Paint remover and preparation method thereof, and paint removing method

Abstract

The invention relates to the field of paint removers, and discloses a paint remover and a preparation method thereof, and a paint removing method. The paint remover is prepared from the following components in parts by mass: 20 to 80 parts of ether, 10 to 60 parts of alcohol, 1 to 40 parts of inorganic alkali, 0.1 to 10 parts of a volatile inhibitor, 0.1 to 10 parts of a corrosion inhibitor, 0.1 to 5 parts of a surfactant and 0.1 to 4 parts of a thickening agent. The preparation method of the paint remover comprises the following steps: mixing the inorganic alkali, the ether, the alcohol, thevolatile inhibitor, the corrosion inhibitor, the surfactant and the thickening agent, and uniformly stirring to obtain the paint remover. According to the invention, the paint remover is low in toxicity, environmentally friendly, high in paint removing speed and good in paint removing effect, can avoid corrosion on metal base materials, improve the rust resistance of iron materials, improve the painting adhesive force of iron materials and effectively remove phenolic aldehyde paint films, alkyd paint films, nitro paint films, polyurethane paint films, epoxy resin paint films, water-based paintfilms and electrostatic powder paint films.

Description

technical field [0001] The invention relates to the field of paint strippers, in particular to a paint stripper, a preparation method thereof and a paint stripping method. Background technique [0002] In the painting process, it is inevitable that some unqualified paint films will appear, and after long-term exposure, qualified paint films will appear aging, cracking, peeling and peeling, resulting in the loss of protective effect of the paint film. Paint strippers are often used to remove old paint so that new paint can be applied. [0003] At present, most paint removers on the market use highly volatile substances such as halogenated hydrocarbons, strong acids, and phenols to remove paint. However, halogens are highly toxic groups, and halogenated hydrocarbons are generally more toxic than parent hydrocarbons. After hydrocarbons are absorbed through the skin, they invade the nerve center or act on internal organs, causing poisoning; and they are highly volatile and harm...

AI Technical Summary

Problems solved by technology

Although the effect of the above-mentioned substances is good, it is very harmful to the operator and the environment. At the same time, it will also corrode the substrate, so that the surface of the metal substrate loses the original bright and bright color of the metal texture, and becomes a dark gray defective product. Scrap treatment, resulting in a huge waste of comprehensive resources

[0004] There are also some paint removers with better environmental compatibility, but the paint removal efficiency and paint removal speed are not ideal, and heating is required to achieve a good paint removal speed, which increases the difficulty of operation for large-scale outdoor working environments. Moreover, it is difficult to completely remove phenolic paint film, alkyd paint film, nitro paint film, polyurethane paint film, epoxy resin paint film, water-based paint film, etc., especially electrostatic powder coating film, because it adopts special Electrostatic spraying process, the electrostatic powder coating film formed has a high bonding strength with the metal substrate, and it is difficult to remove it effectively with ordinary paint removers

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