Acrylic modified energy-saving environment-friendly roller-coating paint for metal deep drawing sheets and application method thereof

Abstract

The invention provides an acrylic modified energy-saving environment-friendly roller-coating paint for metal deep drawing sheets and an application method thereof. The paint comprises a white primer and a finish paint. The paint has the advantages of high adhesive force, favorable ductility, high temperature resistance and long service life, changes the processing technique of the metal sheet products, simplifies the processing procedure, centrally completes the roller coating treatment on the metal deep drawing sheet, and does not need to independently arrange any spray workshop.

Description

technical field [0001] The invention relates to an acrylic acid-modified energy-saving and environment-friendly roller coating paint for hardware deep-drawing plates and a use method thereof, and is especially suitable for coating metal deep-drawing plates made of thick metal plates. Background technique [0002] The coating process of the existing metal deep-drawing plate made of thick metal plate mainly adopts spraying technology: first, the hardware deep-drawing plate is made into hardware deep-drawing plate products such as anti-theft doors, iron buckets, iron pipes, etc., and then sent to the spraying workshop Spraying is carried out to obtain formed anti-theft doors, iron buckets and iron pipes. [0003] Among them, spraying is a coating method that is dispersed into uniform and fine mist droplets by means of pressure or centrifugal force through a spray gun or a disc atomizer, and applied to the surface of the object to be coated. [0004] The main problem in sprayin...

AI Technical Summary

Problems solved by technology

[0006] 1) The amount of paint is large, but the utilization rate is low, resulting in waste

During the spraying process, because the paint is not resistant to high temperature, the paint will change color if the temperature is too high, so the low-temperature spraying is used, resulting in a small amount of spraying each time, and it needs to be sprayed 3 to 5 times to complete the spraying of the formed thick plate products, causing damage to the product. waste of paint;

[0007] 2) There are volatile materials in the paint used in the existing spraying process. During the spraying process, only 30-40% of the paint is attached to the formed hardware deep-drawing plate products, and the rest diffuses into the air or falls on the ground. Serious waste, polluting the environment, and high spraying costs;

[0009] 4) The process of spraying first before processing cannot be realized

If it is processed after spraying, the adhesion and ductility of the paint will be insufficient, and it will fall off during the process; and the bending degree (T-bend performance) of the thick plate sprayed with paint is generally 2T or above, and it requires 0T ( That is, after the thick plate is bent at 180°, it is completely closed together without gaps, and the paint does not burst or fall off) or 1T (that is, after the thick plate is bent twice at 180°, the outermost paint surface does not fall off and does not burst). The paint used in the spraying process cannot meet the requirements;

[0010] 5) For the existing spraying process, spraying on the processed and formed hardware deep drawing board, for the area with complex structure (such as corners, depressions, etc.) on the formed hardware deep drawing board, it is very likely that it cannot be sprayed at one time. Multiple spraying is required to complete the spraying in areas with complex structures, resulting in uneven distribution of paint on the surface of the hardware deep drawing board, which affects subsequent use;

[0011] 6) With the spraying process, each hardware deep-drawing plate product factory needs to set up a special spraying workshop, and the pressure of environmental protection is high;

[0012] 7) Most of the paints used in the existing spraying process are polyester paints or fluorocarbon paints. These two paints have poor aging resistance. After a long period of continuous sunshine, the surface of the deep-drawing metal plate will appear yellowing and discoloration;

[0013] 8) The existing polyester paint or fluorocarbon paint has poor high temperature resistance. When spot welding is used to continue processing or the temperature reaches 230°C, the paint on the surface of the metal deep drawing board will change color and crack

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