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Chromium-free washing-free vanadium-zirconium coating agent, aluminum material and surface coating treatment method of aluminum material

A coating agent, vanadium-zirconium technology, applied in the coating process of metal materials, etc., can solve problems such as not being able to meet environmental protection requirements, and achieve good corrosion resistance

Inactive Publication Date: 2021-04-30
SHENZHEN CHANGHONGTAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional film generally needs to be cleaned with water after film treatment, or contains chromium ions, which cannot meet the environmental protection needs and the process requirements of some merchants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Mix the ingredients according to the following parts by weight: based on 1000 parts by weight, 5 parts of silicone resin, 2 parts of fluozirconic acid, 2 parts of ammonium metavanadate, 2 parts of citric acid and the rest of water, stir, mix evenly, and prepare film-forming agent.

[0019] Treatment method: prepare a chrome-free no-clean vanadium-zirconium coating agent; prepare a chromium-free no-clean vanadium-zirconium coating agent into a coating solution with a mass percentage of 3%; control the pH value of the coating solution to 2-3; Next, soak the aluminum material in the solution for 1 minute, take it out, put it under the fan to drain, and then dry it at 120 degrees.

[0020] After the above film agent solution treatment, it was found that the corrosion resistance of the workpiece was greatly improved, and the neutral salt spray test reached above 48. After the paint was painted, it was boiled in water for 2 hours, and then the 100-grid test was performed. The...

Embodiment 2

[0022] Mix the ingredients according to the following parts by weight: based on 1000 parts by weight, 20 parts of silicone resin, 5 parts of fluozirconic acid, 4 parts of ammonium metavanadate, 4 parts of citric acid and the rest of water, stir, mix evenly, and prepare film-forming agent.

[0023] Treatment method: prepare a chrome-free no-clean vanadium-zirconium coating agent; prepare a chromium-free no-clean vanadium-zirconium coating agent into a coating solution with a mass percentage of 2%; control the pH value of the coating solution to 2-3; Next, soak the aluminum material in the solution for 1 minute, take it out, put it under the fan to drain, and then dry it at 120 degrees.

[0024] After being treated with the above film agent solution, it was found that the corrosion resistance of the workpiece was greatly improved. The neutral salt spray test lasted for more than 48 hours. class.

Embodiment 3

[0026] Mix the components according to the following parts by weight: based on 1000 parts by weight, 35 parts of silicone resin, 5 parts of fluozirconic acid, 6 parts of ammonium metavanadate, 6 parts of citric acid and the rest of water, stir, mix evenly, and prepare film-forming agent.

[0027] Treatment method: Prepare a chrome-free no-clean vanadium-zirconium film agent; prepare a chromium-free no-clean vanadium-zirconium film agent into a film solution with a mass percentage of 1.5%; control the pH value of the film agent solution to 3; at room temperature, Soak the aluminum material in the solution for 1 minute, take it out, put it under the fan to drain, and then dry it at 120 degrees.

[0028] After being treated with the above film agent solution, it was found that the corrosion resistance of the workpiece was greatly improved. The neutral salt spray test lasted for more than 48 hours. class.

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PUM

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Abstract

The invention relates to a chromium-free washing-free vanadium-zirconium coating agent, an aluminum material and a surface coating treatment method of the aluminum material. The chromium-free washing-free vanadium-zirconium coating agent is used for surface pretreatment of the aluminum material and comprises following components in 1000 parts by weight: 5-50 parts of organic silicon resin, 2-20 parts of hexafluorozirconic acid, 2-10 parts of ammonium metavanadate, 2-10 parts of citric acid and the balance water. A film layer formed by the chromium-free washing-free vanadium-zirconium coating agent has good corrosion resistance and adhesive force, and is particularly suitable for being used as a bottom layer for coating treatment. When the aluminum material is treated, the coating agent can be used in a soaking and spraying mode, washing is not needed, water is saved, use is very convenient, and the coating agent does not contain chromium ions or other heavy metals which damage the environment and is a green, energy-saving and environment-friendly product.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a chrome-free no-clean vanadium-zirconium coating agent, an aluminum material and a surface coating treatment method thereof. Background technique [0002] In order to improve the surface performance or appearance of the product, the surface treatment technology of the workpiece is usually used. For example, the surface treatment process of aluminum, iron and their alloys has penetrated into all walks of life. Moreover, most of the work requires pretreatment before surface treatment, for example, cleaning, decontamination and degreasing, and aluminum for some purposes also needs to be treated with a film. [0003] Film treatment generally uses a film agent to pretreat the aluminum to form a film on the surface of the aluminum for subsequent surface treatment and increase the bonding force and anti-corrosion of the subsequent film. The traditional film generally ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/44C23C22/73C23C22/76
CPCC23C22/44C23C22/73C23C22/76
Inventor 方招娣
Owner SHENZHEN CHANGHONGTAI TECH CO LTD