CN109881235A - A kind of antibacterial surface processing method of aluminium alloy - Google Patents
A kind of antibacterial surface processing method of aluminium alloy Download PDFInfo
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- CN109881235A CN109881235A CN201910201327.8A CN201910201327A CN109881235A CN 109881235 A CN109881235 A CN 109881235A CN 201910201327 A CN201910201327 A CN 201910201327A CN 109881235 A CN109881235 A CN 109881235A
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Abstract
The invention mainly relates to alloy surface processing technical fields, disclose a kind of antibacterial surface processing method of aluminium alloy, comprising: polishing, degreasing, anodic oxidation, cleaning, antimicrobial treatment；The antibacterial surface processing method of aluminium alloy provided by the invention, method is simple, the antimicrobial treatment aluminium alloy being prepared can effectively inhibit varied bacteria growing, bacteriostasis rate reaches 96%, antibacterial field can be required effective for food, feed, fertilizer and chemical industry, guarantee product safety, avoids aluminium alloy from generating corrosion phenomenon, extend the service life of aluminium alloy；Sanding and polishing is carried out after first aluminum alloy surface is cleaned up, enables aluminum alloy to that surface is smooth, conducive to the antimicrobial treatment in later period, improves antibacterial effect；Aluminium alloy is cleaned using sodium carbonate liquor after polishing, the fat deposit on surface is removed, is aoxidized conducive to aluminum alloy surface.
Description
Technical field
The invention mainly relates at alloy surface processing technical field more particularly to a kind of antibacterial surface of aluminium alloy
Reason method.
Background technique
Most widely used a kind of non-ferrous metal structural material, is widely used in aviation, automobile, wheel in aluminium alloy industry
Ship, machine-building and chemical industry etc., with the rapid development of industrial economy, the demand of aluminium alloy is also increasingly increasing, but
It is aluminium alloy bacterium easy to breed in wet air, generates corrosion phenomenon, be initially spot corrosion occur, with extent of corrosion
Be continuously increased, it may appear that large stretch of corrosion seriously affects use and the decorative effect of aluminium alloy.Currently in order to improving aluminium alloy
Anti-microbial property, delay aluminium alloy generate corrosion phenomena, be all that other metallic elements are added in aluminium alloy, pass through change aluminium close
Gold is formulated to improve the antibiotic property of aluminium alloy, higher cost, and effect is very unobvious, food, feed, fertilizer and chemical industry etc.
Field needs to inhibit the growth of miscellaneous bacteria in the preparation of product and packaging process, reduces and avoid the use of chemical bactericide, with
Guarantee the yield and quality of product, therefore, it is necessary to a kind of antibacterial surface processing methods of effective aluminium alloy.
Summary of the invention
In order to make up the defect of prior art, the object of the present invention is to provide a kind of antibacterial surface processing sides of aluminium alloy
Method.
A kind of antibacterial surface processing method of aluminium alloy, comprising the following steps:
(1) it polishes: aluminum alloy surface being cleaned up, aluminum alloy surface is polished, obtains polishing aluminium alloy；
(2) degreasing: by polish aluminium alloy be placed in concentration be 21 ~ 23% sodium carbonate liquor in, in 46 ~ 48 DEG C be cleaned by ultrasonic 10 ~
15min, frequency are 32 ~ 34kHz, obtain degreasing aluminium alloy；
(3) anodic oxidation: degreasing aluminium alloy is placed in sulfuric acid solution, using degreasing aluminium alloy as anode, carries out anodic oxidation, in
19 ~ 21 DEG C of 40 ~ 45min of processing, obtain anodized aluminum alloy；
(4) it cleans: anodized aluminum alloy is placed in in 60 ~ 70 DEG C of heating pure water 10 ~ 15min of flushing, then to be placed in room temperature pure
15 ~ 20min is rinsed in water, drying obtains cleaning aluminum alloy；
(5) antimicrobial treatment: cleaning aluminum alloy is placed in colourless Nano silver solution, in 45 ~ 50 DEG C of 8 ~ 10min of ultrasound, after taking-up
Be placed in 900 ~ 1000 DEG C of baking 30 ~ 40s, it is to be baked after aluminium alloy naturally cool to 130 ~ 180 DEG C, repeat progress ultrasound and
Baking repeats 4 ~ 5 times, and natural cooling obtains antimicrobial treatment aluminium alloy.
The polishing of the step (1), the surface roughness enabled aluminum alloy to are 0.12 ~ 0.16 μm.
The anodic oxidation of the step (3), sulfuric acid solution concentration are 160 ~ 170g/L, and aluminium ion concentration is 12 ~ 14g/L,
Current density is 1.3 ~ 1.5A/dm2, alternating voltage is 14 ~ 16V.
