CN113462251A - Antibacterial coating, preparation method thereof and antibacterial coating film - Google Patents
Antibacterial coating, preparation method thereof and antibacterial coating film Download PDFInfo
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- CN113462251A CN113462251A CN202110901110.5A CN202110901110A CN113462251A CN 113462251 A CN113462251 A CN 113462251A CN 202110901110 A CN202110901110 A CN 202110901110A CN 113462251 A CN113462251 A CN 113462251A
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 97
- 238000000576 coating method Methods 0.000 title claims abstract description 72
- 239000011248 coating agent Substances 0.000 title claims abstract description 71
- 238000002360 preparation method Methods 0.000 title claims description 11
- 239000012986 chain transfer agent Substances 0.000 claims abstract description 18
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims abstract description 11
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims abstract description 11
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims abstract description 11
- IAXXETNIOYFMLW-COPLHBTASA-N [(1s,3s,4s)-4,7,7-trimethyl-3-bicyclo[2.2.1]heptanyl] 2-methylprop-2-enoate Chemical compound C1C[C@]2(C)[C@@H](OC(=O)C(=C)C)C[C@H]1C2(C)C IAXXETNIOYFMLW-COPLHBTASA-N 0.000 claims abstract description 11
- 229940119545 isobornyl methacrylate Drugs 0.000 claims abstract description 11
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims abstract description 11
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000000839 emulsion Substances 0.000 claims description 68
- 239000003995 emulsifying agent Substances 0.000 claims description 41
- 239000007864 aqueous solution Substances 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 23
- 239000003999 initiator Substances 0.000 claims description 17
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 13
- 239000010410 layer Substances 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 239000012748 slip agent Substances 0.000 claims description 12
- 239000008234 soft water Substances 0.000 claims description 12
- XKFDVLUHBRJZQF-UHFFFAOYSA-N 2-(3-aminopropyl)-1-(diaminomethylidene)guanidine Chemical compound NCCCNC(=N)NC(N)=N XKFDVLUHBRJZQF-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 239000003973 paint Substances 0.000 claims description 10
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical group CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 claims description 9
- 239000002518 antifoaming agent Substances 0.000 claims description 9
- 239000000539 dimer Substances 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 5
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 5
- MNCGMVDMOKPCSQ-UHFFFAOYSA-M sodium;2-phenylethenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C=CC1=CC=CC=C1 MNCGMVDMOKPCSQ-UHFFFAOYSA-M 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000000845 anti-microbial effect Effects 0.000 claims description 4
- 239000011247 coating layer Substances 0.000 claims description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical group [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims description 3
- 239000004203 carnauba wax Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 239000013530 defoamer Substances 0.000 claims 1
- -1 aminopropyl biguanide Chemical compound 0.000 abstract description 10
- 229940123208 Biguanide Drugs 0.000 abstract description 9
- 241000894006 Bacteria Species 0.000 abstract description 3
- 244000052616 bacterial pathogen Species 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 241000700605 Viruses Species 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 31
- 239000000178 monomer Substances 0.000 description 22
- 238000006243 chemical reaction Methods 0.000 description 14
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000004321 preservation Methods 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 6
- 235000012239 silicon dioxide Nutrition 0.000 description 5
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000007759 kiss coating Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 3
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 241000711573 Coronaviridae Species 0.000 description 2
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 2
- 229920006233 biaxially oriented polyamide Polymers 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 125000002795 guanidino group Chemical group C(N)(=N)N* 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 150000004395 organic heterocyclic compounds Chemical class 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 206010059866 Drug resistance Diseases 0.000 description 1
- 238000006845 Michael addition reaction Methods 0.000 description 1
- 238000007112 amidation reaction Methods 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 239000004599 antimicrobial Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/003—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1802—C2-(meth)acrylate, e.g. ethyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1811—C10or C11-(Meth)acrylate, e.g. isodecyl (meth)acrylate, isobornyl (meth)acrylate or 2-naphthyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
- C08F265/06—Polymerisation of acrylate or methacrylate esters on to polymers thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups
- C08F8/32—Introducing nitrogen atoms or nitrogen-containing groups by reaction with amines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Plant Pathology (AREA)
- General Chemical & Material Sciences (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides an antibacterial coating, which is prepared from raw materials of isobornyl methacrylate, ethyl acrylate, n-butyl acrylate, methacrylic acid, 2-hydroxyethyl methacrylate, acrylonitrile, chain transfer agent, aminopropyl biguanide, anatase type nano titanium dioxide and the like. The invention provides an antibacterial coating film which can completely kill or inhibit bacteria and viruses so as to reduce the transmission of various germs through the outer package of products.
