Silk black has a wide range of uses, and different products have different uses. It is used as a good reinforcing agent for synthetic rubber, and its reinforcing performance is second only to Carbon black, if ultrafinely refined and properly surface treated, is even better than carbon black. It is especially suitable for manufacturing white, colored and light-colored rubber products.
Used as thickener or thickening agent, blending agent for synthetic oils and insulating paints, deglossing agent for paints, thixotropic agent for electronic component encapsulation materials, precipitating agent for phosphor powder when coating fluorescent screens, color printing offset sheets Filler, release agent for casting.
Added into the resin, it can improve the moisture-proof and insulation properties of the resin.
Filled in plastic products to increase slip resistance and oil resistance.
Filled in silicone, it can be made into plastic that can withstand temperatures above 200℃.
Used in the paper industry as filler and surface furnish of paper.
Precipitated silicaIt is used in rubber products such as inner and outer tires of automobiles, dump trucks, trucks, tractors, forklifts, bicycles, etc., industrial belts, hoses, liners, rubber sheets, and strippers for grain processing. Silica is used to a greater or lesser extent in various rubber industrial products such as rubber rollers and rubber shoes.
Silk black can be used as a filling material in polyethylene, polypropylene, polybutylene, epoxy resin and other plastics, which can improve the elastic strength and wear resistance of plastics, as well as the thermal stability of hardness.
Used in cables, it can also improve the electrical insulation of cables. For example, methyl vinyl silicone rubber high-voltage lines must use fumed silica or high-quality precipitated silica.
It is often difficult to separate between two layers of plastic film, and the bag mouth is difficult to open when bagging, so silica is a very useful opening agent.
When PVC is used as home flooring material, if a certain amount of silica is added, the product’s hardness, elasticity, thermal denaturation and other properties can be improved.
Silk black is used as a sizing agent for paper, which can increase the whiteness and opacity of the paper, and improve the printability, oil resistance, abrasion resistance, feel and gloss.
Used for printing drawings, it can make the surface quality of the paper good, the ink is stable, and there are no cracks on the back; used in azid paper, it can produce high-quality blue drawings; used in copper paper, it can replace titanium dioxide; especially used in newsprint, Adding 1~2% white carbon black can make paperThe weight is reduced by 10%, which not only makes the paper thinner, but also improves its strength. In addition to preventing ink penetration and making printed text clear, it can also increase opacity.
Silk black has thixotropic properties. Adding a small amount of silica to the coating can eliminate droplet settling in the coating. In unsaturated polyester coatings, as long as 0.5~2% concentration of silica is added, the coating can be applied on a vertical surface at a density of 500g/m2 without droplets or wrinkles. Adding white carbon black to pigments can not only prevent the precipitation of pigments, but also improve the adsorption of pigments and dyes and improve dispersion.
When used as a filler in emulsion coatings, it can improve thermal stability. In order to meet the requirements for silica as matting agents for coatings and inks, special products for matting agents have been developed and produced abroad.
Adding 0.5% silica to printing ink has good printing effect, can eliminate the influence of undispersed ink penetration, improve the wash resistance of printing materials, and increase the gloss of colors.
In the manufacture of agricultural chemicals, such as pesticides, high-efficiency spray fertilizers, etc., silica is used as The carrier or diluent can maintain long-lasting effectiveness because it has high adsorption capacity, is easy to suspend, has good affinity and chemical stability, and can remain unchanged for a long time even under rain washing and hot conditions.
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