CN112063325A - Surface antibacterial film and preparation method thereof - Google Patents

Surface antibacterial film and preparation method thereof Download PDF

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Publication number
CN112063325A
CN112063325A CN202010909992.5A CN202010909992A CN112063325A CN 112063325 A CN112063325 A CN 112063325A CN 202010909992 A CN202010909992 A CN 202010909992A CN 112063325 A CN112063325 A CN 112063325A
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layer
antibacterial
coating
substrate
coating layer
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CN202010909992.5A
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孟鸿
何俊鹏
姚露
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Peking University Shenzhen Graduate School
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Peking University Shenzhen Graduate School
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Priority to CN202010909992.5A priority Critical patent/CN112063325A/en
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Abstract

The invention provides a surface antibacterial film and a preparation method thereof, wherein the surface antibacterial film is used for covering the surface of an object and comprises the following components: an antimicrobial layer; the first adhesive layer is arranged on the surface of the antibacterial layer; the isolation layer is arranged on the surface of the first bonding layer. The invention can quickly reform the surface of any object to be contacted into the antibacterial surface by sticking or covering the surface antibacterial film on the surface of the object, and the long-term antibacterial property ensures that people can quickly sterilize after contacting the surface of the object and can contact the next human body safely and aseptically. At the same time, the rapid equipping of surfaces with antimicrobial surfaces also allows to maintain personal hygiene, reducing bacterial and viral infections, such as: mobile phone screen, keyboard, etc.

Description

Surface antibacterial film and preparation method thereof
Technical Field
The invention relates to the technical field of antibacterial materials, in particular to a surface antibacterial film and a preparation method thereof.
Background
Since 2019, Covid-19 virus has abused worldwide and mainly infects by contacting with flying foam, and the world uses zero contact as much as possible to block the infection chain. However, some contacts are inevitable: such as items in public spaces; handrails for subways, high-speed railways, buses; handles for doors, windows; a public touch screen; an elevator button; non-automatic toilet and faucet switches in public toilets; shared bicycle handles, etc. Thus, it is imperative to modify the surfaces to be contacted to antimicrobial surfaces, and no product is currently available for this purpose.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a surface antibacterial film and a preparation method thereof, and aims to solve the problem that the existing product cannot modify the surface to be contacted into an antibacterial surface.
The technical scheme of the invention is as follows:
a surface antibacterial film for covering the surface of an object, comprising:
an antimicrobial layer;
the first adhesive layer is arranged on the surface of the antibacterial layer;
the isolation layer is arranged on the surface of the first bonding layer.
Optionally, the method further comprises:
the decorative layer is arranged between the antibacterial layer and the first bonding layer;
and the second adhesive layer is arranged between the antibacterial layer and the decorative layer.
Optionally, the method further comprises:
the hydrophobic layer is arranged between the decorative layer and the first bonding layer;
and the third bonding layer is arranged between the decorative layer and the hydrophobic layer.
Optionally, the antibacterial layer includes a substrate and an antibacterial coating formed on the surface of the substrate, and the first adhesive layer is attached to the substrate.
Optionally, the antimicrobial coating comprises at least one of a quaternary ammonium salt coating, an antimicrobial zeolite coating, a fatty acid salt coating, a deacetylated chitin coating, a nitrogen-containing heterocyclic compound coating, a pyrethroid coating, a phenolic coating, a guanidine coating, a natural product coating, an organosulfur biocide coating, an organophosphorus coating, an arsenic biocide coating, a substituted benzene biocide coating, an azole biocide coating, an antibiotic biocide coating, a built biocide coating, and a derivative coating of the above coating ingredients.
Optionally, the antimicrobial coating is a multi-site quaternary ammonium coating.
The invention relates to a preparation method of a surface antibacterial film, which is used for covering the surface of an object, and comprises the following steps:
providing an antibacterial layer;
covering a first bonding layer on the antibacterial layer;
and adhering an isolation layer on the first adhesive layer to obtain the surface antibacterial film.
Optionally, the preparation method of the antibacterial layer comprises:
preparing an antibacterial agent solution;
providing a substrate, covering a layer of the antibacterial agent solution on the substrate by a physical method, and drying to obtain the antibacterial agent coating.
Optionally, the substrate is covered with a layer of the antimicrobial solution by spraying, spin coating or dipping.
