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Environmentally friendly method of imitating gold on galvanized decorative panels

A decorative board and environmentally friendly technology, applied in the coating process of metal materials, etc., can solve the problems of toxic waste liquid that cannot be treated, high cost, and large pollution

Active Publication Date: 2018-05-08
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used imitation gold plating is currently mostly based on brass plating solution, which is a binary alloy or a ternary alloy, and the cyanide process is mostly used. This process is not only unstable, but also costly and polluting. The toxic waste liquid obtained cannot be deal with

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] The specific preparation steps of this embodiment are as follows:

[0010] a. Use Q235 material as the substrate for bright galvanizing, so that the thickness of the galvanized layer is above 8um, and use 3% nitric acid at room temperature to emit light for 4s;

[0011] b. Using sodium molybdate, sodium citrate, sodium phosphate, tannin, hydroxyethylidene diphosphonic acid and cobalt nitrate to prepare a chromium-free color passivator for galvanizing;

[0012] c. Passivate the galvanized decorative plate in a chromium-free color passivation solution for 30s to present a golden yellow effect;

[0013] d. Quickly immerse the passivated galvanized decorative panel into the sealant, and soak for 5 seconds under the condition of pH 6.5;

[0014] e. Quickly immerse the galvanized decorative panel directly in the immersion solution with a ratio of 1 volume of water-soluble varnish and 10 volumes of clear water for 1 minute;

[0015] f. Dry it at 60°C for 5 minutes or put it...

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PUM

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Abstract

The invention relates to a non-poisonous gold imitating method applied to a galvanized decorative board. Through technological processes of galvanizing, bright dipping, passivating, sealing, paint immersion, drying and the like on a Q235 material, the corrosion resistance of the galvanized decorative board can be obviously improved, decoration is non-poisonous and environment-friendly, and the bright gold imitating color is achieved.

Description

technical field [0001] The invention relates to an environmentally friendly and non-toxic imitation gold method applied to galvanized decorative boards, in particular to a chromium-free imitation gold composition and a method for galvanized decorative boards. Background technique [0002] According to GB-2008 "Electroplating Pollutant Discharge Standard", for Pd, Hg, Cd, Cr 6+ , polybrominated diphenyl ether and polybrominated biphenyls, etc., the emission standards of six first-class pollutants have been strictly restricted. and appearance have been greatly improved. Commonly used imitation gold plating is currently mostly based on brass plating solution, which is a binary alloy or a ternary alloy, and the cyanide process is mostly used. This process is not only unstable, but also costly and polluting. The toxic waste liquid obtained cannot be deal with. The imitation gold system of galvanized sheet includes sodium molybdate, sodium citrate, sodium phosphate, tannin, hyd...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/42
CPCC23C22/42
Inventor 石磊石佳正刘科高
Owner SHANDONG JIANZHU UNIV