Description
Technical Field
The invention relates to the technical field of film materials, in particular to an antibacterial coating, a preparation method thereof and an antibacterial coating film.
Background
During the epidemic of new coronaviruses, new coronaviruses are frequently detected in imported cold chain outer packages, which causes the worry of consumers about the transmission of various germs on the outer packages of products.
Chinese patent publication No. CN108162528B provides a novel high-performance antibacterial antifogging film, which is prepared by adding an organic heterocyclic compound containing a bactericidal component and metal ions into a film to achieve a bactericidal effect. Chinese patent publication No. CN109370167B provides a dark brown antibacterial PET film and a preparation method thereof, and the invention uses nano silver as an antibacterial agent. In the film, the nano silver has the risk of being taken into the body after being contacted for a long time due to the heavy metal property of the nano silver, and the nano silver has toxicity to the liver after being taken into the body to a certain amount; the nano oxide can be sterilized only by light because the sterilization reaction is a photocatalytic reaction, and the nano oxide has the characteristic of small molecular weight, is easy to migrate in a film, and the sterilization special effect cannot be maintained for a long time; the organic heterocyclic compound is a medicine, and can cause drug resistance of microorganisms such as bacteria and the like after long-term use, so that the antibacterial effect of the microorganisms is influenced. Therefore, the antibacterial coating film which is safe and nontoxic to human bodies, strong in antibacterial capacity and wide in antibacterial range is of great significance.
Disclosure of Invention
The invention aims to provide an antibacterial coating, and an antibacterial coating film prepared from the antibacterial coating has the advantages of strong antibacterial capability and long antibacterial effect.
In view of the above, the present application provides an antibacterial coating, which is prepared from the following raw materials:
preferably, the initiator is one or more selected from potassium persulfate, ammonium persulfate and sodium persulfate, the emulsifier is a mixture of sodium dodecyl sulfate and sodium styrene sulfonate in a mass ratio of 1:1, and the defoaming agent is a mixture of sodium dodecyl sulfate and sodium styrene sulfonate in a mass ratio of 1: 2 of ethanol and octanol.
Preferably, the pH regulator is selected from ammonia water with a concentration of 28 wt%, the chain transfer agent is selected from alpha-methyl styrene linear dimer, the slip agent is selected from aqueous palm wax emulsion, and the anti-sticking agent is selected from one or two of silicon dioxide and glass beads.
Preferably, the solid content of the antibacterial coating is 15-35%.
Preferably, the content of the aminopropylbiguanide is 0.3-0.6 part by weight.
Preferably, the content of the anatase type nano titanium dioxide is 0.2-0.5 part by weight.
