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Fluorocarbon roller coating process of aluminum veneer for curtain wall

An aluminum veneer, fluorocarbon technology, applied in the coating, the device for coating liquid on the surface, the pretreatment surface, etc., can solve the problems of large paint consumption and uneven coating thickness, and achieve uniform and fine coating thickness. , good corrosion resistance, the effect of improving corrosion resistance

Inactive Publication Date: 2021-01-15
江苏美诺斯建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional spraying process consumes a lot of paint, and the utilization rate is only about 50%, and the thickness of the coating is uneven. The entire coating film and surface are formed by the accumulation of particles and micropores

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] S1, surface cleaning: first immerse the surface of the aluminum veneer in 8% sodium bicarbonate solution at 46°C for 2 minutes to degrease once, then clean it by spraying clean water, and then immerse it in 8% sodium bicarbonate solution at 46°C for 1 minute after draining Degreasing once, after cleaning with clean water, ultrasonic cleaning and drying.

[0024] S2, polishing passivation: Soak the aluminum veneer treated in S1 in the stock solution of aluminum polishing agent at 90°C for 2 minutes at room temperature, stir slightly during immersion, and quickly put the aluminum veneer in clean water after polishing Clean it, then soak it in the deashing passivation agent and rinse it for 25 seconds, then take out the aluminum veneer and soak it in pure water for 3 minutes, then wash it clean. The pure water does not contain chloride ions, so as to prevent the residual chloride ions in other water from corroding and oxidizing the aluminum veneer , and then dry the alumin...

Embodiment 2

[0028] S1, surface cleaning: firstly immerse the surface of the aluminum veneer in 9% sodium carbonate aqueous solution at 50°C for 1 minute for degreasing, and then clean it by spraying clean water, after draining, immerse it in 9% sodium carbonate aqueous solution at 50°C for 1 minute for degreasing , after the completion of the clean water ultrasonic cleaning and drying.

[0029] S2, polishing passivation: Soak the aluminum veneer treated in S1 in the stock solution of aluminum polishing agent at 92°C for 1 min at room temperature, stirring slightly during immersion, and quickly place the aluminum veneer in clean water after polishing Clean it, then soak it in the deashing passivator and rinse it for 30 seconds, then take out the aluminum veneer and soak it in pure water for 3 minutes and then wash it clean. The pure water does not contain chloride ions, so as to prevent the residual chloride ions in other water from corroding and oxidizing the aluminum veneer , and then dr...

Embodiment 3

[0033] S1, surface cleaning: first immerse the surface of the aluminum veneer in 11% sodium phosphate dodecahydrate at 45°C for 3 minutes for degreasing, and then clean it by spraying clean water, and then immerse it in 11% sodium phosphate dodecahydrate at 45°C after draining Degrease once every 3 minutes, and then dry it with clean water and ultrasonic cleaning.

[0034] S2, polishing passivation: Soak the aluminum veneer treated in S1 in the stock solution of aluminum polishing agent at 80°C for 3 minutes at room temperature, and stir slightly during immersion, and quickly put the aluminum veneer in clean water after polishing Clean it, then soak it in the deashing passivation agent and rinse it for 25 seconds, then take out the aluminum veneer and soak it in pure water for 3 minutes, then wash it clean. The pure water does not contain chloride ions, so as to prevent the residual chloride ions in other water from corroding and oxidizing the aluminum veneer , and then dry th...

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Abstract

The invention discloses a fluorocarbon roller coating process of an aluminum veneer for a curtain wall. The fluorocarbon roller coating process comprises four steps of surface cleaning, polishing passivation, roller coating and finished product obtaining. The fluorocarbon roller coating process has the advantages that the aluminum veneer coated with the fluorocarbon stoving varnish has good corrosion resistance, color and gloss retention, the surface layer is smoother and more uniform, and the aluminum veneer is more suitable for curtain wall construction.

Description

technical field [0001] The invention relates to the technical field of coating processing of aluminum veneers, in particular to a fluorocarbon roller coating process for aluminum veneers used in curtain walls. Background technique [0002] Curtain wall aluminum veneer is a new type of curtain wall material that uses high-quality aluminum alloy plate as the base material, and is formed by numerical control bending and other technologies, and the surface is sprayed with decorative paint. [0003] Fluorocarbon coating has excellent corrosion resistance and weather resistance, can resist acid rain, salt spray and various air pollutants, has excellent cold and heat resistance, can resist strong ultraviolet radiation, and can maintain long-term non-fading and non-chalking ,long lasting. The surface of aluminum veneer curtain wall is generally treated with fluorocarbon baking paint after ordinary pretreatment. Fluorocarbon baking varnish is highly praised by the architectural deco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D3/00B05D3/10B05D1/28
CPCB05D1/28B05D3/002B05D3/102B05D7/14B05D2202/25
Inventor 张建军
Owner 江苏美诺斯建材科技有限公司
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