CN118240435A - Efficient antibacterial paint prepared from superfine zinc-loaded antibacterial agent and preparation method thereof - Google Patents
Efficient antibacterial paint prepared from superfine zinc-loaded antibacterial agent and preparation method thereof Download PDFInfo
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- CN118240435A CN118240435A CN202410496530.3A CN202410496530A CN118240435A CN 118240435 A CN118240435 A CN 118240435A CN 202410496530 A CN202410496530 A CN 202410496530A CN 118240435 A CN118240435 A CN 118240435A
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- 239000003242 anti bacterial agent Substances 0.000 title claims abstract description 43
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 43
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000011701 zinc Substances 0.000 title claims abstract description 25
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 25
- 239000003973 paint Substances 0.000 title claims description 15
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 63
- 238000000576 coating method Methods 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 24
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000012767 functional filler Substances 0.000 claims abstract description 14
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 13
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 13
- 229910052613 tourmaline Inorganic materials 0.000 claims abstract description 12
- 229940070527 tourmaline Drugs 0.000 claims abstract description 12
- 239000011032 tourmaline Substances 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000004113 Sepiolite Substances 0.000 claims abstract description 10
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 10
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 10
- 239000000919 ceramic Substances 0.000 claims abstract description 10
- 239000010451 perlite Substances 0.000 claims abstract description 10
- 235000019362 perlite Nutrition 0.000 claims abstract description 10
- 235000019355 sepiolite Nutrition 0.000 claims abstract description 10
- 229910052624 sepiolite Inorganic materials 0.000 claims abstract description 10
- 239000004575 stone Substances 0.000 claims abstract description 10
- 239000004094 surface-active agent Substances 0.000 claims abstract description 10
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 10
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims abstract description 10
- 239000002023 wood Substances 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims abstract description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000000440 bentonite Substances 0.000 claims description 12
- 229910000278 bentonite Inorganic materials 0.000 claims description 12
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 12
- -1 dicyclopentadienyl oxyethyl acrylate Chemical compound 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 12
- 239000000839 emulsion Substances 0.000 claims description 12
- 238000000227 grinding Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 claims description 6
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 6
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 6
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- IWLXWEWGQZEKGZ-UHFFFAOYSA-N azane;zinc Chemical compound N.[Zn] IWLXWEWGQZEKGZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000013530 defoamer Substances 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 150000003751 zinc Chemical class 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- IBLKWZIFZMJLFL-UHFFFAOYSA-N 1-phenoxypropan-2-ol Chemical compound CC(O)COC1=CC=CC=C1 IBLKWZIFZMJLFL-UHFFFAOYSA-N 0.000 claims description 3
- QCAHUFWKIQLBNB-UHFFFAOYSA-N 3-(3-methoxypropoxy)propan-1-ol Chemical compound COCCCOCCCO QCAHUFWKIQLBNB-UHFFFAOYSA-N 0.000 claims description 3
- CDOUZKKFHVEKRI-UHFFFAOYSA-N 3-bromo-n-[(prop-2-enoylamino)methyl]propanamide Chemical compound BrCCC(=O)NCNC(=O)C=C CDOUZKKFHVEKRI-UHFFFAOYSA-N 0.000 claims description 3
- 239000004359 castor oil Substances 0.000 claims description 3
- 235000019438 castor oil Nutrition 0.000 claims description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 3
- 235000019329 dioctyl sodium sulphosuccinate Nutrition 0.000 claims description 3
- BHXIWUJLHYHGSJ-UHFFFAOYSA-N ethyl 3-ethoxypropanoate Chemical compound CCOCCC(=O)OCC BHXIWUJLHYHGSJ-UHFFFAOYSA-N 0.000 claims description 3
- 229930182478 glucoside Natural products 0.000 claims description 3
- 150000008131 glucosides Chemical class 0.000 claims description 3
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 3
- 229940075507 glyceryl monostearate Drugs 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- 239000001788 mono and diglycerides of fatty acids Substances 0.000 claims description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000000137 annealing Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 description 5
