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Electrostatic atomization is mainly used in the atomization process of spray coatings. In electrostatic spraying, the paint droplets are broken into fine particles under the action of a high voltage electric field, a phenomenon known as electrostatic atomization.

Under the action of a high-voltage electric field, various dielectric substances in the coating will appear positive and negative ion clusters and positive and negative polymer clusters, which move and gather in the direction of the anisotropic electrode. Instead, the paint droplets are split into two smaller particles, which is the process of electric field fragmentation, also known as electrostatic atomization.

The electrostatic atomization process is carried out in the early stages of spraying paint from the sharp edge of the spray nozzle or spray ring. The higher the voltage applied to the spray gun, the stronger the cracking effect of the electric field and the better the electrostatic atomization effect.

Most of the film-forming substances in coatings, namely resins and pigments, are composed of polymeric organic compounds, mainly non-conductive dielectrics. In addition to film-forming substances, solvent-based coatings also include organic solvents, co-solvents, curing agents, and electrostatic thinners. Except for benzene, xylene, solvent gasoline, etc., these solvent-based substances are mostly polar substances with low resistivity and certain conductivity, which can improve the conductivity of coatings.

The molecular structure of dielectrics can be divided into polar molecules and non-polar molecules. The dielectric body composed of polar molecules exhibits electrical properties under the action of an external electric field; the dielectric body composed of non-polar molecules also exhibits electrical properties under the action of an external electric field, so that it has an affinity for external different charges, so that the outer surface of the dielectric body can be locally charged under an applied electric field.

The spray paint is sprayed out after the nozzle is atomized. The atomized spray droplets are contacted and charged through the nozzle of the spray gun or the needle of the spray plate and the spray ring. The spray droplets with negative charges move to the surface of the workpiece with different poles under the action of static electricity, and deposit on the surface of the workpiece to form a uniform coating film.

As an expert in the field of nozzles, HAPOO is committed to providing you with content that is easier to understand and more effective in marketing. We focus on the advantages of electrostatic atomization technology to bring more benefits to your business promotion. Through HAPOO’s professional nozzle technology, you will get efficient spraying effect and realize a more accurate, stable and high-quality coating process.

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