Electrolytic paint-stripping agent and paint-stripping method

A paint stripping and cosolvent technology, applied in electrolytic coating, electrophoretic plating, coating, etc., can solve the problems of slow paint stripping speed and poor paint stripping effect of paint stripping agent, achieve fast paint stripping speed, simple treatment, The effect of low toxicity to the human body

Active Publication Date: 2018-10-09
浙江瑞特良微电子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an electrolytic paint stripper, which can solve the problems of slow paint stripping speed and poor paint stripping effect in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Preparation of electrolytic paint stripper:

[0035] Sulfuric acid (98%) 40g

[0036] Urea 5g

[0037] Hydroxyethylidene diphosphonic acid 5g

[0038] Benzyl alcohol 10

[0039] Isopropanol 10

[0040] Sodium sulfate 3g

[0041] Fatty alcohol polyoxyethylene ether 2g

[0042] water 25g

[0043] Add calculated weights of water, sulfuric acid, urea, hydroxyethylidene diphosphonic acid, benzyl alcohol, isopropanol, sodium sulfate, fatty alcohol polyoxyethylene ether into the stirring tank, and mix well to obtain a water-soluble electrolytic stripping paint agent.

[0044] Paint stripping experiment

[0045] Submerge the workpiece to be stripped into the electrolytic tank, which contains the electrolytic paint stripper, place the workpiece to be stripped on the cathode, turn on the power, and perform electrolysis. The temperature of the electrolytic paint stripper is at 35°C, the current density is 15A / dm 2 , take it out after 5 minutes of electrolysis, wipe it cl...

Embodiment 2

[0047] Preparation of electrolytic paint stripper:

[0048] Sulfuric acid (98%) 40g

[0049] Citric acid 5

[0050] Urea 5g

[0051] Benzyl alcohol 8

[0052] Isopropanol 10

[0053] Sodium sulfate 3g

[0054] Fatty alcohol polyoxyethylene ether 2g

[0055] water 27g

[0056] Add calculated weights of water, sulfuric acid, citric acid, urea, benzyl alcohol, isopropanol, sodium sulfate, and fatty alcohol polyoxyethylene ether into the stirring tank in turn, and mix well to obtain a water-soluble electrolytic paint stripper.

[0057] Paint stripping experiment

[0058] Submerge the workpiece to be stripped into the electrolytic tank, which contains the electrolytic paint stripper, place the workpiece to be stripped on the cathode, turn on the power, and perform electrolysis. The temperature of the electrolytic paint stripper is at 35°C, the current density is 15A / dm 2 , take it out after 5 minutes of electrolysis, wipe it clean after taking it out, dry it, and observe t...

Embodiment 3

[0060] Preparation of electrolytic paint stripper:

[0061] Sulfuric acid (98%) 55g

[0062] Urea 5g

[0063] Benzyl alcohol 10

[0064] Isopropanol 15

[0065] Sodium Phosphate 3g

[0066] Fatty alcohol polyoxyethylene ether 1g

[0067] water 11g

[0068] Add calculated weights of water, sulfuric acid, urea, benzyl alcohol, isopropanol, sodium phosphate, and fatty alcohol polyoxyethylene ether into the stirring tank in sequence, and mix evenly to obtain a water-soluble electrolytic paint stripper.

[0069] Paint stripping experiment

[0070] Submerge the workpiece to be stripped into the electrolytic tank, which contains the electrolytic paint stripper, place the workpiece to be stripped on the cathode, turn on the power, and perform electrolysis. The temperature of the electrolytic paint stripper is at 35°C, the current density is 15A / dm 2 , take it out after 5 minutes of electrolysis, wipe it clean after taking it out, dry it, and observe the surface characteristics...

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PUM

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Abstract

The invention discloses an electrolytic paint-stripping agent. The electrolytic paint-stripping agent comprises 5-55wt% of a paint-stripping main agent, 8-25wt% of a cosolvent, 3-15wt% of a penetrating agent, 3-5wt% of conductive salt and1-5wt% of a surfactant. The electrolytic paint-stripping agent is high in paint-removing speed, so that an electrophoretic paint film can be quickly removed fromthe surface of a workpiece; the paint-stripping agent does not corrode the workpiece; the paint-stripping agent does not contain toxic and harmful substances and has low toxicity to a human body, so that the personal safety of an operator is guaranteed, treatment on wastewater after paint stripping is simple, and environment friendliness is achieved.

Description

technical field [0001] The invention relates to the technical field of automobile surface treatment, in particular to an electrolytic paint stripper. The invention also relates to a paint stripping method. Background technique [0002] With the vigorous development of the automobile industry, people have increasingly strict requirements on the appearance of automobiles. Not only do they require the surface of the automobile to have good weather resistance, light resistance, and corrosion resistance, but they also require the surface of the automobile to maintain its luster for a long time. In the middle and high-end automobile industry, the surface of a series of exterior parts such as automobile logos, pedals, fenders, decorative strips, water cut strips, tripods, luggage racks, door handles, and central control panels needs to be electroplated with a layer of electrophoretic paint membrane. In the process of depositing a layer of paint film, the clamp (hanger) used to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F1/04C25D13/22
CPCC25D13/22C25F1/04
Inventor 何友余吴育祥李德荣
Owner 浙江瑞特良微电子材料有限公司
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