CN103103406A - Antibacterial aluminum alloy for food container - Google Patents
Antibacterial aluminum alloy for food container Download PDFInfo
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- CN103103406A CN103103406A CN2013100382976A CN201310038297A CN103103406A CN 103103406 A CN103103406 A CN 103103406A CN 2013100382976 A CN2013100382976 A CN 2013100382976A CN 201310038297 A CN201310038297 A CN 201310038297A CN 103103406 A CN103103406 A CN 103103406A
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Abstract
The invention relates to antibacterial aluminum alloy for a food container. The antibacterial aluminum alloy comprises the chemical components in percentage by weight as follows: 0.3-1.5% of Mn, 0.5-1.5% of Mg, 0.1-3.0% of Ag, 0.1-1.0% of Zn, 0.1-1.0% of RE, 0.1-0.2% of Ti, less than 0.3% of Si, less than 0.6% of Fe, less than 0.3% of Cu, less than or equal to 0.20% of other impurities and the balance of Al. The antibacterial aluminum alloy not only has excellent antibacterial performance with the antibacterial property greater than 99.0%, but also maintains good plasticity and corrosion resistance of aluminum alloy, so that the manufacturing demand and the demand on antibacterial performance of container products in industries such as food and kitchen and bath can be satisfied.
Description
Technical field
The present invention relates to the antiseptic aluminum alloy, especially a kind of food product containers antiseptic aluminum alloy.
Background technology
Aluminium alloy is made tank, lid, bottle, bucket, package foil due to lightweight, attractive in appearance, stainless and be easy to be shaped with the form of thin plate and foil, is widely used in the occasions such as beverage, food, makeup, medicine, cigarette, Industrial products.In recent years, along with many, whole world bacterium infects the generation of event, fungi-proofing, antibiotic hygiene control problem receives the very big concern of society, and grocery trade, health care industry and even general family are more and more higher to the hygienic requirements of household utensils, for the constantly growth of demand of antimicrobial prod.In order to satisfy this demand, be badly in need of the aluminium alloy that exploitation has sterilizing function.
In prior art, application number is that 201110171161.3 patents have been announced a kind of antiseptic aluminum alloy for radiator fin, contains 0.01-0.02%Ag, wherein every 20000mm
31 silver atoms is just arranged in aluminium, is not enough so only depend on the germicidal action of silver, wherein also adds 8.5-23.5%Zn, and Zn also has certain anti-microbial effect, jointly has good germ resistance by Zn and Ag.Not only require good antimicrobial property at food product containers with the antiseptic aluminum alloy, also require good plastic property, too high Zn content is to be difficult to satisfy simultaneously above two requirements, is unsuitable for making containers for food use so this patent only is used for radiator fin.
Summary of the invention
For the problems referred to above, the present invention proposes a kind of antiseptic aluminum alloy, by weight percentage, the chemical composition of this aluminium alloy is as follows: 0.3-1.5%Mn, 0.5-1.5%Mg, 0.1-3.0%Ag, 0.1-1.0%Zn, 0.1-1.0%RE, 0.1-0.2%Ti,＜0.3%Si,＜0.6%Fe,＜0.3%Cu, other impurity elements≤0.20%, surplus are Al.This antiseptic aluminum alloy not only has good anti-microbial property, and germ resistance is greater than 99.0%, and keep the good plasticity of aluminium alloy and anti-corrosion characteristics, has satisfied the industry container products such as food, kitchen guarding and has made and require and the requirement of anti-microbial property.
Antiseptic aluminum alloy of the present invention, it is characterized in that: by weight percentage, the chemical composition of this aluminium alloy is as follows: 0.3-1.5%Mn, 0.5-1.5%Mg, 0.1-3.0%Ag, 0.1-1.0%Zn, 0.1-1.0%RE, 0.1-0.2%Ti,＜0.3%Si,＜0.6%Fe,＜0.3%Cu, other impurity elements≤0.20%, surplus are Al.
