CN107580636B - Antibacterial primer coating agent for vacuum deposition and multilayer coating method using same - Google Patents

Abstract

The present invention relates to an antibacterial primer coating agent for vacuum deposition and a multi-layer coating method using the same, and more particularly, relates to the ability to improve adhesion between a base material and a functional coating layer by coating with a nanometer thickness Antibacterial primer coating agent for vacuum deposition that imparts antibacterial power to the primer coating with strong antibacterial power, and a water-repellent/oil-repellent functional coating is formed on the antibacterial primer layer formed by using the same, so that it can be used without hindering waterproofing. A multi-layer coating method that exhibits antibacterial power in the case of water and oil repellency and durability of oil-repellent coating.

Description

Antibacterial primer coating agent for vacuum deposition and multilayer coating method using the same

technical field

The present invention relates to an antibacterial primer coating agent for vacuum deposition and a multi-layer coating method using the same, and more particularly, relates to the ability to improve adhesion between a base material and a functional coating layer by coating with a nanometer thickness Antibacterial primer coating agent for vacuum deposition that imparts antibacterial power to the primer coating with strong antibacterial power, and a water-repellent/oil-repellent functional coating is formed on the antibacterial primer layer formed by using the same, so that it can be used without hindering waterproofing. A multi-layer coating method that exhibits antibacterial power in the case of water and oil repellency and durability of oil-repellent coating.

Background technique

In the prior art, with the sharp increase in the usage rate of smart devices with touch-type displays (Smart phone, TabletPC, Smart watch, etc.), the severity of hygiene problems is on the rise. Thus, interest in antibacterial is increasing. However, currently used anti-fingerprint coatings do not have an antibacterial function, and there is an urgent need to develop a technology capable of imparting an antibacterial function to a portion of a touch screen, which is often touched by a user, ie, a touch screen window.

Smartphone windows (touch screens) currently on the market have thin-film (tens of nanometers) anti-fingerprint coatings (or anti-pollution coatings). Anti-fingerprint coatings use fluorine compounds to impart water/oil repellent properties to the surface, which can reduce the surface energy, thereby reducing the contact area of fingerprints and external contaminants with the coated surface, thereby having the ability to make contaminants sticky. Adhesion is minimized and easy to wipe off even if it sticks.

In order to form such a thin film, a coating method called "vacuum deposition" is mostly used, and the coating (surface modification) by vacuum deposition is performed by applying a high temperature heat source to the target (coating agent) in a very short time. Therefore, it is possible to realize nano-sized thin film coating that is very excellent in the quality of the coating film, has a small amount of chemical loss, and does not hinder the optical properties.

As we all know, there are many antibacterial coatings using inorganic substances (Ti series) on the market, but most of them use wet methods, so there are no domestic or foreign companies that produce functional coatings for vacuum deposition. Drugs with antibacterial properties manufacturer. In the case of inorganic coating by vacuum deposition, the base material that can be coated is limited due to the high ignition temperature (the coating material is temperature-sensitive - tempered glass, plastic, etc.), and due to inorganic or metal coating , the surface of the material itself will be discolored, resulting in the problem of hindered optical properties.

Korean Application No. 10-2002-0066286 (Applicant: WIDE&TECH Co., Ltd., Vacuum Deposition System Using Nanotechnology for Antibacterial Action) relates to the development and utilization of technology of a vacuum deposition system in which antibacterial action is applied Nanotechnology for action in which antibacterial action is to be achieved by using trees and plant materials (thorn, elm, plum, etc.), but there are problems that the antibacterial function is insufficient and the stamina is difficult to maintain, and there are problems such as water/oil repellency and Functional issues such as slipperiness.

U.S. Laid-Open Patent No. US2011-0025933 (Applicant: VIZIO Corporation, TELEVISION WITH ANTIMICROBIAL COATING) discloses the use of an antibacterial agent-containing coating agent on the external surface of a television set. A technique for inhibiting the growth of microorganisms, but this technique also has a problem that functions such as water/oil repellency and slipperiness are not realized.

