Water-based chromium-free fingerprint-resistant paint for galvanized steel plate

A galvanized steel sheet, fingerprint-resistant technology, applied in the field of coatings, can solve the problems of excessive curing capacity requirements of production lines, failure to achieve self-lubricating effects, and inability to guarantee performance, reduce energy consumption, solve pollution problems, and improve molding processing. performance effect
CN104449154AInactive Publication Date: 2015-03-25HEFEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI UNIV OF TECH
Publication Date
2015-03-25
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses water-based chromium-free fingerprint-resistant paint for a galvanized steel plate. The paint comprises raw materials in parts by weight as follows: 30.0-55.0 parts of a fluorine-modified water-based self-crosslinking acrylate emulsion, 0.1-1.5 parts of a neutralizer, 0.5-1.0 part of a silane coupling agent, 0.1-0.2 parts of laurocapram, 0.6-1.0 part of chlorinated paraffin, 4.0-8.0 parts of inorganic sol, 1.5-3.5 parts of metal salt, 0.1-0.3 parts of glycerin, 0.1-0.2 parts of sodium carboxymethylcellulose, 0.1-0.2 parts of polydimethylsiloxane, 1.5-5.5 parts of a cosolvent, 1.0-2.5 parts of aluminium dihydrogen phosphate and 40-50 parts of water; the curing temperature is as low as 40-60 DEG C, and energy consumption is reduced. The fluorine-modified water-based self-crosslinking acrylate emulsion is adopted to enable a film to have weather-resistant, waterproof and self-cleaning performance and the like, the film has a self-repairing function when damaged, and the forming processability is greatly improved. Low VOC (volatile organic compounds) emission is realized, and the problem of chromium passivation pollution is solved.
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Description

technical field

[0001] The invention mainly relates to the field of coatings, in particular to a water-based chrome-free anti-fingerprint coating for galvanized steel sheets. Background technique

[0002] Galvanizing is one of the most widely used metal surface treatment methods, and the zinc layer has excellent processing and use properties. However, the chemical properties of the zinc layer itself are relatively active, and defects such as white rust will appear due to corrosion in a humid environment. Therefore, the galvanized layer needs to be passivated to further improve its use effect. For a long time, chromate passivation has been widely used because of its simple process, excellent corrosion resistance, and low cost. However, the free hexavalent chromium contained in the chromium passivation film is extremely harmful to the environment and the human body, and the RoHS standard has explicitly prohibited the use of chromate passivation treatment.

[0003] With the g...

Claims

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