1. Paint industry
The refractive index of amorphous silica is 1.457, which is similar to that of conventional resin coatings. Therefore, amorphous silica is the first choice for high-grade coating matting agents. It has good optical properties when used in varnishes, and can produce matt and matting effect.
As we all know, wind power is an environmentally friendly green new energy source. The adhesive used on the blades is a strong polar epoxy resin system. The blades are large in size and large in cross-sectional area, so the adhesive performance and strength are extremely required. High, high viscosity, anti-sag performance and anti-settling performance requirements. Since epoxy resin is a resin system with strong polar groups and strong polarity, hydrophilic fumed silica is generally used, which is prone to solvent-based effects, that is, just after dispersion, the viscosity and suspension effect are very good. , but placed for 7-10 days, the polar groups destroy the hydrogen bonds forming the network structure, resulting in the cracking of the hydrogen bonds, thinning, no thixotropy, filler precipitation and other problems. Therefore, it is recommended to use strong adhesives for wind blades. Hydrophobic modified nano-scale fumed silica, strong stability, avoiding solvent effect.

2. Rubber industry
Silica is widely used as an environmentally friendly rubber reinforcing agent. Silicone rubber has excellent properties such as high temperature resistance, insulation, heat insulation, chemical resistance, and anti-pollution. It is irreplaceable in the fields of national defense industry, architectural decoration, and aerospace effect.
When it is used as tire tread reinforcement, it can reduce rolling resistance while maintaining excellent wet skid resistance. It can also save fuel and reduce vehicle exhaust emissions. At the same time, rolling resistance can be reduced by about 30%. It is a "green tire" important raw materials.
After the AMI modification of silica particles, the interaction between particles is reduced, and the agglomeration is reduced. When it is used for doping rubber, it can promote the vulcanization of rubber to a certain extent, and the rubber molecular chains are arranged more orderly.

3. Daily life
In recent years, superabsorbent resin is a new type of polymer fine chemical product, which is widely used in industrial products, daily hygiene products, medical treatment, agriculture, civil engineering and other fields, especially the demand for daily hygiene products and agriculture is increasing . Super absorbent resin has the functions of small particle size, high salt water absorption rate, fast absorption speed, and less monomer residue. It is commonly used in daily hygiene products including baby diapers, adult diapers, ultra-thin diapers, sanitary napkins, pet pads, nursing pads , absorbent paper, dust-free paper, toothpaste, etc. In the production process of baby diapers, diapers, and sanitary napkins, the quantification of superabsorbent resin is a key link. The role of fumed silica in the water-absorbent resin is to increase the fluidity of the water-absorbent resin, prevent caking, facilitate the flow of the super-absorbent resin in the pipeline, avoid pipe blockage, and improve production efficiency.

4. Biological filtration
Biofiltration is a typical air pollution control process for VOCs. The mass transfer of hydrophobic VOCs to biofilms is limited, resulting in less efficient removal of biofilms. In order to enhance the migration of hydrophobic organic matter, adding hydrophobic fumed silica to the biofilter can remove pentane and the like.

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