- 239000002159 nanocrystal Substances 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 230000000845 anti-microbial effect Effects 0.000 description 4
- 230000001580 bacterial effect Effects 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 241000588724 Escherichia coli Species 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- UHPMCKVQTMMPCG-UHFFFAOYSA-N 5,8-dihydroxy-2-methoxy-6-methyl-7-(2-oxopropyl)naphthalene-1,4-dione Chemical compound CC1=C(CC(C)=O)C(O)=C2C(=O)C(OC)=CC(=O)C2=C1O UHPMCKVQTMMPCG-UHFFFAOYSA-N 0.000 description 1
- 241000228245 Aspergillus niger Species 0.000 description 1
- 241000222122 Candida albicans Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 241000223218 Fusarium Species 0.000 description 1
- 241000589517 Pseudomonas aeruginosa Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 241000191940 Staphylococcus Species 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000004599 antimicrobial Substances 0.000 description 1
- 229940095731 candida albicans Drugs 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of coatings, in particular to a high-efficiency antibacterial coating prepared by adopting an ultrafine zinc-loaded antibacterial agent and a preparation method thereof. The composite material comprises the following raw materials in parts by weight: 52-80 parts of film forming substances and 23-42 parts of functional fillers; the film forming material comprises the following components in parts by weight: 28 to 56 parts of water-based acrylic resin, 18.5 to 41 parts of water, 0.8 to 1.2 parts of film forming auxiliary agent, 0.3 to 0.5 part of surfactant and 0.2 to 0.4 part of defoaming agent; the functional filler comprises the following components in parts by weight: 8.5 to 14.5 parts of perlite powder, 3.5 to 7.5 parts of titanium dioxide, 0.5 to 7.5 parts of superfine zinc-carrying antibacterial agent, 1.5 to 3 parts of cast stone powder, 0.5 to 2.5 parts of antioxidant expandable graphite powder, 3 to 6 parts of sepiolite powder, 0.6 to 1.2 parts of nano ceramic plasticizing wood powder, 1.8 to 4.2 parts of tourmaline powder and 0.6 to 1.2 parts of nanocrystalline hydroxyapatite powder.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to an ultrafine zinc-loaded antibacterial agent, an antibacterial coating which has the advantages of good binding force with a matrix, excellent antibacterial effect, no toxicity, environmental protection, air purification, wide raw material sources and low cost, and a preparation method thereof.
Background
With the rapid development of society, the clean requirements of people on living environments are continuously improved. For example, in the field of surface coating, especially in hospitals, kindergartens, nursing homes and other places, the coating for aesthetic and basic layer protection alone cannot meet the requirements, and the surface coating is required to have health efficacy. Thus, the market demand for antimicrobial materials is also increasing.
The antibacterial paint is prepared by adding antibacterial agent into the paint, and has antibacterial effect, and can kill mold and bacteria such as Escherichia coli and staphylococcus to improve indoor environment and protect health.
Some antibacterial agents (such as nano silver) commonly used at present have high-efficiency antibacterial activity, but are not stable enough, are easy to agglomerate in the coating, and are not uniformly dispersed. Therefore, there is a great need to develop antimicrobial agents and antimicrobial coatings that are stable and durable, have a broad spectrum of antimicrobial properties, and are excellent in environmental compatibility.
Disclosure of Invention
The invention aims to overcome the technical problems, and aims to provide an efficient antibacterial coating prepared from an ultrafine zinc-loaded antibacterial agent and a preparation method thereof.
In order to achieve the above purpose, the invention adopts the following technical scheme:
An efficient antibacterial coating prepared by adopting an ultrafine zinc-loaded antibacterial agent is characterized in that: the composite material comprises the following raw materials in parts by weight: 52-80 parts of film forming substances and 23-42 parts of functional fillers;
the film forming material comprises the following components in parts by weight:
28 to 56 parts of water-based acrylic resin, 18.5 to 41 parts of water, 0.8 to 1.2 parts of film forming auxiliary agent, 0.3 to 0.5 part of surfactant and 0.2 to 0.4 part of defoaming agent;
the functional filler comprises the following components in parts by weight:
8.5 to 14.5 parts of perlite powder, 3.5 to 7.5 parts of titanium dioxide, 0.5 to 7.5 parts of superfine zinc-carrying antibacterial agent, 1.5 to 3 parts of cast stone powder, 0.5 to 2.5 parts of antioxidant expandable graphite powder, 3 to 6 parts of sepiolite powder, 0.6 to 1.2 parts of nano ceramic plasticizing wood powder, 1.8 to 4.2 parts of tourmaline powder and 0.6 to 1.2 parts of nanocrystalline hydroxyapatite powder.
