to inquiry us.
Product Categories : Fumed Silica
