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Fumed silica - application in various industries THREE

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Yan (dye)
Although organic pigments (dyed) have bright colors and strong tinting strength, they are generally inferior to inorganic pigments in light resistance, heat resistance, solvent resistance and migration resistance. The surface modification treatment of organic pigments (dye) by adding fumed silica not only greatly improves the anti-aging properties of pigments, but also improves the brightness, hue and saturation. It is comparable to imported high-end products, greatly expanding the grade and application range of organic pigments.

Ceramic
The use of fumed silica instead of nano-A1203 added to 95-ceramic can act as both a nanoparticle and a second-phase particle, which not only improves the strength and toughness of the ceramic material, but also increases the hardness and elasticity of the material. Modulus and other properties, the effect is more ideal than adding A1203. The composite ceramic substrate is made of fumed silica, which not only improves the compactness, toughness and smoothness of the substrate, but also greatly reduces the sintering temperature. In addition, the use of fumed silica in ceramic filters, corundum balls and other ceramic products is also very significant.

Sealant, adhesive
Sealant and adhesive are important products with large quantity, wide surface and wide application range. It requires optimum viscosity, fluidity, and cure speed. China's products in this field are relatively backward, and high-grade sealants and adhesives are imported. Foreign products in this field have used nano-materials as modifiers, and fumed silica is the preferred material. It is mainly coated with an organic material on the surface of fumed silica to make it hydrophobic. Add it to A silica structure is formed quickly in the sealant, that is, the nano-Si0X small particles form a network structure to inhibit the colloidal flow, accelerate the curing speed, and improve the bonding effect. The gas-phase white carbon black particles have a small ruler and thus increase the sealing and prevention of the product. Permeability.

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