Further, the aqueous acrylic resin is aqueous hydroxyl acrylic resin.
Further, the film forming auxiliary agent is one or more of dicyclopentadienyl oxyethyl acrylate, ethyl 3-ethoxypropionate, propylene glycol phenyl ether and dipropylene glycol monomethyl ether.
Further, the surfactant is one or more of dioctyl sodium sulfosuccinate, sulfated castor oil, cetostearyl glucoside and glyceryl monostearate.
Further, the defoamer is one or more of end group esterified polyether derivative, polydimethylsiloxane and GPES type polyether.
Further, the granularity of the perlite powder is 5-20 um, the granularity of the titanium dioxide is 1-50 um, the granularity of the superfine zinc-carrying antibacterial agent is 20-500 nm, the granularity of the cast stone powder is 1-20 um, the granularity of the antioxidant expandable graphite powder is 200-800 nm, the granularity of the sepiolite powder is 1-80 um, the granularity of the nano ceramic plasticizing wood powder is 200-600 nm, the granularity of the tourmaline powder is 2-30 um, and the granularity of the nano crystal hydroxyapatite powder is 50-800 nm.
The preparation method of the superfine zinc-loaded antibacterial agent in the efficient antibacterial coating prepared by adopting the superfine zinc-loaded antibacterial agent comprises the following steps:
The superfine zinc-carrying antibacterial agent is prepared by the following method:
(1) Mixing 1-80g bentonite and 5-900ml dimethyl sulfoxide solution with mass percent of 0.5-80%, and stirring for 12-72h;
(2) Washing the raw materials in the step (1) twice by pure water and once by ethanol, and drying the raw materials at 38-80 ℃;
(3) Mixing and uniformly stirring the dried bentonite, dimethyl sulfoxide compound and sodium dodecyl sulfate in a mass ratio of 200:1-1:1, adding 5-65ml zinc-ammonia solution with concentration of 0.001-0.5mol/L, and stirring again for 12-36 hours;
(4) NaOH was added in a molar ratio of 0 to zinc salt: 1-6:1 continuously stirring uniformly.
(5) Drying at 60-850 deg.C for 10min-24 hr, taking out, mechanically grinding in a Fulisz high-energy ball mill, grinding with steel ball with diameter of 15mm at 30-500 rpm for 2-36 hr; the weight ratio of ball to powder is about 18:1;
(6) Annealing the ground powder in an alumina crucible for 0.5-6 hours at a temperature between 80 and 600 ℃; obtaining the superfine zinc-carrying antibacterial agent.
A preparation method of an efficient antibacterial coating prepared by adopting an ultrafine zinc-loaded antibacterial agent comprises the following steps:
the antibacterial coating is prepared by mixing the following components in parts by weight:
(1) Weighing 52-80 parts of film forming substances, and mechanically stirring for 5-40min to obtain a mixed emulsion system;
(2) 23-42 parts of functional filler are weighed and placed in a V-shaped mixer to be mixed for 10min-2h at the mixing speed of 15-50r/min, then the functional filler is added into a mixed emulsion system to be stirred for 10-30min, and the mixture is put into a QZM conical mill to be ground to 50-200 meshes under the normal temperature and normal pressure condition, and dispersed for 0.5-1.5h, thus obtaining the efficient antibacterial coating.
Compared with the prior art, the scheme of the invention has the advantages that:
(1) Broad-spectrum antibacterial and excellent antibacterial effect. Has excellent antibacterial effect on bacteria, fungi and moulds such as escherichia coli, staphylococcus aureus, pneumobacillus, pseudomonas aeruginosa, candida albicans, aspergillus niger, fusarium and the like. According to the GB/T21866-2008 standard requirements, the antibacterial rate of the antibacterial coating prepared by the invention is more than 99.99 percent.
(2) The antibacterial effect is durable and stable. The mechanism of sterilization of the present disclosure is not the same as conventional antimicrobial coatings, which themselves are not consumed while killing bacteria. Under neutral or acidic conditions, K+ is carried out of the bacterial cells, and H+ is carried into the bacterial cells; under alkaline conditions, K+ or Mg2+ is taken out of the bacterial cells and Na+ is taken into the bacterial cells. By eliminating the ionic gradient of bacteria to gain nutrients, cells eventually lose nutrients and die.
