CN101637680A - Antiseptic filtering metal material by plating Cu and CeO2 on surface of copper wire mesh, and preparation and application thereof - Google Patents
Antiseptic filtering metal material by plating Cu and CeO2 on surface of copper wire mesh, and preparation and application thereof Download PDFInfo
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- CN101637680A CN101637680A CN200810012567A CN200810012567A CN101637680A CN 101637680 A CN101637680 A CN 101637680A CN 200810012567 A CN200810012567 A CN 200810012567A CN 200810012567 A CN200810012567 A CN 200810012567A CN 101637680 A CN101637680 A CN 101637680A
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- 239000010949 copper Substances 0.000 title claims abstract description 128
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000001914 filtration Methods 0.000 title claims abstract description 44
- 230000002421 anti-septic effect Effects 0.000 title claims abstract description 38
- 239000007769 metal material Substances 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 238000007747 plating Methods 0.000 title claims description 22
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 title abstract 5
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 title abstract 5
- 239000000463 material Substances 0.000 claims abstract description 64
- 229910052802 copper Inorganic materials 0.000 claims abstract description 56
- 239000002131 composite material Substances 0.000 claims abstract description 40
- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 30
- 239000006260 foam Substances 0.000 claims abstract description 26
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 229910052786 argon Inorganic materials 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 7
- 235000013305 food Nutrition 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims abstract description 5
- 230000000845 anti-microbial effect Effects 0.000 claims description 18
- 238000000151 deposition Methods 0.000 claims description 9
- 230000008021 deposition Effects 0.000 claims description 9
- 238000009713 electroplating Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 7
- 239000003595 mist Substances 0.000 claims description 6
- 238000004544 sputter deposition Methods 0.000 claims description 5
- 238000004378 air conditioning Methods 0.000 claims description 4
- 235000013361 beverage Nutrition 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000012467 final product Substances 0.000 claims description 2
- 241000894006 Bacteria Species 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 abstract 3
- 239000011248 coating agent Substances 0.000 abstract 2
- 150000001298 alcohols Chemical class 0.000 abstract 1
- 238000009395 breeding Methods 0.000 abstract 1
- 230000001488 breeding effect Effects 0.000 abstract 1
- 230000000844 anti-bacterial effect Effects 0.000 description 18
- 238000012360 testing method Methods 0.000 description 14
- 230000003115 biocidal effect Effects 0.000 description 13
- 241000191967 Staphylococcus aureus Species 0.000 description 8
- 239000003242 anti bacterial agent Substances 0.000 description 8
- 229940088710 antibiotic agent Drugs 0.000 description 8
- 150000002500 ions Chemical class 0.000 description 8
- 239000000523 sample Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 241000588724 Escherichia coli Species 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 229910052761 rare earth metal Inorganic materials 0.000 description 6
- 239000013068 control sample Substances 0.000 description 5
- 230000036541 health Effects 0.000 description 5
- 230000001954 sterilising effect Effects 0.000 description 5
- 238000004659 sterilization and disinfection Methods 0.000 description 5
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 4
- 241000222122 Candida albicans Species 0.000 description 4
- 229940095731 candida albicans Drugs 0.000 description 4
- 230000003203 everyday effect Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000003480 eluent Substances 0.000 description 2
- 239000006101 laboratory sample Substances 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 239000006916 nutrient agar Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 1
- 241001278807 Veronica albicans Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000000680 avirulence Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