Optionally, the preparation method of the antibacterial layer comprises:
modifying the substrate by a chemical method, and reacting the modified substrate with an antibacterial agent to enable the antibacterial agent to be combined on the substrate to form an antibacterial agent coating;
or, the antibacterial agent is modified by a chemical method, and the modified antibacterial agent reacts with the substrate, so that the antibacterial agent is combined with the substrate to form the antibacterial agent coating.
Has the advantages that: the invention can quickly reform the surface of any object to be contacted into the antibacterial surface by sticking or covering the surface antibacterial film on the surface of the object, and the long-term antibacterial property ensures that people can quickly sterilize after contacting the surface of the object and can contact the next human body safely and aseptically. At the same time, the rapid equipping of surfaces with antimicrobial surfaces also allows to maintain personal hygiene, reducing bacterial and viral infections, such as: mobile phone screen, keyboard, etc.
Drawings
Fig. 1 is a schematic structural diagram of a surface antibacterial film according to an embodiment of the present invention.
Fig. 2 is another schematic structural diagram of a surface antibacterial film according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a surface antibacterial film according to an embodiment of the present invention.
Fig. 4 is a schematic flow chart of the preparation of the multi-site quaternary ammonium salt antibacterial material in the specific embodiment 5 of the invention.
FIG. 5 is a schematic diagram showing the structural formula of CG in example 5 according to the present invention.
Detailed Description
The invention provides a surface antibacterial film and a preparation method thereof, and the invention is further explained in detail below in order to make the purpose, technical scheme and effect of the invention clearer and more clear. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a surface antibacterial film, which is used for covering the surface of an object, and as shown in figure 1, the surface antibacterial film comprises:
an antimicrobial layer;
the first adhesive layer is arranged on the surface of the antibacterial layer;
the isolation layer is arranged on the surface of the first bonding layer.
When the surface antibacterial film is used, the isolation layer of the surface antibacterial film is torn off, the first adhesive layer is exposed, and the first adhesive layer is adhered or covered on the surface of an object needing to be contacted, so that the surface of the object needing to be contacted can be quickly transformed into an antibacterial surface, and an antibacterial effect is achieved.
The existing antibacterial surface needs to be doped with antibacterial components in the production process of specific objects, and the surface antibacterial film is adhered or covered on the surface of the object, so that the surface of any object needing to be contacted can be quickly transformed into the antibacterial surface, and the long-term antibacterial performance ensures that people can quickly sterilize after contacting the surface of the object and can contact the next human body safely and aseptically. At the same time, the rapid equipping of surfaces with antimicrobial surfaces also allows to maintain personal hygiene, reducing bacterial and viral infections, such as: mobile phone screen, keyboard, etc.
In one embodiment, as shown in fig. 2, the surface antibacterial film further includes:
the decorative layer is arranged between the antibacterial layer and the first bonding layer;
and the second adhesive layer is arranged between the antibacterial layer and the decorative layer. Wherein the decorative layer material can be, but is not limited to, dye or essence.
In one embodiment, as shown in fig. 3, the surface antibacterial film further includes:
the hydrophobic layer is arranged between the decorative layer and the first bonding layer;
and the third bonding layer is arranged between the decorative layer and the hydrophobic layer. Wherein the hydrophobic layer material is common hydrophobic material.
In one embodiment, the antibacterial layer comprises a substrate and an antibacterial agent coating formed on the surface of the substrate, the first bonding layer is attached to the substrate, and even when the surface antibacterial film is used, the antibacterial agent coating is located on the outermost layer of an object to exert an antibacterial effect.