(3) The indoor air can be purified. The tourmaline powder with a specific form is added, far infrared rays and anions can be released for a long time, peculiar smell and various harmful substances in the air are removed, and particularly, the tourmaline powder has a good adsorption effect on free formaldehyde, toluene and the like in the air and is decomposed into nontoxic molecules for removal.
Detailed Description
The present application will be described and illustrated with reference to the following examples in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. All other embodiments, which can be made by a person of ordinary skill in the art based on the embodiments provided by the present application without making any inventive effort, are intended to fall within the scope of the present application.
Moreover, it should be appreciated that while such a development effort might be complex and lengthy, it would nevertheless be a routine undertaking of design, fabrication, or manufacture for those of ordinary skill having the benefit of this disclosure, and thus should not be construed as having the benefit of this disclosure.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is to be expressly and implicitly understood by those of ordinary skill in the art that the described embodiments of the application can be combined with other embodiments without conflict.
The invention provides a high-efficiency antibacterial coating prepared by adopting an ultrafine zinc-loaded antibacterial agent, which is prepared by mixing the following components in parts by weight:
52-80 parts of film forming material and 23-42 parts of functional filler.
The film forming material comprises the following components in parts by weight: 28 to 56 parts of water-based acrylic resin, 18.5 to 41 parts of water, 0.8 to 1.2 parts of film forming auxiliary agent, 0.3 to 0.5 part of surfactant and 0.2 to 0.4 part of defoaming agent.
The functional filler comprises the following components in parts by weight: 8.5 to 14.5 parts of perlite powder, 3.5 to 7.5 parts of titanium dioxide, 0.5 to 7.5 parts of superfine zinc-carrying antibacterial agent, 1.5 to3 parts of cast stone powder, 0.5 to 2.5 parts of antioxidant expandable graphite powder, 3 to 6 parts of sepiolite powder, 0.6 to 1.2 parts of nano ceramic plasticizing wood powder, 1.8 to 4.2 parts of tourmaline powder and 0.6 to 1.2 parts of nanocrystalline hydroxyapatite powder.
The aqueous acrylic resin is aqueous hydroxyl acrylic resin.
The film forming auxiliary agent is one or more of dicyclopentadienyl oxyethyl acrylate, 3-ethoxypropionic acid ethyl ester, propylene glycol phenyl ether and dipropylene glycol monomethyl ether.
The surfactant is one or more of dioctyl sodium sulfosuccinate, sulfated castor oil, cetostearyl glucoside and glyceryl monostearate.
The defoamer is one or more of end-group esterified polyether derivatives, polydimethylsiloxane and GPES type polyether.
The granularity of the perlite powder is 5-20 um, the granularity of the titanium dioxide is 1-50 um, the granularity of the superfine zinc-carrying antibacterial agent is 20-500 nm, the granularity of the cast stone powder is 1-20 um, the granularity of the antioxidant expandable graphite powder is 200-800 nm, the granularity of the sepiolite powder is 1-80 um, the granularity of the nano ceramic plasticizing wood powder is 200-600 nm, the granularity of the tourmaline powder is 2-30 um, and the granularity of the nano crystal hydroxyapatite powder is 50-800 nm.
The superfine zinc-carrying antibacterial agent is prepared by the following method: mixing 1-80g bentonite and 5-900ml dimethyl sulfoxide solution with mass percent of 0.5-80% and stirring for 12-72h. Then washing twice with pure water and once with ethanol, and drying at 38-80deg.C. Mixing and uniformly stirring the dried bentonite/dimethyl sulfoxide compound and sodium dodecyl sulfate in a mass ratio of 200:1-1:1, adding 5-65ml zinc ammonia solution with the concentration of 0.001-0.5mol/L, and stirring for 12-36 hours again. NaOH was added in a molar ratio of 0 to zinc salt: 1-6:1 continuously stirring uniformly. Drying at 60-850 deg.C for 10min-24 hr, taking out, mechanically grinding in a Fulisz high-energy ball mill, and grinding at 30-500 rpm for 2-36 hr with steel ball with diameter of 15 mm. The weight ratio of ball to powder was about 18:1. The milled powder was annealed in an alumina crucible for 0.5-6 hours at a temperature between 80 and 600 ℃. Obtaining the superfine zinc-carrying antibacterial agent.