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- 239000000645 desinfectant Substances 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- PEVJCYPAFCUXEZ-UHFFFAOYSA-J dicopper;phosphonato phosphate Chemical compound [Cu+2].[Cu+2].[O-]P([O-])(=O)OP([O-])([O-])=O PEVJCYPAFCUXEZ-UHFFFAOYSA-J 0.000 description 1
- 230000037213 diet Effects 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012376 hot air sterilization Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012009 microbiological test Methods 0.000 description 1
- LPUQAYUQRXPFSQ-DFWYDOINSA-M monosodium L-glutamate Chemical compound [Na+].[O-]C(=O)[C@@H](N)CCC(O)=O LPUQAYUQRXPFSQ-DFWYDOINSA-M 0.000 description 1
- 235000013923 monosodium glutamate Nutrition 0.000 description 1
- 239000004223 monosodium glutamate Substances 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- VZOPRCCTKLAGPN-ZFJVMAEJSA-L potassium;sodium;(2r,3r)-2,3-dihydroxybutanedioate;tetrahydrate Chemical compound O.O.O.O.[Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O VZOPRCCTKLAGPN-ZFJVMAEJSA-L 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229940074446 sodium potassium tartrate tetrahydrate Drugs 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- RYCLIXPGLDDLTM-UHFFFAOYSA-J tetrapotassium;phosphonato phosphate Chemical compound [K+].[K+].[K+].[K+].[O-]P([O-])(=O)OP([O-])([O-])=O RYCLIXPGLDDLTM-UHFFFAOYSA-J 0.000 description 1
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Abstract
The invention relates to the technology for preparing a filter screen material, in particular to a (Cu+CeO2)/Cu composite mesh antiseptic filtering metal material with good antiseptic performance, anda preparation method and application thereof to solve the problems of bacteria breeding, insufficient copper intake of a human body and the like; and the antiseptic filtering metal material can be applied to production and filter devices for gases or liquid such as foods, drinks, alcohols and the like and filter screens in air conditioners. The foam sponge taken as a substrate material is loadedwith metal (Cu+CeO2)/Cu to form the high-porosity mesh antiseptic filtering metal material. The preparation method comprises that: the substrate material after conductive treatment is plated with an antiseptic Cu coating; when the copper coating film reaches required thickness, the substrate material is subjected to heat treatment in a vacuum furnace or an argon protection furnace to form a metalcopper mesh; and finally, the surface of the metal copper mesh is plated with (Cu+CeO2) to prepare the metal (Cu+CeO2)/Cu loaded composite mesh antiseptic filtering metal material of which the porosity is between 85 and 96 percent, and the pore diameter can be adjusted in a range between 350 and 500 micrometers according to actual requirement.
Description
Technical field:
The present invention relates to the technology of preparing of screen pack material, be specially a kind of (Cu+CeO with excellent anti-bacterium capability
2)/Cu composite mesh antiseptic filtering and its production and application, that is: copper mesh surface plating (Cu+CeO
2) composite mesh antiseptic filtering and its production and application, can be applicable to the screen pack in gases such as food, beverage, drinks or liquid production filter and the air-conditioning.
Background technology:
21st century, the theme in the whole world was " health and environment ", and everyone life is with healthy, and 60% grasps in own hand.That is to say, remove outside the factor that science of heredity etc. can't change that individual residing environment is to life and health play an important role [document 1: Jin Zongzhe, inorganic antibacterial material and application, Beijing: Chemical Industry Press in August, 2004].The sterilization of air, clothing and furniture surface and sterilization are the means an of necessity, but because people's disinfectant used in everyday can only produce short-term effect, and the chemical composition that wherein contains harmful health, the approach such as gasification by surface contact and antiseptic are harmful to health.Therefore, anti-biotic material of new generation has appearred, can be antibiotic for a long time at material surface, but be harmless nontoxic inorganic antibacterial material [document 2: Xu Ying, Hebei College of Science and Engineering's journal, 2001,23 (4): 77 to human body; Document 3: Sun Jian, Qiao Xueliang, Chen Jianguo, material Leader, 2007,21 (VIII): 344].