The application also provides a preparation method of the antibacterial coating, which comprises the following steps:
mixing 0.5-1.2 parts by weight of emulsifier and 125-225 parts by weight of soft water to obtain an emulsifier aqueous solution, adding 5-15 parts by weight of isobornyl methacrylate, 10-25 parts by weight of ethyl acrylate, 10-25 parts by weight of n-butyl acrylate and 0.2-0.5 part by weight of chain transfer agent into the emulsifier aqueous solution, heating after mixing, adding 0.1-0.3 part by weight of initiator, and reacting to obtain a core structure emulsion;
mixing 0.5-1.3 parts by weight of emulsifier and 125-225 parts by weight of soft water to obtain an emulsifier aqueous solution, adding 10-30 parts by weight of methacrylic acid, 15-25 parts by weight of 2-hydroxyethyl methacrylate, 10-20 parts by weight of acrylonitrile, 0.1-0.3 part by weight of initiator and 0.2-0.5 part by weight of chain transfer agent into the emulsifier aqueous solution, and mixing to obtain a shell structure emulsion;
adding the shell structure emulsion into the core structure emulsion, adding 0.1-1.0 part by weight of aminopropylbiguanide, reacting, adding 2-5 parts by weight of defoaming agent and 1-5 parts by weight of pH regulator, cooling, adding 1-5 parts by weight of slip agent, 0.2-3.0 parts by weight of anti-sticking agent and 0.1-0.5 part by weight of anatase type nano titanium dioxide, and obtaining the antibacterial coating.
Preferably, in the process of adding the shell structure emulsion into the core structure emulsion, the temperature of the emulsion is 75-85 ℃, the adding time is 1.5-2 h, and the temperature is reduced to 70-75 ℃ after the shell structure emulsion is added; the reaction time is 4-6 h.
The application also provides an antibacterial coating film, which consists of a substrate layer, a first antibacterial coating arranged on the upper surface of the substrate layer and a second antibacterial coating arranged on the lower surface of the substrate layer; the paint of the first antibacterial coating and the second antibacterial coating is the antibacterial paint or the antibacterial paint prepared by the preparation method.
Preferably, the thickness of the substrate layer is 10 to 90 μm, and the thicknesses of the first antibacterial coating layer and the second antibacterial coating layer are independently 0.5 to 3.0 μm.
The application provides an antibacterial coating, raw materials of the antibacterial coating comprise isobornyl methacrylate, ethyl acrylate, n-butyl acrylate, methacrylic acid, 2-hydroxyethyl methacrylate, acrylonitrile, chain transfer, aminopropyl biguanide, anatase type nano titanium dioxide and the like, a side chain containing a guanidino group is grafted on the surface of an acrylic emulsion formed by the raw materials through amidation reaction and Michael addition reaction, and hydrophilic anatase type nano titanium dioxide is added, so that a dual antibacterial effect is achieved. Therefore, the antibacterial coating film provided by the application achieves the best antibacterial effect by adding the antibacterial substance into the surface coating, and the guanidine-based substance grafted on the acrylic emulsion coating is connected through chemical bonds, so that the guanidine-based substance cannot be transferred along with the time lapse, thereby ensuring the durability of the antibacterial effect.
Detailed Description
For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the invention, and not to limit the scope of the claims.
In view of the technical problems in the prior art that the antibacterial film has a non-long sterilization effect, a poor antibacterial effect and is harmful to the human body, the application provides an antibacterial coating and an antibacterial coating film, which can completely kill or inhibit bacteria and viruses, thereby reducing the transmission of various germs through the outer package of the product. Specifically, the embodiment of the invention discloses an antibacterial coating, which is prepared from the following raw materials:
in the antibacterial paint provided by the application, methacrylic acid is used for providing carboxyl to react with aminopropyl biguanide, isobornyl methacrylate, ethyl acrylate, n-butyl acrylate, 2-hydroxyethyl methacrylate and acrylonitrile are all conventional acrylic esters, and the glass transition temperature of a coating formed by the paint is adjusted by acrylic esters with different glass transition temperatures; the aminopropyl biguanide and the hydrophilic anatase type nano titanium dioxide have antibacterial effect, and the antibacterial effect of the antibacterial coating is realized.
In the present application, the isobornyl methacrylate is contained in an amount of 5 to 15 parts by weight, and more specifically, the isobornyl methacrylate is contained in an amount of 8 to 13 parts by weight.
