Inorganic pigment dryer, coating machine, active machine, mechanical force modification

Release time:

2024-09-02 09:03

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Pigments are widely used, but their performance is affected by particle size, particle shape and dispersion stability in the use of the medium, so the pigment generally needs surface modification during the preparation process or before use. The surface modification of inorganic pigments can further improve the application performance and use effect of pigments, fully reflect their optical properties and pigment performance, and is one of the main measures to improve the quality of pigments.

The purpose of surface modification can be summarized as follows3 aspects: improve the characteristics of the pigment itself, such as tinting strength, hiding power, etc.; improve the performance, enhance the dispersion and dispersion stability of the pigment in the solvent and resin; improve the durability, chemical stability and processing performance of the pigment products,Compatibility of Pigment Particle Surface with Dispersion Medium.

The basic methods for pigment surface modification can be divided into physical and chemical methods, in which the physical method changes the grain size and crystal phase of the pigment, and the dispersant is introduced through adsorption. in pigment-Dispersant-Dispersion medium In this dispersion system, the pigment and the dispersant are combined by electrostatic adsorption. This effect is not strong and is absorbed.In the process of attachment-desorption, particle collision leads to flocculation, which affects the dispersion stability of the system,Chemical treatment must be introduced,By wrappingThe dispersant is more firmly fixed on the surface of the pigment particles.Grain size, coating and other processes can be processed by mechanical equipment honeycomb mill. Honeycomb mill is excellent in the field of deep drying, scattering and depolymerization, and is specially designed for powder production with strict requirements.

reference source: powder technology network. If there is infringement please contact delete!

 

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