The colourless Nano silver solution of the step (5), nano silver partial size are 2 ~ 4nm, and concentration is 2500 ~ 3000ppm.
The antimicrobial treatment aluminium alloy that the antibacterial surface processing method of the aluminium alloy is prepared.
The application method of the antimicrobial treatment aluminium alloy is used for food, feed, fertilizer and chemical field.
The invention has the advantages that the antibacterial surface processing method of aluminium alloy provided by the invention, method is simple, is prepared
Antimicrobial treatment aluminium alloy can effectively inhibit varied bacteria growing, bacteriostasis rate reaches 96%, can be effective for food, feed, fertilizer
And chemical industry requires antibacterial field, guarantees product safety, and aluminium alloy is avoided to generate corrosion phenomenon, extend aluminium alloy uses the longevity
Life；Sanding and polishing is carried out after first aluminum alloy surface is cleaned up, and enables aluminum alloy to that surface is smooth, conducive to the antimicrobial treatment in later period,
Improve antibacterial effect；Aluminium alloy is cleaned using sodium carbonate liquor after polishing, removes the fat deposit on surface, is conducive to aluminium alloy
Surface is aoxidized；Anodic oxidation is carried out to aluminum alloy surface after cleaning, the condition of anodic oxidation is gradually adjusted, enables aluminum alloy to table
Face forms uniformly fine and closely woven alumina layer, with a thickness of 6 ~ 7 μm；It is first handled, is reused using hot water after anodized
Normal-temperature water is cleaned, and sulfuric acid solution remained on surface is removed, and is conducive to subsequent antimicrobial treatment；Aluminium alloy is placed in nothing after cleaning
High temperature ultrasonic is carried out in color Nano silver solution, is made nano silver particles even into aluminium oxide micropore, is carried out moment after taking-up again
High-temperature baking makes nano silver particles molten homogeneous, is repeated a number of times ultrasound and high-temperature baking, fills up nano silver particles uniformly
Aluminium oxide micropore forms the nanometer silver antimicrobial layer of even compact in aluminum alloy surface, improves the hardness of aluminium oxide micropore and resistance to
Mill property, enhances the glossiness and biocidal property of aluminium alloy, can be widely applied to need antibacterial industrial circle, hence it is evident that improve aluminium
The practical performance and decorative performance of alloy.
Specific embodiment
Illustrate the present invention with specific embodiment below.
Embodiment 1
A kind of antibacterial surface processing method of aluminium alloy, comprising the following steps:
(1) it polishes: aluminum alloy surface being cleaned up, aluminum alloy surface is polished, the surface roughness enabled aluminum alloy to is
0.12 ~ 0.16 μm, obtain polishing aluminium alloy；
(2) degreasing: aluminium alloy will be polished and be placed in the sodium carbonate liquor that concentration is 21%, in 46 DEG C of ultrasonic cleaning 10min, frequency
For 32kHz, degreasing aluminium alloy is obtained；
(3) anodic oxidation: degreasing aluminium alloy is placed in sulfuric acid solution, using degreasing aluminium alloy as anode, carries out anodic oxidation, sulphur
Acid solutions are 160g/L, aluminium ion concentration 12g/L, current density 1.3A/dm2, alternating voltage 14V, in 19 DEG C
40min is handled, anodized aluminum alloy is obtained；
(4) it cleans: anodized aluminum alloy being placed in 60 DEG C of heating pure water and rinse 10min, then be placed in room temperature pure water and rush
15min is washed, dries, obtains cleaning aluminum alloy；
(5) antimicrobial treatment: cleaning aluminum alloy is placed in colourless Nano silver solution, and nano silver partial size is 2nm, and concentration is
2500ppm, in 45 DEG C of ultrasound 8min, taking-up is placed on 900 DEG C of baking 30s, it is to be baked after aluminium alloy naturally cool to 130
DEG C, progress ultrasound and baking are repeated, is repeated 4 times, natural cooling, obtains antimicrobial treatment aluminium alloy.
The antimicrobial treatment aluminium alloy that the antibacterial surface processing method of the aluminium alloy is prepared.
The application method of the antimicrobial treatment aluminium alloy is used for food, feed, fertilizer and chemical field.