The content of the ethyl acrylate is 10-25 parts by weight, and more specifically, the content of the ethyl acrylate is 15-23 parts by weight.
The content of the methacrylic acid is 10 to 30 parts by weight, more specifically 15 to 25 parts by weight.
The content of the 2-hydroxyethyl methacrylate is 15-25 parts by weight, and more specifically, the content of the 2-hydroxyethyl methacrylate is 20-23 parts by weight.
The content of the acrylonitrile is 10 to 20 parts by weight, and more specifically, the content of the acrylonitrile is 15 to 18 parts by weight.
The initiator is specifically selected from one or more of potassium persulfate, ammonium persulfate and sodium persulfate, and the content of the initiator is 0.2-0.6 part by weight, and more specifically the content of the initiator is 0.2-0.4 part by weight.
The emulsifier is specifically selected from a mixture of sodium dodecyl sulfate and sodium styrene sulfonate in a mass ratio of 1:1, and the content of the emulsifier is 1.0-2.5 parts by weight, more specifically, the content of the emulsifier is 1.3-2.1 parts by weight.
The defoaming agent is specifically selected from the following components in a mass ratio of 1: 2 in an amount of 2 to 5 parts by weight, and more specifically, 2 to 4 parts by weight.
The pH regulator is specifically selected from ammonia water with the concentration of 28 wt%, and the content of the pH regulator is 1-5 parts by weight, and more specifically, the content of the pH regulator is 2-4.5 parts by weight.
The chain transfer agent is specifically selected from alpha-methyl styrene linear dimer, and the content of the chain transfer agent is 0.4-1.0 part by weight, more specifically, the content of the chain transfer agent is 0.45-0.75 part by weight.
The slip agent is specifically selected from water-based palm wax emulsion, and the content of the slip agent is 1-5 parts by weight, more specifically, the content of the slip agent is 2-4.5 parts by weight.
The anti-sticking agent is specifically selected from one or two of silicon dioxide and glass beads, and the content of the anti-sticking agent is 0.2-3.0 parts by weight, and more specifically, the content of the anti-sticking agent is 0.25-1.5 parts by weight.
The content of the aminopropylbiguanide is 0.2 to 1.0 part by weight, more specifically, the content of the aminopropylbiguanide is 0.25 to 0.75 part by weight, and more specifically, the content of the aminopropylbiguanide is 0.3 to 0.6 part by weight. When the content of the aminopropyl biguanide is too low, excessive guanidino is consumed in the reaction, the antibacterial group is insufficient in expression, and the antibacterial effect is not outstanding; the content is too high, the carboxyl in the methacrylic acid on the surface layer is limited, and after the reaction is finished, redundant aminopropyl biguanide is remained and can seep out after the coating, so that the residual VOC exceeds the standard.
The content of the anatase type nano titanium dioxide is 0.1-0.5 part by weight, and more specifically, the content of the anatase type nano titanium dioxide is 0.15-0.40 part by weight.
The application further provides a preparation method of the antibacterial coating, which comprises the following steps:
mixing 0.5-1.2 parts by weight of emulsifier and 125-225 parts by weight of soft water to obtain an emulsifier aqueous solution, adding 5-15 parts by weight of isobornyl methacrylate, 10-25 parts by weight of ethyl acrylate, 10-25 parts by weight of n-butyl acrylate and 0.2-0.5 part by weight of chain transfer agent into the emulsifier aqueous solution, heating after mixing, adding 0.1-0.3 part by weight of initiator, and reacting to obtain a core structure emulsion;
mixing 0.5-1.3 parts by weight of emulsifier and 125-225 parts by weight of soft water to obtain an emulsifier aqueous solution, adding 10-30 parts by weight of methacrylic acid, 15-25 parts by weight of 2-hydroxyethyl methacrylate, 10-20 parts by weight of acrylonitrile, 0.1-0.3 part by weight of initiator and 0.2-0.5 part by weight of chain transfer agent into the emulsifier aqueous solution, and mixing to obtain a shell structure emulsion;
adding the shell structure emulsion into the core structure emulsion, adding 0.2-1.0 part by weight of aminopropylbiguanide, reacting, adding 2-5 parts by weight of defoaming agent and 1-5 parts by weight of pH regulator, cooling, adding 1-5 parts by weight of slip agent, 0.2-3.0 parts by weight of anti-sticking agent and 0.1-0.5 part by weight of anatase type nano titanium dioxide, and obtaining the antibacterial coating.