In the present invention, manganese content is 0.3-1.5%, guarantees that aluminium alloy has enough intensity, and has good plasticity and processing performance.Manganese content is lower than lower limit, and the intensity of alloy and hardness can not guarantee, manganese content MnAl occurs higher than the upper limit in alloy
6Phase, the alloy plasticity variation, easy to crack during shaping, so manganese content of the present invention is 0.3-1.5%, preferred 1.0-1.4%.
Contain 0.5-1.5%Mg in the present invention, Mg solubleness in aluminium is larger, is the principal element that aluminium alloy obtains solution strengthening.Mg content is lower than 0.5%, and the strengthening effect of alloy is less, but Mg content is also unsuitable too high, prevents that itself and the Zn that adds and impurity Cu from forming intermetallic compound, and in aluminium alloy of the present invention, that Mg is 0.5-1.5%, preferred 0.7-1.2%.
Contain 0.1-3.0%Ag in the present invention, the propagation of anti-bacteria also improves anti-microbial property.As everyone knows, aluminum alloy surface forms fine and close oxide film, and the germ resistance of aluminium alloy is the germ resistance of the surface film oxide of aluminium alloy in fact.Ag is very stable, and the oxide film aluminum alloy surface forms still keeps good bactericidal property.Even Ag forms Ag on the surface
2During O, still has good bactericidal property.Ag content is lower than 0.1% the time, and the distribution density of silver atoms in aluminium alloy is low, and germ resistance is also lower.But Ag is precious metal, should not add too much in order to control final cost, takes into account best antibacterial effect and cost control the present invention and determines Ag content preferred 0.5%.
Contain 0.1-1.0%Zn in the present invention.Zn also has germicidal action, and Zn content does not play anti-microbial effect lower than 0.1%, but Zn content surpasses 1.0%, just may form MgZn with Mg
2Low-alloyed plasticity and forming property fall in phase, the preferred 0.5-0.8% of Zn content of the present invention.
Contain 0.1-1.0%RE in the present invention, the RE here refers to the mishmetal (by weight percentage, cerium content is not less than 50%) take Ce as principal element.Rare earth adds not only can form the composite antibiosis effect with Ag, reduces the consumption of silver, also easily forms Al
3The Ce phase, the intensity of raising aluminium alloy.Contain RE amount lower than 0.1% the time, rare earth mainly plays solution strengthening, can not form with Ag the effect of composite antibiosis.But ree content is too high, not only increases cost, also falls low-alloyed plasticity and forming property.The preferred 0.3-0.6% of content of rare earth of the present invention.
Contain 0.1-0.2%Ti in the present invention.Ti forms Al in aluminium alloy
3The Ti phase, alloy refinement aluminium alloy crystal grain improves intensity of aluminum alloy and plasticity.Ti is the same with RE, can also change pattern and size that impurity F e and Fe and Si form Compound Phase, the harm that alleviates its alloy plasticity and forming property.Therefore the present invention is controlled at 0.1-0.2% with Ti content.
In the present invention, Si, Fe and Cu reduce plasticity and the forming property of aluminium alloy, belong to harmful element, so answer its content of reduce.Owing to adding RE and Ti,＜0.3%Si,＜0.6%Fe can satisfy forming requirements.Cu forms Al together with Mg in alloy
2CuMg reduces alloy plasticity, so should be controlled at below 0.3%.
Test of long duration through the contriver is determined, by weight percentage, this food product containers is 1.0%Mn, 1.2%Mg, 0.5%Ag, 0.3%Zn, 0.5%RE, 0.15%Ti, Si＜0.3%, Fe＜0.6%, Cu＜0.3% with the optimum content of the chemical composition of antiseptic aluminum alloy, other impurity elements≤0.20%, surplus are Al.
In the present invention, except specified otherwise, described per-cent all is weight percentage.
In sum, the present invention adds Ag, Zn, RE element in the Al-Mn-Mg alloy in proper range, is guaranteeing that on the suitable intensity of aluminium alloy, good plasticity and shaping basis, the anti-microbial property of alloy product is greater than 99%.This aluminium alloy has satisfied the industries such as beverage, food and has made container to the requirement of its mechanical property, forming property and anti-microbial property, has great economic worth and social value.
