The preparation of gas-phase nanomaterials is a method of directly using gas, or converting substances into gas through various means, so that they undergo physical changes or chemical reactions in the gaseous state, and finally condense and grow to form nanoparticles during the cooling process. This method can be used to prepare nanopowders with high purity, good particle dispersibility, narrow particle size distribution, and small particle size.

Fumed silica can meet the personalized and diversified product needs of downstream customers, especially in the field of functional additives in the coating industry. Research breakthroughs and experimental progress have been made.

Fumed silica, also known as fumed silica, is produced by high-temperature hydrolysis of halosilanes (such as methyl silicon trichloride and silicon tetrachloride) in a hydrogen and oxygen flame to generate silicon dioxide particles, which are then quenched. The particles are subjected to post-treatment processes such as aggregation, separation, and deacidification to obtain products with a purity of more than 99.8%. According to different surface chemical groups, they can be divided into non-treated (hydrophilic) and treated (hydrophobic) types.

In liquid systems, fumed silica has the functions of thickening thixotropy, rheology and thixotropy regulation, anti-sagging, anti-settling, corrosion resistance, and improving the mechanical properties of paint films and coatings; in powder coatings, fumed silica and fumed nano-alumina can both play a role in aiding flow. In general, fumed nanomaterials are important additives and functional additives in the coatings industry. They play their functions and roles in the production and storage, construction and coating of coatings, and dry film performance.