CN111363458A - Antibacterial antifouling scratch-proof protective film - Google Patents
Antibacterial antifouling scratch-proof protective film Download PDFInfo
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- CN111363458A CN111363458A CN202010300687.6A CN202010300687A CN111363458A CN 111363458 A CN111363458 A CN 111363458A CN 202010300687 A CN202010300687 A CN 202010300687A CN 111363458 A CN111363458 A CN 111363458A
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
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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
- 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
- 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
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1606—Antifouling paints; Underwater paints characterised by the anti-fouling agent
- C09D5/1637—Macromolecular compounds
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
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- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- 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
- C08K2003/2244—Oxides; Hydroxides of metals of zirconium
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- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses an antibacterial antifouling scratch-proof protective film, which is prepared by coating a film liquid on the surface of a substrate and drying, wherein the film liquid comprises the following raw materials in parts by weight: 40-90 parts of polyester acrylic monomer; 20-60 parts of polyurethane modified acrylic resin prepolymer; 2-20 parts of antibacterial dispersion liquid; 1-15 parts of antifouling auxiliary agent; 1-10 parts of photoinitiator; 30-70 parts of diluent; the antibacterial dispersion liquid is formed by silver-loaded nano silicon dioxide in water containing a dispersing agent. The antibacterial antifouling scratch-resistant protective film has excellent scratch-resistant performance, strength and antifouling performance, and has good antibacterial effect on escherichia coli and staphylococcus aureus; the protective film can be used for protecting screens or backshells of electronic products and has good market application prospect.
Description
Technical Field
The invention relates to the field of film materials, in particular to an antibacterial antifouling scratch-resistant protective film.
Background
Electronic products such as mobile phones and flat panels become indispensable articles in life, and the mobile phones are not separated from hands and become normal. A protective film is usually attached to the mobile phone, the flat screen or the housing to prevent the mobile phone from being physically scratched, and according to research studies, about 80 ten thousand bacteria exist on a pair of unwashed hands, and the mobile phone does not leave the hands, so that the spreading chance of harmful bacteria is increased, and cross infection is caused. However, many of the protective films of the prior art generally do not have antibacterial properties, which are not good for the health of users.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide an antibacterial, antifouling and scratch-proof protective film, which aims at overcoming the defects in the prior art.
In order to solve the technical problems, the invention adopts the technical scheme that: the antibacterial antifouling scratch-resistant protective film is prepared by coating a film liquid on the surface of a substrate and drying, wherein the film liquid comprises the following raw materials in parts by weight:
preferably, the antibacterial dispersion is a dispersion of silver-loaded nanosilica in water containing a dispersant.
Preferably, the membrane liquid also comprises 1-10 parts by weight of scratch-resistant auxiliary agent.
Preferably, the scratch-resistant auxiliary agent is a mixture of nano zirconia powder, nano silica powder and nano alumina powder.
Preferably, the membrane liquid also comprises 1-10 parts by weight of a curing agent.
Preferably, the curing agent is one or more of diaminocyclohexane, vinyl triamine and dimethylaminopropylamine.
Preferably, the antifouling auxiliary agent is a mixture of fluorosilicone oil, polydimethylsiloxane and polytetrafluoroethylene emulsion.
Preferably, the photoinitiator is one or more of α -hydroxyalkyl benzophenone, benzoin dimethyl ether, trimethyl benzoyl phenyl ethyl phosphonate, methyl benzoyl formate, bis benzoyl phenyl phosphine oxide and isopropyl thioxanthone.
Preferably, the diluent comprises one or more of isopropanol, ethylene glycol ethyl ether, propylene glycol methyl ether.
Preferably, the preparation method of the antibacterial dispersion comprises the following steps:
1) adding nano silicon dioxide and a dispersing agent into water to form a suspension;
2) mixing AgNO3Mixing with ammonia water to form silver-ammonia complex solution;
3) mixing the suspension with the silver-ammonia complex solution, adding a glucose aqueous solution, stirring, centrifuging, washing with water, dehydrating, curing and grinding to obtain silver-loaded nano silicon dioxide powder;
4) and adding the silver-loaded nano silicon dioxide powder and a dispersing agent into water to obtain the antibacterial dispersion liquid.