Japanese Patent Application No. 2007-322624 (Applicant: ZNO LAB, Antibacterial material and method for producing the same) discloses antibacterial material and method for producing the same, characterized in that it can be used in A zinc oxide film is formed on glass substrates, plastics, etc. on the surface of touch screens or mobile phones by vacuum deposition, sputtering, etc., but this technology also has problems such as water/oil repellency and slipperiness. The problem of deterioration of optical properties due to metal thin films.

SUMMARY OF THE INVENTION

technical problem to be solved

The technical problem to be solved by the present invention is to provide an antibacterial primer coating agent for vacuum deposition and a multi-layer coating method so as to have a soft touch when used in smart electronic devices and home appliances, and can easily remove fingerprints In addition, the antibacterial primer coating agent for vacuum deposition can be applied between the base material and the functional coating at a nanometer thickness to improve the adhesion force. The primer coating layer imparts antibacterial power, and can utilize a vacuum deposition method as a coating method for a touch-type display in which an antibacterial primer coating agent formed with an antibacterial primer coating agent for vacuum deposition is used in the multilayer coating method. A water-repellent/oil-repellent functional coating is formed on top of the waterproof primer coating, so that it can exhibit antibacterial power without hindering the water- and oil-repellent properties and durability of the water-repellent/oil-repellent coating.

Technical solutions

A first aspect of the present invention provides a dry antibacterial primer coating agent for vacuum deposition, which comprises a silicon-based polymer, a polycondensation reaction product of a functional organic or inorganic silane compound, and an antibacterial substance.

According to a specific example of the first aspect of the present invention, the silicon-based polymer and the functional organic or inorganic silane compound are polycondensed in the presence of the antibacterial substance.

According to another specific example of the first aspect of the present invention, the antibacterial substance is put in and dispersed in the polycondensation reaction product of the silicon-based polymer and the functional organic or inorganic silane compound and mixed with each other.

According to a second aspect of the present invention, there is provided a method for preparing a dry type antibacterial primer coating agent for vacuum deposition, which comprises the following steps: a) preparing a silicone-based polymer, a functional organic or inorganic silane compound and an antibacterial substance mixture; and b) subjecting the mixture to a polycondensation reaction.

According to a third aspect of the present invention, there is provided a method for preparing a dry type antibacterial primer coating agent for vacuum deposition, comprising the steps of: i) preparing a mixture comprising a silicon-based polymer and a functional organic or inorganic silane compound; ii ) subjecting the mixture to a polycondensation reaction; and iii) adding and dispersing an antibacterial substance in the polycondensation reaction product for mixing.

According to a fourth aspect of the present invention, there is provided a multi-layer coating method for a substrate, comprising the steps of: 1) providing a substrate to be coated; 2) vacuum-depositing the dry antibacterial of the present invention on the surface of the substrate and 3) vacuum deposition of a polycondensation reaction product comprising a fluorine-based polymer and a functional organic or inorganic silane compound on top of the antimicrobial primer coating A dry water/oil repellent coating agent is deposited to form a water/oil repellent functional coating.

According to a fifth aspect of the present invention, there is provided a coated article characterized by having on the surface a multi-layer coating comprising a vacuum deposition coating of the dry antimicrobial primer coating agent of the present invention layer, and a water/oil repellent functional coating vacuum deposited on top of it.

Invention effect

The vacuum deposition multilayer coating formed in the present invention has a surface water contact angle of 115° or more, exhibits excellent water and oil repellency, as well as anti-fingerprint (AF), durability and optical properties (Transmittance) is excellent, and at the same time shows excellent antibacterial function, and can also be applied to various materials such as glass, plastic and metal, especially alkoxysilanes that can greatly improve the AF coating that is difficult to adhere to the surface of plastics The substrate adhesion function of the end group is especially suitable for the surface of smart devices such as mobile phones and tablet computers with touch-type displays, household appliances and other electronic products or their components.

Description of drawings

Figure 1 schematically shows a cross-section of a substrate having a vacuum-deposited multilayer coating formed in the present invention on its surface.

