Colored crack paint
The construction crack paint is generally better in spraying construction, and the crack pattern is round and natural and uniform. If the hand brush is used, the crack will be affected by the gesture and uneven direction of the paint, and the crack pattern will be uneven and the feeling of roughness will be dull. .
Crack paint preparation
The primer should be applied before the cracking of the construction. The primer can be selected with the matching crack primer produced by the same factory. It can also use the aluminum powder, pearl powder, gold powder and other colored primer. Generally, the color contrast between the primer and the topcoat. The larger the stereoscopic effect, the better the effect. However, if it is applied on polystyrene plastic (PS), it is possible to spray crack paint directly without having to make a primer.
1. Construction supporting crack primer: The distribution of the matching crack primer is the same as that of the cracked paint. No curing agent is needed when the paint is applied. The construction viscosity is adjusted with a proper amount of special crack water. After the adjusted paint is fully mixed, use 100-200. The mesh filter can be used for construction. The paint is now ready for use. Once prepared, do not use it within 2 hours for more than 4 hours. After the paint is opened, it must be sealed immediately to avoid evaporation, moisture absorption and tampering, which will affect the application. During the construction, firstly apply nitro-white (or colored) primer 2-3 lines on the bottom layer of nitro-encapsulated primer (Bid Debao) until the bottom layer reaches fullness. After drying, the dust is cleaned and cleaned. Construction supporting crack primer 1-2, evenly sprayed during construction, dry with more than 600 mesh sandpaper, dust removal clean. The paint coating of the crack primer should have a certain fullness (generally spray a half cross), if the film is too thin, it will affect the adhesion and strength.
2, construction of aluminum powder, pearl powder, gold powder and other colored primer: aluminum powder, pearl powder, gold powder, etc. with the right amount of Tianna water distribution, construction first white nitro hand sweeping paint on the ground floor 2-3 roads to fullness, After being dried, the dust is cleaned and cleaned, and evenly distributed 1-2 paints of aluminum powder, pearl powder and gold powder can be evenly sprayed. After drying, the dust can be cleaned without grinding.
Cracked paint crack cracked after the paint surface peeled off
Because the cracked paint has large powderiness, large shortening, low flexibility, and poor adhesion, the paint surface is relatively simple to fall off after drying. In order to make the crack paint durable and durable, it is more beautiful and bright. After the crack paint is dry, the sanding is smooth, and the surface is cleaned. The back cover is semi-matt, matt nitro varnish or polyester paint, polyurethane paint, two-component PU varnish, etc. . When the varnish is applied, the clear lacquer should be coated with a thin spray (at least twice). Some construction workers in the construction lack understanding of the basic characteristics of the cracked paint, and then use non-nitro-based paints (including aluminum powder, pearl powder, gold powder and other colored primers) after the base is scraped and put on the base. The base is soft, and the internal stress of the cracked paint is high. The pulling strength will be turned upside down during the shortening process to form a large area of peeling and peeling. However, the solution is also very simple. It is not necessary to rework and re-prime. For the non-nitro-based paint (including aluminum powder, pearl powder, gold powder and other colored primers) after the bottoming with general scraping putty, etc. Use polyester primer or polyurethane primer, such as strong primer, strong film, and thick layer of hard paint. After the original bottom layer is closed and strengthened, re-spray the assigned aluminum powder, pearl powder, gold powder and other paints. -2 roads, after dust removal and cleaning, it can spray crack paint 1 channel, cracking can occur, and the surface layer coating method is the same as above.