At present, domestic and international commercial inorganic antibacterial material multiselect Ag
+, Cu
2+And Zn
2+As antibiotic ion.Wherein, Ag
+Antibacterial effect best, but price is also the highest, and silver ion see under light, the heating condition easy to change.In addition, Ag
+Easily and the Cl in the aqueous medium
-, HS
-And S
2-Deng reacting, form water-fast precipitation, thereby lose antibacterial activity [document 4: Zhang Bin, Tang Xiaoning, Zhang Haodong, New Chemical Materials, 2007,35 (2): 73; Document 5:T.N.Kim, Q.L.Feng, J.O.Kim, J.Wu, H.Wang, G.C.Chen, F.Z.Cui, Journal of Materials Science:Materials in Medicine, 1998,9:129].Rare earth element has unique electronic structure and character, and people are called rare earth element " monosodium glutamate " of modern industry visually, are applied in more than 40 industries such as metallurgy, petrochemical industry, medical and health.China has abundant rare earth resources, the development capable advantageous condition of rare-earth products tool [document 6: Mu Kangguo etc., Chinese rare-earth journal, 2003,21 (1): 1].
People's picked-up to copper in diet at present is generally not enough, differs about half with actual psychological need.Certainly, intake is too much, also can bring side effect to healthy, and the copper of taking in 2 milligrams every day just is enough to satisfy physiological requirements.
By above narration as can be known, the copper of normal contents is nontoxic to human body, or even necessary, uses copper can not produce harm to human body and environment in anti-biotic material.Equally, in anti-biotic material, contain a small amount of rare earth element and also can not produce harm [document 7: Gao Jinzhang, Long Quanjiang, Yang Tao, Northwest Normal University's journal, 2002,138 (1): 108] human body.
Summary of the invention:
The object of the present invention is to provide a kind of Cu+CeO with excellent anti-bacterium capability
2/ Cu composite mesh antiseptic filtering and its production and application solves bacterium and multiplies and problem such as human body copper insufficiency of intake.
Technical scheme of the present invention is:
A kind of copper mesh surface plating Cu adds CeO
2Antimicrobial filtering metal material, this metal material adds CeO for the metallic copper net surface plating Cu that plating copper film on the foam sponge base material obtains
2The composite mesh structure, the thickness of copper film is 20 microns-50 microns, Cu adds CeO
2The thickness of film is 2 microns-3 microns, and the porosity of composite mesh structure is 85%-96%, and the aperture is adjustable in 350 microns-500 micrometer ranges.
Described copper mesh surface plating Cu adds CeO
2The preparation method of antimicrobial filtering metal material, be base material with the foam sponge, carried metal (Cu+CeO
2)/Cu forms composite mesh antiseptic filtering, and concrete steps are as follows:
(1) the conduction processing of base material;
(2) plating copper film on base material;
(3) heat treatment, the material that plating is good was heat-treated 1-4 hour in 700-850 ℃ argon shield atmosphere, to remove the organic foam composition in the rack, formed the metal copper mesh;
(4) the metallic copper net surface plating Cu after heat treatment adds CeO
2Film, Cu adds CeO
2Plated film is to add CeO
2Micro mist (8-10g/L) and being furnished with deposits in the churned mechanically copper electroplating solution, obtains carried metal (Cu+CeO
2The composite mesh antiseptic filtering of)/Cu, this composite mesh antiseptic filtering adds CeO by metal copper mesh and metal Cu
2Plated film is formed.
Described conduction processing is by the copper film of ion sputtering coating method at foam sponge material surface deposition 2-3 micron, makes the foam sponge material obtain electric conductivity and gets final product.
Composite mesh antiseptic filtering of the present invention can be applicable to food, beverage, spills the gas or the liquid production filter of class, perhaps is applied to the screen pack in the air-conditioning.
Advantage of the present invention and beneficial effect are:
1, the present invention utilizes metal Cu, Ce element unique biological inorganic chemistry performance (being antibiotic property and avirulence); Cu is deposited on the foam sponge material; make the foam sponge material breakdown under the hot conditions of argon shield having; form metal Cu mesh skeleton material, deposit Cu more in its surface and add CeO
2Thereby, become have high temperature resistant and the fire prevention character (Cu+CeO
2)/Cu antimicrobial filtering material.