2 is a diagram showing (a) tempered glass (TG), (b) polycarbonate (PC) and (c) polymethyl methacrylate ( Photograph of the antimicrobial test results of PMMA).

Detailed ways

Hereinafter, the present invention will be described in more detail.

A first aspect of the present invention provides a dry antibacterial primer coating agent for vacuum deposition, which comprises a silicon-based polymer, a polycondensation reaction product of a functional organic or inorganic silane compound, and an antibacterial substance.

According to a specific example of the first aspect of the present invention, the silicon-based polymer and the functional organic or inorganic silane compound are polycondensed in the presence of the antibacterial substance.

According to another specific example of the first aspect of the present invention, the antibacterial substance is put in and dispersed in the polycondensation reaction product of the silicon-based polymer and the functional organic or inorganic silane compound and mixed with each other.

Specifically, the silicon-based polymer that can be used in the present invention includes at least one selected from the group consisting of an amino group, an epoxy group, a carboxyl group, a carbinol group, a methacryl group, a mercapto group, and a phenyl group. The functional group-modified silicon polymer or its combination preferably includes aminoalkylsilane polymers.

The functional organic or inorganic silane compound that can be used in the present invention may have one or more functional groups (eg, amino group, vinyl group, epoxy group, alkoxy group) that undergo a polycondensation reaction with the silicon-based polymer. , halogen group (halogen group), mercapto group, sulfide group (sulfide group, etc.) organic or inorganic silane compounds. Specifically, the functional organic or inorganic silane compound may be selected from aminopropyltriethoxysilane, aminopropyltrimethoxysilane, amino-methoxysilane, phenylaminopropyltrimethoxysilane, N-(2-aminoethyl)-3-aminopropyltrimethoxysilane, N-(β-aminoethyl)-γ-aminopropylmethyldimethoxysilane, γ-aminopropyltrimethoxysilane Silane, γ-aminopropyldimethoxysilane, γ-aminopropyltriethoxysilane, γ-aminopropyldiethoxysilane, vinyltriethoxysilane, vinyltrimethoxysilane , vinyl tris(methoxyethoxy)silane, dialkoxysilane, trialkoxysilane or tetraalkoxysilane, vinylmethoxysilane, vinyltrimethoxysilane, vinyl epoxy Silane, vinyltriepoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-methacryloyloxypropyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane Ethoxysilane, gamma-methacryloyloxypropyltrimethoxysilane, trimethylchlorosilane, ethyltrichlorosilane, methyltrichlorosilane, phenyltrichlorosilane, vinyltrichlorosilane, Mercaptopropyltriethoxysilane, Trifluoropropyltrimethoxysilane, Bis(trimethoxysilylpropyl)amine, Bis(3-triethoxysilylpropyl)tetrasulfide, Bis(trimethoxysilylpropyl)tetrasulfide (Triethoxysilylpropyl)disulfide, (methacryloyloxy)propyltrimethoxysilane, 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, 3 - Glycidoxypropylmethyldiethoxysilane, 3-glycidoxypropyldiethoxysilane, 3-glycidoxypropyltriethoxysilane, p-styrene Trimethoxysilane and their combination, preferably aminopropyltriethoxysilane or a combination comprising the same.

The antibacterial substance that can be used in the present invention can be selected from natural materials or extracts thereof, antibacterial polymer compounds, metal-containing antibacterial compounds, and combinations thereof.

Examples of the natural materials or their extracts include, for example, skins of crabs, shrimps or their extracts (eg: chitosan), green tea or their extracts (eg: catechin) , Cortex Moutan or its extracts (for example: Paeonol, Paeoniflorin, Paeonolide, sitosterol, Gallic acid, Methyl gallate ( Methyl gallate), tannic acid (Tannic acid), quercetin (Quercetin, etc.), grapefruit or its extract (for example: naringin (naringin)), citral (citral), licorice or its extract (for example: Flavonoids), Japanese cypress or its extracts (eg: phytoncide), bamboo or its extracts (eg: polyphenols), germinated bean or its extracts (eg: glyceollins) ), skullcap or its extract (eg: tyrosinase), wasabi (wasabi) or its extract (eg: isothiocyanate), mustard (mustard) or its extract, juniper Natural materials or extracts thereof of hinokitiol and combinations thereof. The extract can be prepared by a known extraction method.

