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Environment-friendly water-based antirust agent and preparation method thereof

A water-based anti-rust agent, an environmentally friendly technology, applied in the direction of metal material coating technology, etc., can solve the problems of anti-rust performance decline, environmental pollution, human harm, etc., to achieve good anti-rust performance, wide applicability, anti-rust long term effect

Active Publication Date: 2015-07-15
洛斯石油(浙江)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the early water-based anti-rust agents contained highly toxic nitrite, which was harmful to the human body and caused environmental pollution. After the anti-rust layer on the metal surface was dried, a layer of hoarfrost would be formed, causing the gaps in the anti-rust layer to become larger and Decrease its anti-rust performance
In addition, phosphating solution is also used in industry for anti-rust treatment of metal surfaces, but the formed phosphating layer will affect subsequent processing, and the phosphating solution contains a large amount of phosphorus, which will make the water eutrophic after being discharged into the environment change

Method used

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  • Environment-friendly water-based antirust agent and preparation method thereof
  • Environment-friendly water-based antirust agent and preparation method thereof
  • Environment-friendly water-based antirust agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] An environment-friendly water-based antirust agent, its raw material composition and mass ratio are:

[0014] 39kg deionized water, 7kg glycerin, 25kg diglycolamine, 8kg tartaric acid, 3kg itaconic acid, 0.5kg sodium molybdate, 1kg sodium tungstate, 6kg coconut acid diethanolamide 6501, 0.5kg weight of anhydrous sodium carbonate .

[0015] Among them, the manufacturer of coconut acid diethanolamide 6501 is Guangzhou Huayu Fine Chemical Co., Ltd., with a specification of 1:1.

[0016] A production method of an environment-friendly water-based antirust agent, comprising the following steps:

[0017] A. Add water, diglycolamine, tartaric acid, and itaconic acid to the reaction kettle according to the ratio and stir until the reactants are completely dissolved;

[0018] B. Add sodium molybdate and sodium tungstate according to the ratio, heat to 65°C and stir to dissolve, then add coconut acid diethanolamide 6501, glycerin and anhydrous sodium carbonate, stir and dissolve...

Embodiment 2

[0022] An environment-friendly water-based antirust agent, its raw material composition and mass ratio are:

[0023] 52kg deionized water, 6kg glycerin, 27kg diglycolamine, 4kg tartaric acid, 4.5kg itaconic acid, 1kg sodium molybdate, 0.5kg weight of sodium tungstate, 5kg cocoic acid diethanolamide 6501, 0.7kg anhydrous carbonic acid sodium.

[0024] The production method is generally the same as in Example 1, except that in step B, it is heated to 70° C. and stirred to dissolve.

Embodiment 3

[0028] An environment-friendly water-based antirust agent, its raw material composition and mass ratio are:

[0029] 56kg deionized water, 10kg glycerin, 22kg diglycolamine, 6kg tartaric acid, 2.5kg itaconic acid, 0.6kg sodium molybdate, 0.5kg sodium tungstate, 4kg coconut acid diethanolamide 6501, 0.5kg anhydrous sodium carbonate .

[0030] The production method is generally the same as that in Example 1, except that in step B, it is heated to 80° C. and stirred to dissolve.

[0031] As an application example, the above-mentioned anti-rust agent is tested according to the specified standards, and the technical indicators are as follows:

[0032]

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PUM

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Abstract

The invention discloses an environment-friendly water-based antirust agent and a preparation method thereof. The antirust agent comprises the following raw materials in parts by mass: 5-10 parts of glycerin, 20-28 parts of diglycolamine, 4-8 parts of tartaric acid, 2.5-5 parts of itaconic acid, 0.5-1 part of sodium molybdate, 0.5-2 parts of sodium tungstate, 3-6 parts of coco fatty acid diethanol amide 6501, 0.5-1 part of anhydrous sodium carbonate and 39-64 parts of water. The preparation method comprises the steps of raw material mixing, reacting, heating and stirring. The environment-friendly water-based antirust agent disclosed by the invention is good in rust resistance, long in rust-proof life, wide in applicability, free of nitrite or phosphorus, safe to a human body and in line with the requirement of environmental protection.

Description

technical field [0001] The invention belongs to the field of metal surface treatment, and in particular relates to an environment-friendly water-based antirust agent and a preparation method thereof. Background technique [0002] Metals will react with oxygen, water and other substances in the atmosphere to cause corrosion, which directly affects the appearance and performance of metal materials. In the past, people often used anti-rust oil to treat the surface of metal, but because the anti-rust oil is not easy to remove, it will bring great trouble to the subsequent processing. However, the water-based antirust agent does not require special surface treatment of the workpiece during subsequent processing. In recent years, the development of water-based antirust agent products has become a new development trend. Most of the early water-based anti-rust agents contained highly toxic nitrite, which was harmful to the human body and caused environmental pollution. After the an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/05
Inventor 王永垒孙金余方红霞李长江
Owner 洛斯石油(浙江)有限公司
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