2, composite mesh antiseptic filtering preparation method of the present invention is simple, cost is lower.The present invention is base material with the foam sponge, carried metal (Cu+CeO
2)/Cu porous mesh antiseptic filtering, this composite mesh antiseptic filtering adds CeO by metal copper mesh and metal Cu
2Plated film is formed, and last composite mesh antiseptic filtering only has metallic framework to exist, and has made it fire prevention and resistance and high temperature resistance property.
3, adopt the composite mesh antiseptic filtering of the present invention's preparation, characteristics with porous, its porosity can reach 85-96%, the aperture can be adjusted in 350 microns-500 micrometer ranges as required, the advantage of this structure mainly contains: (1) specific area is big, can adsorb and kill various mushrooms dramatically like this; (2) connect mutually between the Kong Yukong, the aperture is more even, and through hole is difficult for being stopped up by less field trash; (3) light specific gravity; (4) after cleaning by proper method, excellent in durability, the Web materials after using after a while can continue to use and keep the good bacterium effect of killing; (5) by adding CeO
2Micro mist can improve the decay resistance of material, suitably slow down Cu
2+The rate of release of ion.
Description of drawings:
Fig. 1 the present invention (Cu+CeO
2The photomacrograph of)/Cu composite mesh antiseptic filtering.
Fig. 2 the present invention (Cu+CeO
2The surface microscopic topographic of)/Cu composite mesh antiseptic filtering.
The antibacterial ring test result of Fig. 3 the present invention.Wherein, (a) staphylococcus aureus; (b) Escherichia coli.
The specific embodiment:
Embodiment 1
By the copper film of ion sputtering coating method, make the foam sponge material obtain electric conductivity 3 microns of foam sponge material (aperture is about 550 microns) surface depositions.Under composition proportion as shown in table 1 and technological parameter condition, foam sponge material after the conductive processing is carried out electroplating copper film, when the thickness of plated material is approximately 20 μ m, from electroplating solution, take out, dry after the washing, under argon shield, be heated to 800 ℃ and kept 3 hours, take out after reducing to room temperature, remove the foam sponge in the rack, form the metal copper mesh;
Table 1 is electroplated Cu solution formula and technological parameter
| Component and technological parameter | Content (g/L) or parameter | Component and parameter | Content (g/L) or parameter |
| Cupric pyrophosphate (Cu 2P 2O 7) | ????50-100 | The pH value | ????7.5-9.2 |
| Potassium pyrophosphate (K 4P 2O 7.3H 2O) | ????200-400 | Temperature/℃ | ????25-60 |
| Sodium potassium tartrate tetrahydrate (KNaC 4H 4O 6.4H 2O) | ????10-30 | Voltage/V | ????12-24 |
| Nitrilotriacetic acid [N (CH 2COOH) 3] | ????12-25 | Current density/Adm -2 | ????0.5-2.0 |
| Potassium nitrate (KNO 3) | ????10-30 |
At last, the Cu of deposition 3 micron thickness adds CeO on the metallic copper net surface that has prepared
2Film, thus carried metal (Cu+CeO obtained
2The composite mesh antiseptic filtering of)/Cu.Its solution composition is basic identical with the copper plating solution shown in the table 1 with technological parameter, has just added the CeO of 8-10g/L in this solution
2Micro mist has also disposed mechanical agitation; Among the present invention, CeO
2The diameter of micro mist is in 0.8 micron-3 micrometer range.This composite mesh antiseptic filtering adds CeO by metal copper mesh and metal Cu
2Plated film is formed, and the porosity of present embodiment composite mesh structure is 96%, and the aperture is about 500 microns, and the content of Ce is 1.1at% (seeing Table 2) in the skin covering of the surface.Figure 1 shows that (Cu+CeO
2)/Cu composite mesh antiseptic filtering photomacrograph, as seen from Figure 1, the micro-pore diameter of Web materials all compare on three directions evenly and Kong Yukong between be interconnected.Figure 2 shows that (Cu+CeO
2The surface microscopic topographic of)/Cu composite mesh antiseptic filtering can be observed by Fig. 2, adds CeO at Cu
2In the film, copper film is a base, CeO
2Particle is random distribution in copper film, and its surface configuration is: be about 2 microns, the wide rectangle that is about 1 micron.