Preferably, the method for preparing the protective film comprises the following steps:
1) preparing an antibacterial dispersion;
2) preparing membrane liquid: adding the diluent, the polyester acrylic monomer and the polyurethane modified acrylic resin prepolymer into a reaction vessel, and stirring for 1-3h at 60-115 ℃; cooling to 45-65 ℃, then adding the antibacterial dispersion liquid, the antifouling auxiliary agent, the photoinitiator and the curing agent into a reaction vessel, stirring for 1.5-5h, and cooling to below 40 ℃ to obtain a membrane liquid;
3) and coating the membrane liquid on the surface of a base material, and drying to obtain the antibacterial antifouling scratch-proof protective membrane.
The invention has the beneficial effects that: the antibacterial antifouling scratch-resistant protective film has excellent scratch-resistant performance, strength and antifouling performance, and has good antibacterial effect on escherichia coli and staphylococcus aureus; the protective film can be used for protecting screens or backshells of electronic products and has good market application prospect.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
The antibacterial, antifouling and scratch-resistant protective film is prepared by coating a film liquid on the surface of a substrate and drying, wherein the film liquid comprises the following raw materials in parts by weight:
the antibacterial dispersion liquid is formed by dispersing silver-loaded nano silicon dioxide in water containing a dispersing agent. The silver-loaded nano silicon dioxide has excellent antibacterial performance, and the silver is combined on the nano silicon dioxide, so that on one hand, the stability of the silver can be improved, and the defect of unstable ions can be overcome; on the other hand, the nano silicon dioxide with large surface area is loaded with silver, so that the release amount of silver ions can be improved, and the sterilizing capability of the nano silicon dioxide is greatly improved.
In one embodiment, the antimicrobial dispersion is prepared by a method comprising the steps of:
1) adding nano silicon dioxide and a dispersing agent into water to form a suspension;
2) mixing AgNO3Mixing with ammonia water to form silver-ammonia complex solution;
3) mixing the suspension with the silver-ammonia complex solution, adding a glucose aqueous solution, stirring, centrifuging, washing with water, dehydrating, curing and grinding to obtain silver-loaded nano silicon dioxide powder;
4) adding the silver-loaded nano silicon dioxide powder and the dispersing agent into water to obtain the antibacterial dispersion liquid. Wherein the dispersant is polycarboxylate dispersant.
Wherein, the polyester acrylic monomer has excellent flexibility, very low film shrinkage and excellent adhesive force; the addition of the polyurethane modified acrylic resin prepolymer can improve the strength, the high toughness and the weather resistance; the two are compounded to use, so that the obtained film has good mechanical properties.
Wherein the membrane liquid also comprises 1-10 parts by weight of scratch-resistant auxiliary agent. The scratch-resistant auxiliary agent is a mixture of nano zirconia powder, nano silicon dioxide powder and nano alumina powder. The nano zirconia powder can obviously improve the mechanical strength of the material and enhance the rigidity of the protective film; the nano silicon dioxide powder can improve rigidity, smoothness and brightness and improve scratch resistance; the nano aluminum oxide can improve the modulus and the scratch resistance; the nano-sized material does not affect its gloss or very little, and also does not lose its flexibility. The nano zirconia powder, the nano silicon dioxide powder and the nano alumina powder are compounded and added to achieve a synergistic enhancement effect, so that the scratch resistance, the strength and the surface smoothness of the protective film are obviously improved.
Further, the membrane liquid also comprises 1-10 parts by weight of a curing agent. The curing agent is one or more of diaminocyclohexane, vinyl triamine and dimethylamino propylamine.
Wherein the antifouling auxiliary agent is a mixture of fluorosilicone oil, polydimethylsiloxane and polytetrafluoroethylene emulsion. The fluorosilicone oil can improve hydrophobicity and corrosion resistance; the polydimethylsiloxane has excellent hydrophobic moisture resistance, good light transmission and chemical stability; the polytetrafluoroethylene emulsion can promote the dispersion of each component, improve the strength and improve the surface smoothness of the membrane. The fluorosilicone oil, the polydimethylsiloxane and the polytetrafluoroethylene emulsion are compounded and added to achieve a synergistic enhancement effect, so that the protective film has good antifouling performance and chemical stability.
