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Waterborne anticorrosive coating for improving interface bonding force of rusty metal and anticorrosive coating and preparation method thereof

A technology of anti-corrosion coating and anti-corrosion coating, which is applied in the field of rusty metal surface treatment and anti-corrosion coating, which can solve the problems of human body and environment damage, low interface bonding force, falling off, etc. The effect of adhesion

Inactive Publication Date: 2015-04-29
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current rust treatment technology is mostly based on oil-soluble resin. Although the film layer formed after treatment can improve the anti-corrosion ability, the interface bonding force is not high, and it will fall off after a period of service, and the oil-soluble resin contains a lot of VOC. Great harm to human body and environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The water-based anti-corrosion coating provided in this example to improve the interfacial binding force between rusty metal and anti-corrosion coating is composed of component A and component B, and the mass ratio of the two is 2:1.

[0049] Wherein component A is made up of the component of following mass parts ratio:

[0050] Waterborne Epoxy Emulsion 40,

[0051] Anti-rust filler 15,

[0052] transformation solution 5,

[0053] pH stabilizer 5,

[0054] Auxiliary 1,

[0055] Deionized water 34;

[0056] Among them, the water-based epoxy emulsion is water-based epoxy emulsion K40 produced by Shenyang Baichen Chemical Technology Co., Ltd., with a solid content of 40-45% and an epoxy equivalent of 120-165 g / mol.

[0057] The anti-rust filler is ultra-fine zinc phosphate, the zinc content is more than 45%, and the particle size is 10μm~45μm.

[0058] The conversion solution is composed of an aqueous inorganic acid solution and an organic acid alcohol solution, and...

Embodiment 2

[0071] The water-based anti-corrosion coating provided in this example to enhance the interfacial binding force between rusty metal and anti-corrosion coating is composed of component A and component B, and the mass ratio of the two is 3:1.

[0072] Wherein component A is made up of the component of following mass parts ratio:

[0073] Waterborne Epoxy Emulsion 50,

[0074] Anti-rust filler 10,

[0075] Transformation solution 15,

[0076] pH stabilizer 3,

[0077] Auxiliary 2,

[0078] Deionized water 20;

[0079] The water-based epoxy emulsion is LD-301 water-based epoxy emulsion produced by Lianyungang Liangdu Paint Factory, with a solid content of 43-47% and an epoxy equivalent of 110-130g / mol.

[0080] The anti-rust filler is ultra-fine zinc phosphate, the zinc content is more than 45%, and the particle size is 10μm~45μm.

[0081] The conversion solution is composed of an aqueous inorganic acid solution and an organic acid alcohol solution, and the mass ratio of the...

Embodiment 3

[0092] The water-based anti-corrosion coating provided in this example to enhance the interfacial binding force between rusty metal and anti-corrosion coating is composed of component A and component B, and the mass ratio of the two is 4:1.

[0093] Wherein component A is made up of the component of following mass parts ratio:

[0094] Waterborne Epoxy Emulsion 60,

[0095] Anti-rust filler 5,

[0096] Transformation solution 20,

[0097] pH stabilizer 1,

[0098] Auxiliary 3,

[0099] Deionized water 11;

[0100] The water-based epoxy emulsion adopts GE-95 water-based epoxy emulsion produced by Shanghai Aishibo Silicone Materials Co., Ltd., with a solid content of 50-60% and an epoxy equivalent of 176-181g / mol.

[0101] The anti-rust filler is ultra-fine zinc phosphate, the zinc content is more than 45%, and the particle size is 10μm~45μm.

[0102] The conversion liquid is composed of an aqueous inorganic acid solution and an organic acid alcohol solution, and the mass ...

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Abstract

The invention discloses a waterborne anticorrosive coating for improving the interface bonding force of a rusty metal and an anticorrosive coating. The waterborne anticorrosive coating comprises a component A and a component B in a mass ratio of (2-4): 1, wherein the component A consists of the following components in parts by mass: 40-60 parts of waterborne epoxy emulsion, 5-15 parts of rust protection padding, 5-20 parts of transformation liquid, 1-5 parts of a pH stabilizer, 1-3 parts of an aid and 10-35 parts of deionized water; and the component B consists of a curing agent and deionized water in a mass ratio of (4-6): 1. The waterborne anticorrosive coating contains the active group transformation liquid capable of converting a rust layer, the activity of the transformation liquid in the waterborne anticorrosive coating can be ensured in the presence of the pH stabilizer, and the rust layer can be effectively dissolved and transformed, so that the interface bonding force of the rusty metal and the anticorrosive coating can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of rusty metal surface treatment and anti-corrosion coating, and in particular relates to a water-based anti-corrosion coating and a preparation method thereof for improving the interface binding force between rusty metal and anti-corrosion coating. Background technique [0002] Coating anti-rust coatings on metal surfaces is the first choice to ensure the safe service of materials. In order to obtain excellent corrosion resistance, the rust on the metal substrate must be removed before painting, otherwise the anticorrosion effect of the paint film will be poor due to the continuous expansion of rust. Therefore, rust removal treatment is an important part of the coating process and plays a decisive role in the success or failure of anti-corrosion coatings. [0003] However, in the maintenance process of many complex components such as large buildings, bridges, ships, and transmission towers, due to the limi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08
CPCC09D163/00C08K3/32C08K5/05C08K2003/321C08K2003/329C08K2201/003C09D5/08C09D7/61C09D7/63
Inventor 梁永纯马元泰聂铭钟万里林介东李瑛
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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