According to the invention, in the process of preparing the core structure emulsion, the mixing time before the temperature rise is 0.5-1.0 h, and the stirring speed is 60-80 r/min; the temperature rise is carried out under the protection of nitrogen, the temperature rise is 75-85 ℃, and the reaction time is 1-1.5 h.
In the process of preparing the shell structure emulsion, the mixing time of all the raw materials is 0.5-1.0 h, and the stirring speed is 60-80 r/min.
According to the invention, the process for obtaining the antibacterial coating specifically comprises the following steps:
adding a shell structure monomer emulsion into the core structure emulsion by using a flow pump, and simultaneously keeping the temperature of the emulsion at 75-83 ℃ for 1.5-2 h;
after the addition is finished, cooling to 70-75 ℃, adding 0.1-1.0 part of aminopropylbiguanide into the emulsion, increasing the stirring speed to 100-120 r/min, and carrying out heat preservation reaction for 4-6 h;
after the reaction is finished, heating is finished, the emulsion is naturally cooled to a temperature below 45 ℃, 2-5 parts of defoaming agent and 1-5 parts of pH regulator are added, the pH value of the emulsion is adjusted to 7-11, and the emulsion is cooled to normal temperature;
adding 1-5 parts of a slip agent, 0.2-3 parts of an anti-sticking agent and 0.1-0.5 part of hydrophilic anatase type nano titanium dioxide into the emulsion, uniformly stirring, and filtering by using a 200-mesh filter screen to obtain the antibacterial acrylic emulsion used by the invention.
The application also provides an antibacterial coating film, which consists of a base material layer, a first antibacterial coating and a second antibacterial coating, wherein the first antibacterial coating is arranged on the upper surface of the base material layer, the second antibacterial coating is arranged on the lower surface of the base layer, and the first antibacterial coating and the coating of the second antibacterial coating adopt the scheme.
In the application, the substrate layer is specifically selected from a BOPP film, a BOPET film, a BOPA film or a BOPE film, the thickness of the substrate layer is 10-90 μm, and the thickness of the first antibacterial coating and the thickness of the second antibacterial coating are independently 0.5-3.0 μm.
The preparation method of the antibacterial coating film specifically comprises the following steps:
and (3) unreeling the substrate film, uniformly coating the emulsion on two sides of the substrate by adopting a reverse roll kiss coating mode, drying for 2-5 s at 90-110 ℃ in an oven, rolling, and curing for 1h at 38 ℃ to obtain the antibacterial coating film.
For further understanding of the present invention, the following examples are provided to illustrate the antibacterial coating material and the antibacterial coating film provided by the present invention, and the scope of the present invention is not limited by the following examples.
