Precipitation method silica and matting powder (especially silica matting powder) have a wide range of applications in industry. The following is their relevant information and application areas:
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1. Precipitation method for silicon dioxide
Precipitation method silica is a white amorphous powder prepared by chemical reaction, with the chemical formula SiO ₂ · nH ₂ O. The production process usually uses sodium silicate and sulfuric acid as raw materials, and adjusts the particle size and specific surface area of the product by controlling the reaction conditions (such as temperature, pH, etc.). Precipitation method silica has the following characteristics and applications:
Physical and chemical properties: Precipitation method silica has high specific surface area, porosity, good chemical inertness, and electrical insulation.
Application areas:
Rubber industry: used as a reinforcing agent for rubber products such as shoe soles, tires, etc.
Coatings and inks: used as matting agents and thickeners to adjust the glossiness and rheological properties of coatings.
Toothpaste: As an abrasive and thickener, it provides cleaning and stabilizing effects.
Food and medicine: used as anti caking agents and flow aids to improve the flowability and stability of powders.


2. Matte powder (silica matte powder)
Matte powder is an additive used to reduce the surface glossiness of coatings or materials, and its main component is usually silicon dioxide. The principle of extinction powder is to form micro concave convex structures in the coating through its tiny particles, causing diffuse reflection of light and reducing gloss. The following are the main characteristics and applications of matting powder:
Extinction principle: The particle size of the extinction powder directly affects the extinction effect, and the larger the particle size, the more significant the extinction effect.


Application areas:
Coatings industry: used for architectural coatings, wood coatings, automotive coatings, etc., providing matte or semi matte effects.
Plastic products: used for home appliance casings, car interiors, etc., to adjust the glossiness of plastic surfaces.
Ink and leather treatment: used for printing ink and leather surface treatment, providing a matte effect.
Product type: Common extinction powders include precipitation method silica extinction powder and gas-phase silica extinction powder, among which precipitation method silica extinction powder is widely used due to its price advantage.


3. The relationship between precipitated silica and extinction powder
Precipitation method silica is one of the main raw materials for extinction powder. Through specific surface treatment and particle size control, silica extinction powder with excellent extinction performance can be produced. For example, Degussa's ACEMATT series extinction powder is a typical application of precipitated silica.
Precipitation method silica and extinction powder have become indispensable materials in modern industry due to their unique physical and chemical properties and wide application fields.