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Chrome-free fingerprint resistant water-based paint

A water-based paint and fingerprint-resistant technology, applied in the field of paint, can solve the problems of chromate pollution, poor electrical conductivity, insufficient corrosion resistance, etc., and achieve the effects of scratch resistance, blackening resistance, and excellent corrosion resistance.

Inactive Publication Date: 2011-07-27
JIANGSU DAZHONG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN201333824Y coats inorganic anti-fingerprint film on the basis of chromium-free passivation film, which not only solves the pollution problem of chromate, but also solves the problem of the decline of anti-fingerprint performance of organic film
[0005] The most excellent performance of this inorganic series film is good fingerprint resistance, but the corrosion resistance is not as good as organic-inorganic composite passivation
Due to the chromate passivation method, the film can exert short-term rust resistance under relatively mild conditions, but its corrosion resistance is not sufficient for long-term or harsher environments.
In addition, its conductivity is relatively poor

Method used

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  • Chrome-free fingerprint resistant water-based paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation steps of a chromium-free fingerprint-resistant water-based coating of the present invention are as follows: the formula ratio is by weight:

[0026] (1) Preparation of nano-oxide concentrated slurry: Mix 1 part of silicon dioxide, 0.1 part of modifier silane coupling agent and 98 parts of water, then perform high-speed shear dispersion, stir at 500r / min for 2 hours to prepare nano-oxide Concentrated slurry.

[0027] (2) Mixing preparation: take 5 parts of nano-oxide concentrated slurry prepared in step (1), 30 parts of water-based polyurethane emulsion, 0.2 parts of zirconium ions, 0.3 parts of titanium ions, 0.05 parts of phosphoric acid and 1 part of wax, and mix well Adjust the pH to 7 to obtain the product chrome-free anti-fingerprint water-based paint.

[0028] The role of the main components of the chromium-free fingerprint-resistant water-based paint of the present invention:

[0029] Water-based polyurethane emulsion is the main film former, wh...

Embodiment 2

[0035] The preparation steps of a chromium-free fingerprint-resistant water-based coating of the present invention are as follows: the formula ratio is by weight:

[0036] (1) Preparation of nano-oxide concentrated slurry: Mix 30 parts of zinc oxide, 15 parts of modifier silane coupling agent and 55 parts of water, then perform high-speed shear dispersion, and stir at 3500r / min for 0.5h to prepare nano-oxide Concentrated slurry.

[0037] (2) Mixing preparation: Take 80 parts of nano-oxide concentrated slurry prepared in step (1), 75 parts of water-based polyurethane emulsion, 1 part of molybdate ion, 2 parts of vanadate ion, 2 parts of tungstate ion, phosphate antirust 5 parts of pigment and 5 parts of wax are fully mixed and adjusted to pH 8 to obtain the product chrome-free anti-fingerprint water-based paint.

Embodiment 3

[0039] The preparation steps of a chromium-free fingerprint-resistant water-based coating of the present invention are as follows: the formula ratio is by weight:

[0040] (1) Preparation of nano-oxide concentrated slurry: Mix 15 parts of titanium dioxide, 10 parts of modifier silane coupling agent and 80 parts of water, then perform high-speed shear dispersion, stir at 2000r / min for 1h to prepare concentrated nano-oxide pulp.

[0041] (2) Mixing preparation: Take 60 parts of nano-oxide concentrated slurry prepared in step (1), 50 parts of water-based polyurethane emulsion, 1 part of titanium ion, 2 parts of molybdate ion, 1 part of phosphate, amino trimethylene phosphonic acid 2 parts of ATMP and 3 parts of wax, mix well and adjust the pH to 9 to obtain the product chrome-free anti-fingerprint water-based coating.

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Abstract

The invention relates to a chrome-free fingerprint resistant water-based paint which is used for coating galvanized plates and belongs to the technical field of paints. The chrome-free fingerprint resistant water-based paint is prepared by intensively and evenly mixing 5-80 parts of nano-oxide concentrated slurry, 30-75 parts of water-based polyurethane emulsion, 0.5-5 parts of metal ion, 0.05-5 parts of phosphorus and 1-5 parts of wax and then adjusting the pH. The invention provides an environment-friendly paint system which can satisfy various comprehensive properties of the galvanized plates and can ensure that the galvanized plates have excellent comprehensive properties such as corrosion resistance, fingerprint resistance, conductivity, coating property, scratch resistance, black patina resistance and the like.

Description

technical field [0001] The invention relates to a chrome-free anti-fingerprint water-based paint for manufacturing the surface of an electrogalvanized sheet, belonging to the technical field of paint. Background technique [0002] Galvanized steel sheets are widely used in the field of home appliances. In the production process of household appliances, due to the requirements of the process, many parts are inevitably touched by workers many times. The sweat on the operator's hands will form obvious fingerprints or palm prints on the surface of the parts. The light reflection and absorption of the surface of the electro-galvanized sheet here The state will change, and compared with the part without fingerprints, the reflected light of the part with fingerprints will decrease, resulting in blackening. Once the galvanized steel sheet shows fingerprints, on the one hand, it will easily cause the steel sheet to rust, and on the other hand, it will affect the appearance of the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/08
Inventor 李宁王艳青孙子良黎德育王臻邹忠利王劲木
Owner JIANGSU DAZHONG NEW MATERIAL TECH CO LTD
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