Examples of the antibacterial polymer compound include aromatic or heterocyclic polymers, acrylic or methacrylic polymers, cationic conjugated polymer electrolytes, polysiloxane polymers, and natural polymer analogs. Molecules, and one or more polymer compounds of phenol or benzoic acid derivative polymers, such as those having a linear or branched polymer chain attached to the polymer chain selected from the group consisting of ammonium salts, phosphonium salts A compound having one or more functional groups selected from a group consisting of a sulfonium salt group, a sulfonium salt group or another onium salt group, a phenylamide group and a diguanide group.

Examples of the metal-containing antibacterial compound include organic compounds or complexes containing metal ions such as silver, copper, zinc, etc., which specifically include metal-chitin/chitosan, metal-carbonate, and metal-sulfuric acid. Salt, metal-nitrate, metal-acetate, metal-zeolite and metal-phosphate compounds or complexes. Examples of organic substances having excellent chelation-forming ability for metal ions include chitin/chitosan. Such metal-containing antimicrobial compounds can be prepared from various organic compounds.

According to a preferred embodiment of the present invention, an antibacterial coating agent prepared by using the natural material or its extract, or an antibacterial polymer compound, which is harmless to the human body and has stability and durability, or an antibacterial polymer compound as an antibacterial substance is coated on the The glass surface can obtain an excellent antibacterial effect with an initial antibacterial power of 99.9%.

According to a more preferable example of the present invention, as the antibacterial substance, chitosan, paeonol (paeonol: 1-(2-hydroxy-4-methoxyphenyl)ethanone) (1 -(2-hydroxy-4-methoxyphenyl)ethanone)) or a combination thereof.

In the antibacterial primer coating agent of the present invention, the content of the polycondensation reaction product of the silicon-based polymer and the functional organic or inorganic silane compound is preferably 80 to 99% by weight based on 100% by weight of the total dry weight of the coating agent. , more preferably 85 to 95% by weight.

In the antibacterial primer coating agent of the present invention, the content of the antibacterial substance is preferably 1-20% by weight, more preferably 5-15% by weight, based on 100% by weight of the total dry weight of the coating agent.

According to a second aspect of the present invention, there is provided a method for preparing a dry type antibacterial primer coating agent for vacuum deposition, which comprises the following steps: a) preparing a silicone-based polymer, a functional organic or inorganic silane compound and an antibacterial substance mixture; and b) subjecting the mixture to a polycondensation reaction.

According to a third aspect of the present invention, there is provided a method for preparing a dry type antibacterial primer coating agent for vacuum deposition, comprising the steps of: i) preparing a mixture comprising a silicon-based polymer and a functional organic or inorganic silane compound; ii ) subjecting the mixture to a polycondensation reaction; and iii) adding and dispersing an antibacterial substance in the polycondensation reaction product for mixing.

The method and equipment used in the preparation of the mixture are not particularly limited, and conventional reaction vessels or mixing equipment can be used. In addition, the conditions of the polycondensation reaction in the polycondensation reaction step are not particularly limited, for example, it can be carried out by reflux reaction at a temperature of 100 to 200° C. under an inert gas (eg, argon, nitrogen). In addition, in order to make the polycondensation radical reaction proceed more easily, the reaction mixture may be irradiated with ultrasonic waves and/or ultraviolet rays (UV) during the reaction.

The product of the polycondensation reaction may optionally undergo a stabilization step. The stabilization conditions are not particularly limited, and for example, the polycondensation reaction product can be stabilized by standing at normal temperature for 24 hours.

According to a fourth aspect of the present invention, there is provided a multi-layer coating method for a substrate, comprising the steps of: 1) providing a substrate to be coated; 2) vacuum-depositing the dry antibacterial of the present invention on the surface of the substrate and 3) vacuum deposition of a polycondensation reaction product comprising a fluorine-based polymer and a functional organic or inorganic silane compound on top of the antimicrobial primer coating A dry water/oil repellent coating agent is deposited to form a water/oil repellent functional coating.

