Household multifunctional water-based strippable antiviral coating composition as well as preparation method and application thereof

Abstract

The invention relates to a household multifunctional water-based strippable antiviral coating composition and a preparation method and application thereof, and belongs to the technical field of decorative coatings, and the household multifunctional water-based strippable antiviral coating composition is prepared by adopting acrylic acid strippable resin and adding other raw materials such as a nano antibacterial material. The household multifunctional water-based strippable antiviral coating composition disclosed by the invention is suitable for protecting base material surfaces which are frequently contacted with household, hospital facilities, public facilities and stone surfaces, and solves the technical problem that a strippable coating also has strippability on rough surfaces (such as wall surfaces, stone, wood and other base materials with mineral ions); the product also has the characteristics of efficient anti-virus function, excellent peelability, excellent protective property, greenness, safety and the like, and can meet the individual multi-aspect requirements of consumers.

Description

Technical Field

[0001] The invention relates to the technical field of decorative coatings, and in particular to a household multifunctional water-based strippable antiviral coating composition, a preparation method and application thereof. Background Art

[0002] With the vigorous development of the paint industry, consumers can learn about various types of paint through a variety of channels. The paint information learned through these channels is becoming more and more comprehensive. Consumers are becoming more and more professional, and demand is increasing. Paint companies also need to develop products that are more acceptable to consumers based on consumer needs.

[0003] At present, there are more industrial applications of peelable coatings in the market, but relatively few in home, hospital facilities, public facilities, and stone surfaces. The coating composition covers the surface of home, hospital facilities, public facilities, and rough surfaces (walls, stones, wood and other substrates with mineral ions) to isolate external erosion (scratches, scratches, aging, pollution, dust, oil, fingerprints, etc.), and adds antiviral performance on the basis of isolating the surface of rough surfaces (walls, stones, wood and other substrates with mineral ions). The technical difficulty of peelable coatings also having peelability on the surface can be solved, which can allow consumers to apply it in daily life, and help consumers on various substrates that need to be shielded, protected or antiviral, especially substrates that need antiviral, such as (walls, door handles, door frames, glass windows, public PC seats or disposable express packaging, etc.) that are often in contact with a variety of substrates that are not often disinfected. On these substrates, an antiviral coating is established to protect them, which can reduce the residue of bacteria and viruses on these substrates within a few days. After the coating is covered and dried, it can be completely peeled off in a short time, and will not remain on the original substrate, helping to play a role in daily protection.

[0004] In recent years, various epidemics, flu and viruses have gradually affected our lives, such as wearing masks, washing hands with disinfectant, and maintaining social distance. It can be said that in the next few years or even longer, we will need to coexist with these viruses, prevent the spread of viruses, and always be on guard against their harm to humans. Now the virus is more and more contagious, and infection through contact with objects has also occurred frequently. Individuals, units, and governments also regularly disinfect various substrates. Disinfection work is time-consuming and labor-intensive, and it is difficult to ensure 100% complete disinfection, so it is necessary to meet people's urgent needs for health and safety in various indoor and outdoor occasions.

[0005] To sum up, antiviral products have just started in the coatings industry and there is still a lot of room for development. Most of the products on the market are used in relatively simple scenarios and are not very professional. Therefore, a product that includes the technical difficulties of strippability, rough surface (walls, stones, wood and other substrates with mineral ions) strippability and antiviral performance is very scarce in the current products on the market. Therefore, this field urgently and urgently needs to develop a household multifunctional water-based strippable antiviral coating, and the product needs to have performance indicators on the applicable substrate. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a household multifunctional water-based strippable antiviral coating composition and a preparation method thereof, which can not only cover household, hospital facilities, public facilities, rough surfaces (walls, stone materials, wood and other substrates with mineral ions) for isolating external erosion (scratches, scratches, aging, pollution, dust, oil stains, fingerprints, etc.) on the basis of increasing antiviral performance, but also solve the technical difficulty that the strippable coating is also strippable on the rough surface (walls, stone materials, wood and other substrates with mineral ions) surface, so that consumers can use it in daily life, and help consumers on various substrates that need to be shielded, protected or antiviral, especially substrates that need antiviral, such as (walls, door handles, door frames, glass windows, public PC seats or disposable express packaging, etc.) are often exposed to a variety of substrates that are not often disinfected. On these substrates, an antiviral coating is established to protect, which can reduce the residues of bacteria and viruses on these substrates within a few days. After the coating is covered and dried, it can be completely peeled off in a short time, and will not remain on the original substrate, helping to play a role in daily protection.