Embodiment
Embodiment 1
By weight percentage, with chemical composition be: 0.3%Mn, 0.5%Mg, 0.1%Ag, 0.1%Zn, 0.1%RE, 0.1%Ti, 0.3%Si, 0.6%Fe, 0.3%Cu, surplus is aluminium alloy melting in crucible electrical resistance furnace of Al, then pours into ingot metal.Then ingot casting becomes the aluminium sheet of thick 10mm at 480 ℃ of homogenizing 18h 420 ℃ of forge hots, through 380 ℃ of annealing 1h.The sheet material of the thick 1mm of cold rolling one-tenth obtains product.
Embodiment 2
By weight percentage, with chemical composition be: 0.9%Mn, 1.0%Mg, 1.5%Ag, 0.5%Zn, 0.5%RE, 0.10%Ti, 0.15%Si, 0.3%Fe, 0.15%Cu, surplus is aluminium alloy melting in crucible electrical resistance furnace of Al, then pours into ingot metal.Then ingot casting becomes the aluminium sheet of thick 10mm at 485 ℃ of homogenizing 20h 420 ℃ of forge hots, through 390 ℃ of annealing 1h.The sheet material of the thick 0.4mm of cold rolling one-tenth obtains product.
Embodiment 3
By weight percentage, with chemical composition be: 1.5%Mn, 1.5%Mg, 3.0%Ag, 1.0%Zn, 1.0%RE, 0.2%Ti, 0.1%Si, 0.1%Fe, 0.1%Cu, surplus is aluminium alloy melting in crucible electrical resistance furnace of Al, then pours into ingot metal.Then ingot casting becomes the aluminium sheet of thick 10mm at 500 ℃ of homogenizing 24h 420 ℃ of forge hots, through 400 ℃ of annealing 1h.The sheet material of the thick 0.5mm of cold rolling one-tenth obtains product.
Embodiment 4
By weight percentage, with chemical composition be: 1.0%Mn, 1.2%Mg, 0.5%Ag, 0.3%Zn, 0.5%RE, 0.15%Ti, 0.26%Si, 0.58%Fe, 0.28%Cu, surplus is aluminium alloy melting in crucible electrical resistance furnace of Al, then pours into ingot metal.Then ingot casting becomes the aluminium sheet of thick 10mm at 490 ℃ of homogenizing 20h 420 ℃ of forge hots, through 390 ℃ of annealing 1h.The sheet material of the thick 0.8mm of cold rolling one-tenth obtains product.
Comparative example
Prepared alloy product in above-described embodiment 1-4 and 3004 aluminium alloys are carried out antibacterial tests and mechanical property test.The germ resistance test is adopted and is carried out according to Nippon Standard JIS Z 2801-2000, and tension test is measured according to GB/T228.1-2010, the results are shown in Table 1.
Table 1
| Specimen types | Chinese People's Anti-Japanese Military and Political College's enterobacteria rate (%) | Anti-Staphylococcus aureus rate (%) | Tensile strength/MPa | Proof strength of non-proportional R p0.2/MPa | Maximum, force disproportional elongation (%) |
| Embodiment 1 | 90.4 | 99.5 | 108 | 47 | 26 |
| Embodiment 2 | 99.9 | 99.9 | 178 | 69 | 21 |
| Embodiment 3 | 99.9 | 99.9 | 187 | 73 | 20 |
| Embodiment 4 | 99.9 | 99.9 | 183 | 70 | 20 |
| 3004 aluminium alloys | 0 | 0 | 180 | 70 | 20 |
As seen from Table 1, although 3004 aluminium alloys are suitable with alloy product mechanical property of the present invention, do not have germ resistance.
Claims (6)
1. food product containers antiseptic aluminum alloy, it is characterized in that: by weight percentage, the chemical composition of this aluminium alloy is as follows: 0.3-1.5%Mn, 0.5-1.5%Mg, 0.1-3.0%Ag, 0.1-1.0%Zn, 0.1-1.0%RE, 0.1-0.2%Ti,＜0.3%Si,＜0.6%Fe,＜0.3%Cu, other impurity elements≤0.20%, surplus are Al.