Embodiment 2
A kind of antibacterial surface processing method of aluminium alloy, comprising the following steps:
(1) it polishes: aluminum alloy surface being cleaned up, aluminum alloy surface is polished, the surface roughness enabled aluminum alloy to is
0.12 ~ 0.16 μm, obtain polishing aluminium alloy；
(2) degreasing: aluminium alloy will be polished and be placed in the sodium carbonate liquor that concentration is 22%, in 47 DEG C of ultrasonic cleaning 13min, frequency
For 33kHz, degreasing aluminium alloy is obtained；
(3) anodic oxidation: degreasing aluminium alloy is placed in sulfuric acid solution, using degreasing aluminium alloy as anode, carries out anodic oxidation, sulphur
Acid solutions are 165g/L, aluminium ion concentration 13g/L, current density 1.4A/dm2, alternating voltage 15V, in 20 DEG C
43min is handled, anodized aluminum alloy is obtained；
(4) it cleans: anodized aluminum alloy being placed in 65 DEG C of heating pure water and rinse 13min, then be placed in room temperature pure water and rush
18min is washed, dries, obtains cleaning aluminum alloy；
(5) antimicrobial treatment: cleaning aluminum alloy is placed in colourless Nano silver solution, and nano silver partial size is 3nm, and concentration is
2800ppm, in 48 DEG C of ultrasound 9min, taking-up is placed on 950 DEG C of baking 35s, it is to be baked after aluminium alloy naturally cool to 160
DEG C, progress ultrasound and baking are repeated, is repeated 4 times, natural cooling, obtains antimicrobial treatment aluminium alloy.
The antimicrobial treatment aluminium alloy that the antibacterial surface processing method of the aluminium alloy is prepared.
The application method of the antimicrobial treatment aluminium alloy is used for food, feed, fertilizer and chemical field.
Embodiment 3
A kind of antibacterial surface processing method of aluminium alloy, comprising the following steps:
(1) it polishes: aluminum alloy surface being cleaned up, aluminum alloy surface is polished, the surface roughness enabled aluminum alloy to is
0.12 ~ 0.16 μm, obtain polishing aluminium alloy；
(2) degreasing: aluminium alloy will be polished and be placed in the sodium carbonate liquor that concentration is 23%, in 48 DEG C of ultrasonic cleaning 15min, frequency
For 34kHz, degreasing aluminium alloy is obtained；
(3) anodic oxidation: degreasing aluminium alloy is placed in sulfuric acid solution, using degreasing aluminium alloy as anode, carries out anodic oxidation, sulphur
Acid solutions are 170g/L, aluminium ion concentration 14g/L, current density 1.5A/dm2, alternating voltage 16V, in 21 DEG C
45min is handled, anodized aluminum alloy is obtained；
(4) it cleans: anodized aluminum alloy being placed in 70 DEG C of heating pure water and rinse 15min, then be placed in room temperature pure water and rush
20min is washed, dries, obtains cleaning aluminum alloy；
(5) antimicrobial treatment: cleaning aluminum alloy is placed in colourless Nano silver solution, and nano silver partial size is 4nm, and concentration is
3000ppm, in 50 DEG C of ultrasound 10min, taking-up is placed on 1000 DEG C of baking 40s, it is to be baked after aluminium alloy naturally cool to 180
DEG C, progress ultrasound and baking are repeated, is repeated 5 times, natural cooling, obtains antimicrobial treatment aluminium alloy.
The antimicrobial treatment aluminium alloy that the antibacterial surface processing method of the aluminium alloy is prepared.
The application method of the antimicrobial treatment aluminium alloy is used for food, feed, fertilizer and chemical field.
Comparative example 1
Remove the polishing in step (1), remaining method, with embodiment 1.
Comparative example 2
Remove the degreasing in step (2), remaining method, with embodiment 1.
Comparative example 3
30min, remaining method, with embodiment 1 are handled in step (3).
Comparative example 4
It removes step (4), remaining method, with embodiment 1.
Comparative example 5
Step is repeated 2 times in (5), remaining method, with embodiment 1.
The biocidal property and corrosion resistance of embodiment and comparative example aluminium alloy:
Aluminium alloy each 8 of difference selection example and comparative example, size are the cube of side length 5cm, and each group selects 2 respectively
Part is inoculated with mould to each group aluminum alloy surface, the bacteriostasis rate for calculating mould for 24 hours is cultivated under the optimum condition of mould, in room temperature
Under normal pressure, each group selects 2 to be placed in the NaCl solution of 6mol/L respectively, selects 2 and is placed in the HCl solution of 6mol/L, selects
It selects 2 to be placed in the NaOH solution of 6mol/L, each alloy material is dipped in 5cm under liquid level, and the container that each group uses is that glass holds
Device, observation each group alloy material there is the time corroded, results are averaged, the biocidal property of embodiment and comparative example aluminium alloy and
Corrosion resistance is shown in Table 1.
