Novel low-toxicity high-adsorption marine waterborne anticorrosion composite paint remover and production method thereof

Abstract

The invention discloses a novel low-toxicity high-adsorption marine waterborne anticorrosion composite paint remover, produced from, by weight, 35-36 parts of benzyl alcohol, 4-5 parts of N-methyl-2-pyrrolidone, 5.8-6.8 parts of absolute ethyl alcohol, 6-8 parts of citric acid, 0.2-0.4 part of calcium sulfonate, 0.5-0.7 part of cellulose acetate, 2.1-2.4 parts of polyepoxysuccinic acid, 4-6 parts of papermaking waste residue, 7-9 parts of water hyacinth, 3-4 parts of cassia oil, 0.3-0.5 part of chitosan, 11-12 parts of wheat starch, 2.4-2.9 parts of phenyltriethoxysilane, 1.4-1.9 parts of a self-made emulsifier, and 47-50 parts of water. The composite paint remover produced herein has low volatility and low toxicity, is safe to a metal base, is harmless to operators or environments, is convenient and quick to construct, high in adsorption and good in paint removing performance.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a novel low-toxicity and high-adsorption water-based anti-corrosion composite paint remover for ships and a preparation method thereof. Background technique [0002] Under normal circumstances, when a ship sails for 2-3 years, the paint film of the hull will be eroded by various corrosive media and damaged by mechanical damage, resulting in damage and aging of the paint film, and it is necessary to stop sailing and dock for necessary maintenance. In the maintenance process, it is necessary to completely remove the original paint film and repaint it again. There are many methods that can be used to remove the old paint film, such as mechanical removal, flame erosion, and paint stripper method. Among these methods, the paint stripper method is one of the most commonly used methods because it does not require With relatively large manpower and material resources, th...

AI Technical Summary

Problems solved by technology

[0005] However, the water-based paint remover in this article still contains organic main solvents and mixed acid accelerators, which have a great corrosion and damage effect on the underlying metal materials of the paint, and are not environmentally friendly. Reducing the amount of the paint remover also has the risk of reducing the paint removal efficiency. Therefore, after confirming efficient paint removal At the same time, it is also necessary to strengthen the anti-corrosion protection of the base metal; adding carboxymethyl cellulose as a thickener in the article can improve the wall-hanging property of the paint remover to a certain extent, but the wall-hanging time of the complex metal surface used on the vertical surface Short, the contact time between the paint remover and the old paint film is short, and the paint removal efficiency is low, which limits the application range of the paint remover. In addition, the sludge-like substances produced by chemical paint removal are collected, stored, transported and disposed of Improper handling will also cause harm to the environment that cannot be underestimated