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Paint remover for metal surface epoxy resin

A technology for epoxy resin paint and metal surface, applied in the direction of chemical paint/ink remover, coating, etc., can solve the problems of unsatisfactory epoxy resin paint treatment on metal surface, etc., to achieve swelling, rapid paint stripping, The effect of reducing adhesion

Inactive Publication Date: 2019-07-26
祝亚琴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this type of paint remover is thorough and has a wide range of applications, it is not ideal for the treatment of epoxy resin paint on metal surfaces.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Several identical steel plates to be stripped (the surface is the epoxy universal primer 280 of SIGMA company, the steel plate is a common steel plate, the surface is polished, and the thickness is 20 microns) is completely immersed in the paint remover solution, the paint remover The operating temperature range is 50°C. Every 1 minute, take out the steel plate to be stripped and observe whether the epoxy paint has been removed from the surface.

[0020] The paint stripper consists of 70 parts by weight of N, N-dimethylformamide, 3 parts by weight of anionic surfactants, 3 parts by weight of nonionic surfactants, 4 parts by weight of organic bases, 25 parts by weight of ethanol, 6 parts by weight of mineral spirits, 8 parts by weight of diphenylamine derivatives and 8 parts by weight of water. The time to test for complete removal was 11 minutes.

Embodiment 2

[0022] Several identical steel plates to be stripped (the surface is the epoxy universal primer 280 of SIGMA company, the steel plate is a common steel plate, the surface is polished, and the thickness is 20 microns) is completely immersed in the paint remover solution, the paint remover The operating temperature range is 50°C. Every 1 minute, take out the steel plate to be stripped and observe whether the epoxy paint has been removed from the surface.

[0023] The paint stripper consists of 65 parts by weight of N, N-dimethylformamide, 4 parts by weight of anionic surfactants, 4 parts by weight of nonionic surfactants, 5 parts by weight of organic bases, 22 parts by weight of ethanol, 7 parts by weight of mineral spirits, 9 parts by weight of diphenylamine derivatives and 8 parts by weight of water. The time to test for complete removal was 12 minutes.

Embodiment 3

[0025] Several identical steel plates to be stripped (the surface is the epoxy universal primer 280 of SIGMA company, the steel plate is a common steel plate, the surface is polished, and the thickness is 20 microns) is completely immersed in the paint remover solution, the paint remover The operating temperature range is 50°C. Every 1 minute, take out the steel plate to be stripped and observe whether the epoxy paint has been removed from the surface.

[0026] The paint stripper consists of 70 parts by weight of N,N-dimethylformamide, the anionic surfactant of 6 parts by weight, the nonionic surfactant of 6 parts by weight, the organic base of 8 parts by weight, the ethanol of 12 parts by weight, 10 parts by weight of mineral spirits, 3 parts by weight of diphenylamine derivatives and 9 parts by weight of water. The time to test for complete removal was 17 minutes.

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PUM

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Abstract

The invention relates to a paint remover for metal surface epoxy resin. The paint remover consists of 50-70 parts by weight of N, N-dimethylformamide, 1-5 parts by weight of anionic surfactants, 1-5 parts by weight of nonionic surfactants, 3-10 parts by weight of organic base, 20-30 parts by weight of ethanol, 5-7 parts by weight of solvent oil, 4-12 parts by weight of diphenylamine derivatives and 3-9 parts by weight of water. The diphenylamine derivatives are selected, so that the adhesive force between epoxy resin and metal can be greatly reduced, and rapid paint removal can be realized onthe metal surface.

Description

technical field [0001] The invention relates to a paint remover for metal surface epoxy resin paint. Background technique [0002] Organic paint remover is a liquid mixed with chlorinated hydrocarbons, benzene series, esters, alcohols, ethers and other solvents. Invented organic paint remover has become the mainstream paint remover in the market because of its advantages of convenient use, high paint removal efficiency, good stability and low metal corrosion. For example, in the patent "paint remover for polyester and polyesterimide enamelled copper round wire paint film", the formula of paint remover is announced, and its components are: 30-50% formic acid, 30% ~40% trichloromethane, 5~35% mixed cresols, invention 0~5% additive composition. In the patent of "a powerful paint remover", it is announced that the mass fraction is 0-5% surfactant, 72-78% dichloromethane, 0-3% ethyl acetate, 0.78-0.8% thickener , Invention 0.6-0.7% paraffin, 4.85-10% phenol, 5-9% ethanol, 0-6%...

Claims

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Application Information

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IPC IPC(8): C09D9/04
CPCC09D9/005C09D9/04
Inventor 祝亚琴
Owner 祝亚琴
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