Wherein the photoinitiator is one or more of α -hydroxyalkyl benzophenone, benzoin dimethyl ether, trimethyl benzoyl phenyl ethyl phosphonate, methyl benzoyl formate, bis benzoyl phenyl phosphine oxide and isopropyl thioxanthone.
Wherein the diluent comprises one or more of isopropanol, ethylene glycol ethyl ether and propylene glycol methyl ether.
In one embodiment, there is also provided a method for preparing the protective film, including the steps of:
1) preparing an antibacterial dispersion according to the above method;
2) preparing membrane liquid: adding a diluent, a polyester acrylic monomer and a polyurethane modified acrylic resin prepolymer into a reaction vessel, and stirring for 1-3h at 60-115 ℃; cooling to 45-65 ℃, then adding the antibacterial dispersion liquid, the antifouling auxiliary agent, the photoinitiator and the curing agent into a reaction vessel, stirring for 1.5-5h, and cooling to below 40 ℃ to obtain a membrane liquid;
3) and coating the film liquid on the surface of a base material, and drying to obtain the antibacterial antifouling scratch-proof protective film.
The protective film can be applied to screen protection or rear shell protection of electronic products, and the protective film is formed by coating the film liquid on the surface of the product, and the thickness of the protective film is controlled to be 2-5 um.
More specific examples and comparative examples are provided below to further illustrate the invention.
Example 1
The antibacterial antifouling scratch-resistant protective film is prepared by coating a film liquid on the surface of a substrate and drying, wherein the film liquid comprises the following raw materials in parts by weight:
the antibacterial dispersion liquid is formed by dispersing silver-loaded nano silicon dioxide in water containing a dispersing agent.
The antifouling auxiliary agent is a mixture of fluorosilicone oil, polydimethylsiloxane and polytetrafluoroethylene emulsion.
The photoinitiator is benzoin dimethyl ether.
The diluent comprises isopropyl alcohol.
The scratch-resistant auxiliary agent is a mixture of nano zirconia powder, nano silicon dioxide powder and nano alumina powder.
The curing agent is diaminocyclohexane.
The preparation method of the antibacterial dispersion comprises the following steps:
1) adding nano silicon dioxide and a dispersing agent into water to form a suspension;
2) mixing AgNO3 with ammonia water to form a silver-ammonia complex solution;
3) mixing the suspension with the silver-ammonia complex solution, adding a glucose aqueous solution, stirring, centrifuging, washing with water, dehydrating, curing and grinding to obtain silver-loaded nano silicon dioxide powder;
4) adding the silver-loaded nano silicon dioxide powder and the dispersing agent into water to obtain the antibacterial dispersion liquid. Wherein the dispersant is polycarboxylate dispersant.
The preparation method of the protective film comprises the following steps:
1) preparing an antibacterial dispersion according to the above method;
2) preparing membrane liquid: adding a diluent, a polyester acrylic monomer and a polyurethane modified acrylic resin prepolymer into a reaction vessel, and stirring for 3 hours at 85 ℃; cooling to 45 ℃, adding the antibacterial dispersion liquid, the antifouling auxiliary agent, the photoinitiator and the curing agent into a reaction vessel, stirring for 3 hours, and cooling to below 40 ℃ to obtain a membrane liquid;
3) coating the membrane liquid on the surface of a substrate, and drying to obtain the antibacterial antifouling scratch-proof protective membrane, wherein the thickness of the protective membrane is controlled to be 4 um.
Example 2
The difference between the embodiment 2 and the embodiment 1 is only the component content of the membrane liquid, specifically:
the film liquid comprises the following raw materials in parts by weight:
the antibacterial dispersion liquid is formed by dispersing silver-loaded nano silicon dioxide in water containing a dispersing agent.
The antifouling auxiliary agent is a mixture of fluorosilicone oil, polydimethylsiloxane and polytetrafluoroethylene emulsion.
