Aluminum nitride superfine dispersing machine, active coating machine, shaping stirring mill

Release time:

2024-09-13 09:01

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aluminum nitrideThere are many surface modification technologies of powder, the basic principle is to carry out the corresponding physical adsorption or chemical treatment on the surface of the powder.aluminum nitrideparticle coating or forming a thin reaction layer, preventingaluminum nitrideHydrolysis of the powder with water.

The main methods are coating modification method, surface chemical modification method, heat treatment method and so on.

1. Coating modification method

Coating modification is a traditional modification method that has been applied for a long time and is based on inorganic or organic compounds.aluminum nitrideThe surface of the powder is coated to weaken or shield the agglomeration of the particles, and because the coating produces steric repulsion, it is very difficult for the particles to reunite, so as to achieve the purpose of surface modification. Modifiers for coating modification include surfactants, inorganics, hyperdispersants, etc.

2. Surface chemical modification

Surface chemical modification is accomplished by chemical reaction or chemisorption of the surface modifier with the particle surface. The long chain polymer grafted on the surface of the powderThe long chain containing hydrophilic groups in the polymer acts as a three-dimensional barrier in the water medium by hydration extension.aluminum nitrideThe dispersion stability of powder in the medium depends not only on electrostatic repulsion but also on steric hindrance.The effect is very obvious.

3Other modification methods

Other modification methods are also moreFor example, by high-energy treatment, ultrasound, encapsulation modification, etc. can also be used.aluminum nitridePowder surface modification. Usually these methods are combined with other methods, the surface modification of the powder is better..

modified equipment

Honeycomb millCM continuous powder surface modification equipment is the current set of mechanical force chemical, physical effects, chemical effects at the same time.Deep drying, depolymerization reduction, modified coating modification,sphericityand other functions. The advantages are as follows:

1) On the basis of the optimization of the equipment structure, the line speed of 110 m/s is driven by a strong air flow, so as to achieve a strong kneading depolymerization reduction ability and realize the dispersion of individual powder particles;

2) Inside the stator with special groove design, the shear force, friction force and centrifugal force generated by the vortex formed by wind pressure and wind speed quickly modify the powder into a spherical shape, and the powder is covered with the modifier in a boiling and rotating state;

3) The whole system can use computer and artificial intelligence technology to carry out on-line precise measurement and automatic control of the main parameters and modifier dosage, in order to achieve surface modification in the particle surface of the single molecular layer adsorption, stable product quality and convenient operation;

4) The modifier is an atomized state and powder in the modified cavity winding combination to form a single-layer nano-coating film, reducing the amount of modifier;

5) On the basis of the structure and design principle, the honeycomb mill greatly meets the requirements of the current high-end powder for material pollution. Such as thermal conductivity, flame retardant, hot new energy positive and negative materials, can be tailored to hard alloy, stainless steel, tungsten carbide spraying and zirconium aluminum ceramic materials.

6) The whole system is fully automatic negative pressure operation, which greatly reduces labor intensity and reduces environmental emissions caused by powder pollution.

The perfect combination of core ultra-fine powder and modifier and the application of composite powder. Preparation of multi-functional, multi-component, more stable ultrafine composite particles.

Reference source: Baidu Library. If there is infringement please contact delete!

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