Example one
(1) Adding 0.8 part of emulsifier into 190 parts of soft water, stirring at normal temperature to obtain an emulsifier aqueous solution, then adding 15 parts of isobornyl methacrylate monomer, 15 parts of ethyl acrylate monomer, 15 parts of n-butyl acrylate monomer and 0.2 part of chain transfer agent alpha-methyl styrene linear dimer (AMSD) into the emulsifier aqueous solution, mixing and stirring for 0.5h, and controlling the stirring speed at 60 revolutions per minute;
(2) after mixing and stirring are finished, introducing nitrogen for protection, heating to 75 ℃, simultaneously adding 0.15 part of initiator sodium persulfate, and carrying out heat preservation reaction for 1 hour to prepare nuclear structure emulsion;
(3) adding 1.0 part of emulsifier into 230 parts of soft water in another container, stirring at normal temperature to obtain an emulsifier aqueous solution, then adding 10 parts of methacrylic acid monomer, 20 parts of methacrylic acid-2-hydroxyethyl ester monomer, 20 parts of acrylonitrile monomer, 0.15 part of initiator sodium persulfate and 0.3 part of chain transfer agent alpha-methyl styrene linear dimer (AMSD) into the emulsifier aqueous solution, mixing and stirring for 0.5h, and controlling the stirring speed at 60 r/min to obtain shell structure monomer emulsion;
(4) adding a shell structure monomer emulsion into the core structure emulsion by using a flow pump, and simultaneously keeping the temperature of the emulsion at 75 ℃ for 1.5 h;
(5) after the addition is finished, cooling to 73 ℃, adding 0.3 part of aminopropyl biguanide into the emulsion, increasing the stirring speed to 100 r/min, and carrying out heat preservation reaction for 4 hours;
(6) after the reaction is finished, naturally cooling the emulsion to below 45 ℃, adding 2 parts of defoaming agent and 2.0 parts of pH regulator, regulating the pH value of the emulsion to 7.5, and cooling to normal temperature;
(7) then adding 2 parts of slip agent, 0.3 part of anti-sticking agent synthetic silicon dioxide and 0.15 part of hydrophilic anatase type nano titanium dioxide, stirring uniformly, and filtering by using a 200-mesh filter screen to obtain an antibacterial acrylic emulsion with the solid content of 17%;
(8) unreeling a BOPP film with the thickness of 20 mu m, and uniformly coating the emulsion on the two sides of a base material by adopting a reverse roll kiss coating mode, wherein the gluing amount is ensured to be 4g/m2Drying the film for 3s at 105 ℃ in an oven, rolling the film, and curing the film for 24h at 38 ℃ to obtain the antibacterial coating film with the thickness of 20.5 mu m.
Example two
(1) Adding 1.0 part of emulsifier into 180 parts of soft water, stirring at normal temperature to obtain an emulsifier aqueous solution, then adding 13 parts of isobornyl methacrylate monomer, 17 parts of ethyl acrylate monomer, 10 parts of n-butyl acrylate monomer and 0.15 part of chain transfer agent alpha-methyl styrene linear dimer (AMSD) into the emulsifier aqueous solution, mixing and stirring for 0.75h, and controlling the stirring speed at 60 revolutions per minute;
(2) after mixing and stirring are finished, introducing nitrogen for protection, heating to 78 ℃, simultaneously adding 0.15 part of initiator ammonium persulfate, and carrying out heat preservation reaction for 1.5 hours to prepare nuclear structure emulsion;
(3) adding 1.3 parts of emulsifier into 170 parts of soft water in another container, stirring at normal temperature to obtain an emulsifier aqueous solution, then adding 15 parts of methacrylic acid monomer, 18 parts of methacrylic acid-2-hydroxyethyl monomer, 15 parts of acrylonitrile monomer, 0.3 part of initiator ammonium persulfate and 0.3 part of chain transfer agent alpha-methyl styrene linear dimer (AMSD) into the emulsifier aqueous solution, mixing and stirring for 0.5h, and controlling the stirring speed at 60 r/min to obtain a shell structure monomer emulsion;
(4) adding the shell structure monomer emulsion into the core structure emulsion by using a flow pump, and simultaneously keeping the temperature of the emulsion at 80 ℃ for 1.0 h;
(5) after the addition is finished, cooling to 73 ℃, adding 0.25 part of aminopropyl biguanide into the emulsion, increasing the stirring speed to 100 r/min, and carrying out heat preservation reaction for 4 hours;
(6) after the reaction is finished, naturally cooling the emulsion to below 45 ℃, adding 3 parts of defoaming agent and 2.5 parts of pH regulator, regulating the pH value of the emulsion to 8.5, and cooling to normal temperature;
(7) then adding 1.5 parts of slip agent, 0.25 part of anti-sticking agent synthetic silicon dioxide and 0.15 part of hydrophilic anatase type nano titanium dioxide, stirring uniformly, and filtering by using a 200-mesh filter screen to obtain an antibacterial acrylic emulsion with the solid content of 20%;
(8) unreeling a 25 mu m BOPP film, and uniformly coating the emulsion on the two sides of a base material by adopting a reverse roll kiss coating mode, wherein the gluing amount is ensured to be 4g/m2Drying the film for 3s at 110 ℃, rolling the film, and curing the film for 24h at 38 ℃ to obtain the antibacterial coating film with the thickness of 25.6 mu m.
