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Surface anti-corrosion sol for aeronautic aluminum alloy material and treatment method thereof

An aluminum alloy material and anti-corrosion treatment technology, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of increasing process difficulty, production cost, and increasing operation steps, and achieve the effects of low cost, high utilization rate, and simple method

Inactive Publication Date: 2011-09-07
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method requires two coatings and two dryings, which increases the operation steps, increases the difficulty of the process and the production cost

Method used

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  • Surface anti-corrosion sol for aeronautic aluminum alloy material and treatment method thereof
  • Surface anti-corrosion sol for aeronautic aluminum alloy material and treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Preparation of Sol-Gel Solution

[0028] 30 ml of organosiloxane, 750 ml of organic solvent, 1 wt% of additives, 0.5 wt% of rare earth salt, 1 wt% of catalyst and appropriate amount of deionized water were mixed and stirred in a total of 1000 ml, and the stirring time was 5 minutes to 1 hour;

[0029] In order to speed up the hydrolysis rate, it can also be heated to 40 to 60°C;

[0030] If it is prepared at room temperature (18°C to 25°C), after stirring evenly, it needs to stand still for 48 hours to 60 hours for aging; filter the sol solution with slow quantitative filter paper in the laboratory, transfer it to a clean container and store it in an airtight condition until use.

[0031] 2. The sol is applied to the base material (the following description takes the implementation on the aluminum alloy 2024 sample as an example)

[0032] 2.1 Surface cleaning and activation of matrix materials:

[0033] Clean the surface of the sample with tap water and detergent;...

Embodiment 2

[0039] 1. Preparation of Sol-Gel Solution

[0040] 60 ml of organosiloxane, 850 ml of organic solvent, 1 wt% of additives, 1 wt% of rare earth salt, 0.5 wt% of catalyst, and an appropriate amount of deionized water are mixed and stirred in a total of 1000 ml, and the stirring time is 5 minutes to 1 hour;

[0041] When preparing at room temperature (18°C to 25°C), after stirring evenly, it needs to stand still for 48 hours to 60 hours for aging; filter the sol solution with slow quantitative filter paper in the laboratory, transfer it into a clean container and store it in a sealed container until use.

[0042] 2. The sol is applied to the base material (the following description takes the implementation on the aluminum alloy 2024 sample as an example)

[0043] 2.1 Surface cleaning and activation of matrix materials:

[0044] Wash the surface of the sample with tap water and detergent; soak the sample with alkaline detergent at room temperature for 10 minutes to remove the gr...

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PUM

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Abstract

The invention discloses surface anti-corrosion sol for an aeronautic aluminum alloy material and a treatment method thereof in the technical field of aluminum alloy surface treatment. The sol comprises the following components in percentage by weight: 1-15 percent of organosiloxane, 45-93 percent of organic solvent, 0.1-10 percent of additive, 0.5-10 percent of rare earth salt, 5-50 percent of deionized water and 0.1-5 percent of catalyst. In the invention, a coating with a compact netlike crosslinking structure is formed on the surface of an aluminum alloy matrix and has high chemical stability and thermal stability, so that influence of an external acidic and alkaline environment and temperature variation on the coating can be resisted; and the coating has higher mechanical strength, rain washing resistance, friction resistance and scratch resistance. The technical method is simple, is easy and convenient to operate, does not have high requirement on equipment and is environmentally-friendly and pollution-free.

Description

technical field [0001] The invention relates to a coating in the technical field of aluminum alloy surface treatment and an implementation method thereof, in particular to a surface anticorrosion sol for aviation aluminum alloy materials and a treatment method thereof. Background technique [0002] Traditional aluminum alloy surface treatment technologies include anodic oxidation, chemical oxidation, electroplating and micro-arc oxidation. Among them, the chemical oxidation film prepared by the chemical oxidation method has the advantages of little influence on the fatigue performance of aluminum alloy materials, simple process, low cost, fast formation speed, good adhesion, etc., and is often used as a pretreatment method for aluminum alloy spraying primers and coatings. At present, the representative treatment method of chemical oxidation method is chromate chemical oxidation method. After the aluminum alloy is treated with chromate, a layer of highly adhesive thin layer d...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D5/08C09D7/12
Inventor 苏跃增刘萍朱瑞鑫宋袁增吴松林
Owner SHANGHAI JIAO TONG UNIV
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