Among the present invention, (Cu+CeO
2The implication of)/Cu is: be matrix with the copper mesh, Cu adds CeO in the plating of copper mesh surface
2Film.
Table 2 (Cu+CeO
2The surface C u of the composite mesh material of)/Cu adds CeO
2Film component
The present invention carries out the anti-microbial property test to the material for preparing, and concrete method of testing is as follows:
1 experimental strain is selected
Adopt ETEC (E.coli) ATCC 8099, staphylococcus aureus (S.aureus) ATCC6538 and Candida albicans (V.albicans) ATCC 10231 etc. has tested the anti-microbial property of material.2 antibacterial experiments
(1) actication of culture
The slant preservation bacterium is transferred on the dull and stereotyped nutrient agar,, transfers every day 1 time, be no more than for 2 weeks at (37 ± 1) ℃ following 24h that cultivates.Adopt the fresh bacterial cultures after the switching continuously 3 times during test.
(2)) laboratory sample
Laboratory sample is a: control sample: do not possess the sponge of antimicrobial component, size is Φ 20mm; B:(Cu+CeO
2The netted anti-biotic material sample of)/Cu: two kinds of size difference Φ 20mm and Φ 26.6mm.
Control sample adopts alcohol disinfecting, and sterilizes 30 minutes with ultraviolet disinfection lamp.Netted anti-biotic material sample is hot air sterilization 2h under 160 ℃ of conditions.
Draw the 5ml sterilized water and join in the sterile petri dish, pick up two aseptic slides with the sterilization tweezers, put into culture dish, the water surface is no more than top slide.Be put on the slide with tweezers folder sample, the test bacterium liquid of some 0.2ml suitable concn on sample makes bacterium liquid and sample even contact again.Culture dish seals with sealing film.Under (37 ± 1) ℃ condition, cultivate.By bacterium liquid being added on the control sample with quadrat method.Every kind of sample all do 3 parallel.
Treat that bacterium liquid and sample effect are after the stipulated time, from incubator, take out culture dish, in each culture dish, add the 45ml eluent respectively, wash control sample, anti-biotic material sample repeatedly, eluent is fully shaken up, carry out gradient dilution, choose the dilution of suitable concn and coat in the nutrient agar plate medium (NA), a ℃ following cultivation was carried out count plate after 24 hours in (37 ± 1), pressed GB 4789.2 " microbiological test of food hygiene-total plate count method for measuring " and measured viable count.
For guaranteeing that the antibacterial tests determination data gets reliability, more than tests triplicate.
Antibacterial experiment the results are shown in Table 3,4.The computing formula of sterilizing rate is:
Viable count in the above-mentioned formula is the viable count behind the antibacterial experiment.
In addition, selecting initial viable count for use is 1.0 * 10
6The staphylococcus aureus ATCC6538 of cfu/ml is as test strain, to netted Cu and netted (Cu+CeO
2The anti-microbial property of two kinds of materials of)/Cu has carried out contrast test; Also estimated (Cu+CeO with antibacterial ring test method
2)/Cu composite mesh material is to the anti-microbial property of ETEC ATCC8099 and staphylococcus aureus ATCC 6538.
