Aluminum powder coating machine, ultrafine dispersion machine, active coating machine

Release time:

2024-09-24 09:14

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As an important inorganic pigment, pigment aluminum powder is widely used in coating industry. However, due to its high surface energy, easy oxidation, easy agglomeration and other shortcomings, making its practical application there are certain restrictions. In order to improve these problems and improve the dispersion, stability and weather resistance of aluminum powder in coatings, surface coating modification is needed..

The methods of surface coating modification of pigment aluminum powder mainly include physical method and chemical method. Physical methods mainly include mechanical coating, vacuum evaporation deposition, etc., and a protective film is covered on the surface of aluminum powder by physical means. The chemical law is to generate a layer of chemically bonded coating on the surface of aluminum powder through a chemical reaction.-Gel method, chemical vapor deposition, solution impregnation method, etc.

In the process of coating modification, the choice of coating agent is very important. Common coating agents are inorganic(such as silica, alumina, titanate, etc.) and organic (such as polymers, surfactants, coupling agents, etc.). Inorganic coating can improve the high temperature resistance and chemical stability of aluminum powder, while organic coating can improve the dispersion and wettability of aluminum powder in the coating. The principle of coating modification is mainly through the physical or chemical interaction between the coating agent and the surface of aluminum powder to form a uniform, dense and stable coating layer. This coating layer can effectively isolate the direct contact between the aluminum powder and the external environment, and prevent the aluminum powder from being oxidized, corroded and agglomerated. The coating layer can also improve the compatibility and dispersion of aluminum powder in the coating, and improve the stability and decoration of the coating.

Followed by the coating equipment, industrial large-scale production of commonly used vertical modification equipment"Honeycomb mill" for processing,Honeycomb mill is a special equipment for the modification and production of functional materials. It can simultaneously realize grinding, drying, sorting, and surface chemical treatment with powder, and at the same time dry and depolymerize wet grinding filter cake and slurry. In general, according to the characteristics of the filler, more than two kinds of coating media can be applied, and the coating rate can reach99.2%, the activation rate was 99.8%. The minimum treatment capacity is 0.05 tons/hour, the maximum is 15 tons/hour, and the maximum amount of water evaporation is 3 tons/hour. Is low energy consumption and environmental protection of industrial processing machinery.

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