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A kind of cross-linked borosulfate ester derusting paste

A sulfuric acid ester and cross-linked technology, which is applied in the field of cross-linked boron sulfate ester rust removal paste, can solve the problems of steel over-corrosion, large acid consumption, and economic losses.

Active Publication Date: 2021-01-05
苏州纳孚林科金属表面技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Materials such as ferrous metals and non-ferrous metals are prone to rust when placed outdoors or in the open air, which not only affects the appearance quality, but also affects the normal process of painting and bonding. necessary economic loss
[0003] The first generation of rust remover is a strong acid, which can chemically react with rust and metal oxides to form soluble salts, so as to achieve the purpose of rust removal. At the same time of rust removal, the acid can react with the base metal to release hydrogen. Hydrogen can generate pressure on rust and insoluble scale, which is beneficial to their peeling and reduction of high-valent iron, and accelerates the pickling process, but the traditional acid treatment method also has obvious defects: a large amount of hydrogen gas in the process The generation of hydrogen embrittlement will cause the steel to produce hydrogen embrittlement, which will cause the mechanical properties of the metal to decline and affect the strength of the steel itself; at the same time, it is easy to form acid mist, which will affect the health of the operator and corrode the surrounding equipment and environment; the consumption of acid is also large , increase the processing cost; this kind of acid will cause excessive corrosion of steel
In addition, the residues produced in large quantities need to be discharged frequently, which not only seriously corrodes industrial pipelines, but also pollutes the soil and the environment.
[0004] The second-generation rust remover is a chemical substance containing nitrogen and phosphorus. Although it can overcome the disadvantages of the first-generation rust remover, such as being harmful to the human body, producing acid mist, and corroding the substrate, it is easy to enter the water system and cause eutrophication.

Method used

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  • A kind of cross-linked borosulfate ester derusting paste
  • A kind of cross-linked borosulfate ester derusting paste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. First prepare boron sulfate rust remover, the preparation steps are as follows:

[0028] (1) Put 60 parts of nonylphenol into the reaction kettle, heat to 110°C, then slowly add 3 parts of boric acid, and react for 120 minutes after the addition;

[0029] (2) After the reaction is completed, cool down to 60°C, add 1 part of auxiliary agent glycerin, and cool down to normal temperature naturally;

[0030] (3) Slowly add 1 part of S under vacuum 2 o 3 , stirring while adding, after the addition, the temperature was raised to 60°C, and the reaction was carried out for 120 minutes;

[0031] (4) After the reaction is completed, the temperature is lowered to below 50°C, 2 parts of auxiliary agent glycerol is added, and the reaction is carried out for 60 minutes, and then the temperature is naturally lowered to below 30°C to obtain the product.

[0032] 2. Mix the prepared borosulfate rust remover with the thickener and stir evenly; the mass ratio is 100:0.1 to obtain th...

Embodiment 2

[0038] 1. First prepare boron sulfate rust remover, the preparation steps are as follows:

[0039] (1) Put 80 parts of nonylphenol polyoxyethylene ether NP-10 into the reactor, heat it to 120°C, then slowly add 4 parts of boric acid, and react for 100 minutes after the addition;

[0040] (2) After the reaction is completed, cool down to 70°C, add 2 parts of auxiliary agent sorbitol, and cool down to normal temperature naturally;

[0041] (3) Slowly add 2 parts of SO under vacuum 3 , stirring while adding, after the addition, the temperature was raised to 80°C, and the reaction was carried out for 110 minutes;

[0042] (4) After the reaction is completed, the temperature is lowered to below 50°C, 3 parts of epoxy soybean oil is added as an auxiliary agent, reacted for 70 minutes, and then the temperature is naturally lowered to below 30°C to obtain the product.

[0043] 2. Mix the prepared borosulfate rust remover with the thickener and stir evenly; the mass ratio is 100:0.5 ...

Embodiment 3

[0049] 1. First prepare boron sulfate rust remover, the preparation steps are as follows:

[0050] (1) Put 90 parts of nonylphenol polyoxyethylene ether NP-20 into the reactor, heat it to 130°C, then slowly add 5 parts of boric acid, and react for 80 minutes after the addition;

[0051] (2) After the reaction is completed, the temperature is lowered to 80° C., 3 parts of auxiliary agent propylene glycol are added, and the temperature is naturally lowered to normal temperature;

[0052] (3) Add 3 parts of S slowly under vacuum 2 o 3 , stirring while adding, after the addition, the temperature was raised to 90°C, and the reaction was carried out for 100 minutes;

[0053] (4) After the reaction is completed, the temperature is lowered to below 50°C, 5 parts of auxiliary agent mannitol is added, and the reaction is carried out for 80 minutes, and then the temperature is naturally lowered to below 30°C to obtain the product.

[0054] 2. Mix the prepared borosulfate rust remover ...

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Abstract

The invention provides crosslinking type boron sulphate rust removal paste. The crosslinking type boron sulphate rust removal paste is formed through mixing of a boron sulphate rust removal agent anda thickening agent with the mass ratio being 100:0.1-1. The crosslinking type boron sulphate rust removal paste is strong rust removal paste and has a rapid and simple rust removal function for severerust, and the rust prevention function is achieved. The rust removal effect is superior to the rust removal effect of a strong acid or nitrogen and phosphorus rust removal agent, and the crosslinkingtype boron sulphate rust removal paste is green, environment-friendly and free of toxic and side effects on human bodies.

Description

technical field [0001] The invention relates to the technical field of rust removal, in particular to a cross-linked boric sulfate ester rust removal paste. Background technique [0002] Materials such as ferrous metals and non-ferrous metals are prone to rust when placed outdoors or in the open air, which not only affects the appearance quality, but also affects the normal process of painting and bonding. Necessary economic loss. [0003] The first generation of rust remover is a strong acid, which can chemically react with rust and metal oxides to form soluble salts, so as to achieve the purpose of rust removal. At the same time of rust removal, the acid can react with the base metal to release hydrogen. Hydrogen can generate pressure on rust and insoluble scale, which is beneficial to their peeling and reduction of high-valent iron, and accelerates the pickling process, but the traditional acid treatment method also has obvious defects: a large amount of hydrogen gas in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/08
Inventor 王永光宋小林宋烨桐
Owner 苏州纳孚林科金属表面技术有限公司
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