The photoinitiator is benzoin dimethyl ether.
The diluent comprises isopropyl alcohol.
The scratch-resistant auxiliary agent is a mixture of nano zirconia powder, nano silicon dioxide powder and nano alumina powder.
The curing agent is diaminocyclohexane.
Example 3
The difference between the embodiment 3 and the embodiment 1 is only the component content of the membrane liquid, specifically:
the film liquid comprises the following raw materials in parts by weight:
comparative example 1
The only difference from example 1 is that: the film liquid does not contain polyurethane modified acrylic resin prepolymer, and the weight of polyester acrylic monomer is 100 parts.
Comparative example 2
The only difference from example 1 is that: the antibacterial dispersion is a dispersion of silver powder in water containing a dispersant.
Comparative example 3
The only difference from example 1 is that: the film liquid does not comprise a scratch resistant auxiliary agent.
Comparative example 4
The only difference from example 1 is that: the scratch-resistant auxiliary agent only comprises nano zirconia powder.
Comparative example 5
The only difference from example 1 is that: the scratch-resistant auxiliary agent only comprises nano silicon dioxide powder.
Comparative example 6
The only difference from example 1 is that: the scratch-resistant auxiliary agent only comprises nano alumina powder.
Comparative example 7
The only difference from example 1 is that: and the film liquid does not contain an antifouling auxiliary agent.
Comparative example 8
The only difference from example 1 is that: the anti-fouling auxiliary agent does not comprise polytetrafluoroethylene emulsion.
Performance testing
Coating the surface of a substrate with the film liquid prepared in the examples 1-3 and the comparative examples 1-8, curing and drying to obtain a protective film layer, controlling the thickness of the film layer to be 4um, and then carrying out the following performance tests on the protective film:
the test items included the following:
1. contact angle test: JYSP-360 type contact angle measuring instrument;
2. adhesion force: lattice method
3. Pencil hardness:
the test was carried out according to ASTM D3363-2005 "Standard test method for measuring coating hardness by Pencil test method", with a YASUDA pencil hardness tester, a load of 750g, and a pencil hardness test;
4. antibacterial property:
anti-escherichia coli, anti-staphylococcus aureus, using the standard: ISO 22196: 2011;
5. and (4) testing the scratch resistance of the steel wool, wherein the scratch resistance is 1kg 2500 times, and whether the steel wool is scratched or not is observed.
The test results are shown in table 1 below:
table 1: performance test result recording table
From the test results of examples 1 to 3 of the table above, the following conclusions can be drawn: the antibacterial antifouling scratch-resistant protective film obtained by the invention has excellent scratch-resistant performance, strength and antifouling performance, and has good antibacterial effect on escherichia coli and staphylococcus aureus.
From the results of comparing comparative example 1 with example 1, it can be seen that: the polyurethane modified acrylic resin prepolymer can improve the strength of the film.
From the results of comparing comparative example 2 with example 1, it can be seen that: the silver powder used as the antibacterial agent has the effect obviously lower than that of the silver-loaded nano silicon dioxide, and can embody the advantages of the silver-loaded nano silicon dioxide.
From the results of comparing comparative examples 3 to 6 with example 1, it can be seen that: the scratch-resistant auxiliary agent has an obvious effect on improving the scratch-resistant performance, and the effect of the scratch-resistant auxiliary agent when the nano zirconia powder, the nano silica powder and the nano alumina powder are used independently is obviously inferior to the effect of the three in combination, so that the nano zirconia powder, the nano silica powder and the nano alumina powder play a role in coordination and enhancement in improving the scratch-resistant performance.
From the results of comparing comparative example 7 with example 1, it can be seen that: the antifouling auxiliary agent can remarkably increase the contact angle of the protective film, thereby improving the antifouling performance. The results of comparative example 8 further show that the polytetrafluoroethylene emulsion can promote the dispersion of the components and improve the antifouling property in the antifouling auxiliary agent.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application of the invention, and further modifications may readily be effected by those skilled in the art, so that the invention is not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.