Netted (the Cu+CeO of table 3
2The sterilization speed of)/Cu anti-biotic material
Netted Cu of table 4 and netted (Cu+CeO
2The anti-microbial property comparative test result of)/Cu
Test strain: staphylococcus aureus, initial total viable count: 1.0 * 10
6(cfu/ml)
As can be seen from Table 3, (Cu+CeO
2)/Cu composite mesh antiseptic filtering all has good anti-microbial property for these three kinds of representative mushrooms of Escherichia coli, Staphylococcus aureus and candida albicans.Wherein best to colibacillary antibacterial effect, its antibiotic rate has reached 98.2%, 99.1% and 100% respectively after 20 minutes, 40 minutes and 60 minutes action time, and relatively poor relatively to the oidiomycetic antibacterial effect of white, act on and still have the survival of 14cfu/ml clump count after 60 minutes.
As can be seen from Table 4, be 100%, with bacterium liquid effect netted (Cu+CeO after 20 minutes and 40 minutes with the antibiotic rate of bacterium liquid effect two kinds of materials after 60 minutes
2The clump count of)/Cu respectively is 27.5cfu/ml and 13cfu/ml, exceeds 20.5cfu/ml and 10cfu/ml than netted Cu respectively.These data declarations are by adding CeO in netted Cu material
2Its anti-microbial property of micro mist does not produce too big variation, just slows down Cu slightly
2+The dissolution rate of ion, this controls Cu at needs
2+Be useful under the situation of the dissolution rate of ion.
Figure 3 shows that antibacterial ring test result, from Fig. 3 (a) as can be seen, sponge control sample (white) does not have antibacterial ring to occur in to staphylococcic test, and the netted (Cu+CeO of porous
2Then having produced an internal diameter around the)/Cu anti-biotic material is 20mm, outer through being the antibacterial ring of 36.2mm; Shown in Fig. 3 (b), then having produced an internal diameter for Escherichia coli is 26.6mm, outer through for the antibacterial ring of 39.7mm, has presented good antibacterial performance.
Difference from Example 1 is:
By the copper film of ion sputtering coating method, make the foam sponge material obtain electric conductivity 2 microns of foam sponge material (aperture is about 450 microns) surface depositions.Under composition proportion as shown in table 1 and technological parameter condition, foam sponge material after the conductive processing is carried out electroplating copper film, when the thickness of plated material is approximately 50 μ m, from electroplating solution, take out, dry after the washing, under argon shield, be heated to 850 ℃ and kept 1 hour, take out after reducing to room temperature, remove the foam sponge in the rack, form the metal copper mesh; At last, the Cu of deposition 2.5 micron thickness adds CeO on the metallic copper net surface that has prepared
2Film, thus carried metal (Cu+CeO obtained
2The composite mesh antiseptic filtering of)/Cu.This composite mesh antiseptic filtering adds CeO by metal copper mesh and metal Cu
2Plated film is formed, and the porosity of present embodiment composite mesh structure is 85%, and the aperture is about 350 microns.
Present embodiment carries out anti-microbial property test, (Cu+CeO to the material for preparing
2)/Cu composite mesh antiseptic filtering all has good anti-microbial property for these three kinds of representative mushrooms of Escherichia coli, Staphylococcus aureus and Candida albicans.
Embodiment 3
Difference from Example 1 is:
By the copper film of ion sputtering coating method, make the foam sponge material obtain electric conductivity 2.5 microns of foam sponge material (aperture is about 450 microns) surface depositions.Under composition proportion as shown in table 1 and technological parameter condition, foam sponge material after the conductive processing is carried out electroplating copper film, when the thickness of plated material is approximately 23 μ m, from electroplating solution, take out, dry after the washing, under argon shield, be heated to 700 ℃ and kept 4 hours, take out after reducing to room temperature, remove the foam sponge in the rack, form the metal copper mesh; At last, the Cu of deposition 2 micron thickness adds CeO on the metallic copper net surface that has prepared
2Film, thus carried metal (Cu+CeO obtained
2The composite mesh antiseptic filtering of)/Cu.This composite mesh antiseptic filtering adds CeO by metal copper mesh and metal Cu
2Plated film is formed, and the porosity of present embodiment composite mesh structure is 90%, and the aperture is about 400 microns.