2. antiseptic aluminum alloy according to claim 1, it is characterized in that: by weight percentage, Mn content is 1.0-1.4%.
3. antiseptic aluminum alloy according to claim 1, it is characterized in that: by weight percentage, Mg content is 0.7-1.2%.
4. antiseptic aluminum alloy according to claim 1, it is characterized in that: by weight percentage, RE content is 0.3-0.6%.
5. according to claim 1-4 described antiseptic aluminum alloys of any one is characterized in that:
By weight percentage, the chemical composition of this aluminium alloy is as follows: 1.0%Mn, 1.2%Mg, 0.5%Ag, 0.3%Zn, 0.5%RE, 0.15%Ti, Si＜0.3%, Fe＜0.6%, Cu＜0.3%, and other impurity elements≤0.20%, surplus is Al.
6. according to claim 1 or 4 described antiseptic aluminum alloys, it is characterized in that: by weight percentage, described RE is that cerium content is not less than 50% mishmetal.
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| CN201310038297.6A CN103103406B (en) | 2013-01-31 | 2013-01-31 | Antibacterial aluminum alloy for food container |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119611A (en) * | 2016-04-27 | 2016-11-16 | 浙江华仁科技有限公司 | A kind of composite antibacterial aluminium alloy and manufacture method |
| CN106367659A (en) * | 2016-08-30 | 2017-02-01 | 福建省邦尚环保科技有限公司 | Self-sterilizing stair railing and preparation technology thereof |
| CN107201467A (en) * | 2017-05-24 | 2017-09-26 | 中国科学院金属研究所 | A kind of heat treatment type Antibacterial aluminum alloy and its heat treatment method |
| CN108118195A (en) * | 2017-12-07 | 2018-06-05 | 广西百色兴和铝业有限公司 | Novel antibacterial eats aluminium foil |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001026833A (en) * | 1999-07-13 | 2001-01-30 | Mitsubishi Heavy Ind Ltd | Antibacterial high corrosion resistant aluminum alloy material and its manufacture |
| CN101484598A (en) * | 2006-06-16 | 2009-07-15 | 阿斯里斯铝业科布伦茨有限公司 | High damage tolerant AA6xxx-series alloy for aerospace application |
| CN102242313A (en) * | 2011-07-18 | 2011-11-16 | 山东建筑大学 | High-hardness silver-bearing martensite antibacterial stainless steel |
-
2013
- 2013-01-31 CN CN201310038297.6A patent/CN103103406B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001026833A (en) * | 1999-07-13 | 2001-01-30 | Mitsubishi Heavy Ind Ltd | Antibacterial high corrosion resistant aluminum alloy material and its manufacture |
| CN101484598A (en) * | 2006-06-16 | 2009-07-15 | 阿斯里斯铝业科布伦茨有限公司 | High damage tolerant AA6xxx-series alloy for aerospace application |
| CN102242313A (en) * | 2011-07-18 | 2011-11-16 | 山东建筑大学 | High-hardness silver-bearing martensite antibacterial stainless steel |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119611A (en) * | 2016-04-27 | 2016-11-16 | 浙江华仁科技有限公司 | A kind of composite antibacterial aluminium alloy and manufacture method |
| CN106367659A (en) * | 2016-08-30 | 2017-02-01 | 福建省邦尚环保科技有限公司 | Self-sterilizing stair railing and preparation technology thereof |
| CN107201467A (en) * | 2017-05-24 | 2017-09-26 | 中国科学院金属研究所 | A kind of heat treatment type Antibacterial aluminum alloy and its heat treatment method |
| CN107201467B (en) * | 2017-05-24 | 2019-01-25 | 中国科学院金属研究所 | A kind of heat treatment type Antibacterial aluminum alloy and its heat treatment method |
| CN108118195A (en) * | 2017-12-07 | 2018-06-05 | 广西百色兴和铝业有限公司 | Novel antibacterial eats aluminium foil |
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| CN103103406B (en) | 2015-02-18 |
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