In the antibacterial primer coating, the antibacterial substances are arranged on the base of the coating, so that the antibacterial power can be exerted during the maintenance of the life of the coating. In addition, the water-repellent/oil-repellent functional coating can exhibit contamination resistance, water and oil repellency, surface lubricity, fingerprint resistance, and the like.

As far as the substrate to be coated is concerned, as long as it can be coated by vacuum deposition, there is no particular limitation, and glass (for example, tempered glass (TG), etc.), Plastics (eg, acrylic resin, polycarbonate (PC), polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), acrylonitrile-butadiene-styrene (ABS) resin etc.) and metals (eg, stainless steel (SUS), etc.) and other substrates for coating.

The water-repellent/oil-repellent coating agent for forming the water-repellent/oil-repellent functional coating contains a polycondensation reaction product of a fluorine-based polymer and a functional organic or inorganic silane compound.

The fluorine-based polymer that can be used in the water/oil repellent coating agent may be a perfluoropolymer. Specifically, the fluorine-based polymer can be selected from perfluoropolyether (perfluoropolyether), vinylidene fluoride (vinylidene fluoride) polymer, tetrafluoroethylene (tetrafluoroethylene) polymer, hexafluoropropylene (hexafluoropropylene) polymer, Chlorotrifluoroethylene polymers and combinations thereof may preferably be perfluoropolyethers.

The functional organic or inorganic silane compound usable in the water/oil repellent coating agent can be used without limitation as the compounds usable in the antibacterial primer coating agent described above.

真空沉积用设备(电子束蒸镀(Electron-beamevaporation)、热蒸镀(Thermal evaporation)、热溅镀(Thermal sputter)等)来进行真空沉积涂覆。真空沉积的优点在于，可以容易地将多种物质利用于涂覆，几乎没有涂覆药品的损失量，并且能够形成既干净又均匀的薄膜。此外，设备整体的结构比较简单，并且制作薄膜时热性、电性方面的复杂性少，因此适合研究薄膜形成时的膜的物理性质。The vacuum deposition method is not particularly limited, and conventional vacuum deposition methods and equipment can be used. According to a specific example of the present invention, the PVD (Physical Vapor Deposition) method can be used to

The vacuum deposition coating is performed using equipment (electron-beam evaporation, thermal evaporation, thermal sputter, etc.) for vacuum deposition. The advantages of vacuum deposition are that a variety of substances can be easily used for coating, there is little loss of coating chemicals, and a clean and uniform film can be formed. In addition, the overall structure of the equipment is relatively simple, and the thermal and electrical complexity of the thin film is small, so it is suitable for studying the physical properties of the thin film during thin film formation.

According to a fifth aspect of the present invention, there is provided a coated article characterized by having on the surface a multi-layer coating comprising a vacuum deposition coating of the dry antimicrobial primer coating agent of the present invention layer, and a water/oil repellent functional coating vacuum deposited on top of it.

The article can be a mobile phone, tablet computer and other smart devices with touch-type displays, household appliances, vending machines, public interactive information equipment, external electronic products that can be manually touched, or other materials of glass, plastic and metal. The component, preferably, may be a smart device with a touch-type display or a component thereof.

Hereinafter, the present invention will be described in more detail by way of examples. However, the present invention is not limited to these Examples.

[Example]

Example 1

20 g of (3-glycidoxypropyl)trimethoxysilane and 30 g of a silicon oligomer having an epoxy group were put into the reaction vessel, stirred at a temperature of 150° C. for 1 hour under an inert argon atmosphere, and then 10 g of paeonol (extracted from Paeonia suffruticosa) was added thereto as an antibacterial substance. 50 g of aminopropyltriethoxysilane as a functional organic or inorganic silane compound was put therein, and a polycondensation reaction was performed under an inert argon atmosphere at a temperature of about 150° C., and then the The reaction product was stabilized for 24 hours, thereby preparing a dry antibacterial primer coating agent.

