News

How to improve the dispersion and reactivity of Calcite powder through chemical modification?

Publish Time: 2024-05-07
Calcite powder is a common non-metallic mineral powder, and its dispersion and reactivity are crucial to its application effect. In order to improve the dispersion and reactivity of Calcite powder, chemical modification is a common method.

Chemical modification mainly uses chemical reactions to modify the surface of Calcite powder to improve its surface physical and chemical properties. Among them, surface chemical coating modification method is a commonly used method. This method uses the functional groups in the organic surface modifier molecules to adsorb on the surface of Calcite powder particles, or chemically react with the particle surface, thereby forming a new material layer on the particle surface. This new material layer can reduce the interaction between particles and improve the dispersion of particles.

Commonly used surface modifiers include coupling agents (such as silane, titanate, phosphate, etc.), higher fatty acids, silicone oil or silicone resin, water-soluble polymers, etc. These modifiers can react chemically or physically adsorb with the surface of Calcite powder to form stable chemical bonds or intermolecular forces, thereby changing the polarity and hydrophilicity of the surface of Calcite powder and improving its reactivity with organic or other inorganic substances. .

In addition to the surface chemical coating modification method, the precipitation reaction coating method is also an effective chemical modification method. This method uses a chemical precipitation reaction to precipitate and coat a new layer of material on the surface of Calcite powder particles, forming a dense coating layer. This coating layer can improve the dispersion and reactivity of the particles and enhance the bonding force between the particles and the matrix.

In short, the dispersion and reactivity of Calcite powder can be significantly improved through chemical modification, thereby expanding its application scope in various fields. In practical applications, appropriate modification methods and modifiers can be selected according to specific needs to achieve the best results.
×

Contact Us

captcha