Application fields of precipitation silica

1. Precipitated silica (common grade)

Rubber and various auxiliaries have excellent compatibility, good dispersibility, few white spots and black spots, not only good reinforcement, wear resistance, slip resistance and adhesion, but also a good light color supplement. Strong materials, so all kinds of shoe soles, conveyor belts, ordinary rubber parts, tires, etc.

2. Precipitated silica (silicon rubber grade)

The masterbatch of ultra-fine silica for the manufacture of silicone rubber, applied to high temperature vulcanized silicone rubber (such as: buttons, transparent silicone rubber parts, high and low temperature and high pressure sealing rings, etc.); or room temperature silicone rubber (such as: glass glue, sealant) Wait)

3. Precipitated silica (feed grade)

It is suitable for feed additives such as mold inhibitor, acidifier, antioxidant, etc. It has good fluidity and outstanding adsorption capacity, which can not only accelerate the absorption rate of various liquid and oily substances, but also effectively improve the fluidity of powder products.

4. Precipitated silica (cots grade)

The specific surface area can reach 200 to 230, which can endow the hardness of rubber roller products, reaching 90-95 Shore. ) Excellent filling and reinforcing agent.

5. Precipitation method silica (pesticide grade)

As a carrier of dry powder pesticides, it has good compatibility with pesticide components, and has a very small pore volume to absorb pesticide components, thereby ensuring a long release of drug effects.

6. Precipitated silica (high dispersion type)

High-reinforcing, high-dispersion silica with excellent bonding and dispersing behavior gives tire tread composites high wear resistance, excellent rolling resistance and improved wet traction, used in "green tire" treads, can For high abrasion resistance, low rolling resistance and optimum wet grip.

7. Silica can be used as a filler material in polyethylene, polypropylene, polybutene, epoxy resin and other plastics, which can improve the elastic strength and wear resistance of plastics, as well as the thermal stability of hardness. It can also improve the electrical insulation of cables when used in cables. For example, methyl vinyl silicone rubber high-voltage wires should use fumed silica or high-quality precipitated silica. It is often difficult to separate the two layers of plastic films, and it is difficult to open the mouth of the bag when bagging, so white carbon black is a very useful opening agent. When PVC is used as a home floor material, if a certain amount of silica is added, it can improve the hardness, elasticity, thermal denaturation and other properties of the product

8. Silica can be used as a sizing agent for paper, which can improve the whiteness and opacity of paper, improve printability, oil resistance, abrasion resistance, hand feel and gloss. When used for printing drawings, the surface quality of the paper is good, the ink is stable, and the back is free of cracks; when used in azide paper, it can produce high-quality blue drawings; when used in coated paper, it can replace titanium dioxide; especially for newsprint, Adding 1 to 2% of white carbon black can reduce the weight of the paper by 10%, not only the paper is thin, but also the strength can be improved. In addition to preventing the penetration of ink and making the printed text clear, it can also increase the opacity.

9. Silica has thixotropic properties. Adding a small amount of silica in the coating can make the coating eliminate droplet sedimentation. In unsaturated polyester coatings, as long as 0.5 to 2% concentration of silica is added, the coating can be applied on a vertical surface at 500g/m2 without droplets and wrinkles. Adding white carbon black to the pigment can not only prevent the precipitation of the pigment, but also improve the adsorption of the pigment and dye, and improve the dispersibility. Improves thermal stability when used as a filler for emulsion coatings.

10. Silica is also used in various degrees and has various beneficial functions in pesticides, fire-fighting agents, adhesives, toothpaste and daily cosmetics.

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