The antibacterial coating is prepared by mixing the following components in parts by weight: (1) Weighing 52-80 parts of film forming substances, and mechanically stirring for 5-40min to obtain a mixed emulsion system; (2) 23-42 parts of functional filler are weighed and placed in a V-shaped mixer to be mixed for 10min-2h at the mixing speed of 15-50r/min, then the functional filler is added into a mixed emulsion system to be stirred for 10-30min, and the mixture is put into a QZM conical mill to be ground to 50-200 meshes under the normal temperature and normal pressure condition, and dispersed for 0.5-1.5h, thus obtaining the efficient antibacterial coating.
Example 1
Firstly, preparing an ultrafine zinc-loaded antibacterial agent:
1g of bentonite and 5ml of dimethyl sulfoxide solution with the mass percentage of 0.5% are mixed and stirred for 12h. Then, washing twice with pure water and once with ethanol, and drying at 40 ℃. The dried bentonite/dimethyl sulfoxide compound and sodium dodecyl sulfate are mixed according to the mass ratio of 200:1 and stirred uniformly, 5ml of zinc-ammonia solution with the concentration of 0.001 mol/L is added, and the mixture is stirred for 12 hours again. NaOH was added in a molar ratio to zinc salt of 0.5:1 continuously stirring uniformly. Drying at 60deg.C for 10min, taking out, mechanically grinding in a Folitz high energy ball mill, and grinding for 2 hr at 30 rpm with steel ball with diameter of 15 mm. The weight ratio of ball to powder was about 18:1. The milled powder was annealed in an alumina crucible for 0.5 hours at 80 ℃. Obtaining the superfine zinc-carrying antibacterial agent.
Secondly, preparing the high-efficiency antibacterial paint:
(1) 28 parts of water-borne acrylic resin, 18.5 parts of water, 0.8 part of film forming additive, 0.3 part of surfactant and 0.2 part of defoamer are weighed and mechanically stirred for 5min to obtain a mixed emulsion system;
(2) 8.5 parts of perlite powder, 3.5 parts of titanium dioxide, 0.5 part of superfine zinc-loaded antibacterial agent, 1.5 parts of cast stone powder, 0.5 part of antioxidant expandable graphite powder, 3 parts of sepiolite powder, 0.6 part of nano ceramic plasticizing wood powder, 1.8 parts of tourmaline powder and 0.6 part of nano crystal hydroxyapatite powder are weighed, placed in a V-shaped mixer and mixed for 10min, the mixing speed is 15r/min, then added into a mixed emulsion system, stirred for 10min, placed in a QZM conical mill under normal temperature and normal pressure, ground to 50 meshes, and dispersed for 0.5h, thus obtaining the efficient antibacterial coating.
Example two
Firstly, preparing an ultrafine zinc-loaded antibacterial agent:
80g of bentonite and 900ml of dimethyl sulfoxide solution with the mass percentage of 80% are mixed and stirred for 72h. Then, washing twice with pure water and once with ethanol, and drying at 80 ℃. The dried bentonite/dimethyl sulfoxide compound and sodium dodecyl sulfate are mixed according to the mass ratio of 1:1 and stirred uniformly, 65ml of zinc-ammonia solution with the concentration of 0.5mol/L is added, and the mixture is stirred for 36 hours again. NaOH was added in a molar ratio to zinc salt of 6:1 continuously stirring uniformly. Drying at 850 deg.C for 24 hr, taking out, mechanically grinding in a Folitz high-energy ball mill, and grinding at 500 rpm for 36 hr with steel ball with diameter of 15 mm. The weight ratio of ball to powder was about 18:1. The milled powder was annealed in an alumina crucible for 6 hours at 600 ℃. Obtaining the superfine zinc-carrying antibacterial agent.