In addition, 50 g of aminopropyltriethoxysilane as a functional organic or inorganic silane compound was put into 50 g of perfluoropolyether as a fluorine-based polymer, and under an inert argon atmosphere at about The polycondensation reaction was carried out at a temperature of 150° C., and then the reaction product was stabilized at normal temperature for 24 hours, thereby preparing a dry-type water-repellent/oil-repellent coating agent (AF coating agent).

真空沉积用设备中通过E/B(电子束(Electron-beam))蒸镀方式对钢化玻璃(TG)进行多层涂覆。为了使涂覆顺利进行，涂覆前在10槽(bath)洗涤器中用5wt％的碱性洗涤剂(钢化玻璃用洗涤剂)对钢化玻璃进行湿式清洗。真空沉积条件为初期蚀刻：180秒，温度：80℃。Using the prepared dry antibacterial primer coating agent and dry waterproof/oil repellent coating agent, and in

Multilayer coating of tempered glass (TG) was carried out by E/B (Electron-beam) evaporation method in the equipment for vacuum deposition. In order for the coating to proceed smoothly, the tempered glass was wet-cleaned with 5 wt% alkaline detergent (detergent for tempered glass) in a 10 bath washer before coating. The vacuum deposition conditions were initial etching: 180 seconds, and temperature: 80°C.

For the coated samples, the following physical property evaluations were performed.

(1) Measurement method of contact angle

The contact angle of the coated face was measured after coating using a contact angle measuring device. When measuring the contact angle, the size of one water droplet was set to 3 μl, and in order to confirm the uniformity of the coating, the contact angle was measured at five points in each of the coated samples, and an average value was taken.

(2) High temperature and high humidity test

After standing for 72 hours under conditions of a temperature of 60° C. and a humidity of 90% RH, the contact angle was measured. This is done by the following method: a change in the contact angle after testing within 15° compared to the initial contact angle of the coated sample is considered a pass (PASS).

(3) UV test

After standing in UV-B type ultraviolet equipment for 72 hours, the contact angle was measured. This is done by the following method: a change in the contact angle after testing within 15° compared to the initial contact angle of the coated sample is considered a pass (PASS).

(4) Salt spray test

An aqueous solution of sodium chloride (NaCl) at a concentration of 5 wt% was sprayed on the surface of the coated sample and left for 72 hours, and then the contact angle was measured. This is done by the following method: a change in the contact angle after testing within 15° compared to the initial contact angle of the coated sample is considered a pass (PASS).

(5) Wear resistance test

An abrasion resistance test was performed to confirm durability after coating. 1500 abrasion tests were performed using abrasion-resistant rubber. It is carried out by the following method: As a result of the test, the change in the contact angle after the test is within 15° compared with the initial contact angle of the coated sample, and it is regarded as a pass (PASS).

(6) Measurement of total light transmittance

Measurements were performed using a UV-Spectrophotometer device.

(7) Measurement of haze (Haze)

Measurements were performed using a spectrophotometer.

(8) Pencil hardness test

Pencils of H to 9H were prepared, and the test was carried out by setting a load of 1 kg and scribing twice on the coated surface.

(9) Antibacterial power confirmation test

The test was performed according to JIS Z 2801 using Escherichia coli (ATCC 8739), Staphylococcus aureus (ATCC 6538P). The surface of the coated sample was inoculated with 400 μl of the diluted bacterial solution, and incubated under a constant temperature and humidity environment for 24 hours, and then the antibacterial results were desorbed and confirmed.

The physical property evaluation results of the multilayer coated tempered glass samples prepared in Example 1 are shown in Table 1 below.

Table 1 (Example 1: Substrate - Tempered Glass)

Example 2

20 g of (3-glycidoxypropyl)trimethoxysilane and 30 g of a silicon oligomer having an epoxy group were put into the reaction vessel, and stirred at a temperature of 150° C. for 1 hour under an inert argon atmosphere. Then, 50 g of aminopropyltriethoxysilane, which is a functional organic or inorganic silane compound, was put thereinto, and a polycondensation reaction was performed under an inert argon atmosphere at a temperature of about 150°C. 10 g of paeonol (extracted from Moutan bark) was put into the reaction product as an antibacterial substance and uniformly dispersed and mixed to prepare a dry antibacterial primer coating agent.

