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Novel environment-friendly passivating solution

A passivation solution, an environmentally friendly technology, applied in the coating process of metal materials, etc., can solve the problems of short life of the purification membrane, can not resist the corrosion of seawater and sulfur dioxide, cannot resist the erosion of high color and high humidity, and achieve the purpose of increasing adhesion Effect

Inactive Publication Date: 2016-12-21
江苏江电电力设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the domestic use of Cr 3 or Cr 6 There is a chromium purification solution, but this purification solution cannot resist the corrosion of high-colored powder and high humidity during sea transportation, and the life of the formed purification film is short, and it cannot resist the corrosion of seawater and sulfur dioxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The invention relates to a novel environment-friendly passivation solution: the raw material composition of the passivation solution is composed of the following: water-based acrylic resin 450-550g / l; sodium dihydrogen phosphate 4-6g / l; sodium molybdate 4-6g / l; Zinc 0.5-1.5g / l; clean water 470-500g / l; amine water 0.8-1.1g / l.

[0012] Adjust the temperature of the passivation solution to 20-40°C. After the immersion film is dry, a passivation film will be formed. After that, it will not be afraid of water erosion, so that the passivation film will be cured for 10 minutes, which can prolong the life of the passivation film to 4- 6 months, it can effectively resist the erosion of high salinity and high humidity during sea transportation, as well as the corrosion of seawater and sulfur dioxide. Among them, sodium molybdate can increase the adhesion of the passivation film. Since it accounts for a small proportion in the formula of the passivation solution, it is non-toxic a...

Embodiment 2

[0014] Further, the raw material composition of this passivation solution is composed of the following: water-based acrylic resin 450g / l; sodium dihydrogen phosphate 4g / l; sodium molybdate 4g / l; zinc chloride 0.5g / l; purified water 470g / l; Amine water 0.8g / l.

[0015] Adjust the temperature of the passivation solution to 20°C. After the immersion film is dry, a passivation film will be formed. After that, it will not be afraid of water erosion, so that the passivation film will be cured for 10 minutes, which can extend the life of the passivation film to 4 months. It can effectively resist the erosion of high salinity and high humidity during sea transportation, as well as the corrosion of seawater and sulfur dioxide. Among them, sodium molybdate can increase the adhesion of the passivation film. Since it accounts for a small proportion in the formula of the passivation solution, it is non-toxic and has no residue; and amine water can adjust the pH of the passivation solution....

Embodiment 3

[0017] Further, the raw material composition of this passivation solution is composed of the following: water-based acrylic resin 500g / l; sodium dihydrogen phosphate 5g / l; sodium molybdate 5g / l; zinc chloride 1g / l; purified water 489g / l; Water 0.8g / l.

[0018] Adjust the temperature of the passivation solution to 25°C. After the immersion film is dry, a passivation film will be formed. After that, it will not be afraid of water erosion, so that the passivation film will be cured for 10 minutes, which can extend the life of the passivation film to 5 months. It can effectively resist the erosion of high salinity and high humidity during sea transportation, as well as the corrosion of seawater and sulfur dioxide. Among them, sodium molybdate can increase the adhesion of the passivation film. Since it accounts for a small proportion in the formula of the passivation solution, it is non-toxic and has no residue; and amine water can adjust the pH of the passivation solution.

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Abstract

The invention provides a novel environment-friendly passivating solution. The passivating solution is composed of the following raw material components: 450-550g / L of water-soluble acrylic resin, 4-6g / L of sodium dihydrogen phosphate, 4-6g / L of sodium molybdate, 0.5-1.5g / L of zinc chloride, 470-500g / L of purified water and 0.8-1.1g / L of ammonia water. The novel environment-friendly passivating solution has the advantages that the sodium molybdate can increase the adhesive force of a passivated film; as the ratio of the sodium molybdate in the formula of the passivating solution is small, no toxins or residues are produced; and the PH value of the passivating solution can be regulated through the amine water solution.

Description

technical field [0001] The invention relates to a hot-dip alloy in the metal product industry, in particular to a novel environment-friendly passivation solution. Background technique [0002] At present, most of the domestic use of Cr 3 or Cr 6 There is a chromium purification solution, but this purification solution cannot resist the corrosion of high-colored powder and high humidity during sea transportation, and the life of the formed purification film is short, and it cannot resist the corrosion of seawater and sulfur dioxide. Therefore, a new technical solution should be provided to solve the above problems. Contents of the invention [0003] The purpose of the invention is to provide a novel environment-friendly passivation solution. [0004] In order to achieve the above object, the technical solution adopted in the present invention is: novel environment-friendly passivation solution: the raw material composition of this passivation solution is made up of follo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/60
CPCC23C22/60
Inventor 曾祥春
Owner 江苏江电电力设备有限公司