Paint remover and method for removing paint from surface of plastic articles

Abstract

This invention relates to a paint remover composing and a method of using it to remove pain on plastic surface. It includes water, alcohols, solve accelerant agent and surface activator, the alcohols is at least one of methanol, ethanol, normal propyl alcohol, isopropyl alcohol, normal butyl alcohol, isobutyl alcohol, ethylene glycol. The alcohol can be replaced by cellulose solution, and the cellulose solution is at least one of methyl cellulose, ethyl cellulose or propyl cellulose. The solution accelerant is sodium hydroxide, and the surface activator is one of sodium dodecanesulphonate or sodium dodecyl sulfate. The method is that the paint remover is heated to 20-70 degrees centigrade, and the plastic is agitated in the paint remover for 5-20 minutes for fully contact to the agent. The remover in this invention has high paint removing efficiency, the cost is low, and less pollution to environment.

Description

technical field [0001] The invention relates to a composition for removing paint, in particular to a paint remover for removing paint on plastic surfaces, and also relates to a method for removing paint on the surface of plastic parts using the paint remover of the invention. Background technique [0002] Most of the paint strippers currently used to take off the paint on plastic surfaces are organic solvents, and these organic solvents include: toluene, xylene, esters, etc. The paint stripper disclosed in Chinese Patent No. 95111816.1 adopts dimethylbenzene as one of the organic solvents. Although organic solvent has the advantage that the paint removal efficiency is higher as a paint remover, it has the following main disadvantages: [0003] 1. Serious pollution and great harm to human body, this is because organic solvents of benzene substances are more toxic to human body; [0004] 2. It also has a dissolution effect on plastics, and it is not suitable for recycling pl...

AI Technical Summary

Problems solved by technology

[0003] 1. Serious pollution and great harm to human body, this is because organic solvents of benzene substances are more toxic to human body;

[0004] 2. It also has a dissolution effect on plastics, and it is not suitable for recycling plastic substrates after paint removal treatment for plastic-based materials;

[0005] 3. High cost of paint removal

[0007] Among them, the mechanical grinding method is useful for sanding and sanding. The sanding method is mainly used to remove the paint on the surface of plastic parts in a small area, which is convenient for repainting; the sanding method can be used for the removal of large-area flat-painted plastic parts. Paint on the surface, but can not do anything for painted plastic parts with complex surface shapes

[0008] The organic solvent wiping method is to use a rag dipped in an organic solvent, repeatedly wipe the painted surface, and dissolve the paint. Such organic solvents generally include: toluene, xylene, esters, etc., because the organic solvent is harmful to the paint. The human body is highly toxic, so this method is harmful to the health of operators, and organic solvents can also cause damage to plastic parts, and the cost of such organic solvents is relatively high

[0009] In addition, the above two methods are not suitable for large-scale paint stripping operations