[0007] To solve the above problems, the present invention is implemented through the following technical solutions:

[0008] In a first aspect of the present invention, a household multifunctional water-based strippable antiviral coating composition is provided, comprising the following components in parts by weight:

[0009] 45-70 parts of film-forming substances;

[0010] 0.1 to 2.2 parts of nano antibacterial material (preferably 0.5 to 2.2 parts);

[0011] 0.1 to 1 part of substrate wetting agent;

[0012] 0.1-1 part pH regulator;

[0013] 1 to 5.0 parts of film-forming aid;

[0014] 1-20.0 parts water;

[0015] and 1 to 5.0 parts of other additives;

[0016] And the pH value of the coating composition is 8.5 to 9.5;

[0017] The film-forming material includes: Dow PC-25 water-based hydrophobic phase acrylic emulsion and hydrophilic acrylic emulsion mixed with wax emulsion CT3342;

[0018] The weight ratio of the Dow PC-25 aqueous hydrophobic phase acrylic emulsion to the wax emulsion CT3342 is 5:1.

[0019] The film-forming material includes Dow PC-25 water-based hydrophobic phase acrylic emulsion, and its technology is to use the macromolecular "steric hindrance" method, that is, to use the macromolecular coating principle to effectively block the polar groups of the latex particles, reduce the contact opportunity with the substrate, and obtain a water-based peelable coating resin with weak adhesion but relatively easy to peel without affecting the cohesive force of the paint film. Another core technology is to use a special phase separation technology, which is to mix a wax emulsion (CT3342) with an emulsifier that is not resistant to divalent ions in Dow PC-25 water-based hydrophobic phase acrylic emulsion, and form a phase separation structure with another hydrophilic acrylic resin (XK-85) in the formula. The emulsifier in the mixed wax emulsion will form a special state of water-oil balance and be evenly distributed in the two emulsions. If the coating is applied to the wall, the emulsifier will quickly aggregate after being disturbed by the rough surface (wall, stone, wood and other substrates with mineral ions) or divalent ions in the wall, and the emulsified wax emulsion will quickly migrate to the hydrophobic emulsion phase layer, and increase the difference in hydrophilicity and hydrophobicity between the two emulsions, so that the hydrophilic phase emulsion will completely migrate to the surface of the rough surface (wall, stone, wood and other substrates with mineral ions) to form the first film sealing layer. The hydrophobic emulsion will dry slowly and form the second film because it does not directly contact the substrate absorption layer and has a large molecular weight. Due to the difference in intermolecular forces caused by the hydrophilicity and hydrophobicity of the two coatings and the difference in molecular weight, coupled with the effect of wax, the second coating can be peeled off from the first surface, thus solving the problem of the rough surface (wall, stone, wood and other substrates with mineral ions) being peelable. The antiviral material will be free around the polar group, and the virus will destroy the cell membrane of the virus after contacting the paint film, thereby killing the virus and protecting the substrate.

[0020] The household multifunctional water-based strippable antiviral coating composition of the present invention is further optimized as follows:

[0021] The Dow PC-25 aqueous hydrophobic phase acrylic emulsion has one or more of the following characteristics:

[0022] Solid content is 44-46%;

[0023] pH value is 7.5-8.5;

[0024] Viscosity: 300-450mPas;

[0025] The minimum film forming temperature is 0-5°C.

[0026] The household multifunctional water-based strippable antiviral coating composition of the present invention is further optimized as follows:

[0027] The wax emulsion CT3342 has one or more of the following characteristics:

[0028] Appearance: Low viscosity white opaque liquid wax type;

[0029] Paraffin solids: 45%;

[0030] Emulsification type: anionic;

[0031] pH value: 8.5~9.5.

[0032] The household multifunctional water-based strippable antiviral coating composition of the present invention is further optimized as follows:

[0033] The hydrophilic acrylic emulsion is XK-85 hydrophilic acrylic emulsion.

