Classification of coating: waterborne epoxy coating

Core tip: Product Introduction: Waterborne epoxy coating is a kind of coating with water as solvent or dispersion medium Water based epoxy coating includes water-soluble epoxy coating and water emulsion coating The water-soluble coating is often called electrophoretic coating, that is, the resin dissolves in water to form a uniform colloidal solution If the resin ion is charged, the colloidal particles can be electrodeposited on the surface of the workpiece by direct current Classification: According to the dispersion system, it can be divided into: 1) The water-soluble epoxy coating can be divided into water-soluble anion resin coating (anodic electrophoretic coating) and water-soluble cation resin coating (cathodic electrophoretic coating) often Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Coating home news: product brief introduction: waterborne epoxy coating is a kind of coating with water as solvent or dispersion medium Water based epoxy coating includes water-soluble epoxy coating and water emulsion coating The water-soluble coating is often called electrophoretic coating, that is, the resin dissolves in water to form a uniform colloidal solution If the resin ion is charged, the colloidal particles can be electrodeposited on the surface of the workpiece by direct current Classification: according to the dispersion system, it can be divided into: 1) water-soluble epoxy coating, water-soluble anion resin coating (anodic electrophoretic coating) and water-soluble cation resin coating (cathodic electrophoretic coating) Water soluble curing agents such as melamine formaldehyde resin, benzene melamine formaldehyde resin, urea formaldehyde resin and isocyanate seal are often used a) The resin of water-soluble anion resin coating is formed by the reaction of epoxy resin with high hydroxyl content with acid and anhydride, and then neutralized with amine to obtain water-soluble anion resin b) The resin of water-soluble cationic resin coating is obtained by adding epoxy resin and amine, introducing semi closed polyisocyanate as crosslinking agent, and finally neutralizing with acid 2) Water emulsion epoxy coating water emulsion epoxy coating is a kind of low molecular weight epoxy resin emulsified by suitable emulsifier, which has good storage and use stability In practice, most of the room temperature curing type is water emulsion coating Features: ① water-based epoxy coating saves resources and low pollution water-based epoxy coating uses water instead of organic solvent The water source of waterborne epoxy coating is extensive, which can save a lot of resources In the process of production, transportation and coating, there is basically no pollution and fire risk, so it is beneficial to protect the ecological environment ② After oil removal, rust removal and phosphating treatment, the surface of the water-based epoxy coating can be coated without completely drying When the water-based epoxy coating is applied by electrodeposition, there are more strict requirements for the surface treatment of the coated objects Construction equipment and tools can be cleaned with water ③ The electrophoretic coating of waterborne epoxy coating adopts the automatic electrodeposition construction method, the coating efficiency is higher than spray, brush, spray, dip and other construction methods, the coating quality is stable, and there are fewer disadvantages; other waterborne epoxy coating can adopt spray, brush, dip and other construction methods ④ There are a lot of hydrophilic groups in waterborne epoxy coatings, so it is necessary to improve the corrosion resistance of the coatings For the water-based epoxy coating dried at room temperature, effective measures shall be taken to ensure that the water in the coating is released within the specified time This is a subject worthy of attention in the formulation design, production and coating process of waterborne epoxy coating Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,