Paint removal method of waste metal material

Abstract

The invention belongs to the technical field of paint removal of a metal material and particularly relates to a paint removal method of a waste metal material. The method comprises the following steps: preparation of a paint remover, applying of the paint remover and paint removal again. Compared with the prior art, the method provided by the invention has the following advantages: in the invention, the prepared paint remover has good paint removal property and relatively strong ability of permeating into the gaps of macromolecular chain segment and easily generates an internal acting force with macromolecules in a paint film so as to destroy the adhesion between the paint film and a substrate and strip the paint film from the metal substrate; the addition of furoic acid and tocopherol succinate is conducive to accelerating the damage of macromolecular chain segment and enhancing the paint removal effect of the paint remover; the paint remover has moderate viscosity; through repeated paint removal and in cooperation with corresponding conditions of paint removal, the paint removal effect is enhanced; the paint removal process causes relatively little damage to the surface substrate; and according to inspection, the content of harmful substances in the paint remover conforms to national standard, and the paint remover can be promoted for application.

Description

technical field [0001] The invention belongs to the technical field of paint stripping of metal materials, and in particular relates to a paint stripping method of waste metal materials. Background technique [0002] In industrial use, the surface of various equipment and devices is protected by coating. Changes in the surface of the coating base material will damage the coating and lose its protective effect, which will affect the use of the object. In order to be able to use it normally, it needs to be repainted or recycled. Before repainting, the old paint on the surface of the product needs to be removed. Film removal, the commonly used methods are mechanical and chemical methods. The traditional mechanical method of removing paint film, such as manual removal with a scraper, is easy to cause mechanical damage to the surface of the substrate, especially for some parts with complex geometric shapes. , the chemical method can be divided into two methods of lye treatment a...

AI Technical Summary

Problems solved by technology

[0002] In industrial use, the surface of various equipment and devices is protected by coating. Changes in the surface of the coating base material will damage the coating and lose its protective effect, which will affect the use of the object. In order to be able to use it normally, it needs to be repainted or recycled. Before repainting, the old paint on the surface of the product needs to be removed. Film removal, the commonly used methods are mechanical and chemical methods. The traditional mechanical method of removing paint film, such as manual removal with a scraper, is easy to cause mechanical damage to the surface of the substrate, especially for some parts with complex geometric shapes. , the chemical method can be divided into two methods of lye treatment and organic solvent. Although the cost of lye treatment is low, it must be heated when used, and it needs a larger volume of paint stripping tank and cleaning tank. The treatment time is long, generally 2-3 Hours; the organic solvent method has high paint removal efficiency, is used at room temperature, has little corrosion to metals, and is convenient for construction, but is toxic, volatile, flammable, and high in cost. In view of the above problems, the surface paint of old metal materials should be removed method for research