EXAMPLE III
(1) Adding 0.9 part of emulsifier into 150 parts of soft water, stirring at normal temperature to obtain an emulsifier aqueous solution, then adding 13 parts of isobornyl methacrylate monomer, 15 parts of ethyl acrylate monomer, 15 parts of n-butyl acrylate monomer and 0.2 part of chain transfer agent alpha-methyl styrene linear dimer (AMSD) into the emulsifier aqueous solution, mixing and stirring for 0.5h, and controlling the stirring speed at 80 revolutions per minute;
(2) after mixing and stirring are finished, introducing nitrogen for protection, heating to 82 ℃, simultaneously adding 0.15 part of initiator ammonium persulfate, and carrying out heat preservation reaction for 1.2 hours to prepare nuclear structure emulsion;
(3) adding 1.2 parts of emulsifier into 180 parts of soft water in another container, stirring at normal temperature to obtain an emulsifier aqueous solution, then adding 15 parts of methacrylic acid monomer, 22 parts of methacrylic acid-2-hydroxyethyl monomer, 20 parts of acrylonitrile monomer, 0.2 part of initiator ammonium persulfate and 0.25 part of chain transfer agent alpha-methyl styrene linear dimer (AMSD) into the emulsifier aqueous solution, mixing and stirring for 0.75h, and controlling the stirring speed at 75 r/min to obtain a shell structure monomer emulsion;
(4) adding the shell structure monomer emulsion into the core structure emulsion by using a flow pump, and simultaneously keeping the temperature of the emulsion at 80 ℃ for 2.0 h;
(5) after the addition is finished, cooling to 73 ℃, adding 0.30 part of aminopropyl biguanide into the emulsion, increasing the stirring speed to 100 r/min, and carrying out heat preservation reaction for 5 hours;
(6) after the reaction is finished, naturally cooling the emulsion to below 45 ℃, adding 4 parts of defoaming agent and 4 parts of pH regulator, regulating the pH value of the emulsion to 7.8, and cooling to normal temperature;
(7) then adding 1.5 parts of slip agent, 0.4 part of anti-sticking agent synthetic silicon dioxide and 0.2 part of hydrophilic anatase type nano titanium dioxide, stirring uniformly, and filtering by using a 200-mesh filter screen to obtain an antibacterial acrylic emulsion with the solid content of 21.3 percent;
(8) unreeling a BOPA film with the thickness of 15 mu m, and uniformly coating the emulsion on the two sides of the base material by adopting a reverse roll kiss coating mode, wherein the gluing amount is 3g/m2Drying the film for 4s at 95 ℃ in an oven, rolling the film, and curing the film for 24h at 38 ℃ to obtain the antibacterial coating film with the thickness of 15.6 mu m.
Comparative example
The preparation method is the same as example 3, except that: the addition amount of the antimicrobial aminopropylbiguanide was reduced from 0.3 parts to 0.1 parts to obtain an antimicrobial coating film for comparative use.