[0034] The household multifunctional water-based strippable antiviral coating composition of the present invention is further optimized as follows:

[0035] It includes one or a combination of the following features:

[0036] The substrate wetting agent is a dimethyl-structured organic silicon surfactant, which can reduce surface tension and spread better on the substrate surface, and the leveling property of the paint film is also improved. At the same time, through a large number of experiments, it was unexpectedly found that the strippability with and without the addition of the substrate wetting agent has completely different effects. The addition of the substrate wetting agent affects the interlayer adhesion and the coating film, and the continuous strippability of the paint film is improved.

[0037] The film-forming aid is an alcohol ester film-forming aid, which helps the paint film to form better.

[0038] The pH regulator is one or a combination of organic alcohol amine, potassium methyl silicate, sodium hydroxide, sodium benzene sulfonate, and preferably organic alcohol amine.

[0039] The other additives include the following components in parts by weight:

[0040] 0.1 to 1 parts of cosolvent; 0.1 to 3 parts of thickener (preferably 1 to 3 parts); 0.1 to 1 parts of defoamer (preferably 0.1 to 0.6 parts); 0.1 to 4 parts of mildewproofing agent (preferably 0.1 to 1 parts); 0.1 to 4 parts of preservative (preferably 0.1 to 1 parts).

[0041] The household multifunctional water-based strippable antiviral coating composition of the present invention is further optimized as follows:

[0042] The mass ratio of the cosolvent: thickener: defoamer: mildew inhibitor: preservative is (0.1-1):(1-3):(0.1-0.6):(0.1-1):(0.1-1). This component ratio enables the coating to have better long-term storage and stability.

[0043] The household multifunctional water-based strippable antiviral coating composition of the present invention is further optimized as follows:

[0044] The nano antibacterial material comprises a nano cuprous oxide solution and a silver ion antibacterial material, and the weight ratio of the nano cuprous oxide solution to the silver ion antibacterial material is 1 to 2.2:1;

[0045] Nano-cuprous oxide solution releases high-concentration and environmentally friendly copper ions, thereby destroying the stability of cell membranes.

[0046] The further optimization of the nano cuprous oxide solution is as follows:

[0047] The nano cuprous oxide solution is prepared by using an organic amine solution, water and nano cuprous oxide.

[0048] The further optimization of the nano cuprous oxide solution is as follows:

[0049] The nano cuprous oxide solution comprises the following components in parts by weight:

[0050] 2-10 parts of organic amine solution, 20-40 parts of nano cuprous oxide, 40-60 parts of water;

[0051] The pH value of the nano cuprous oxide solution is 12-14.

[0052] The further optimization of the household multifunctional water-based strippable antiviral coating composition is as follows:

[0053] It includes one or a combination of the following features:

[0054] The nano cuprous oxide is a red powder with a particle size of 2 to 4 μm. The nano cuprous oxide particles can undergo photocatalytic oxidation under visible light. After being added to conventional coatings, the nano cuprous oxide particles are suitable for removing harmful gases such as formaldehyde, benzene, ammonia, etc. released by decorative materials, as well as various indoor viruses, oil smoke, Freon, Freon substitutes, etc., and have significant advantages such as mildew prevention, sterilization, deodorization, and indoor air purification.

[0055] The silver ion antibacterial material adopts silver ion coupling type antiviral material.

[0056] The silver ion antibacterial material (preferably using silver ion coupling technology) can attach silver ions to the surface of the virus membrane to prevent material exchange and replication, and can migrate into the inside of the virus to interfere with the virus respiratory system, thereby destroying the virus cell energy system.

[0057] The household multifunctional water-based strippable antiviral coating composition of the present invention is further optimized as follows:

[0058] The nano antibacterial material comprises the following preparation steps:

[0059] S1. Add an acceptable amount of water in the reaction tank in proportion and control the disperser speed at 300 to 500 rpm;

[0060] S2. Then add the organic amine solution and nano cuprous oxide in sequence, and continue to disperse for 8 to 10 minutes;

[0061] S3. The obtained mixed solution is sealed and stored, and allowed to stand for 30 to 120 minutes to prepare the nano antibacterial material.