In one embodiment, the antimicrobial coating includes, but is not limited to, at least one of a bacteriostatic coating, a bacteriocidal coating, an antimicrobial coating, a disinfectant coating, a mildewcide coating, an antiseptic coating, and a bacteriostatic coating, among others. Specifically, the antimicrobial agent coating includes, but is not limited to, a quaternary ammonium salt coating, an antimicrobial zeolite coating, a fatty acid salt coating, a deacetylated chitin coating, a nitrogen-containing heterocyclic compound coating, a pyrethroid coating, a phenol coating, a guanidine coating, a natural product (e.g., ultrafine chitosan powder, chitin, chitosan, etc.) coating, an organosulfur fungicide (e.g., amobam, sodium difenoate, ziram, zineb, mancozeb, thiram, etc.) coating, an organophosphorus coating, an arsenic fungicide (e.g., fenoxan, edifenphos, fosetyl, tolfent, phenthoate), a substituted benzene fungicide (e.g., thiophanate-methyl, chlorothalonil, fenaminosulf, quintozene, etc.) coating, an azole fungicide (e.g., triadimefon, carbendazim, hymexazol, benomyl, thiabendazole) coating, an antibiotic fungicide (e.g., jinggangmycin, a, Polyoxin, kasugamycin, streptomycin for agricultural use, antimycosin 120, etc.), a coating of a built fungicide (e.g., methiocarb, dichlofluanid, thiram, alum M8, metalaxyl copper, DT fungicide, metalaxyl manganese zinc, fenfurazolin manganese zinc, thiophanate methyl manganese zinc, eurycol milk powder, metalaxyl-thiram wettable powder, etc.), a coating of another fungicide (e.g., metalaxyl, sclerotium, procymidone, prochloraz, chlorhydantoin, folpet, captan, tefurazol, trichlorfon, rhizoctonia, formalin, high-fat film, chlorotoxin, propamocarb, quinclorac, dimethomorph manganese zinc, etc.), and a derivative of the above components or at least one of other small molecule, oligocompound and polymer material coatings having an antibacterial effect, a bacteriostatic effect or a bacteriostatic effect.
The existing antibacterial component is mainly silver, and the antibacterial component in the embodiment is an organic antibacterial material which has the advantages of no toxicity and low cost. Although products using organic antibacterial materials as antibacterial components exist, the products have antibacterial effects by doping the organic antibacterial materials in the preparation process of the products. In the embodiment, the surface antibacterial film containing the organic antibacterial material is provided, and the surface of the object can be quickly modified into the antibacterial surface by covering the surface antibacterial film on the surface of the object to be contacted. Compared with the prior art, the antibacterial effect of the embodiment is better, the usage amount of the organic antibacterial material is less, and the cost is lower.
In one embodiment, the antimicrobial coating is a multi-site quaternary ammonium coating. Compared with single-site and double-site quaternary ammonium salts, the multi-site quaternary ammonium salt of the embodiment is used as an organic antibacterial material, and also has the functions of adsorbing gas and deodorizing.
In one embodiment, the substrate includes, but is not limited to, at least one of a textile, paper, paint substrate, plastic substrate, oligomer substrate, polymer substrate, ceramic substrate, metal substrate, glass substrate, and the like.
In one embodiment, the first adhesive layer includes both a substrate and no substrate. Wherein, the base material is cotton paper, PET (polyethylene terephthalate), PVC (polyvinyl chloride) film, non-woven fabric, foam, acrylic foam, polyimide film and the like, and elastic pressure-sensitive adhesive or resin pressure-sensitive adhesive, acrylic pressure-sensitive adhesive and the like are uniformly coated on the two surfaces of the base material. The non-base material is directly coated with elastomer type pressure-sensitive adhesive or resin type pressure-sensitive adhesive, acrylic pressure-sensitive adhesive and the like.
In one embodiment, the release layer may be, but is not limited to, a release paper or release paper, and the like.
In one embodiment, the second adhesive layer is a transparent non-setting adhesive. For example: taking cotton paper, PET, PVC film, non-woven fabric, foam, acrylic foam, polyimide film and the like as base materials, and uniformly coating elastic pressure-sensitive adhesive or resin pressure-sensitive adhesive, acrylic pressure-sensitive adhesive and the like on two sides; or directly coated with elastomer type pressure sensitive adhesive or resin type pressure sensitive adhesive, acrylic pressure sensitive adhesive, etc.
In one embodiment, the third adhesive layer is a transparent non-setting adhesive. For example: taking cotton paper, PET, PVC film, non-woven fabric, foam, acrylic foam, polyimide film and the like as base materials, and uniformly coating elastic pressure-sensitive adhesive or resin pressure-sensitive adhesive, acrylic pressure-sensitive adhesive and the like on two sides; or directly coated with elastomer type pressure sensitive adhesive or resin type pressure sensitive adhesive, acrylic pressure sensitive adhesive, etc.
The embodiment of the invention also provides a preparation method of the surface antibacterial film, wherein the surface antibacterial film is used for covering the surface of an object, and the preparation method comprises the following steps:
providing an antibacterial layer;
covering a first bonding layer on the antibacterial layer;
and adhering an isolation layer on the first adhesive layer to obtain the surface antibacterial film.
