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Preparation and application method of water-based paint remover

A paint stripper, water-based technology, used in chemical paint/ink removers, coatings, etc., can solve the problems of high toxicity of surfactants, the scope of use of paint strippers needs to be broadened, etc. Efficient and affordable effect of paint

Inactive Publication Date: 2013-04-03
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Li Jianqiang, Li Renyong, etc. An alkaline paint remover and its preparation and use method (Patent No.: CN 1775871A). Although the paint remover has a good effect, the surfactant cetyltrimethylammonium bromide used It is also highly toxic, and the scope of use of the paint remover needs to be broadened, and the efficiency of the paint remover can continue to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The circuit board that does not contain electronic components is placed in the paint remover, and the composition of the paint remover is: sodium hydroxide 50g, octadecyl dihydroxyethyl betaine 8g, compound additive (sodium malate 5g, sarcosine Sodium 8g, sodium acetate 6g) 19g, water 900ml. The treatment temperature is 75°C, and the removal time is 5 minutes. The metal substrate and wiring are free of corrosion, and the surface is clean and bright.

Embodiment 2

[0014] The circuit board that does not contain electronic components is placed in the paint remover, and the composition of the paint remover is: sodium hydroxide 80g, octadecyl dihydroxyethyl betaine 5g, composite additives (sodium malate 8g, sodium lactate 5g, Sodium acetate 7g) 20g, water 900ml. The treatment temperature is 80°C, and the removal time is 6 minutes. The metal substrate and circuit are free of corrosion, and the surface is clean and bright.

Embodiment 3

[0016] Put the coated mobile phone case in the paint remover, the paint remover is composed of: 90g of sodium hydroxide, 6g of octadecyl dihydroxyethyl betaine, compound additives (sodium malate 10g, sodium sarcosinate 6g, sodium acetate 9g) 25g, water 900ml. The treatment temperature is 60°C, and the removal time is 7 minutes. The polymer matrix has no corrosion and deformation, and the surface is clean.

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PUM

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Abstract

The invention discloses a preparation and application method of a water-based paint remover. The water-based paint remover consists of sodium hydroxide, a surface active agent and a composite additive. The mass fraction of sodium hydroxide is 3%-10% that of the surface active agentis 0.5%-2%, that of the composite additive is 1%-6%, and the rest is water. The surface active agent is octadecyl dihydroxy diethyl betaine; and the composite additive is composed of three of sodium lactate, sodium malate, sodium sarcosinate, natrium aceticum and sodium gluconate. The water-based paint remover disclosed by the invention has the characteristics of being efficient, environmentally-friendly, safe, nontoxic, barely corrosive and hard to volatilize, can be used for removing the paint from common metal and plastic base materials, and is simple and easy to prepare and use.

Description

technical field [0001] The invention relates to a method for preparing and using a water-based paint remover. Background technique [0002] The main components of general metal and plastic paint are epoxy resin, acrylic resin and polyamide resin, such as propanediol epoxy resin, novolac epoxy resin, medium phenol epoxy resin and urethane, etc., curing treatment Finally, these resins are firmly attached to the substrate. When the substrate needs to be recycled, the resin on the surface usually needs to be removed first. If it is not handled properly, it will easily pollute the environment or cause waste of resources. At present, there are generally three treatment processes: one is direct incineration. At present, many enameled wires are directly incinerated. Because these resins contain nitrogen and sulfur components, they are easy to pollute the environment and waste resources. The second is to use organic paint remover to remove. Although organic paint stripping is qui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D9/04
Inventor 潘湛昌程果胡光辉范红肖楚民魏志钢
Owner GUANGDONG UNIV OF TECH
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