The technological innovation and optimization of fumed silica involves many key aspects, which together improve the performance of silica and broaden its application fields. The following is a detailed discussion on the technological innovation and optimization of fumed silica:

1. Technological innovation
Innovation in coating modification technology: Vapor phase method silica powder coating modification is an efficient material modification method. The principle is to convert the coating material into a gas phase at high temperature, and then transport its vapor to the surface of the silica powder to form a layer of coating. This coating not only improves the dispersion, stability and surface properties of silica, but also enhances its functionality in various fields. For example, it can improve the hydrophobicity, conductivity and stability of materials.
Innovation in technical route: In the production process of vapor phase silica, through continuous technological innovation and research and development, we have successfully broken through the use of dimethyldichlorosilane, hexamethyldisilazane and polydimethylsiloxane. The technology of surface modification of fumed silica has filled the gaps in domestic technology and products.

2. Technical optimization
Optimization of the production process: In the pre-treatment stage, by optimizing the purity and uniformity of raw materials, drying, screening and other means are used to ensure the quality of raw materials. During the carbonization stage, the temperature, carbonization speed and carbonization time are precisely controlled to obtain high-quality silica. In addition, the pickling and surface modification of the surface treatment stage are optimized to improve the dispersion and application range of silica.
Optimization of control parameters: In the production process of gas phase silica, key control parameters such as reaction temperature, reaction time, reaction gas flow rate and raw material concentration are optimized. Appropriate reaction temperature can improve the specific surface area and dispersion of silica, while appropriate reaction time can help control the quality of silica.

3. Expansion of application fields
With the continuous innovation and optimization of vapor phase silica technology, its application fields are also constantly expanding. Vapor-phase silica coating modification technology can be applied in various fields, including materials science, energy storage and conversion, environmental governance, etc. By improving the properties of the material, fumed silica has shown great application potential in many fields.

In summary, the technological innovation and optimization of vapor-phase silica covers many aspects such as innovation in coating modification technology, innovation in technical routes, and optimization of production processes and control parameters. These innovations and optimizations not only improve the performance of silica, but also broaden its application areas and provide strong support for the development of related industries.