In the embodiment of the invention, the preparation methods of the antibacterial layer include two methods: physical preparation and chemical preparation. Wherein, physical preparation means that there is a distance of more than 0.3nm between the antimicrobial molecules and the substrate molecules after treatment. Chemical preparation means that the distance between the antibacterial agent molecule and the substrate molecule after treatment is less than or equal to 0.3 nm.
In one embodiment, the method of physically preparing the antibiotic layer includes:
preparing an antibacterial agent solution;
providing a substrate, covering a layer of the antibacterial agent solution on the substrate by a physical method, and drying to obtain the antibacterial agent coating.
In one embodiment, the antimicrobial solution is applied to the substrate by spraying, spin coating, dipping, or the like.
In one embodiment, the method of chemically preparing the antibiotic layer includes:
modifying the substrate by a chemical method, and reacting the modified substrate with an antibacterial agent to enable the antibacterial agent to be combined on the substrate to form an antibacterial agent coating;
or, the antibacterial agent is modified by a chemical method, and the modified antibacterial agent reacts with the substrate, so that the antibacterial agent is combined with the substrate to form the antibacterial agent coating.
In other words, the substrate or molecules of the antimicrobial agent are chemically modified to link them together by chemical reaction, the substrate and molecules of the antimicrobial agent are linked together using chemical intermediates, or the substrate surface is chemically modified to have a chemical structure similar to that of the antimicrobial agent.
The invention is further illustrated by the following specific examples.
Example 1
Dissolving dithiocyano-methane antibacterial agent in absolute ethyl alcohol (mass fraction is 50% -0.001%), so as to obtain antibacterial agent solution; soaking paper or textile in an antibacterial agent solution, drying, combining with a polyimide film with pressure-sensitive adhesive coated on both sides, and combining with release paper to obtain the surface antibacterial film with the structure shown in figure 1. The surface antibacterial film can be used for the surface of an object which is replaced for a short time, such as an elevator button and the like.
Example 2
After the surface of a textile or a plastic substrate is treated by ozone, the textile or the plastic substrate reacts with 1, 4-diphenol for 1 hour under an acidic condition, then the textile or the plastic substrate is taken out and placed in a nitrogen-containing heterocyclic polymer solution with hydroxyl or amino for continuous reaction for 1 hour. Taking out, cleaning with ethanol, oven drying, and bonding with decorative layer of jasmine essence with transparent non-setting adhesive. And finally, coating the acrylate pressure-sensitive adhesive on the decorative layer and then adhering release paper to obtain the surface antibacterial film with the structure shown in the figure 2.
Example 3
After the textile or the plastic substrate is subjected to surface treatment by plasma, the textile or the plastic substrate is taken out after being reacted with oxalyl chloride (or solid phosgene) in dry tetrahydrofuran for 1 hour, and the mixture is placed in a quaternary ammonium salt polymer solution with hydroxyl or amino for further reaction for 1 hour. Taking out, cleaning with ethanol, oven drying, bonding with dyed cloth with transparent adhesive, and bonding with hydrophobic layer with transparent adhesive. And finally, coating the acrylate pressure-sensitive adhesive on the hydrophobic layer and then adhering release paper to obtain the surface antibacterial film with the structure shown in the figure 3.
Example 4
Mixing and heating dimethyl octadecyl [ 3-trimethoxysilylpropyl ] ammonium chloride and thermoplastic polyurethane elastomer rubber (TPU) or silica gel, and performing reverse molding on colloid to obtain the surface antibacterial film only consisting of one antibacterial layer. It can be used for long-term protection, such as keyboard film.
Example 5
Referring to fig. 4, the preparation steps of the multi-site quaternary ammonium salt antibacterial agent material are as follows:
in a 5 liter beaker, 20g of the plasma-treated nonwoven fabric was reacted with 0.1mol to 20mol of CG by heating (30 ℃ to 150 ℃) in a solvent for 1 hour. After the nonwoven fabric was taken out and washed with a dry solvent, the resultant was put into a 5-liter beaker, and 0.01g to 20g of PEI was added thereto and reacted in a solvent under heating (30 ℃ to 150 ℃) for 1 hour. After the nonwoven fabric is taken out and washed with a dry solvent, the nonwoven fabric is put into a 5L beaker, and 0.1mol to 100mol of long-chain halogenated hydrocarbon and 0.1mol to 100mol of alkali are added, and then the mixture is heated (30 ℃ to 150 ℃) in the solvent to react for 4 to 48 hours.
