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Water-based rust-converting anti-corrosive primer

A technology of rust conversion and anti-rust primer, applied in anti-corrosion coatings, coatings, etc., can solve the problems of increasing manpower, material consumption, prolonging working time, accelerating metal corrosion, etc., achieving low overall cost, firm and dense film layer, The effect of strong adhesion

Active Publication Date: 2015-03-11
ZIBO HUIHE PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only does it fail to prevent rust, but it will further expand the rust surface and accelerate metal corrosion
However, grinding the rust surface of the metal surface before use will increase the consumption of a lot of manpower and material resources and prolong the working time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Prepare the water-based rust conversion anti-rust primer according to the following formula: 45 parts of sodium aluminum phosphate acid, 35 parts of vinyl chloride-vinylidene chloride copolymer emulsion, 2 parts of isomer alcohol polyoxyethylene polyoxypropylene ether, 2 parts of silicon-free defoamer , 6 parts of polyurethane associative thickener, 15 parts of deionized water.

[0019] According to GB / T1720-79(89), the adhesion of the paint film is determined to be the first grade, and the performance test of the primer of this example is carried out by using the indoor simulated accelerated test method: take 30 medium carbon with a length, width and thickness of 500mm×500mm×5mm Steel plate, the total rust surface on the steel plate is 250mm 2 After the upper surface is coated with the primer of this example and dried naturally, it is placed in a constant temperature and humidity room at 50°C and 80% saturated humidity. After 7 days, it is detected that there is no rus...

Embodiment 2

[0021] Prepare the water-based rust conversion anti-rust primer according to the following formula: 47 parts of acid sodium aluminum phosphate, 33 parts of vinyl chloride-vinylidene chloride copolymer emulsion, 1.5 parts of isomeric alcohol polyoxyethylene polyoxypropylene ether, 2.5 parts of silicon-free defoamer , 5 parts of polyurethane associative thickener, 16 parts of deionized water.

[0022] According to GB / T1720-79(89), the adhesion of the paint film is determined to be the first grade, and the performance test of the primer of this example is carried out by using the indoor simulated accelerated test method: take 30 medium carbon with a length, width and thickness of 500mm×500mm×5mm Steel plate, the total rust surface on the steel plate is 250mm 2 After the upper surface is coated with the primer of this example and dried naturally, it is placed in a constant temperature and humidity room at 50°C and 80% saturated humidity. After 7 days, it is detected that there is ...

Embodiment 3

[0024] Prepare the water-based rust conversion anti-rust primer according to the following formula: 43 parts of phosphating solution, 37 parts of acrylic emulsion with a pH value of 2~4, 2.5 parts of isomeric alcohol polyoxyethylene polyoxypropylene ether, 1.5 parts of silicon-free defoamer, 4 parts of polyurethane associative thickener, 17 parts of deionized water.

[0025] The adhesion of the paint film is first-class, and the performance test of the primer in this example is carried out by using the indoor simulated accelerated test method: take a 30 medium carbon steel plate with a length, width, and thickness of 500mm×500mm×5mm, and the total rust surface on the steel plate is 250mm 2 , the upper surface is coated with the primer of this example and dried naturally, and placed in a constant temperature and humidity room at 50°C and 80% saturated humidity. After 7 days, it is detected that the total rust surface on the upper surface of the steel plate is less than 7.6mm 2 ...

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Abstract

A water-based rust-converting anti-corrosive primer belongs to the technical field of water-based paint products and is characterized by comprising the following components in parts by weight: 40 to 50 parts of a water-based rust-converting agent, 30 to 40 parts of an anion-modified emulsion, 1 to 3 parts of a stabilizer, 1 to 3 parts of a defoamer, 1 to 10 pats of a thickener and 10 to 20 parts of deionized water. According to the primer provided by the invention, chemical reaction occurs between the water-based rust-converting agent and rust on the surface of metal, so that the rust of ferric oxide (Fe2O3) is reduced to ferric (Fe) which can be almost dissolved with steel as a whole, and then calcium, manganese, chromium, nickel or other metal in the steel is converted into an alloy film. When in use, the primer can be sprayed directly to achieve the best effect, and primer, intermediate coat and finishing coat can be omitted, so that the cost for rust protection is greatly lowered, and the labor intensity and the working time are decreased at the same time.

Description

Technical field [0001] A water-based rust conversion anti-rust primer, belonging to the technical field of water-based paint products. Background technique [0002] With the development of technology, water-based paint products are becoming more and more suitable for market use in terms of product performance. It has been recognized by the market in many fields. Water-based raw material technology and formulation technology are gradually improving. There are more and more types of water-based coatings. Some of their properties have gradually caught up with or even surpassed solvent-based products. Among them, water-based architectural decorative coatings (latex paint), Water-based wood paint, water-based metal paint, water-based glass paint, water-based plastic paint, water-based anti-corrosion paint, water-based automotive paint, etc. are all booming. Like other water-based coatings, the development of water-based anti-rust paint is still in its early stages. Compared wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/06C09D133/00C09D5/08C09D7/12
CPCC08L2205/03C09D5/08C09D7/65C09D125/14C09D127/06C09D133/00C08L71/02C08L75/04C08K2003/321C08K3/36
Inventor 丁慎峰
Owner ZIBO HUIHE PAINT
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