Nickel-free fluoride-free low-temperature sealing agent for aluminum alloy anodic oxide film

An anodic oxide film and sealant technology, applied in the field of metal gold surface treatment, can solve the problems of not meeting the national environmental protection requirements, harming human organs, endangering human health, etc., achieving good brightness, preventing or slowing down the corrosion of materials and equipment, Not easy to decompose effect

Inactive Publication Date: 2016-12-21
JIANGSU FEITUO INTERFACE ENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The blocking solutions of the above patents all contain Ni 2+ or F - , Ni 2+ Can cause serious environmental pollution, endanger human health, damage human organs, and F - It will damage the respiratory system, cause acute fluorosis, and pollute the environment. More fluoride makes subsequent sewage treatment difficult, and does not meet the national environmental protection requirements

Method used

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  • Nickel-free fluoride-free low-temperature sealing agent for aluminum alloy anodic oxide film
  • Nickel-free fluoride-free low-temperature sealing agent for aluminum alloy anodic oxide film
  • Nickel-free fluoride-free low-temperature sealing agent for aluminum alloy anodic oxide film

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In this embodiment, nickel-free and fluorine-free low-temperature sealing agent for aluminum alloy anodized film, the raw materials of the sealing agent are calculated as: metal salt, 8g; stabilizer, 3g; corrosion inhibitor, 2.5g; oxidizing agent, 1g; surfactant , 4g; pH buffer, 16g; deionized water, the amount added is the amount that the rest of the raw materials are mixed and then added with deionized water to dilute to 1L.

[0033] Metal salt comprises 5g titanium acetate and 3g yttrium chloride in the present embodiment, and stabilizing agent is carboxylate derivative, and molecular structural formula is:

[0034]

[0035] Among them, R 1 is a hydrogen atom, R 2 is the amino group, R 3 is the amino group, R 4 is a methyl group; the corrosion inhibitor is an organic carboxylic acid, and its molecular structure is:

[0036]

[0037] Among them, R 5 is a hydrogen atom, R 6 is a methyl group; the surfactant is an AB type block polymer surfactant, and the mo...

Embodiment 2

[0041] Compared with the nickel-free and fluorine-free low-temperature sealing agent for aluminum alloy anodized film in this embodiment, the components are unchanged, and only the proportion of the components is changed.

[0042] The raw materials of the sealing agent in this embodiment are calculated by 1L: metal salt, 16g; stabilizer, 0.5g; corrosion inhibitor, 0.8g; oxidizing agent, 0.3g; surfactant, 0.2g; Ionized water, the amount to add is the amount that the rest of the raw materials are mixed and then added with deionized water to make the volume to 1L.

[0043] Metal salt comprises 10g titanium acetate and 8g yttrium chloride in the present embodiment, and stabilizing agent is carboxylate derivative, and molecular structural formula is:

[0044]

[0045] Among them, R 1 is a hydrogen atom, R 2 is the amino group, R 3 is the amino group, R 4 is a methyl group; the corrosion inhibitor is an organic carboxylic acid, and its molecular structure is:

[0046]

[00...

Embodiment 3

[0051] Compared with the nickel-free and fluorine-free low-temperature sealing agent for aluminum alloy anodized film in this embodiment, the components are unchanged, and only the proportion of the components is changed.

[0052] The raw materials of the sealing agent in this embodiment are calculated by 1L: metal salt, 12g; stabilizer, 1.75g; corrosion inhibitor, 1.65g; oxidizing agent, 0.65g; surfactant, 3.1g; Ionized water, the amount to add is the amount that the rest of the raw materials are mixed and then added with deionized water to make the volume to 1L.

[0053] Metal salt comprises 8g titanium acetate and 4g yttrium chloride in the present embodiment, and stabilizing agent is carboxylate derivative, and molecular structural formula is:

[0054]

[0055] Among them, R 1 is a hydrogen atom, R 2 is the amino group, R 3 is the amino group, R 4 is a methyl group; the corrosion inhibitor is an organic carboxylic acid, and its molecular structure is:

[0056]

...

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Abstract

The invention relates to a nickel-free fluoride-free low-temperature sealing agent for an aluminum alloy anodic oxide film. The raw materials of the sealing agent comprise, based on 1 L, 8-16 g of metal salt, 0.5-3 g of a stabilizer, 0.8-2.5 g of a corrosion inhibitor, 0.3-1 g of an oxidant, 0.2-4 g of a surfactant, 3.5-16 g of a pH buffering agent and deionized water, and the adding amount of the deionized water is the amount that after the other raw materials are mixed, the deionized water is added till the constant volume of the sealing agent is 1 L. The nickel-free fluoride-free low-temperature sealing agent for the aluminum alloy anodic oxide film has the advantages that a rapid penetration function is achieved, micropores can be fully sealed, and the corrosion resistance of the metal surface is effectively improved; the physical and chemical stability performances of the sealing agent are good, the additives are not prone to being decomposed and can be used for a long term, and the production cost is reduced; and the brightness of the workpiece surface is good after micropore sealing, and the abrasion resistance and the hardness are greatly improved, so that the problems that part of micropores are not sealed due to the poor micropore sealing effect, powder frost exists on the workpiece surface after micropore sealing, and the corrosion resistance of the oxide film is poor after micropore sealing are effectively solved.

Description

technical field [0001] The invention relates to the technical field of metal gold surface treatment, in particular to a nickel-free and fluorine-free low-temperature sealing agent for aluminum alloy anodized film. Background technique [0002] Aluminum and aluminum alloys form an oxide film after anodic oxidation, and regular micropores are distributed on the surface, with a porosity of about 5%-30%. These pores provide a channel for some dirt in the environment to enter the membrane body, and the hardness, wear resistance and corrosion resistance of the newly oxidized membrane layer are poor. Therefore, oxide film sealing is an essential process in the aluminum product industry. At present, there are many methods of sealing treatment, mainly including: water and sealing method, hydrolysis salt sealing method, organic acid sealing method and nickel-fluorine system low temperature sealing method, etc. The sealing temperature in the water and sealing method is high, consumes...

Claims

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Application Information

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IPC IPC(8): C25D11/18
CPCC25D11/18
Inventor 郑建曹智娟周汉涛陈春雷
Owner JIANGSU FEITUO INTERFACE ENG TECH CO LTD
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