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Novel aluminum and high-molecular aluminum alloy chromium-free film forming agent

An aluminum alloy and polymer technology, which is applied in the field of new aluminum and aluminum alloy polymer chromium-free film formers, can solve the problems of difficulty in meeting the requirements of architectural aluminum profiles, complicated processing technology, and long processing time, and achieve excellent film forming effects. , low price, short processing time

Inactive Publication Date: 2015-05-27
CHANGZHOU JUNHE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical conversion coating is very thin (≤100mg / m2), and it is difficult to meet the requirements of architectural aluminum profiles. Although the rare earth chemical conversion coating has good corrosion resistance, it has long processing time, high processing temperature, complicated processing technology and difficult production. Disadvantages such as high cost, there is a certain distance from industrial production

Method used

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  • Novel aluminum and high-molecular aluminum alloy chromium-free film forming agent
  • Novel aluminum and high-molecular aluminum alloy chromium-free film forming agent
  • Novel aluminum and high-molecular aluminum alloy chromium-free film forming agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A new type of aluminum and aluminum alloy polymer chromium-free film-forming agent, which takes the following weight composition and components:

[0028]

[0029] Add 800 ml of water, stir well to dissolve and mix evenly, add appropriate amount of water and mix evenly to prepare 1 liter of film-forming agent.

[0030] Dilute the above-mentioned film-forming agent with water, prepare it with a volume ratio of film-forming agent to water of 1:20, and adjust the pH to 2-4 with triethanolamine.

[0031] When using the film-forming agent described in this embodiment, first clean the aluminum workpiece with an acidic or neutral cleaning agent to remove oil and dust on the surface of the aluminum, then clean other substances remaining on the surface of the aluminum with water, and then use this The film-forming agent described in the embodiment is treated at room temperature for 2 to 5 minutes to form a conversion film on the surface of the aluminum material, and finally th...

Embodiment 2

[0034] A new type of aluminum and aluminum alloy polymer chromium-free film-forming agent, which takes the following weight composition and components:

[0035]

[0036] Add 800 ml of water, stir well to dissolve and mix evenly, add appropriate amount of water and mix evenly to prepare 1 liter of film-forming agent.

[0037] Dilute the above-mentioned film-forming agent with water, prepare the film-forming agent to water volume ratio of 1:10, and adjust the pH to 2-4 with sodium carbonate.

[0038] When using the film-forming agent described in this embodiment, first clean the aluminum workpiece with an acidic or neutral cleaning agent to remove oil and dust on the surface of the aluminum, then clean other substances remaining on the surface of the aluminum with water, and then use this The film-forming agent described in the embodiment is treated at room temperature for 2 to 5 minutes to form a conversion film on the surface of the aluminum material, and finally the surfac...

Embodiment 3

[0040] A new type of aluminum and aluminum alloy polymer chromium-free film-forming agent, which takes the following weight composition and components:

[0041]

[0042]

[0043] Add 800 ml of water, stir well to dissolve and mix evenly, add appropriate amount of water and mix evenly to prepare 1 liter of film-forming agent.

[0044] Dilute the above-mentioned film-forming agent with water, prepare the film-forming agent to water volume ratio of 1:15, and adjust the pH to 2-4 with acetic acid or nitric acid.

[0045] When using the film-forming agent described in this embodiment, first clean the aluminum workpiece with an acidic or neutral cleaning agent to remove oil and dust on the surface of the aluminum, then clean other substances remaining on the surface of the aluminum with water, and then use this The film-forming agent described in the embodiment is treated at room temperature for 2 to 5 minutes to form a conversion film on the surface of the aluminum material, ...

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Abstract

The invention discloses novel aluminum and a high-molecular aluminum alloy chromium-free film forming agent. 1L of the high-molecular aluminum alloy chromium-free film forming agent is characterized by comprising the following components by weight: 20g to 100g of modified water-based high-molecular resin, 3g to 20g of an oxidant, 5g to 40g of a film forming aid, 0.5g to 5g of a wetting agent, 1g to 10g of a complexing agent and the balance of water. The novel aluminum and the high-molecular aluminum alloy chromium-free film forming agent disclosed by the invention are nontoxic, need no complex preparation process and have the advantages of greatly improving the production efficiency, being short in treatment time, realizing an excellent film formation effect at room temperature, greatly improving the corrosion resistance of the material, causing no precipitate slags, saving energy and protecting environment.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a novel aluminum and aluminum alloy polymer chromium-free film-forming agent. Background technique [0002] Aluminum is one of the most abundant metal elements in nature. Because aluminum and its alloys have the advantages of small specific gravity, good thermal and electrical conductivity, strong light reflection, easy forming and processing, excellent physical and chemical properties, and low price, they are currently widely used. Used in electronic communication, home appliances, construction, automobile, plumbing and other fields. However, aluminum alloys are prone to damage in the form of pitting corrosion, crevice corrosion, stress corrosion and corrosion fatigue when used in humid, alkaline media such as industrial gases and fuel gases, and salt water. [0003] Hexavalent chromate passivation technology is a chemical conversion surface treatment technology...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/34C23C22/56
CPCC23C22/34C23C22/56
Inventor 梁会文陆由东朱文琪
Owner CHANGZHOU JUNHE TECH
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