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Aluminum profile surface treatment process

A technology for surface treatment and aluminum profiles, applied in the direction of metal material coating process, coating, powder coating, etc. spots and other problems, to achieve the effect of improving anti-corrosion performance, preventing air bubbles or falling off, and improving uniformity

Active Publication Date: 2019-06-21
ZHEJIANG CHAOLANG ADVANCED MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the powder coating does not pay attention to the glossiness of the surface of the aluminum profile and the annual performance of the coating and the aluminum profile
[0011] After the existing aluminum profile is processed and formed, the surface of the aluminum profile needs to be treated to make the surface of the aluminum profile appear mirror or matte. However, if the aluminum profile is placed in the air for a long time, it will react with carbon dioxide and oxygen in the air, making it It is dull or has spots. After contact with the human body, it will be contaminated with sweat, oil and dust in the air, which will affect the brightness of the surface of the aluminum profile. The glossiness of aluminum ensures its long-term effectiveness

Method used

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Effect test

Embodiment 1

[0054] Embodiment 1 A kind of surface treatment process of aluminum profiles

[0055] Described technique comprises the following steps:

[0056] (1) Surface pretreatment of aluminum profiles

[0057] The pretreatment is to clean the aluminum profile, remove the dust on the surface, and obtain the pretreated aluminum profile;

[0058] (2) Soaking treatment of aluminum profiles

[0059] The soaking is to put the pretreated aluminum profile in the step (1) into the soaking solution for 10-15 minutes to soak, so as to obtain the soaked aluminum profile;

[0060] The soaking solution is a mixture of sodium bicarbonate solution with a mass fraction of 5% and a sodium hydroxide solution with a mass fraction of 3%, and the volume ratio of the two is sodium bicarbonate solution: potassium hydroxide solution is 1:4;

[0061] (3) Drying treatment of aluminum profiles

[0062] The drying process is to place the soaked aluminum profile in step (2) in a vacuum drying oven, and dry it f...

Embodiment 2

[0071] Embodiment 2 A kind of aluminum profile surface treatment process

[0072] Described technique comprises the following steps:

[0073] (1) Surface pretreatment of aluminum profiles

[0074] The pretreatment is to clean the aluminum profile, remove the dust on the surface, and obtain the pretreated aluminum profile;

[0075] (2) Soaking treatment of aluminum profiles

[0076] The soaking is to put the pretreated aluminum profile in the step (1) into the soaking solution for 15 minutes to soak for 15 minutes to obtain the soaked aluminum profile;

[0077] The soaking solution is a mixture of sodium bicarbonate solution with a mass fraction of 8% and a sodium hydroxide solution with a mass fraction of 5%, and the volume ratio of the two is sodium bicarbonate solution: potassium hydroxide solution is 2:4;

[0078] (3) Drying treatment of aluminum profiles

[0079] The drying process is to place the soaked aluminum profile in step (2) in a vacuum drying oven, and dry it ...

Embodiment 3

[0088] Embodiment 3 A kind of polyurethane wood grain powder coating for aluminum profiles

[0089] The following components are included in parts by weight: 5 parts of allnex 2870-0, 2 parts of allnex 2818-0, 1 part of allnex 2876-0, 5 parts of curing agent, 6 parts of precipitated barium sulfate, and 0.5 parts of leveling agent , 0.5 parts of antioxidant, 0.2 parts of stannous octoate and stannous oxalate with a mass ratio of 1:1, and 5 parts of carbon black.

[0090] The curing temperature of the polyurethane wood grain powder coating for aluminum profiles is 155° C., and the curing time is 14 minutes.

[0091] The polyurethane wood-grain powder coating for aluminum profiles is sprayed by high-voltage static electricity, the high-voltage static electricity is 70KV high-voltage static electricity, and the thickness of the sprayed film is 80 microns.

[0092] The preparation method of the polyurethane wood grain powder coating for aluminum profiles specifically comprises the...

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Abstract

The invention discloses an aluminum profile surface treatment process and relates to the technical field of aluminum profile surface treatment. The surface treatment process comprises the following steps: (1) surface pretreatment of aluminum profiles; (2) soaking of the aluminum profiles; (3) drying of the aluminum profiles; (4) passivation treatment of the aluminum profiles; (5) spraying of the aluminum profiles; (6) curing of the aluminum profiles. A passivation solution used in the passivation treatment step is water-based polyurethane, cerium nitrate, sodium fluoride and sodium dichromatein a weight fraction ratio of 15:3:2:2, and a finishing coat used in the spraying treatment step is a polyurethane wood grain powder coating for the aluminum profiles; the powder coating is sprayed after passivation of the aluminum profiles, shedding of the coating can be effectively prevented, the powder coating and the aluminum profiles have better cohesiveness, corrosion resistance of the aluminum profiles is improved, and the service life of the aluminum profiles is prolonged.

Description

technical field [0001] The invention relates to the technical field of aluminum profile surface treatment, in particular to an aluminum profile surface treatment process. Background technique [0002] With the continuous progress and development of society, people have undergone great changes in material life and spiritual life. People's pursuit of spiritual life is getting higher and higher, especially the requirements for living and living environment are getting higher and higher. The current building and decoration field usually consumes a lot of wood, which leads to the deterioration of the environment on which people live. With the enhancement of global environmental awareness, people also start to pay attention to environmental protection. Therefore, in order to meet the needs of rapid development, some new materials have emerged. [0003] Aluminum profiles are currently widely used materials in construction, decoration, storage and other fields. They are widely acce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/06C09D5/03C09D5/08C09D7/61C08G18/42C23C22/37
Inventor 杨庆伟滕学芳
Owner ZHEJIANG CHAOLANG ADVANCED MATERIALS
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