Table 1: the biocidal property and corrosion resistance of embodiment and comparative example aluminium alloy
From table 1 the result shows that, the antibacterial surface processing method of the aluminium alloy of embodiment, bacteriostasis rate, acid resistance, alkali resistance and resistance to
Salt is obviously strong compared with comparative example, illustrates that the antibacterial surface processing method of aluminium alloy provided by the invention has processing effect well
Fruit.
Claims (6)
1. a kind of antibacterial surface processing method of aluminium alloy, which comprises the following steps:
(1) it polishes: aluminum alloy surface being cleaned up, aluminum alloy surface is polished, obtains polishing aluminium alloy；
(2) degreasing: by polish aluminium alloy be placed in concentration be 21 ~ 23% sodium carbonate liquor in, in 46 ~ 48 DEG C be cleaned by ultrasonic 10 ~
15min, frequency are 32 ~ 34kHz, obtain degreasing aluminium alloy；
(3) anodic oxidation: degreasing aluminium alloy is placed in sulfuric acid solution, using degreasing aluminium alloy as anode, carries out anodic oxidation, in
19 ~ 21 DEG C of 40 ~ 45min of processing, obtain anodized aluminum alloy；
(4) it cleans: anodized aluminum alloy is placed in in 60 ~ 70 DEG C of heating pure water 10 ~ 15min of flushing, then to be placed in room temperature pure
15 ~ 20min is rinsed in water, drying obtains cleaning aluminum alloy；
(5) antimicrobial treatment: cleaning aluminum alloy is placed in colourless Nano silver solution, in 45 ~ 50 DEG C of 8 ~ 10min of ultrasound, after taking-up
Be placed in 900 ~ 1000 DEG C of baking 30 ~ 40s, it is to be baked after aluminium alloy naturally cool to 130 ~ 180 DEG C, repeat progress ultrasound and
Baking repeats 4 ~ 5 times, and natural cooling obtains antimicrobial treatment aluminium alloy.
2. the antibacterial surface processing method of aluminium alloy according to claim 1, which is characterized in that the polishing of the step (1),
The surface roughness enabled aluminum alloy to is 0.12 ~ 0.16 μm.
3. the antibacterial surface processing method of aluminium alloy according to claim 1, which is characterized in that the anode of the step (3)
Oxidation, sulfuric acid solution concentration are 160 ~ 170g/L, and aluminium ion concentration is 12 ~ 14g/L, and current density is 1.3 ~ 1.5A/dm2, hand over
Galvanic electricity pressure is 14 ~ 16V.
4. the antibacterial surface processing method of aluminium alloy according to claim 1, which is characterized in that the step (5) it is colourless
Nano silver solution, nano silver partial size are 2 ~ 4nm, and concentration is 2500 ~ 3000ppm.
5. the antimicrobial treatment aluminium that a kind of antibacterial surface processing method of any one of claim 1 ~ 4 aluminium alloy is prepared closes
Gold.
6. antimicrobial treatment aluminium described in a kind of claim 5 close application method, which is characterized in that for food, feed, fertilizer and
Chemical field.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111778537A (en) * | 2020-07-06 | 2020-10-16 | 上海脉诺金属表面处理技术有限公司 | Normal-temperature hard oxidation liquid for antibacterial and mildewproof aluminum alloy |
| CN112680764A (en) * | 2020-12-16 | 2021-04-20 | 朱岳 | Aluminum alloy anodic oxidation composite film layer treatment method |
| CN113463158A (en) * | 2021-06-09 | 2021-10-01 | 中国科学院金属研究所 | Surface antibacterial anodic oxidation process of aluminum alloy |
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| JPS62182298A (en) * | 1986-01-17 | 1987-08-10 | Nippon Alum Mfg Co Ltd:The | Aluminum product having antibacterial or antimold anodic oxide film |
| JPH0971897A (en) * | 1995-09-06 | 1997-03-18 | Akira Fujishima | Aluminum building material and colored aluminum building material having antimicrobial, fungiproof and stainproof properties and their production |
| KR20060122245A (en) * | 2005-05-26 | 2006-11-30 | 이갑두 | Manufacturing method of aluminum cooking vessel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111778537A (en) * | 2020-07-06 | 2020-10-16 | 上海脉诺金属表面处理技术有限公司 | Normal-temperature hard oxidation liquid for antibacterial and mildewproof aluminum alloy |
| CN112680764A (en) * | 2020-12-16 | 2021-04-20 | 朱岳 | Aluminum alloy anodic oxidation composite film layer treatment method |
| CN113463158A (en) * | 2021-06-09 | 2021-10-01 | 中国科学院金属研究所 | Surface antibacterial anodic oxidation process of aluminum alloy |
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Application publication date: 20190614 |