TABLE 1 data table of the properties of the antibacterial acrylic emulsion and antibacterial coating film prepared in example
Remarking: the antibacterial performance is tested according to the requirements of national standard GB/T21866-2008 'antibacterial coating (paint film) antibacterial property determination method and antibacterial effect'.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An antibacterial coating is prepared from the following raw materials:
2. the antibacterial coating according to claim 1, wherein the initiator is one or more selected from potassium persulfate, ammonium persulfate and sodium persulfate, the emulsifier is a mixture of sodium dodecyl sulfate and sodium styrene sulfonate in a mass ratio of 1:1, and the defoamer is a mixture of sodium dodecyl sulfate and sodium styrene sulfonate in a mass ratio of 1: 2 of ethanol and octanol.
3. The antibacterial paint according to claim 1, wherein the pH regulator is selected from ammonia water with a concentration of 28 wt%, the chain transfer agent is selected from alpha-methyl styrene linear dimer, the slip agent is selected from aqueous palm wax emulsion, and the anti-sticking agent is selected from one or two of silica and glass beads.
4. The antibacterial coating according to claim 1, wherein the solid content of the antibacterial coating is 15-35%.
5. The antibacterial paint according to claim 1, wherein the aminopropylbiguanide is contained in an amount of 0.3 to 0.6 part by weight.
6. The antibacterial paint according to claim 1, wherein the anatase type nano titanium dioxide is contained in an amount of 0.2 to 0.5 part by weight.
7. The method of preparing the antibacterial paint according to claim 1, comprising the steps of:
mixing 0.5-1.2 parts by weight of emulsifier and 125-225 parts by weight of soft water to obtain an emulsifier aqueous solution, adding 5-15 parts by weight of isobornyl methacrylate, 10-25 parts by weight of ethyl acrylate, 10-25 parts by weight of n-butyl acrylate and 0.2-0.5 part by weight of chain transfer agent into the emulsifier aqueous solution, heating after mixing, adding 0.1-0.3 part by weight of initiator, and reacting to obtain a core structure emulsion;
mixing 0.5-1.3 parts by weight of emulsifier and 125-225 parts by weight of soft water to obtain an emulsifier aqueous solution, adding 10-30 parts by weight of methacrylic acid, 15-25 parts by weight of 2-hydroxyethyl methacrylate, 10-20 parts by weight of acrylonitrile, 0.1-0.3 part by weight of initiator and 0.2-0.5 part by weight of chain transfer agent into the emulsifier aqueous solution, and mixing to obtain a shell structure emulsion;
adding the shell structure emulsion into the core structure emulsion, adding 0.1-1.0 part by weight of aminopropylbiguanide, reacting, adding 2-5 parts by weight of defoaming agent and 1-5 parts by weight of pH regulator, cooling, adding 1-5 parts by weight of slip agent, 0.2-3.0 parts by weight of anti-sticking agent and 0.1-0.5 part by weight of anatase type nano titanium dioxide, and obtaining the antibacterial coating.
8. The preparation method of claim 7, wherein the temperature of the emulsion is 75-85 ℃ and the adding time is 1.5-2 h during the process of adding the shell structure emulsion into the core structure emulsion, and the temperature is reduced to 70-75 ℃ after the shell structure emulsion is added; the reaction time is 4-6 h.
9. An antibacterial coating film consists of a base material layer, a first antibacterial coating layer arranged on the upper surface of the base material layer and a second antibacterial coating layer arranged on the lower surface of the base material layer; the coating of the first antibacterial coating and the second antibacterial coating is the antibacterial coating of any one of claims 1 to 6 or the antibacterial coating prepared by the preparation method of any one of claims 7 to 8.
10. The antimicrobial coating film of claim 9, wherein the substrate layer has a thickness of 10 to 90 μm, and the first and second antimicrobial coatings independently have a thickness of 0.5 to 3.0 μm.
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