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Metal rust remover and preparation method thereof

A technology of rust remover and metal, which is applied in the field of rust remover and metal rust remover for removing steel, copper, aluminum or stainless steel, and can solve the problems of reduced adhesion of coating film, poor bonding force, uneven film layer, etc. , to achieve the effects of easy industrial production, simple preparation method, and easy-to-obtain raw materials

Inactive Publication Date: 2014-09-17
WUZHOU HENGSHENG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of technology, incomplete rust removal will directly affect the operation of the next process, and may pollute the subsequent production line; in terms of coating quality, incomplete rust removal will reduce the adhesion of the coating film, and will also affect the coating. other properties
Frequently encountered in industrial production, such as uneven blackening film at room temperature, inconsistent color, local blackening, electroless plating leakage, poor bonding force, pinholes and other problems are directly related to incomplete pre-treatment rust removal. relation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A metal derusting agent provided by the invention contains the following components per liter of derusting agent: 150g of hydrochloric acid with a mass fraction of 37%, 120g of oxalic acid, 150g of sodium carbonate, 20g of fatty alcohol polyoxyethylene ether, and alkylphenol polyoxyethylene Ether 5g, thiourea 5g, edetate disodium 40g, urotropine 20g.

[0018] The preparation method is as follows:

[0019] 1) each component is weighed by the above-mentioned mass number;

[0020] 2) Put the components weighed in step 1) into a flask, add water to 1L, and then stir at room temperature for 10 minutes to mix well to obtain a metal rust remover.

Embodiment 2

[0022] A metal derusting agent provided by the invention contains the following components per liter of derusting agent: 250g of hydrochloric acid with a mass fraction of 36%, 200g of oxalic acid, 100g of sodium carbonate, 30g of fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene Ether 3g, thiourea 15g, edetate disodium 20g, urotropine 10g.

[0023] The preparation method is as follows:

[0024] 1) each component is weighed by the above-mentioned mass number;

[0025] 2) Put the components weighed in step 1) into a flask, add water to 1L, and then stir at room temperature for 5 minutes to mix well to obtain a metal rust remover.

Embodiment 3

[0027] A metal derusting agent provided by the invention contains the following components per liter of derusting agent: 230g of hydrochloric acid with a mass fraction of 37%, 150g of oxalic acid, 120g of sodium carbonate, 20g of fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene Ether 7g, thiourea 10g, edetate disodium 40g, urotropine 15g.

[0028] The preparation method is as follows:

[0029] 1) each component is weighed by the above-mentioned mass number;

[0030] 2) Put the components weighed in step 1) into a flask, add water to 1L, and then stir at room temperature for 7 minutes to mix well to obtain a metal rust remover.

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PUM

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Abstract

The invention discloses a metal rust remover and a preparation method thereof, and aims to provide the rust remover which is capable of removing rusts on the surface of a metal and is simple in preparation method. According to the technical scheme, 1L of metal rust remover contains the following components: 150g to 250g of acid, 120g to 200g of oxalic acid, 100g to 150g of carbonate, 20g to 50g of fatty alcohol-polyoxyethylene ether, 3g to 7g of alkylphenol ethoxylates, 5g to 10g of thiourea, 20g to 40g of ethylene diamine tetraacetic acid, 10g to 20g of urotropin and the balance of water. The preparation method comprises the following steps: 1) weighing the components; 2) putting the components weighed by the step 1) in a flask, adding water to reach 1L and then stirring at a room temperature for 5 to 10 minutes so as to obtain the metal rust remover. The metal rust remover belongs to the technical field of metal cleaning.

Description

technical field [0001] The invention relates to a metal rust remover, in particular to a rust remover for removing steel, copper, aluminum or stainless steel, and belongs to the technical field of metal cleaning. Background technique [0002] Metal is easy to rust when placed outdoors or in the open air, which not only affects the appearance quality, but also affects the normal progress of painting, bonding and other processes. These rusts seriously affect the operation of subsequent processes and the quality of products. Resulting in the scrapping of materials, resulting in unnecessary economic losses. [0003] Therefore, rust removal is a necessary process in the pre-treatment link of surface treatment engineering, and it is also the first pass of surface treatment. In terms of technology, incomplete rust removal will directly affect the operation of the next process, and may pollute the subsequent production line; in terms of coating quality, incomplete rust removal will...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/02
Inventor 冯玉权
Owner WUZHOU HENGSHENG ELECTRONICS
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