[0062] The household multifunctional water-based strippable antiviral coating composition of the present invention is further optimized as follows:

[0063] The coating composition further comprises 0 to 99 parts by weight of water; preferably 1 to 50 parts by weight of water; more preferably 5 to 20 parts by weight of water.

[0064] The appropriate amount of water added can be used as a dispersion medium and to adjust the viscosity.

[0065] The household multifunctional water-based strippable antiviral coating composition of the present invention is further optimized as follows:

[0066] The hydrophilic acrylic emulsion has one or more of the following characteristics:

[0067] The solid content of the acrylic emulsion is 39-41%;

[0068] The pH value of the acrylic emulsion is 9 to 9.5;

[0069] The viscosity of the acrylic emulsion is 100 to 300 mPas;

[0070] The minimum film-forming temperature of the acrylic emulsion is 16-20°C.

[0071] The hydrophilic acrylic emulsion is preferably: hydrophilic acrylic emulsion XK-85.

[0072] The household multifunctional water-based strippable antiviral coating composition of the present invention is further optimized as follows:

[0073] The thickener is a polyurethane thickener, which has good leveling properties and can effectively increase the paint amount and improve the fullness of the paint film.

[0074] The defoaming agent is one or a combination of an organosilicon defoaming agent and a mineral oil defoaming agent; more preferably, the defoaming agent is an organosilicon defoaming agent.

[0075] The mildew inhibitor can effectively protect the paint film and prevent mildew.

[0076] The preservative can protect the coating from spoiling during storage.

[0077] There is no specific limitation on the mildew-proofing agent and preservative of the present invention, as long as they do not limit the purpose of the present invention. For example, the preservative or mildew-proofing agent is an isothiazolinone derivative preservative, a benzimidazole ester preservative, and the like.

[0078] The second aspect of the present invention provides a method for preparing the coating composition according to the first aspect, comprising the following preparation steps:

[0079] A. Preparation of hydrophobic strippable resin mixed with wax emulsion:

[0080] a1. Dow PC-25 aqueous hydrophobic phase acrylic emulsion was first added to the reaction tank according to the ratio, and the dispersant speed was controlled at 600 rpm;

[0081] a2. Then add wax emulsion CT3342 and continue stirring for 8 to 10 minutes;

[0082] a3. The resulting mixed emulsion was sealed and stored to prepare a hydrophobic strippable resin mixed with a wax emulsion;

[0083] B. Preparation of coating composition:

[0084] It comprises the following preparation steps:

[0085] b1. Add 5 to 10 parts of water in the reaction tank in proportion and stir;

[0086] b2. Sequentially add pH adjuster, cosolvent and stir;

[0087] b3. Then add the nano-antibacterial material and add 0.1 to 1 parts of water, and then increase the speed and stir to obtain a mixed system Ⅰ;

[0088] b4 reduce the speed, to the obtained mixed system Ⅰ sequentially added in proportion to the wax emulsion mixed with a hydrophobic strippable resin, a hydrophilic acrylic emulsion, a film-forming agent and stirred;

[0089] b5. Then, other additives (solvent, defoamer, thickener, mildew inhibitor, preservative) and substrate wetting agent are added to the reaction tank in sequence and stirred;

[0090] b6. Finally, the remaining portion of water was added, stirred and adjusted to the desired viscosity to obtain the coating composition;

[0091] The pH value of the obtained coating composition needs to be controlled at 8.5-9.5.

[0092] The third aspect of the present invention provides a coating, wherein the coating is formed by coating the coating composition as described in the first aspect.

[0093] A fourth aspect of the present invention provides a product, wherein the product comprises the coating according to the third aspect.

[0094] The further optimization of the product described therein is:

[0095] The product further comprises a substrate, and the coating is located on the surface of the substrate.

[0096] The further optimization of the product described therein is:

[0097] The product is a display card.

[0098] The further optimization of the product described therein is:

[0099] The substrates are common substrates that can be collected on the market (wall, stone, tinplate, wood, cold-rolled steel, glass, tile, stainless steel, aluminum plate, ABS, PS, PVC, PET) and other substrates that need to be protected.

[0100] The household multifunctional water-based strippable antiviral coating composition of the present invention has good strippability on a variety of substrates, has a fast film-forming speed, can be stripped for a long time, and solves the technical difficulty that the strippable coating is also strippable on rough surfaces (walls, stones, wood and other substrates with mineral ions).