In addition, a dry-type water-repellent/oil-repellent coating agent (AF coating agent) was prepared in the same manner as in Example 1.

Using the prepared dry-type antibacterial primer coating agent and dry-type waterproof/oil-repellent coating agent, tempered glass and polymethyl methacrylate (PMMA) substrates ( PMMA is coated at a temperature of 60° C.) for multi-layer coating. For the prepared samples, the initial contact angle and the contact angle after the abrasion resistance test were measured by the methods described above, and the initial antibacterial power was tested. The test results are shown in Table 2-1 below.

In addition, the contact angles after the ultraviolet test and after the salt spray test were measured for the coated samples of the PMMA substrate, and the antibacterial power was tested, and the results are shown in the following Table 2-2.

Table 2-1 (Example 2: Substrate-Tempered Glass and PMMA)

Table 2-2 (Example 2: Substrate-PMMA)

Example 3

Polycarbonate (PC) substrates were multi-coated in the same manner as in Example 2. For the prepared samples, the initial contact angle was measured by the above-mentioned method, and the initial antibacterial power was tested. The test results are shown in Table 3 below.

Table 3 (Example 3: Substrate-PC)

Evaluation item Evaluation results Contact Angle (Initial) 119.3° Antibacterial power (initial stage) 99.9%

[Symbol Description]

1: Water/oil repellent functional coating (AF coating)

2: Antibacterial primer coating

3: Substrate

4: Antibacterial substances

Claims (9)

1. The dry antibacterial primer coating agent for vacuum deposition is characterized by comprising 85-95 wt% of a polycondensation reaction product of a silicon polymer and a functional organic or inorganic silane compound and 5-15 wt% of an antibacterial substance, wherein the antibacterial substance is paeonol, the silicon polymer and the functional organic or inorganic silane compound are subjected to polycondensation in the presence of the antibacterial substance, and the silicon polymer is a modified silicon polymer or a combination thereof with more than one functional group selected from amino, epoxy, carboxyl, carbinol, methacryl, mercapto and phenyl.

2. The dry antibacterial primer coating agent for vacuum deposition as claimed in claim 1, wherein the functional organic or inorganic silane compound is selected from aminopropyltriethoxysilane, aminopropyltrimethoxysilane, amino-methoxysilane, phenylaminopropyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropyltrimethoxysilane, N- (β -aminoethyl) - γ -aminopropylmethyldimethoxysilane, γ -aminopropyltrimethoxysilane, γ -aminopropyldimethoxysilane, γ -aminopropyltriethoxysilane, γ -aminopropyldiethoxysilane, vinyltriethoxysilane, vinyltrimethoxysilane, vinyltris (methoxyethoxy) silane, dialkoxysilane, trialkoxysilane or tetraalkoxysilane, a silane compound having a structure of a structure represented by formula (I), a silane compound having a structure represented by formula (II), a silane compound having a structure represented by formula (III), a silane compound having a structure represented by formula (II), and a silane compound having a structure represented by formula (, Vinylmethoxysilane, vinyltrimethoxysilane, vinylepoxysilane, vinyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, gamma-glycidoxypropyltriethoxysilane, gamma-methacryloxypropyltrimethoxysilane, trimethylchlorosilane, ethyltrichlorosilane, methyltrichlorosilane, phenyltrichlorosilane, vinyltrichlorosilane, mercaptopropyltriethoxysilane, trifluoropropyltrimethoxysilane, bis (trimethoxysilylpropyl) amine, bis (3-triethoxysilylpropyl) tetrasulfide, bis (triethoxysilylpropyl) disulfide, (methacryloyloxy) propyltrimethoxysilane, 2- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane, poly (ethylene-co-propylene) carbonate, poly (ethylene-, 3-glycidoxypropylmethyldiethoxysilane, 3-glycidoxypropyldiethoxysilane, 3-glycidoxypropyltriethoxysilane, p-styryltrimethoxysilane, and combinations thereof.

