Coating cars with metallic paint has the characteristics of good fullness of the paint film, high gloss (about 95%) (instrument: gloss meter), strong adhesion, and excellent However, the coating process is more than that of other paints, that is, after coating with metallic paint paste, it needs to be covered with a matching varnish to improve the protective performance of the coating and show the beauty of the metallic paint and enhance the decorative performance.
At present, the metallic paints used in automobile painting mainly include silver powder paint (aluminum powder paint) and flash paint (pearl paint).
commonly used silver paint
This kind of silver powder paint mainly has two types: drying and self-drying (drying at room temperature). Drying silver paint can be divided into amino polyester silver paint and aminoacrylic polyurethane silver paint. Self-drying silver powder paint mainly refers to acrylic polyurethane silver powder paint.
①Drying silver powder paint This paint is a one-component paint. Among them, the amino polyester silver powder paint has low drying temperature ( 30 minutes at 100°C), low price, good fullness of the paint film, and strong adhesion (instrument: adhesion Tester). Outdoor durability, light fastness, excellent water resistance and other characteristics. suitable
It is used in the topcoat coating of medium and high-end passenger cars to improve the decorative performance of the appearance. The drying temperature of aminoacrylic polyurethane silver powder paint is relatively high, usually it needs to be baked at 130 ℃ for 30 minutes, and the paint film can be dried. The paint film gloss, hardness (instrument: Hardness Tester), smoothness, etc. The paint is good, but expensive, and the cost of painting is high. It is mainly suitable for surface coating of ordinary mid-range cars and luxury buses.
When using amino drying silver powder paint, first stir the paint color paste evenly, and dilute it with supporting thinner to the viscosity suitable for spraying construction, filter it clean, spray continuously and evenly for 2 times, stop for 15-20 minutes after spraying, and then Finish with the matching varnish , followed by drying.
② Self-drying silver powder paint This paint is a two-component paint. There are coarse silver, medium silver, fine silver, and extra fine silver. Among them, coarse silver and medium silver silver powder paints are mainly used for surface coating of medium and high-end passenger cars; fine silver and extra fine silver powder paints are mainly used for .
Under normal temperature conditions, self-drying silver powder paint is 20-30 minutes for surface drying, 24 hours for solid drying, and 2-2.5 hours for low-temperature baking (60-70°C). When using self-drying silver powder paint, the silver powder paste should be effective Stir evenly, then add thinner and curing according to the ratio specified by the product , after fully mixing evenly, filter clean, spray continuously, evenly and carefully! Dilute to low application level and spray wet-on-wet for varnishing.
commonly used glitter paint
This type of flash paint includes three types: self-drying, quick-drying and drying.
① Self-drying flash paint This paint is a two-component paint. Among them, component A is the adduct of diisocyanate and hydroxyl-containing resin ; component B is acrylic resin, flash aluminum powder, pigment, etc., belonging to acrylic modified polyurethane coatings. main feature
Yes, the paint film has strong adhesion, high decorativeness and excellent weather resistance. Surface dry at room temperature for 30-40 minutes, solid dry for 12-16 hours, low-temperature baking at 60-70°C for 1-1.5 hours. Mainly used in cars. Topcoat coating. How to use and self-drying silver powder
The paint is basically the same.
②Quick-drying flash paint The paint mainly has two types: nitro quick-drying flash paint and acrylic nitro flash paint.
a. Nitro fast-drying flash paint The paint is composed of nitrocellulose and other resins, flash pigments, plasticizers, and mixed solvents. It has the characteristics of fast drying, fine and smooth paint film, strong flash and bright color. The colors are silvery white, blue, purple red, dark brown , green and so on. When using, dilute it with banana water to the construction viscosity, spray it evenly, and then cover it with matching varnish.
b. Acrylic nitro flash paint The paint is made of acrylic resin, nitrocellulose, flash aluminum powder, plasticizer, organic solvent
and so on. Surface dry 15-20 minutes, hard dry 1-1.5 hours. It has the characteristics of bright color, strong flash, not easy to yellow the paint film, excellent color retention and durability, etc. It is suitable for topcoat coating of high-end luxury passenger cars and cars.
