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Method for preparing environment-friendly type anti-corrosive and anti-fingerprint metal surface coating

A kind of metal surface, environment-friendly technology, applied in the direction of surface coating liquid device, anti-corrosion coating, pretreatment surface, etc., can solve the problem of no anti-corrosion performance, achieve good anti-corrosion performance, anti-scratch performance and processing Effects of improving performance and reducing coefficient of friction

Inactive Publication Date: 2011-11-16
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing patents, water-based acrylate and water-based polyurethane are generally used as base resins for anti-fingerprint liquids. Such anti-fingerprint liquids are one-component coatings that do not require post-curing and have excellent performance in anti-fingerprints. , but no particularly outstanding anti-corrosion properties

Method used

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  • Method for preparing environment-friendly type anti-corrosive and anti-fingerprint metal surface coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Component A:

[0034] components weight Waterborne epoxy resin 600g Nano silica 10g 3-aminopropyltriethoxysilane coupling agent 13g Microcrystalline Wax Dispersion 45g Zirconium Zirconium Hydrofluoride 12g Deionized water 500g 2-octanol defoamer 5g Cellulose acetate-butyrate leveling agent 4g

[0035] Component B: 150g of water-based epoxy-modified amine curing agent, 7g of imidazole type curing accelerator.

[0036] Add 10g of nano-silica and 90g of water in the emulsifier to prepare a dispersion of nano-silica with a mass fraction of 10%, disperse for 15 minutes at a speed of 8000r / min, and then add water-based epoxy resin and silane in sequence according to the above formula Coupling agent, microcrystalline wax dispersion liquid, zirconium compound, remaining deionized water, defoamer and leveling agent are stirred evenly to form component A containing nano silicon dioxide (particle size 40-70nm). Then ...

Embodiment 2

[0038] Component A:

[0039] components weight Waterborne epoxy resin 550g Nano silica 20g γ-aminopropyltriethoxysilane coupling agent 10g Microcrystalline Wax Dispersion 70g Zirconium Zirconium Hydrofluoride 9g Deionized water 300g Glyceryl monoricinoleate defoamer 3 Polyacrylic acid leveling agent 4

[0040] Component B: 140g of water-based epoxy-modified amine curing agent, 6g of acetic acid type curing accelerator.

[0041] Add 20g of silicon dioxide and 200g of deionized water into the emulsifier to prepare a silicon dioxide dispersion with a mass fraction of 10%, disperse for 15 minutes at a rotation speed of 8000r / min, and then add water-based epoxy resin and silane in sequence according to the above formula Coupling agent, microcrystalline wax dispersion liquid, zirconium compound, deionized water, defoaming agent and leveling agent are stirred at high speed to form component A containing nano silicon diox...

Embodiment 3

[0043] After coating the product obtained in Example 1 on the surface of a metal (tinplate sheet) and drying it to form a film, press it with your thumb to see if there are any fingerprints left. Tests show that the effect of fingerprint resistance is obvious.

[0044] There is no trace of fingerprints after pressing with fingers, and it has good fingerprint resistance. Simultaneously placed in 5% NaOH and 5% H 2 SO 4 In the solution, it can reach 6-10 days without foaming and falling off, and has excellent corrosion resistance.

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Abstract

The invention relates to a composition for protecting metal surfaces, in particular to a preparation method of an environmentally friendly anticorrosive fingerprint resistant paint for metal surfaces. The composition contains an A component and a B component, the A component takes waterborne epoxy resin as a matrix resin and nano-silica, a silane coupling agent, microcrystalline wax disperse liquid, zirconium complex, deionized water, defoamer and a levelling agent are added, thus obtaining the A component; the B component contains a waterborne epoxy modified amine curing agent and a certain quantity of epoxy curing promoter. The two components are mixed and stirred evenly at a ratio of 4:1 to 3:1 to form the environmentally friendly anticorrosive fingerprint resistant paint for metal surfaces. After coating, metal can be heated by going through a baking channel at a certain temperature, the film forming time can be controlled by adjusting the heating period and finally a transparent coating layer which has quite good anticorrosive protection function over metal and fingerprint resistant function is formed.

Description

technical field [0001] The invention relates to a metal surface protection composition, in particular to a preparation method of an environment-friendly anti-corrosion and anti-fingerprint metal surface paint. Background technique [0002] The research and production of anti-fingerprint began in Japan. The original purpose was to meet the use in the field of household appliances, because workers in the production process of household appliances touched many times, leaving fingerprints and affecting the appearance. With the improvement of people's living standards, fingerprint resistance is not only required in the home appliance industry, but also in automobiles, office supplies and other fields. The anti-fingerprint treatment has also shifted from inorganic to organic, and the process has gradually changed from a two-step method to a one-step method with the development of water-based coatings. In the prior art, the anti-fingerprint steel plate treatment needs to be coated...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D5/00B05D7/24B05D3/02C23F15/00
Inventor 任天斌冯玥刘祥王永涛朱金鑫钱志国
Owner TONGJI UNIV
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