Coating knowledge: what properties should primer have?

Core tip: the primer is directly attached to the substrate, on which there is a surface coating or intermediate modeling coating, which plays a connecting role A good coating system has no layer interface between the layer and the coating film The primer is the first coating attached to the substrate, so the quality of the primer is required to be very high The primer should have good water resistance, alkali resistance, waterproof, isolation of salt and alkali exudation (anti pan alkaline, anti salting out), as well as good adhesion and interlayer adhesion (1) The cement mortar used in building exterior wall and the putty with cement composition are alkaline 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 Paint Home News: primer directly attached to the substrate, which is attached with surface coating or intermediate modeling coating, plays a connecting role A good coating system has no layer interface between the layer and the coating film The primer is the first coating attached to the substrate, so the quality of the primer is required to be very high The primer should have good water resistance, alkali resistance, waterproof, isolation of salt and alkali exudation (anti pan alkaline, anti salting out), as well as good adhesion and interlayer adhesion (1) The cement mortar used in building exterior wall and the putty for exterior wall with cement composition are all materials with high alkali resistance The primer is often directly applied on the surface of these materials The primer film has good alkali resistance, which can ensure that the primer will not be damaged by alkali saponification in the long-term use process, which is the key to ensure its sealing performance and adhesion 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,