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Functional water-based anti-flash-rust agent and preparation method thereof

An anti-flash rust agent and functional technology, applied in anti-corrosion coatings, coatings, epoxy resin coatings, etc., can solve problems such as slow volatilization speed, easy rusting of metal substrates, poor anti-flash rust effect, etc., to achieve Effect of lowering surface tension, enhancing adhesion and corrosion resistance, improving flash rust prevention and corrosion inhibition

Active Publication Date: 2022-04-15
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water-based coatings are one of the representatives of green and environmentally friendly coatings because water is used as the main dispersion medium. However, during the construction of water-based coatings, due to the slow volatilization rate of water, metal substrates are often prone to rust during the drying process of the coating.
Therefore, the anti-flash rust agent is an indispensable and important component in the formulation design of water-based coatings, while the traditional anti-flash rust agents often contain toxic and harmful substances nitrite, and are harmful to metal substrates such as cast iron and carbon steel The welding seam anti-flash rust effect is not good

Method used

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  • Functional water-based anti-flash-rust agent and preparation method thereof
  • Functional water-based anti-flash-rust agent and preparation method thereof
  • Functional water-based anti-flash-rust agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Mix 0.1 mol of dehydrated oleic acid polyoxyethylene ether phosphate with 300 ml of toluene, add 0.2 g of boron trifluoride etherate complex, and stir and add 0.1 mol of ethylene glycol dishrinkle Glyceryl ether, the reaction temperature is controlled at 85°C, and the intermediate 1 is obtained after 30 minutes of reaction;

[0029] (2) Add 0.2mol diethanolamine, react at 80°C for 60min to obtain main active compound 2;

[0030] (3) Distill out the organic solvent, cool down to 60°C, stir and add 0.15mol morpholine and deionized water, add deionized water according to the solid content of 80%, keep warm for 3-10h, filter the material, and obtain the function of phosphate group Type water-based anti-flash rust product.

[0031] (4) the water-based anti-flash rust agent prepared by the present invention is added in the water-based epoxy coating, and the addition is 1.5%, and the coating is sprayed on the cast iron surface afterwards, and is sprayed with the coating t...

Embodiment 2

[0034] Basically the same as Example 1, the difference is that the following steps are also included between steps (1) and (2): add 0.03mol oxalic acid and 0.005mol p-toluenesulfonic acid to intermediate 1, and react at 80°C for 120min; Carry out the reaction in step (2) again.

Embodiment 3

[0036] (1) Mix 0.1 mol of dehydrated octylphenol polyoxyethylene ether phosphate with 300 ml of dioxane, add 0.2 g of ammonium persulfate, and stir and add 0.08 mol of 1,4-butanediol under the condition of keeping warm at 55°C Diglycidyl ether, the reaction temperature is controlled at 110°C, and the intermediate 1 is obtained after 40 minutes of reaction;

[0037] (2) Add 0.025mol succinic acid and 0.005mol p-toluenesulfonic acid to intermediate 1, react at 110°C for 30min;

[0038] (3) Add 0.2mol monoethanolamine, react at 40°C for 120min to obtain main active compound 2;

[0039] (4) distill off the organic solvent, lower the temperature to 60°C, stir and add 0.15mol tolylbenzotriazole and deionized water, add the deionized water according to the solid content of 25%, keep warm for 3-10h, filter and discharge the material, and obtain Phosphate-based functional water-based anti-flash rust agent product.

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Abstract

The invention relates to the technical field of water-based coatings, in particular to a functional water-based anti-flash-rust agent and a preparation method thereof. Comprising the following steps: 1, in the presence of a solvent and a catalyst, carrying out a reaction on a binary epoxy compound and polyoxyethylene ether phosphate to prepare an intermediate 1; 2, adding an excessive amount of an alcohol amine compound to react to prepare a main active compound 2; and 3, distilling out the organic solvent, cooling, adding deionized water and a nitrogen-containing heterocyclic organic compound according to the designed solid content, and filtering to obtain the functional water-based anti-flash-rust agent finished product. A dicarboxylic acid compound chain extension step can also be added between the step 1 and the step 2. The functional water-based anti-flash-rust agent can comprehensively improve the anti-flash-rust and corrosion inhibition capacity through multiple factors, and can be applied to the surfaces of various metals such as carbon steel, cast iron, copper and aluminum.

Description

technical field [0001] The invention relates to the technical field of water-based coatings, in particular to a functional water-based anti-flash rust agent and a preparation method thereof. Background technique [0002] With the increasingly stringent national environmental protection policies, green and environmentally friendly coatings are becoming a major trend in the development of coatings to replace traditional oil-based coatings. Water-based coatings are one of the representatives of green and environmentally friendly coatings because they use water as the main dispersion medium. However, during the construction of water-based coatings, due to the slow volatilization rate of water, metal substrates are often prone to rust during the drying process of the coating. Therefore, the anti-flash rust agent is an indispensable and important component in the formulation design of water-based coatings, while the traditional anti-flash rust agents often contain toxic and harmfu...

Claims

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Application Information

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IPC IPC(8): C08G65/332C08G65/331C09D5/08C09D163/00
Inventor 杨延格曹京宜王家良李亮王兴奇方志刚
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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