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Water-based rust converted antirust liquid and preparation method thereof

A technology of rust conversion and anti-rust liquid, which is applied in anti-corrosion coatings, coatings, metal material coating processes, etc., can solve the problems of slow and incomplete rust conversion, incomplete rust conversion, and weak penetration, etc., to achieve The effect of low cost of raw materials, fast conversion of rust, and simple preparation process

Inactive Publication Date: 2015-01-28
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the production raw materials such as bis-tetra-n-butylammonium dichromate and sodium nitrate have certain toxicity, and the penetrating power is not strong, and the iron rust conversion is not thorough; Chinese patent CN201010150039. The composition of the treatment liquid, the pre-treatment liquid is made of the following weight ratio raw materials: 19-22% metal iron powder, 9-11% urotropine, 9-11% glycerin, 58-61% water; the post-treatment liquid is made of the following weight Made from raw materials: 45.5-47.5% polyphosphoric acid, 37-40% water, 2.5-3.5% manganese carbonate, 8-10% acetic acid, 4-5% tannic acid, this patent solves the water-based environmental protection and has a better Rust conversion effect, but there is still the disadvantage that the rust conversion speed is slow and not very thorough
Both of the above two patents have the disadvantage that it is not easy to compound with film formers to prepare rusty coating films with waterproof performance

Method used

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  • Water-based rust converted antirust liquid and preparation method thereof
  • Water-based rust converted antirust liquid and preparation method thereof
  • Water-based rust converted antirust liquid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Preparation of phosphoric acid-aluminum hydroxide mixture:

[0017] After taking 4 grams of phosphoric acid and 8 grams of deionized water and mixing them evenly, add 4 grams of aluminum hydroxide and keep stirring until completely dissolved to form a phosphoric acid-aluminum hydroxide mixture.

[0018] (2) Prepare the target product water-based rust conversion anti-rust liquid:

[0019] First, pour 3 grams of pyrogallic acid and 3 grams of ethanol into 9 grams of deionized water and mix well, then add 4 grams of tea juice concentrate, 6 grams of polyaniline emulsion, 1 gram of oxalic acid and Add 4 grams of 10wt% glucose solution, finally add phosphoric acid-aluminum hydroxide mixed solution and 50 grams of deionized water, control the temperature between 25-35° C., and continue stirring for 30 minutes to obtain the target product of the present invention.

Embodiment 2

[0021] (1) Preparation of phosphoric acid-aluminum hydroxide mixture:

[0022] After taking 5 grams of phosphoric acid and 10 grams of deionized water and mixing them evenly, add 6 grams of aluminum hydroxide and keep stirring until completely dissolved to form a phosphoric acid-aluminum hydroxide mixed solution.

[0023] (2) Prepare the target product water-based rust conversion anti-rust liquid:

[0024] First, pour 2 grams of gallic acid and 2 grams of ethanol into 6 grams of deionized water and mix well, then add 4 grams of tea juice concentrate, 8 grams of polyaniline emulsion, 1 gram of citric acid and 2 Gram 10wt% glucose solution, finally add phosphoric acid-aluminum hydroxide mixed solution and 50 grams of deionized water, the temperature is controlled between 25~35 ℃, continue to stir for 30 minutes, just make the target product of the present invention.

Embodiment 3

[0026] (1) Preparation of phosphoric acid-aluminum hydroxide mixture:

[0027] After taking 5 grams of phosphoric acid and 10 grams of deionized water and mixing them evenly, add 6 grams of aluminum hydroxide and keep stirring until completely dissolved to form a phosphoric acid-aluminum hydroxide mixed solution.

[0028] (2) Prepare the target product water-based rust conversion anti-rust liquid:

[0029] First, pour 5 grams of gallic acid and 5 grams of ethanol into 15 grams of deionized water and mix well, then add 3 grams of tea juice concentrate, 4 grams of polyaniline emulsion, 1 gram of salicylic acid and Add 3 grams of 10wt% glucose solution, finally add phosphoric acid-aluminum hydroxide mixed solution and 50 grams of deionized water, control the temperature between 25-35°C, and continue stirring for 30 minutes to obtain the target product of the present invention.

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Abstract

The invention discloses a water-based rust converted antirust liquid and a preparation method thereof and belongs to the technical field of rust removal and prevention for the surface of a steel structure. The water-based rust converted antirust liquid is mainly prepared from polyphenol, glucose, phosphoric acid, polyaniline, organic acids and the like. The water-based rust converted antirust liquid can be directly used for rust removal and prevention for the rusty surface of the steel structure and can be further compounded with a film forming matter for finish coating. The water-based rust converted antirust liquid disclosed by the invention has the characteristics of being full and thorough in rust conversation ratio and excellent in antiseptic property.

Description

Technical field: [0001] The invention belongs to the technical field of rust removal and antirust on steel structure surfaces, and in particular relates to an aqueous rust conversion antirust liquid and a preparation method thereof. Background technique: [0002] At present, the anticorrosion of domestic steel structures still uses the old process of painting after sandblasting. Although the anticorrosion effect is good, there are also complex structural parts with dead angles in sandblasting and shot blasting processes, high power consumption, dust pollution, noise pollution, and cost. High and many other shortcomings. Rust removal and rust prevention of steel structure products has always been an important issue for technicians in the related surface treatment industry. Chinese patent CN200510031496.X discloses that orthophosphoric acid, bis-tetra-n-butylammonium dichromate, sodium nitrate, zinc oxide, etc. have been used to prepare high-efficiency rust-removing and rust-...

Claims

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Application Information

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IPC IPC(8): C23C22/07C09D133/00C09D163/00C09D167/08C09D5/08C09D7/12
CPCC23C22/07C09D5/08C09D7/40C09D133/00C09D163/00C09D167/08
Inventor 古绪鹏乔红斌杨建国宁珅夏友谊章昌华
Owner ANHUI UNIVERSITY OF TECHNOLOGY