Neutral environment-friendly paint remover

Abstract

The invention discloses a neutral environment-friendly paint remover. The neutral environment-friendly paint remover is a mixed solution formed by a main solvent, a volatile inhibitor, an activating agent, a cosolvent, an emulsifying agent, a corrosion inhibitor, a penetrating agent, an alkane odor remover and a thickening agent. The main solvent comprises a mixture of two or three of dichloromethane, ethyl acetate and acetone; the volatile inhibitor is liquid paraffin and water; the activating agent is ethanolamine; the cosolvent is ethanol; and the thickening agent is polyethylene glycol. The neutral environment-friendly paint remover comprises, by mass, 70-80% of the main solvent, 0.5-2% of liquid paraffin, 2-5% of water, 4-6% of ethanolamine, 5-10% of ethanol, 3-8% of the emulsifying agent, 0.2-1% of the corrosion inhibitor, 1-3% of the penetrating agent, 0.3-0.7% of the alkane odor remover and 0.5-1.5% of the polyethylene glycol. The neutral environment-friendly paint remover can effectively remove electrophoretic coatings with complex shapes on metal components thoroughly; a paint removal efficiency is higher than or equal to 98%; the neutral environment-friendly paint remover does not corrode metal, wood or cement, and has a wide application scope, no pungent smell, low volatility, and small harm to a human body and an environment. The neutral environment-friendly paint remover has high stability and can be cleaned easily.

Description

technical field [0001] The invention relates to a paint remover, in particular to a neutral and environment-friendly paint remover for electrophoretic coating which does not corrode metal and does not change color. Background technique [0002] Electrophoretic coating has many advantages, such as strong bonding and adhesion of the coating, best anti-corrosion function, high cross-linking density (adhesion), excellent mechanical properties and chemical resistance; it can simplify or cancel the general electroplating process, shorten The operation time is improved, the production efficiency is improved, the production cost is reduced, and the automatic production can be realized to reduce the labor intensity; the penetration force is good, the edge coverage is high, and the corrosion resistance of the surface of the inner cavity of the workpiece, the spot welding seam, and the hole is improved; the coating The film is colorful, bright in color and good in appearance. By using ...

AI Technical Summary

Problems solved by technology

However, there are some problems in the above-mentioned paint strippers in varying degrees, so it is difficult to meet the actual needs.

The problem is: corroding the metal substrate material, the substrate surface loses the original bright and bright color of the metal texture, and becomes gray, gray black, dark gray, etc. After transparent or transparent color electrophoresis is performed again, transparent electrophoresis without metal bright and bright colors is obtained. Coating defective products can only be scrapped, resulting in a huge waste of comprehensive resources; the scope of application is narrow, the efficiency and speed of paint removal are not ideal, and it is difficult to completely remove stubborn residual paint or particle impurities; there is a strong Pungent odor, VOC (volatile organic compound) emission and toxicity are relatively large, which is relatively harmful to human body and environmental pollution