Secondly, preparing the high-efficiency antibacterial paint:
(1) 56 parts of water-borne acrylic resin, 41 parts of water, 1.2 parts of film forming additive, 0.5 part of surfactant and 0.4 part of defoamer are weighed and mechanically stirred for 15min to obtain a mixed emulsion system;
(2) 14.5 parts of perlite powder, 7.5 parts of titanium dioxide, 7.5 parts of superfine zinc-loaded antibacterial agent, 3 parts of cast stone powder, 2.5 parts of antioxidant expandable graphite powder, 6 parts of sepiolite powder, 1.2 parts of nano ceramic plasticizing wood powder, 4.2 parts of tourmaline powder and 1.2 parts of nano crystal hydroxyapatite powder are weighed and placed in a V-shaped mixer to be mixed for 20min, the mixing rotating speed is 35r/min, then the mixture is added into a mixed emulsion system, and the mixture is put into a QZM conical mill to be ground to 200 meshes under normal temperature and normal pressure, and the mixture is dispersed for 1.5h, so that the efficient antibacterial coating can be obtained.
Example III
Firstly, preparing an ultrafine zinc-loaded antibacterial agent:
30g of bentonite and 100ml of dimethyl sulfoxide solution with the mass percentage of 20% are mixed and stirred for 24 hours. Then, washing twice with pure water and once with ethanol, and drying at 60 ℃. The dried bentonite/dimethyl sulfoxide compound and sodium dodecyl sulfate are mixed according to the mass ratio of 20:1 and stirred uniformly, 35ml of zinc ammonia solution with the concentration of 0.05mol/L is added, and the mixture is stirred for 24 hours again. NaOH was added in a molar ratio to zinc salt of 3:1 continuously stirring uniformly. Drying at 450deg.C for 6 hr, taking out, mechanically grinding in a Folitz high energy ball mill, and grinding with steel ball with diameter of 15mm at 200 rpm for 12 hr. The weight ratio of ball to powder was about 18:1. The milled powder was annealed in an alumina crucible for 2 hours at 300 ℃. Obtaining the superfine zinc-carrying antibacterial agent.
Secondly, preparing the high-efficiency antibacterial paint:
(1) 45 parts of water-borne acrylic resin, 32 parts of water, 1.1 parts of film forming additive, 0.4 part of surfactant and 0.3 part of defoamer are weighed and mechanically stirred for 40min to obtain a mixed emulsion system;
(2) 12 parts of perlite powder, 6 parts of titanium dioxide, 2.5 parts of superfine zinc-loaded antibacterial agent, 2.5 parts of cast stone powder, 1.5 parts of antioxidant expandable graphite powder, 5 parts of sepiolite powder, 0.8 part of nano ceramic plasticizing wood powder, 2.7 parts of tourmaline powder and 0.9 part of nano crystal hydroxyapatite powder are weighed and placed in a V-shaped mixer to be mixed for 30min, the mixing rotating speed is 45r/min, then the mixture is added into a mixed emulsion system, and the mixture is put into a QZM conical mill to be ground to 100 meshes under normal temperature and normal pressure, and the mixture is dispersed for 1h, so that the efficient antibacterial coating can be obtained.
Table 1 shows the performance of examples 1, 2 and 3 using the antibacterial paint of the present invention in comparison with the conventional antibacterial paint 1 and 2 on the market.
The antibacterial rate of the antibacterial paint is tested according to GB/T21866-2008 standard.
TABLE 1
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (8)
1. An efficient antibacterial coating prepared by adopting an ultrafine zinc-loaded antibacterial agent is characterized in that: the composite material comprises the following raw materials in parts by weight: 52-80 parts of film forming substances and 23-42 parts of functional fillers;
the film forming material comprises the following components in parts by weight:
28 to 56 parts of water-based acrylic resin, 18.5 to 41 parts of water, 0.8 to 1.2 parts of film forming auxiliary agent, 0.3 to 0.5 part of surfactant and 0.2 to 0.4 part of defoaming agent;
the functional filler comprises the following components in parts by weight:
8.5 to 14.5 parts of perlite powder, 3.5 to 7.5 parts of titanium dioxide, 0.5 to 7.5 parts of superfine zinc-carrying antibacterial agent, 1.5 to 3 parts of cast stone powder, 0.5 to 2.5 parts of antioxidant expandable graphite powder, 3 to 6 parts of sepiolite powder, 0.6 to 1.2 parts of nano ceramic plasticizing wood powder, 1.8 to 4.2 parts of tourmaline powder and 0.6 to 1.2 parts of nanocrystalline hydroxyapatite powder.