3. The preparation method of the dry antibacterial primer coating agent for vacuum deposition is characterized by comprising the following steps: a) preparing a mixture containing 25 to 30 wt% of a silicon-based polymer, 60 to 65 wt% of a functional organic or inorganic silane compound, and 5 to 15 wt% of an antibacterial substance, based on 100 wt% of the total dry weight of the coating agent; and b) performing a polycondensation reaction on the mixture, wherein the antibacterial substance is paeonol, the polycondensation reaction is performed by a reflux reaction at a temperature of 100-200 ℃ in an inert gas, and the silicon polymer is a modified silicon polymer or a combination thereof, wherein the modified silicon polymer has one or more functional groups selected from amino groups, epoxy groups, carboxyl groups, carbinol groups, methacryl groups, mercapto groups and phenyl groups.

4. The method of preparing the dry antibacterial primer coating agent for vacuum deposition as claimed in claim 3, wherein the functional organic or inorganic silane compound is selected from aminopropyltriethoxysilane, aminopropyltrimethoxysilane, amino-methoxysilane, phenylaminopropyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropyltrimethoxysilane, N- (β -aminoethyl) - γ -aminopropylmethyldimethoxysilane, γ -aminopropyltrimethoxysilane, γ -aminopropyldimethoxysilane, γ -aminopropyltriethoxysilane, γ -aminopropyldiethoxysilane, vinyltriethoxysilane, vinyltrimethoxysilane, vinyltris (methoxyethoxy) silane, dialkoxysilane, silane, Trialkoxysilane or tetraalkoxysilane, vinylmethoxysilane, vinyltrimethoxysilane, vinylepoxysilane, vinyltriphenoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, gamma-glycidoxypropyltriethoxysilane, gamma-methacryloxypropyltrimethoxysilane, trimethylchlorosilane, ethyltrichlorosilane, methyltrichlorosilane, phenyltrichlorosilane, vinyltrichlorosilane, mercaptopropyltriethoxysilane, trifluoropropyltrimethoxysilane, bis (trimethoxysilylpropyl) amine, bis (3-triethoxysilylpropyl) tetrasulfide, bis (triethoxysilylpropyl) disulfide, (methacryloxy) propyltrimethoxysilane, vinyltrimethoxysilane, vinyl, 2- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane, 3-glycidoxypropylmethyldiethoxysilane, 3-glycidoxypropyldiethoxysilane, 3-glycidoxypropyltriethoxysilane, p-styryltrimethoxysilane, and combinations thereof.

5. A method for multilayer coating of a substrate comprising the steps of: 1) providing a substrate to be coated; 2) vacuum depositing the dry antibacterial primer coating agent according to any one of claims 1 to 2 on the surface of the base material to form an antibacterial primer coating layer; and 3) vacuum-depositing a dry water/oil repellent coating agent for vacuum deposition comprising a polycondensation reaction product of a fluorine-based polymer and a functional organic or inorganic silane compound on the antibacterial primer coating layer, thereby forming a water/oil repellent functional coating layer.

6. Method for the multilayer coating of a substrate according to claim 5, characterized in that the substrate is a glass, plastic or metal material.

7. The method of multilayer coating of a substrate according to claim 5, wherein the fluorine-based polymer is selected from the group consisting of perfluoropolyethers, vinylidene fluoride polymers, tetrafluoroethylene polymers, hexafluoropropylene polymers, chlorotrifluoroethylene polymers, and combinations thereof.

8. A coated article characterized by having a multi-layer coating layer on a surface, the multi-layer coating layer comprising a vacuum-deposited coating layer of the dry antibacterial primer coating agent according to any one of claims 1 to 2, and a water/oil repellent functional coating layer vacuum-deposited thereon.

9. The coated article of claim 8, wherein the article is a smart device with a touch-sensitive display, a home appliance, a vending machine, a public interactive information device, a manually touchable external electronic product, or a component thereof.

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