What is the back cover used when using emulsion

There are two main types: clear primers and masking primers.

1) Transparent alkali-resistant latex paint has very low viscosity and strong penetration, excellent alkali resistance and adhesion, so as to produce adhesion and sealing effect on the surface of the base layer, but has no covering ability. The particle size of the emulsion must be fine. Depending on the charged nature of the polymer emulsion used, there are cationic emulsion blocking primers and anionic emulsion sealing primers.

2) Covering type alkali-resistant bottom emulsion paint has the dual role of sealing and masking. The viscosity of the coating is low, the fluidity is good, it is easy to penetrate the porous substrate, blocks the capillary channel, closes the alkalinity of the substance in the substrate, and makes the coating firmly attached to the surface of the substrate, at the same time, the coating has a certain hiding power, thereby improving the finishing background of the surface drawing, which is conducive to the uniformity of the color of the surface coating, and can also save the consumption of the top coating.

Primer. Generally speaking, the primer of interior wall paint is called alkali-resistant sealing primer, and its function is mainly to fill the wall with magnetic powder and have a certain ability to resist water and moisture; If most of the interior decoration does not need primer, the exterior wall must be primed! Latex paint, that is, topcoat in the usual sense, can be divided into functional latex paint, and general latex paint (also called engineering latex paint), a better latex paint (functional latex paint) can achieve waterproof, anti-crack, antibacterial and mildew effect, and the general latex paint is just a whitening and covering function, compared with the wall of lime, just do not drop powder!

Latex paint is divided into types of paints, paints, and latex paints. The primer plays a closed, isolating role, and the effect of moisture and mildew protection also depends on the primer. The primer is divided from the function of the coating.

Topcoat and primer. Latex paints include latex paints, primers and latex paints, topcoats.

Summary. The first component of the sealing primer is a highly permeable epoxy resin liquid, and the second component is a special curing agent, which is suitable for the surface of concrete, wood, terrazzo, steel and other substrates as a sealing primer.

The second component is a special curing agent, which is suitable for mixing the surface of mothic concrete, wood, terrazzo, steel and other substrates as a sealing primer.

The role of sealing primer broadcast (1) Sealing the substrate, penetrating into the internal structure of the substrate, blocking the pores in the substrate, reducing the number of open pores in the substrate, increasing the number of closed pores, inhibiting the penetration of coating moisture, making the penetration uniform, and making the absorption of the substrate into the upper layer of paint uniform. (2) Sealing the bottom crack mu without paint can prevent moisture, alkali isolation effect, can effectively isolate the alkali content of the base layer, and prevent the seepage of alkali from damaging the coating. (3) Reinforcing the loose and weak substrate and reinforcing the substrate.

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Hello Huixun, the sealing coating paint is directly attached to the substrate, which is attached to the middle coat, the top coat, the role of the upper and lower layers, a good coating system between the layer and the layer of the coating film without a layer of interface, coating construction requires each process can be effectively interpenetrated, the whole coating becomes a whole, the sealing primer is the first film attached to the substrate, so the quality of the sealing primer is very high, there is good water resistance, alkali resistance, waterproof isolation saline-alkali exudation, good adhesion and interlayer adhesion. The first component of the closed coating paint shed is made of highly permeable epoxy resin liquid, and the second component is a special curing agent, which is suitable for the surface chain of concrete, wood, terrazzo, steel and other substrates.