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We know that silicon dioxide (SiO2) is very abundant in nature. Sand, crystal, quartz sand, silica powder, diatomaceous earth, etc., the main components are SiO2; in synthetic silica, precipitated silica, fumed silica, etc., the main component is also SiO2. Like sand, microsilica and diatomaceous earth, these are natural products, some of them are applied directly without processing, and some are processed into the market, but the application fields of the products are very limited; precipitated silica and fumed silica are the most widely used chemically prepared silica products. Although the amount of precipitation silica is relatively large, the application field of fumed silica is wider. . In the market, the price of fumed silica products is also the highest (except as jewelry and collectible crystals), and the application fields involved are also the most extensive. Why is the price of fumed silica so high, but still become the darling of the market? This is mainly related to the unique synthesis process of fumed silica and the excellent performance of the product.
Overview of Fumed Silica
Fumed silica (CAS number 112945-52-5), also known as fumed silica because it is produced in a flame, consisting of tiny droplets of amorphous silica that fuse into branched Chain, chain-like, three-dimensional secondary particles, and then agglomerate into tertiary particles. The resulting powder has very low bulk density and high surface area. When used as a thickener or reinforcing filler, its three-dimensional structure leads to increased viscosity, thixotropic behavior.
Application of Fumed Silica
Application in paints and coatings
Fumed silica is widely used in paints and coatings as a rheological additive, which can effectively prevent the sedimentation and stratification of pigments and fillers, improve the weather resistance and scratch resistance of coatings, and improve the bonding strength between the coating and the substrate. .
Application in fertilizer and feed
Fumed silica has strong adsorption and hygroscopicity, which can promote the free flow of powders such as fertilizers and feeds, facilitate the transportation and storage of powders, and prevent them from getting wet.
Application in pesticides and medicine
Fumed silica has the characteristics of small particle size, large specific surface area, strong adsorption performance, and easy suspension. It can absorb a large number of water molecules in water and swell into extremely fine particles to form a stable suspension. Taking advantage of these properties, it can be used as a carrier for pesticide wettable powder, granules, water dispersible granules, as a dispersant and thickening agent for suspending agents; at the same time, adding fumed silica to medicines can be used as an anti-caking agent for medicines , drug carriers and excipients, so as to achieve the purpose of prolonging the efficacy.
Application in Adhesives and Sealants
The excellent reinforcing, thickening and thixotropic properties of fumed silica can prevent the precipitation of adhesives and sealants during storage and sag during curing, and improve their tear strength and bond strength.
Price of fumed silica
The price of fumed silica will vary with the production cost, transportation cost, international situation, exchange rate and market supply and demand of fumed silica. Tanki New Materials Co.,Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full range of customized services. If you are looking for fumed silica powder, please feel free to send an inquiry for the latest price of fumed silica.
Supplier of fumed silica
As a global supplier of fumed silica powders, Tanki New Materials Co.,Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (including boron carbide, aluminum carbide, titanium carbide, etc.), high-purity targets, functional ceramics and structural devices, and provides OEM services.