Magnesium oxide coating modification machine coating equipment Wanrong equipment honeycomb mill

Release time:

2024-10-10 09:44

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The modification of magnesium oxide refers to the modification of the surface of magnesium oxide by physical, chemical or combined treatment to improve its physical properties, chemical properties and heat resistance, so as to broaden its application fields and improve its application value.

1. modification method

1. Chemical treatment

ion exchange：The surface of magnesium oxide can form an ion adsorption layer with other substances through ion exchange, thereby changing its surface properties.

chemical deposition：The surface properties of magnesium oxide are modified by depositing a thin film on its surface. The surface of magnesium oxide after chemical deposition will be improved in terms of heat resistance, mechanical properties and chemical stability.

surfactant modification：The principle of surfactant modification is to use its own group to produce physical or chemical adsorption with the surface of magnesium oxide, to cover the surface of active magnesium oxide and reduce the surface tension.

2. Physical treatment

Drying treatment：The moisture on the surface of the magnesium oxide is removed, so that the surface becomes more dry, thereby enhancing the physical properties and heat resistance of the magnesium oxide. Commonly used drying methods include drying, vacuum drying, low temperature drying, etc.

Heat treatment：The surface of magnesium oxide is heated to a certain temperature, thereby changing its surface crystal structure and properties. Commonly used heat treatment methods include high temperature calcination, nitriding treatment, etc. The surface of magnesium oxide after heat treatment will be improved in terms of hardness, density, heat resistance, etc.l.

3. Combined processing

Chemical and physical treatments can be combined to form a combined treatment to achieve a more comprehensive surface modification. For example, the magnesium oxide-based composite material can be prepared by chemical method, and then the surface of the composite material can be sintered by heat treatment, so as to achieve better surface modification. This combination treatment can greatly improve the mechanical strength and chemical stability of magnesium oxide.

  • modified equipment

Modified process through mechanical equipment"Honeycomb Mill"Honeycomb mill is a kind of mechanical compound modification machine, the biggest feature is set drying, compound modification and dispersion treatment and spheroidization four functions in one, is a real high degree of continuous powder compound modification machine, but also has the characteristics of compact structure, small volume, simple operation, stable operation, low labor intensity, low noise and so on. It is mature and stable in simplifying the powder modification process, improving the quality of powder modification and reducing the cost of powder modification. Under general conditions, honeycomb mill can be applied at the same time more than two kinds of coating medium, coating rate can reach99.2%, the activation rate was 99.8%.

3. modification effect

Improve dispersibility: The dispersibility of the modified magnesium oxide in the polymer matrix is improved, the particle distribution is more uniform, and the aggregation of particles is reduced.

Enhanced interfacial interaction: the modified magnesium oxide surface can introduce chemical functional groups compatible with the polymer matrix, thereby enhancing the interfacial interaction between the filler and the matrix, and improving the mechanical properties and thermal stability of the composite.

Improve corrosion resistance: Improve corrosion resistance in the modified coating material, enhance the adhesion between the coating and the substrate, and reduce peeling and cracking. Improve the quality of the overall coating, enhance flame retardant performance, catalytic efficiency, adsorption capacity, etc.

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