Water-based high-corrosion-resistant coating with excellent flushability, preparation method and application

A punchable, corrosion-resistant technology, applied in the field of water-based high corrosion-resistant coatings and its preparation, can solve the problems of coating salt spray performance not being stated in detail, unfavorable industrial application of coatings, and affecting coating molding and punching, etc., to achieve Avoid causing weak points, good punchability, and improve the effect of anti-corrosion

Active Publication Date: 2017-07-14
GUANGZHOU HUMAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The salt spray of this patented technology reaches 1500 hours, but it has the following disadvantages: it is realized by two components, and the service life is short; the inorganic filler is added in the formula, which affects the forming and punching of the coating; and the key raw material used is mussel sticky Attachin is a biological agent, which is not conducive to the industrial application of coatings, and the cost is also high
However, the addition of inorganic fillers in the formula, including zinc phosphochromate, titanium dioxide, fillers, etc., is detrimental to the punchability of the coating, and the salt spray performance of the coating has not been stated in detail

Method used

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  • Water-based high-corrosion-resistant coating with excellent flushability, preparation method and application
  • Water-based high-corrosion-resistant coating with excellent flushability, preparation method and application
  • Water-based high-corrosion-resistant coating with excellent flushability, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1. Preparation of water-based high corrosion-resistant coatings with excellent flushability

[0043] (1) Weigh the raw materials of the following components in proportion

[0044]

[0045] (2) Mix the above-mentioned raw materials and disperse them evenly to prepare a water-based super corrosion-resistant coating with a solid content of 20%. The viscosity of the coating is 22 ± 2s when coated with 4 cups.

[0046] 2. Coating the prepared water-based super corrosion-resistant coating on the aluminum foil to form a corrosion-resistant coating. First, the aluminum foil was degreased and dried, and then the above-mentioned coating was applied to the aluminum foil, and baked in an oven at 200°C for 60s to obtain a coating with a dry film thickness of 5 μm.

[0047] The corrosion-resistant coating prepared above has excellent alkali resistance, cooking resistance, and salt spray resistance after testing, and the salt spray resistance of the coating after stamping and bend...

Embodiment 2

[0049] 1. Preparation of water-based high corrosion-resistant coatings with excellent flushability

[0050] (1) Weigh the raw materials of the following components in proportion

[0051]

[0052] (2) Mix the above raw materials and disperse them evenly to prepare a water-based super corrosion-resistant coating with a solid content of 36.5%. The viscosity of the coating is 53 ± 5s when coated with 4 cups.

[0053] 2. Coating the prepared single-coated water-based super corrosion-resistant coating on the aluminum foil to form a corrosion-resistant coating. First, the aluminum foil was degreased and dried, and then the paint was applied to the aluminum foil, and baked in a 300°C oven for 25s to obtain a coating with a dry film thickness of 3 μm.

[0054] The corrosion-resistant coating prepared above has excellent alkali resistance, cooking resistance, and salt spray resistance after testing, and the salt spray resistance of the coating after stamping and bending is still con...

Embodiment 3

[0056] 1. Preparation of water-based high corrosion-resistant coatings with excellent flushability

[0057] (1) Weigh the raw materials of the following components in proportion

[0058]

[0059] (2) Mix the above raw materials and disperse them evenly to prepare a water-based super corrosion-resistant coating with a solid content of 40%. The viscosity of the coating measured by coating -4 cups is 110 ± 10s.

[0060] 2. Coating the prepared single-coated water-based super corrosion-resistant coating on the aluminum foil to form a corrosion-resistant coating. Firstly, the aluminum foil was degreased and dried, then the coating was applied to the aluminum foil, and baked in an oven at 300°C for 50s to obtain a coating with a dry film thickness of 5 μm.

[0061] The corrosion-resistant coating prepared above has excellent alkali resistance, cooking resistance, and salt spray resistance after testing, and the salt spray resistance of the coating after stamping and bending is s...

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Abstract

The invention belongs to the technical field of surface anticorrosion, and discloses a water-based high-corrosion-resistant coating with excellent flushability, a preparation method and application thereof. The coating contains the following components by mass: 25-60 parts of water-based resin; 2-8 parts of water-based crosslinking agent; 0.1-0.5 parts of catalyst; 4-10 parts of cosolvent; ~10 parts; 2~10 parts of water-based toughening resin; 0.1~0.5 parts of defoamer; 0.5~3 parts of thickener; water balance; The water-based high-corrosion-resistant coating of the present invention uses water-based resin as a film-forming material, has good construction performance, and is fast in curing. When the coating thickness is 2-5 μm, super corrosion resistance and neutral salt spray resistance can be obtained. More than 2000 hours, the acid salt spray resistance is more than 500h, the corrosion level can reach above 9.8, and the salt spray resistance of the coating remains unchanged after stamping or bending.

Description

technical field [0001] The invention belongs to the technical field of surface anticorrosion, and in particular relates to a water-based high corrosion-resistant coating with excellent flushability, a preparation method and application thereof. Background technique [0002] In the field of surface anticorrosion, especially the common technology in the field of metal surface anticorrosion, solvent-based systems are mostly used, and oily resin is used as the film-forming material. The high content of solvents brings a burden to the environment, or contains some harmful substances such as heavy metals, which is not environmentally friendly. It is good, and it is mostly designed as a two-component system, which has special requirements for the service life of the coating, and the service life of the coating is short; moreover, the method of adding inorganic fillers is often used to make up for coating defects and improve coating corrosion resistance. However, due to the high har...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/00C09D125/14C09D163/00C09D167/00C09D5/08C09D7/12B05D7/24B05D3/02
Inventor 陈兴耀黄艳轶李月峰金兴菊魏小飞
Owner GUANGZHOU HUMAN CHEM
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