Wherein, CG can be any one of the structural formulas shown in figure 5 but is not limited to the structural formulas. PEI is polyetherimide with the molecular mass of 300 to 3 ten thousand, and the structural formula is shown as follows:
Figure BDA0002662914790000081
the solvent may be, but is not limited to, tetrahydrofuran, dimethylformamide, toluene, n-butanol, and the like, singly or in combination. The long-chain halogenated hydrocarbon is chloride, bromide or iodide with carbon chain carbon number of 4-20.
In summary, the invention provides a surface antibacterial film and a preparation method thereof. The surface antibacterial film is an antibacterial material which can be stuck on the surface of any object. The existing antibacterial surface needs to be doped with antibacterial components in the production process of specific objects, and the surface antibacterial film is adhered or covered on the surface of the object, so that the surface of any object needing to be contacted can be quickly transformed into the antibacterial surface, and the long-term antibacterial performance ensures that people can quickly sterilize after contacting the surface of the object and can contact the next human body safely and aseptically. At the same time, the rapid equipping of surfaces with antimicrobial surfaces also allows to maintain personal hygiene, reducing bacterial and viral infections, such as: mobile phone screen, keyboard, etc.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.

Claims (10)

1. A surface antimicrobial film for covering a surface of an object, comprising:
an antimicrobial layer;
the first adhesive layer is arranged on the surface of the antibacterial layer;
the isolation layer is arranged on the surface of the first bonding layer.
2. A surface antibacterial film according to claim 1, characterized by further comprising:
the decorative layer is arranged between the antibacterial layer and the first bonding layer;
and the second adhesive layer is arranged between the antibacterial layer and the decorative layer.
3. A surface antibacterial film according to claim 2, characterized by further comprising:
the hydrophobic layer is arranged between the decorative layer and the first bonding layer;
and the third bonding layer is arranged between the decorative layer and the hydrophobic layer.
4. The surface antibacterial film according to claim 1, wherein the antibacterial layer comprises a substrate and an antibacterial agent coating formed on the surface of the substrate, and the first adhesive layer is attached to the substrate.
5. The surface antimicrobial film according to claim 4, wherein the antimicrobial coating layer comprises at least one of a quaternary ammonium salt coating layer, an antimicrobial zeolite coating layer, a fatty acid salt coating layer, a deacetylated chitin coating layer, a nitrogen-containing heterocyclic compound coating layer, a pyrethroid coating layer, a phenol coating layer, a guanidine coating layer, a natural product coating layer, an organic sulfur fungicide coating layer, an organic phosphorus coating layer, an arsenic fungicide coating layer, a substituted benzene fungicide coating layer, an azole fungicide coating layer, an antibiotic fungicide coating layer, a built-up fungicide coating layer, and a derivative coating layer of the above coating composition.
6. A surface anti-bacterial film according to claim 5, characterized in that said anti-bacterial coating is a multi-site quaternary ammonium coating.
7. A method for preparing a surface antibacterial film as claimed in any one of claims 1 to 6, which is used for covering the surface of an object, comprising the steps of:
providing an antibacterial layer;
covering a first bonding layer on the antibacterial layer;
and adhering an isolation layer on the first adhesive layer to obtain the surface antibacterial film.
8. The method for preparing a surface antibacterial film according to claim 7, wherein the method for preparing the antibacterial layer comprises:
preparing an antibacterial agent solution;
providing a substrate, covering a layer of the antibacterial agent solution on the substrate by a physical method, and drying to obtain the antibacterial agent coating.
9. The method for preparing a surface antibacterial film according to claim 8, characterized in that the substrate is covered with a layer of the antibacterial solution by spraying, spin coating or dipping.
10. The method for preparing a surface antibacterial film according to claim 7, wherein the method for preparing the antibacterial layer comprises:
modifying the substrate by a chemical method, and reacting the modified substrate with an antibacterial agent to enable the antibacterial agent to be combined on the substrate to form an antibacterial agent coating;
or, the antibacterial agent is modified by a chemical method, and the modified antibacterial agent reacts with the substrate, so that the antibacterial agent is combined with the substrate to form the antibacterial agent coating.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114752116A (en) * 2022-04-12 2022-07-15 福建农林大学 Antibacterial and antiviral elevator button diaphragm based on polyoxometallate composite carrageenan and preparation method and application thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114752116A (en) * 2022-04-12 2022-07-15 福建农林大学 Antibacterial and antiviral elevator button diaphragm based on polyoxometallate composite carrageenan and preparation method and application thereof

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