Present embodiment carries out anti-microbial property test, (Cu+CeO to the material for preparing
2)/Cu composite mesh antiseptic filtering all has good anti-microbial property for these three kinds of representative mushrooms of Escherichia coli, Staphylococcus aureus and Candida albicans.
Experimental result shows that composite mesh antiseptic filtering of the present invention is applied to the gas or the liquid production filter of food, beverage, drinks; Perhaps, be applied to screen pack in the air-conditioning.
Claims (5)
1. a copper mesh surface plating Cu adds CeO
2Antimicrobial filtering metal material, it is characterized in that: this metal material adds CeO for the metallic copper net surface plating Cu that plating copper film on the foam sponge base material obtains
2The composite mesh structure, the thickness of copper film is 20 microns-50 microns, Cu adds CeO
2Thickness be 2 microns-3 microns, the porosity of composite mesh structure is 85%-96%, the aperture is adjustable in 350 microns-500 micrometer ranges.
2. add CeO according to the described copper mesh of claim 1 surface plating Cu
2The preparation method of antimicrobial filtering metal material, it is characterized in that, be base material with the foam sponge, carried metal (Cu+CeO
2)/Cu forms composite mesh antiseptic filtering, and concrete steps are as follows:
(1) the conduction processing of base material;
(2) plating copper film on base material;
(3) heat treatment, the material that plating is good was heat-treated 1-4 hour in 700-850 ℃ argon shield atmosphere, to remove the organic foam in the rack, formed the metal copper mesh;
(4) plating of the metallic copper net surface after heat treatment Cu adds CeO
2, obtain carried metal (Cu+CeO
2The composite mesh antiseptic filtering of)/Cu, this composite mesh antiseptic filtering adds CeO by metal copper mesh and metal Cu
2Plated film is formed.
3. add CeO according to the described copper mesh of claim 2 surface plating Cu
2The preparation method of antimicrobial filtering metal material, it is characterized in that: described conduction processing is by the copper film of ion sputtering coating method at foam sponge material surface deposition 2-3 micron, makes the foam sponge material obtain electric conductivity and gets final product.
4. add CeO according to the described copper mesh of claim 2 surface plating Cu
2The preparation method of antimicrobial filtering metal material, it is characterized in that: described plated film adopts conventional electro-plating method to carry out electro-coppering; Adding CeO
2Micro mist 8-10g/L also is furnished with in the churned mechanically copper electroplating solution, and deposition Cu adds CeO
2Plated film.
5. add CeO according to the described copper mesh of claim 1 surface plating Cu
2The application of antimicrobial filtering metal material, it is characterized in that: this composite mesh antiseptic filtering is applied to the gas or the liquid production filter of food, beverage, drinks; Perhaps, be applied to screen pack in the air-conditioning.
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| CN104129108A (en) * | 2014-08-01 | 2014-11-05 | 夏芝林 | Composite material for prevention and elimination of microbial pollution in drinking water and preparation method thereof |
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| CN104129108A (en) * | 2014-08-01 | 2014-11-05 | 夏芝林 | Composite material for prevention and elimination of microbial pollution in drinking water and preparation method thereof |
| CN104129108B (en) * | 2014-08-01 | 2017-01-18 | 夏芝林 | Composite material for prevention and elimination of microbial pollution in drinking water and preparation method thereof |
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| CN105088297A (en) * | 2015-07-09 | 2015-11-25 | 吉林大学 | Preparation method of bionic oil-water separation copper net |
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| CN108950654A (en) * | 2018-08-30 | 2018-12-07 | 齐昊 | A kind of antibacterial applications of copper sulphate in painting dressing automobiles cathode electrodip painting |
| CN110373706A (en) * | 2019-08-22 | 2019-10-25 | 电子科技大学 | A kind of on-line maintenance method of acid bright copper plating electroplate liquid |
| CN110373706B (en) * | 2019-08-22 | 2021-05-14 | 电子科技大学 | Online maintenance method of acidic bright copper plating electroplating solution |
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