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Surface treatment process for aluminum profile with acid and alkali resistance

A technology for surface treatment and aluminum profiles, applied to special surfaces, pre-treated surfaces, and devices for coating liquids on surfaces, etc. It can solve the problems of poor acid and alkali resistance, loss of protection, and failure to meet the high performance and diversity of aluminum materials Demand and other issues, to achieve the effect of reducing environmental hazards and good acid and alkali resistance

Pending Publication Date: 2021-02-26
ANHUI XIN FA ALUMINUM PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the widespread use of aluminum and the development of society, ordinary anodizing post-treatment methods have gradually been unable to meet people's needs for high performance and diversity of aluminum, especially aluminum oxide is an amphoteric compound, and its acid and alkali resistance is extremely poor. , can dissolve under acid and alkali conditions and lose its protective effect, so it is necessary to study a surface treatment process for aluminum profiles with acid and alkali resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A surface treatment process for aluminum profiles with acid and alkali resistance, comprising the following steps:

[0022] A Soak the aluminum profile in clean water with a water temperature of 62°C for 8 minutes;

[0023] B Take out the soaked aluminum profile, brush the surface of the aluminum profile with a brush and rinse with water at the same time;

[0024] C Put the aluminum profile in the degreasing agent bath at 42°C, soak for 3.5 minutes, and keep stirring the degreasing agent, and then take out the aluminum profile;

[0025] D Rinse the aluminum profile taken out of the degreasing agent with clean water until the degreasing agent is completely washed away;

[0026] E. Soak the washed aluminum profile in 48°C pickling solution for 3 minutes;

[0027] F put the pickled aluminum profile into the passivation solution for 4 minutes, and keep stirring the passivation solution;

[0028] G wash the passivated aluminum profile and take it out to dry;

[0029] H A...

Embodiment 2

[0036] A surface treatment process for aluminum profiles with acid and alkali resistance, comprising the following steps:

[0037] A Soak the aluminum profile in clean water with a water temperature of 65°C for 5 minutes;

[0038] B Take out the soaked aluminum profile, brush the surface of the aluminum profile with a brush and rinse with water at the same time;

[0039] C Put the aluminum profile into the degreasing agent bath at 45°C, soak for 3 minutes, and keep stirring the degreasing agent, and then take out the aluminum profile;

[0040] D Rinse the aluminum profile taken out of the degreasing agent with clean water until the degreasing agent is completely washed away;

[0041] E. Soak the washed aluminum profile in 55°C pickling solution for 2 minutes;

[0042] F put the pickled aluminum profile into the passivation solution for 5 minutes, and keep stirring the passivation solution;

[0043] G wash the passivated aluminum profile and take it out to dry;

[0044] H A...

Embodiment 3

[0051] A surface treatment process for aluminum profiles with acid and alkali resistance, comprising the following steps:

[0052] A Soak the aluminum profile in clean water with a water temperature of 55°C for 10 minutes;

[0053] B Take out the soaked aluminum profile, brush the surface of the aluminum profile with a brush and rinse with water at the same time;

[0054] C Put the aluminum profile in the degreasing agent bath at 40°C, soak for 5 minutes, and keep stirring the degreasing agent, and then take out the aluminum profile;

[0055] D Rinse the aluminum profile taken out of the degreasing agent with clean water until the degreasing agent is completely washed away;

[0056] E Soak the washed aluminum profile in 40°C pickling solution for 4 minutes;

[0057] F put the pickled aluminum profile into the passivation solution for 2 minutes, and keep stirring the passivation solution;

[0058] G wash the passivated aluminum profile and take it out to dry;

[0059] H Aft...

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Abstract

The invention discloses a surface treatment process for an aluminum profile with acid and alkali resistance. The process comprises the steps of clean water soaking, brushing, degreasing agent cleaning, acid liquor soaking, passivation, electrostatic spraying and the like; a degreasing agent tank solution is composed of the following components of sodium carbonate, sodium citrate, triethanolamine,a surfactant and water; a passivation solution is composed of the following components of cerous nitrate, acetic acid, sodium molybdate, hydrochloric acid, potassium phytate, a surfactant and water; and an acid and alkali resistant coating is composed of the following components of zirconium nitride powder, melamine copolymer resin, polyamide, a silane coupling agent, nano titanium dioxide and polypropylene resin. According to the process, the degreasing agent tank solution, the passivation solution and the acid and alkali resistant coating do not contain phosphorus, halogen, heavy metal chromium and other components which have a great influence on the environment, so that the harm to the environment is effectively reduced; and meanwhile, the aluminum profile treated through the process isextremely good in acid and alkali resistance.

Description

technical field [0001] The invention relates to the technical field of aluminum profile treatment technology, in particular to an aluminum profile surface treatment process with acid and alkali resistance. Background technique [0002] Aluminum and aluminum alloys are used more and more widely in many fields such as automobiles, mobile phones, aerospace, building materials, etc. At present, the industry widely adopts anodic oxidation to improve the performance of aluminum materials. The pore structure must be further sealed to ensure the quality of the aluminum material. However, with the widespread use of aluminum and the development of society, ordinary anodizing post-treatment methods have gradually been unable to meet people's needs for high performance and diversity of aluminum, especially aluminum oxide is an amphoteric compound, and its acid and alkali resistance is extremely poor. , can dissolve under acid and alkali conditions and lose its protective effect, so it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D7/24B05D5/00B05D3/00B05D3/10C09D123/12C09D177/00C09D161/28C09D5/08C09D7/61
CPCB05D7/14B05D7/24B05D5/00B05D3/002B05D3/102C09D123/12C09D5/08C09D7/61C08K2003/2241C08L2205/03B05D2505/00B05D2502/00B05D2202/25
Inventor 赵欣泰唐开健李杰王超傅凡一贡玉楼
Owner ANHUI XIN FA ALUMINUM PROD