Under the changing conditions of the new era, more and more people use cars. How many of them know what car paints are? The following small series I summarize the types of automotive coatings.
(1) General primer
The universal primer is also called two primer slurries, it can be directly coated on the metal surface, has the function of primer, and has a certain leveling ability.
(2) Putty (filler)
Putty is a thick paste-like coating composed of a large amount of fillers and various coatings as adhesives. It is used to fill in depressions, pores, cracks, scratches and other defects on the surface of the workpiece to achieve a uniform and smooth surface. ,
(3) Two-pass pulp
The second slurry is also called spray putty or second primer. Its function is between the universal primer and putty, and it has a certain level of filling capacity for the small defects (unevenness) on the surface of the coated workpiece. The pigment and filler content is more than the primer, less than the putty, and the color is generally gray . Using manual spraying and automatic electrostatic spraying, it has good wet sanding properties, and a very smooth surface can be obtained after sanding.
(4) Closed primer
The sealing primer is the last intermediate coat before the topcoat. The content of the paint base is between the primer and the topcoat, and the coating film is bright. The paint base is generally made up of the resin used in the primer.
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