Electrophoretic coating is a kind of special coating film forming method, onlysuitable for water-based coating was different with the general coatingelectrophoretic coating special.

It is provided with a conductive are used as the anode electrophoresis paintcoated immersed in trough concentration filled with water dilution, relatively lowin (or cathode), corresponding to other cathode is arranged in the groove of the (or anode), direct current between electrodes, being a coating method ofcoating film coated on homogeneous precipitation, water insoluble.

According to the types of coated polarity and electrophoretic coating,electrophoresis coating method can be divided into two types.

Anodic electrophoretic coating method: coated anode, electrophoretic coatingis used in anionic (negatively charged). Anodic electrophoretic coating film-forming polymer is anionic resin, are commonly used in polymer material multi carboxyl, neutralizing agent for inorganic broken or organic amine, such as KOH, ethanolamine, triethanolamine, three ethylamine. Anodic electrophoretic coating become anionic polymer in the dissociation of water, often with a purephenolic anode electrophoresis paint, coating, maleated polybutadiene anodic electrophoresis oil anodic electrophoretic coating etc..

Cathodic electrophoretic coating method: coated cathode electrophoresispaint is used, cationic (positively charged) cathodic electrophoretic coatingwith film-forming polymer cationic resin, amino resin containing most in theskeleton. The neutralizing agent for organic acids such as formic acid, acetic acid, lactic acid, such as cathode electrophoresis. Paint in the dissociation of water become cationic poly. Compound, resin has the most commonly usedepoxy resin and polyurethane.