The difference between silica and anhydrous silica
White carbon black has surface hydroxyl groups present, which are reflected in the molecules as bound water. This must be a different substance from anhydrous silica
The Use of White Carbon Black
1. White carbon black is used in colored rubber products to replace carbon black for reinforcement, meeting the needs of white or semi transparent products. Silica also has super adhesion, tear resistance, heat resistance and aging resistance, so it can also replace part of carbon black in black rubber products to obtain high-quality rubber products, such as off-road tires, engineering tires, radial tires, etc.
2. In Agricultural chemistry products, such as pesticides, high-efficiency fertilizers, etc., white carbon black can be used as a carrier or diluent to maintain a lasting effect, because it has high adsorption, is easy to suspend, and has good affinity and chemical stability. Even under rain, flushing, and hot conditions, it can remain unchanged for a long time.
Use of silica (Baidu Baike http://baike.baidu.com/view/27254.html ）:
1. The main raw materials of 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 radiation resistant glass, the embryo and glaze of ceramic and refractory materials, the raw materials of high silica bricks, ordinary silica bricks, and silicon carbide for kilns
2. Raw materials or additives for silicon metal, silicon iron alloy, silicon aluminum alloy, etc., flux building concrete, cementitious materials, road building materials, artificial marble, cement physical performance testing materials (i.e. cement standard sand), etc
3. Raw materials such as silicon compounds and water glass, fillers for sulfuric acid towers, and amorphous silica micropowders
4. Main raw materials and grinding materials for casting sand (sandblasting, hard grinding paper, sandpaper, sandcloth, etc.)
5. High purity metal silicon, communication optical fibers, etc
6. Can improve wear resistance
7. Filler (can improve the weather resistance of the coating)
8. In the food industry, it is a kind of food additive that is mainly used to prevent powdery food from agglomerating to maintain free flow, or to absorb liquid spices, oils, vitamins, etc. to make them into powder, such as powder fats, solid spices, solid wine, and other products. (Example: Milk powder)
9. Transparent, colored, and opaque toothpastes using white carbon black as filler and abrasives. These toothpastes have good flexibility, dispersibility, smoothness, softness, and good abrasiveness, without abrading the toothpaste tube; It can maintain the stability of medicinal toothpaste. Especially with good compatibility with nitrides, it can avoid the disadvantage of calcium salts as abrasives that produce insoluble salts.
10. It is used in adhesives made of natural rubber or synthetic rubber to provide Thixotropy and reinforcement. At the same time, because of its extensibility, it can also improve the adhesion, with high quality and low price.