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Phosphate-free forming agent based on hexafluorozirconic acid, preparation method and application method

A technology without phosphating agent and fluorozirconic acid, applied in the direction of metal material coating process, etc., can solve the problems of phosphorus pollution and heavy metal pollution, and achieve the effect of saving energy, less slag, and reducing costs

Inactive Publication Date: 2019-12-03
NIPPON PAINT CHONGQING CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the chromic acid passivation method has serious chromium pollution, this method has been restricted in use; and the phosphating method has serious phosphorus pollution and other heavy metal pollution, which is also an obsolete technology

Method used

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  • Phosphate-free forming agent based on hexafluorozirconic acid, preparation method and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: A non-phosphating agent based on fluozirconic acid, using water as a solvent, fluozirconic acid as a film-forming agent, and adding zinc oxide, manganese nitrate, nitric acid, hydrofluoric acid, tartaric acid, citric acid, sulfuric acid Hydroxylamine, EDTA, triethanolamine, benzotriazole and hexamethylenetetramine; its percentage by weight is: 0.1% of fluozirconic acid, 0.1% of zinc oxide, 0.1% of manganese nitrate, 1% of nitric acid, 1% of hydrofluoric acid , 1% tartaric acid, 0.5% citric acid, 0.5% hydroxylamine sulfate, 0.5% EDTA, 0.1% triethanolamine, 0.1% benzotriazole, 0.1% by weight of hexamethylenetetramine, and the balance is pure water.

Embodiment 2

[0031] Example 2: A non-phosphating agent based on fluozirconic acid, using water as a solvent, fluozirconic acid as a film-forming agent, and adding zinc oxide, manganese nitrate, nitric acid, hydrofluoric acid, tartaric acid, citric acid, sulfuric acid Hydroxylamine, disodium EDTA, triethanolamine, benzotriazole and hexamethylenetetramine; its percentage by weight is: 10% of fluozirconic acid, 3% of zinc oxide, 3% of manganese nitrate, 5% of nitric acid, hydrofluoric acid 3%, tartaric acid 3%, citric acid 3%, hydroxylamine sulfate 2%, EDTA disodium 2%, triethanolamine 0.15%, benzotriazole 0.15%, hexamethylenetetramine 0.15% by weight, the balance for pure water.

Embodiment 3

[0032] Example 3: A non-phosphorus forming agent based on fluozirconic acid, using water as a solvent, fluozirconic acid as a film-forming agent, and adding zinc oxide, manganese nitrate, nitric acid, hydrofluoric acid, tartaric acid, citric acid, sulfuric acid Hydroxylamine, tetrasodium EDTA, triethanolamine, benzotriazole and hexamethylenetetramine; its percentage by weight is: 15% of fluozirconic acid, 5% of zinc oxide, 5% of manganese nitrate, 10% of nitric acid, hydrofluoric acid 5%, tartaric acid 5%, citric acid 5%, hydroxylamine sulfate 3%, EDTA tetrasodium 3%, triethanolamine 2%, benzotriazole 2%, hexamethylenetetramine 2% by weight, the balance for pure water.

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PUM

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Abstract

The invention relates to the technical field of formation agents, and discloses a phosphating-free forming agent based on hexafluorozirconic acid. The phosphating-free forming agent takes the water asthe solvent and the fluozirconic acid as a film-forming agent, is added with a first corrosion-resistant agent, a second corrosion-resistant agent, an acidity regulator, an accelerant, a complexing agent, an antirust agent and a corrosion inhibitor, specifically comprises the components in percentage by weight of 0.1-15% of hexafluorozirconic acid, 0.1-5% of the first corrosion inhibitor, 0.1-5%of the second corrosion inhibitor, 3-20% of the acidity regulator, 1-8% of the accelerant, 0.5-3% of the complexing agent, 0.1-2% of the antirust agent, 0.2-4% of the corrosion inhibitor and the balance of water. The invention further discloses a preparation method and an application method of the non-phosphatization forming agent based on hexafluorozirconic acid. The non-phosphorization forming agent based on hexafluorozirconic acid, the preparation method and the application method have the advantages of being environment friendly, being capable of saving energy, and being low in emission and simple in technological process.

Description

technical field [0001] The invention relates to the technical field of chemical forming agents, in particular to a phosphorous-free chemical forming agent based on fluozirconic acid, a preparation method and an application method. Background technique [0002] Metal materials are damaged by the action of the surrounding medium, which is called metal corrosion. When metal corrodes, a chemical or electrochemical multiphase reaction occurs between the metal and air, water, etc. on the metal interface, causing the metal to enter an oxidized (ion) state, which will significantly reduce the mechanical properties of the metal material such as strength, plasticity, and toughness. , Destroy the geometric shape of metal components, increase the wear between parts, deteriorate the physical properties such as electrical and optical, and shorten the service life of the equipment. Application of coating protection on metal surfaces is the most common and important method of preventing me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/34C23C22/73
CPCC23C22/34C23C22/73
Inventor 殷学科杨德理刘启明顾雷亮王国军
Owner NIPPON PAINT CHONGQING CHEM CO LTD