2. The high-efficiency antibacterial paint prepared by adopting the superfine zinc-loaded antibacterial agent according to claim 1, which is characterized in that: the aqueous acrylic resin is aqueous hydroxyl acrylic resin.
3. The high-efficiency antibacterial paint prepared by adopting the superfine zinc-loaded antibacterial agent according to claim 1, which is characterized in that:
the film forming auxiliary agent is one or more of dicyclopentadienyl oxyethyl acrylate, 3-ethoxypropionic acid ethyl ester, propylene glycol phenyl ether and dipropylene glycol monomethyl ether.
4. The high-efficiency antibacterial paint prepared by adopting the superfine zinc-loaded antibacterial agent according to claim 1, which is characterized in that:
The surfactant is one or more of dioctyl sodium sulfosuccinate, sulfated castor oil, cetostearyl glucoside and glyceryl monostearate.
5. The high-efficiency antibacterial paint prepared by adopting the superfine zinc-loaded antibacterial agent according to claim 1, which is characterized in that:
The defoamer is one or more of end-group esterified polyether derivatives, polydimethylsiloxane and GPES type polyether.
6. The high-efficiency antibacterial paint prepared by adopting the superfine zinc-loaded antibacterial agent according to claim 1, which is characterized in that:
The granularity of the perlite powder is 5-20 um, the granularity of the titanium dioxide is 1-50 um, the granularity of the superfine zinc-carrying antibacterial agent is 20-500 nm, the granularity of the cast stone powder is 1-20 um, the granularity of the antioxidant expandable graphite powder is 200-800 nm, the granularity of the sepiolite is 1-80 um, the granularity of the nano ceramic plasticizing wood powder is 200-600 nm, the granularity of the tourmaline powder is 2-30 um, and the granularity of the nanocrystalline hydroxyapatite powder is 50-800 nm.
7. A method for preparing an ultra-fine zinc-loaded antibacterial agent in a high-efficiency antibacterial coating prepared by adopting the ultra-fine zinc-loaded antibacterial agent according to the claims 1-6, which is characterized in that:
The superfine zinc-carrying antibacterial agent is prepared by the following method:
(1) Mixing 1-80g bentonite and 5-900ml dimethyl sulfoxide solution with mass percent of 0.5-80%, and stirring for 12-72h;
(2) Washing the raw materials in the step (1) twice by pure water and once by ethanol, and drying the raw materials at 38-80 ℃;
(3) Mixing and uniformly stirring the dried bentonite, dimethyl sulfoxide compound and sodium dodecyl sulfate in a mass ratio of 200:1-1:1, adding 5-65ml zinc-ammonia solution with concentration of 0.001-0.5mol/L, and stirring again for 12-36 hours;
(4) NaOH was added in a molar ratio of 0 to zinc salt: 1-6:1, continuing to stir uniformly;
(5) Drying at 60-850 deg.C for 10min-24 hr, taking out, mechanically grinding in a Fulisz high-energy ball mill, grinding with steel ball with diameter of 15mm at 30-500 rpm for 2-36 hr; the weight ratio of ball to powder is about 18:1;
(6) Annealing the ground powder in an alumina crucible for 0.5-6 hours at a temperature between 80 and 600 ℃; obtaining the superfine zinc-carrying antibacterial agent.
8. A method for preparing an efficient antibacterial coating prepared by adopting an ultrafine zinc-loaded antibacterial agent according to the claims 1-6, which is characterized by comprising the following steps:
the antibacterial coating is prepared by mixing the following components in parts by weight:
(1) Weighing 52-80 parts of film forming substances, and mechanically stirring for 5-40min to obtain a mixed emulsion system;
(2) 23-42 parts of functional filler are weighed and placed in a V-shaped mixer to be mixed for 10min-2h at the mixing speed of 15-50r/min, then the functional filler is added into a mixed emulsion system to be stirred for 10-30min, and the mixture is put into a QZM conical mill to be ground to 50-200 meshes under the normal temperature and normal pressure condition, and dispersed for 0.5-1.5h, thus obtaining the efficient antibacterial coating.
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