Claims (10)
1. The antibacterial antifouling scratch-resistant protective film is characterized by being prepared by coating a film liquid on the surface of a substrate and drying, wherein the film liquid comprises the following raw materials in parts by weight:
2. the antibacterial, antifouling and scratch-resistant protective film according to claim 1, wherein the antibacterial dispersion is a dispersion of silver-loaded nanosilica in water containing a dispersant.
3. The antibacterial antifouling scratch-resistant protective film according to claim 2, wherein the film liquid further comprises 1-10 parts by weight of a scratch-resistant auxiliary.
4. The antibacterial antifouling scratch-resistant protective film according to claim 3, wherein the scratch-resistant auxiliary agent is a mixture of nano zirconia powder, nano silica powder and nano alumina powder.
5. The antibacterial antifouling scratch-resistant protective film according to claim 3, wherein the film liquid further comprises 1-10 parts by weight of a curing agent;
the curing agent is one or more of diaminocyclohexane, vinyl triamine and dimethylamino propylamine.
6. The antibacterial, antifouling and scratch-resistant protective film according to claim 5, wherein the antifouling auxiliary is a mixture of fluorosilicone oil, polydimethylsiloxane and polytetrafluoroethylene emulsion.
7. The protective film according to claim 6, wherein the photoinitiator is one or more selected from α -hydroxyalkylphenone, benzoin dimethyl ether, ethyl trimethylbenzoylphenylphosphonate, methyl benzoylformate, bisbenzoylphenylphosphine oxide, and isopropyl thioxanthone.
8. The anti-microbial, anti-fouling, scratch-resistant protective film according to claim 7, wherein the diluent comprises one or more of isopropyl alcohol, ethylene glycol ethyl ether, and propylene glycol methyl ether.
9. The protective film according to any one of claims 4 to 8, wherein the antibacterial dispersion is prepared by a method comprising the steps of:
1) adding nano silicon dioxide and a dispersing agent into water to form a suspension;
2) mixing AgNO3Mixing with ammonia water to form silver-ammonia complex solution;
3) mixing the suspension with the silver-ammonia complex solution, adding a glucose aqueous solution, stirring, centrifuging, washing with water, dehydrating, curing and grinding to obtain silver-loaded nano silicon dioxide powder;
4) and adding the silver-loaded nano silicon dioxide powder and a dispersing agent into water to obtain the antibacterial dispersion liquid.
10. The protective film according to claim 9, wherein the method for preparing the protective film comprises the following steps:
1) preparing an antibacterial dispersion;
2) preparing membrane liquid: adding the diluent, the polyester acrylic monomer and the polyurethane modified acrylic resin prepolymer into a reaction vessel, and stirring for 1-3h at 60-115 ℃; cooling to 45-65 ℃, then adding the antibacterial dispersion liquid, the antifouling auxiliary agent, the photoinitiator and the curing agent into a reaction vessel, stirring for 1.5-5h, and cooling to below 40 ℃ to obtain a membrane liquid;
3) and coating the membrane liquid on the surface of a base material, and drying to obtain the antibacterial antifouling scratch-proof protective membrane.
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Cited By (5)
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| CN111849371A (en) * | 2020-08-06 | 2020-10-30 | 上海纳尔实业股份有限公司 | Antibacterial TPU protective film |
| CN113201242A (en) * | 2021-05-21 | 2021-08-03 | 常州市星威化工科技有限公司 | Durable antibacterial roller-coating polyester nano antibacterial coating and preparation method thereof |
| CN113980505A (en) * | 2021-11-02 | 2022-01-28 | 齐耐润工业设备（上海）有限公司 | Antibacterial antirust coating and preparation method thereof |
| CN114149667A (en) * | 2021-12-30 | 2022-03-08 | 江苏华盛材料科技集团有限公司 | High weather-proof biodegradable mulch film special for cotton |
| CN115369684A (en) * | 2021-05-19 | 2022-11-22 | 宁波安特弗新材料科技有限公司 | Hardening layer coating liquid and antibacterial paper film |
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| CN113980505A (en) * | 2021-11-02 | 2022-01-28 | 齐耐润工业设备（上海）有限公司 | Antibacterial antirust coating and preparation method thereof |
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