White Carbon Black/Hydrophilic Fumed Silica Hjsil 200 98% white powder HC18 HC

hydrophilic fumed silica 200 with CAS 7631-86-9

Application of Fumed Silica in Polymer Industry

1. Rubber

The strength can be increased by up to 40 times, the yield point modulus can be increased by about 10 times, and the elongation and creep properties can also be significantly improved. Its reinforcing effect fully reaches the level of carbon black and overcomes the black pollution of carbon black.

2. Sealants and adhesives

It can be used as a thickener and thixotropic agent to increase the bonding strength, ensure free flow, prevent caking, sag, collapse, and sag during curing, maintain transparency, reinforce, and resist shearing.

3. Plastic

It can improve the compactness, smoothness and wear resistance of plastic products. Through proper surface modification, the purpose of simultaneously strengthening and toughening plastics can be achieved. Through a special method, a polyethylene composite material with high wear resistance and high hardness can be obtained.

4. Thixotropic polyester and gel coat resin

It can make the thickness of the product uniform and the shrinkage small, and at the same time reduce the flow and dripping of r resin, reduce the waste of resin, and protect the production environment.

5. Atomic ash

It can be used as anti-settling agent with good anti-settling effect and excellent thixotropy.

6. Paint

Anti-caking, anti-sagging, emulsifying, matting, suspending, thickening and thixotropic properties are available.

7. Optical fiber

It can protect the surface of the optical fiber from moisture erosion, and improve the fatigue resistance and aging performance of the optical fiber.

8. Other

It can be used as a tableting aid in the pharmaceutical industry, a carrier of active ingredients, a carrier of high-efficiency pesticides, a polishing agent for semiconductor silicon wafers, and an anti-caking agent for powder materials...

Fumed white carbon black (scientific name fumed silica) is a fine and special amorphous powder material obtained by hydrolyzing chlorosilane at high temperature with an oxygen-hydrogen flame. The average primary particle size is about 7-40 nanometers. The particle size is about 200-300 nanometers, the specific surface area is 50-380m2/g, the product has high purity, and the SiO2 content is not less than 99.8%. It is a multi-functional additive and is widely used in the coating industry. , extinction, anti-sinking and other functions. Fumed silica generally has two types of products: hydrophilic and hydrophobic, among which the hydrophobic type is obtained by surface chemical treatment using the hydrophilic type.