Coating knowledge: what is primer

Core tip: the role of primer is generally to increase the adhesion of the paint, to prevent the paint penetration through the pores to be absorbed There is also a sealing primer, which not only increases the adhesion of the paint film, but also seals the material of the substrate to penetrate into the upper layer Primer / sealer functional primer / sealer ferrous (carbon steel) - uses special anti rust pigments, moisture resistant additives, and other preservatives to prevent corrosion Contains antirust pigments such as red lead (lead oxide) calcium lead acid, zinc chromate, zinc phosphate, zinc powder, etc Non ferrous metals (galvanized steel sheet, aluminum alloy, etc.) - to prevent corrosion and provide a 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 Home of paint news: the role of primer is generally to increase the adhesion of paint, to prevent paint penetration through pores to be absorbed There is also a sealing primer, which not only increases the adhesion of the paint film, but also seals the material of the substrate to penetrate into the upper layer Primer / sealer functional primer / sealer ferrous (carbon steel) - uses special anti rust pigments, moisture resistant additives, and other preservatives to prevent corrosion Contains antirust pigments such as red lead (lead oxide) calcium lead acid, zinc chromate, zinc phosphate, zinc powder, etc Non ferrous metals (galvanized steel sheet, aluminum alloy, etc.) - prevent corrosion and provide a good bonding base for the upper layer Before applying the primer, the surface of the base material shall be treated with etching primer to strengthen the adhesion and prevent the base material from chemical action with the upper layer Cement mortar, concrete, asbestos cement - forms an alkali resistant protective layer and provides protection for the upper layer - improved adhesion Sealing primer can resist alkali, and prevent alkaline corrosion on the coating Wood - a resin used to seal small holes in a wood surface with a sealer to prevent the surface from sucking in paint - aluminum primer is usually used to seal the wood surface containing resin and stain The primer shall be able to reduce the holes on the wood surface and have sufficient moisture resistance 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,