The difference between silica and anhydrous silica and the difference between the two in use（1）
Silica has surface hydroxyl groups, which is reflected in the molecule as bound water. This must be different from anhydrous silica.
1. Silica is used in colored rubber products to replace carbon black for reinforcement to meet the needs of white or translucent products. Silica also has super adhesion, tear resistance and heat resistance and aging resistance. Therefore, part of carbon black can also be replaced in black rubber products to obtain high-quality rubber products, such as off-road tires, engineering tires, radial tires, etc.
2. In agricultural chemicals, such as pesticides, high-efficiency spraying fertilizers, etc., the use of silica as a carrier or diluent can maintain a lasting effect, because it has high adsorption, easy suspension, good affinity and chemical Stability. Even in rain, washing and hot conditions, it can remain unchanged for a long time.
1. Main raw material ceramics and refractory materials for flat glass, float glass, glass products (glass jars, glass bottles, glass tubes, etc.), optical glass, glass fiber, glass instruments, conductive glass, glass cloth and special anti-ray glass, etc. Porcelain blanks and glazes, high silica bricks for kilns, ordinary silica bricks and silicon carbide, etc.
2. Raw materials or additives, fluxes of silicon metal, ferrosilicon alloy and silicon aluminum alloy, etc. Construction concrete, cementitious materials, road construction materials, artificial marble, cement physical property testing materials (ie cement standard sand), etc.
3. Raw materials such as silicon compounds and water glass, fillers for sulfuric acid towers, amorphous silica fine powder
4. Main raw materials of foundry sand, abrasive materials (sandblasting, hard abrasive paper, sandpaper, emery cloth, etc.)
5. High-purity metal silicon, optical fiber for communication, etc.
6. Can improve wear resistance
7. Filler (can improve the weather resistance of the coating)
8. In the food industry, it is mainly used to prevent powdered food from agglomerating and agglomerating to maintain free flow. Products such as spices and solid wine. (Example: milk powder)