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The factory lanch a new silica anticaking agent
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Carbon black is a white powder X-ray amorphous silicic acid and silicates in general , mainly refers to precipitated silica, fumed silica, silica gel, and the airgel fine , powdery synthetic also aluminum silicate and calcium silicate . White carbon is a porous material, the composition can be SiO2 · nH2O , where nH2O is in the form of the surface hydroxyl groups . Soluble in caustic alkali and hydrofluoric acid , insoluble in water , solvents and acids ( except hydrofluoric acid ) . High temperature, flammable, tasteless , odorless , with good electrical insulation.
Ingredient
White carbon black according to production methods can be divided into precipitated silica and fumed silica . Under normal conditions of fumed silica as a white amorphous silica floc half Transparent solid colloidal nanoparticles ( size less than 100nm), non-toxic, a huge surface area . All fumed silica nano-silica , 99% purity , particle size of up to 10 ~ 20nm, but the preparation process is complex , expensive ; precipitated silica and precipitated silica divided into traditional and special precipitated silica , the former refers to the sulfuric acid , hydrochloric acid , CO2 and water glass as the basic raw material to produce silica, which refers to the use gravity technology , sol - gel method, chemical crystal method , secondary crystallization France or reverse micelle microemulsion method for the production of silica and other special . Precipitated silica is mainly used for natural rubber and synthetic rubber reinforcing agent , toothpaste friction agent. Fumed silica in silicone rubber is mainly used as reinforcing agents , coatings and unsaturated resin thickener, fine silica gel, and aerogels matting agent for coating , a thickener, an opening like a plastic film .
Use
White carbon black products as a series of advantages , it can be widely used in many fields.
Rubber Products
White carbon black used in rubber products to replace the color carbon black reinforcement, white or translucent products to meet the needs . Silica also has superior adhesion , tear and heat aging resistance , so the black rubber products can replace part of the carbon black in order to obtain high-quality rubber products, such as off-road tires, OTR tires, radial tires and so on.
Agricultural chemicals
In agricultural chemicals , such as pesticides , fertilizers and efficient spraying , the use of silica as a carrier or diluent , to maintain a lasting effect because it has a high adsorption capacity , easy to suspension , a good affinity and chemical stability . Even in the rain , flushing and hot conditions, can still remain fairly constant .
Daily Chemical Products
Using silica as a filler and abrasive toothpaste transparent color and transparent , has good flexibility such toothpaste , dispersion , cream smooth, soft , abrasive , and do not abrasive toothpaste body ; it can remain Toothpaste potency and stability. In particular the nitride has good compatibility to avoid insoluble calcium salts generated as the abrasive drawbacks .
Cementing agent
A natural rubber or synthetic rubber adhesives , thixotropy and reinforcement provided , and because of its extensibility can also improve adhesion , high quality low price .
Anti-caking agent
White carbon can be used to increase the number of products in free-flowing , such as lawn fertilizers, fungicides, abrasive wheel , laundry bleaches, phenolic plastic methenamine , phenol and urea plastics , the manufacture of rubber sulfur and anticaking block mixture .
Filler paper
Paper made with silica fillers may improve the paper by ink resistance and mechanical strength , increased whiteness, reduced unit weight . Paper can effectively achieve lighter, lower production costs, improve paper performance.
But can also be used in fire fighting agents, feed, cosmetics , matting agents , pigments, paints and many other industries.
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