[0101] In addition, the nano cuprous oxide solution and silver ion antibacterial material contained in the nano antibacterial material can destroy the cell membrane of the virus and play an antiviral role;

[0102] At the same time, it not only increases the antiviral performance on the basis of covering the surfaces of various substrates for household, hospital facilities, public facilities, and stone materials to isolate external erosion (scratches, scratches, aging, pollution, dust, oil, fingerprints, etc.), but also solves the technical difficulty that the strippable coating is also strippable on rough surfaces (walls, stones, wood and other substrates with mineral ions). It can be used by consumers in daily life and help consumers on various substrates that need to be shielded, protected or antiviral, especially substrates that need antiviral, such as (walls, stones, door handles, door frames, glass windows, public PC seats or disposable express packaging, etc.) Various substrates that are often touched in daily life but not frequently disinfected, adding an antiviral coating to these substrates can reduce the residue of bacteria and viruses on these substrates within a few days.

[0103] The main advantages of the household multifunctional water-based strippable antiviral coating composition of the present invention include:

[0104] (1) The coating composition of the present invention is universally applicable for indoor and outdoor use, and can cover the surface of a substrate to isolate it from external corrosion (scratches, scratches, aging, pollution, dust, oil stains, fingerprints, etc.).

[0105] (2) The present invention solves the technical difficulty of making the strippable coating strippable on rough surfaces (walls, stones, wood and other substrates with mineral ions) by using a special phase separation technology. The technology is to mix a wax emulsion (brand: CT3342) to which a divalent ion-intolerant emulsifier is added into Dow PC-25 water-based hydrophobic acrylic emulsion, and form a phase separation structure with another hydrophilic acrylic resin (XK-85) in the formula. The emulsifier in the mixed wax emulsion will form a special state of water-oil balance and will be evenly distributed in the two emulsions first. After being coated on the stone or wall, the emulsifier quickly aggregates after being disturbed by the divalent ions, and the emulsified wax emulsion quickly migrates to the hydrophobic emulsion phase layer, and increases the difference in the hydrophilic and hydrophobic balance of the two emulsions, so that the hydrophilic phase emulsion completely migrates to the surface of the stone to form the first film sealing layer. The hydrophobic emulsion will dry slowly and form the second film because it does not directly contact the substrate absorption layer and has a large molecular weight. Due to the difference in intermolecular forces caused by the hydrophilic and hydrophobic effects of the two coatings and the difference in molecular weight, coupled with the effect of wax, the second coating can be peeled off from the first surface, thus solving the problem of the peelable performance of the rough surface (walls, stones, wood and other substrates with mineral ions). For specific principles, see Figure 1 :

[0106] (3) The coating composition of the present invention can meet the construction requirements of a variety of substrates (e.g., wall, stone, tinplate, wood, cold-rolled steel, glass, tile, stainless steel, aluminum plate, ABS, PS, PVC, PET), and is a multi-purpose coating composition.

[0107] (4) The film-forming material of the present invention includes Dow PC-25 water-based hydrophobic phase acrylic emulsion, and its technology adopts the macromolecular "steric hindrance" mode, that is, the polar groups of the latex particles are effectively blocked by the macromolecular coating principle, reducing the contact opportunity with the substrate, and obtaining a water-based peelable coating resin with weak adhesion but relatively easy to peel without affecting the cohesive force of the paint film. The antiviral material will be free around the polar group, and the virus will destroy the cell membrane of the virus after contacting the paint film, thereby killing the virus and protecting the substrate.

[0108] (5) The coating composition of the present invention has an antiviral effect. The nano antibacterial material includes a nano cuprous oxide solution or a silver ion antibacterial material. Both nano antiviral materials have the following advantages: through the electrostatic interaction between metal particles and charged groups on the surface of the cell membrane, the virus membrane is damaged and its function is destroyed, thereby fundamentally preventing the growth and long-term residue of viruses on the paint film (transmitted through droplets or other means), preventing the spread of viruses due to contact with the substrate, and avoiding harm to social public safety.

[0109] (6) The coating composition of the present invention is a water-based coating composition, which is significantly different from traditional industrial strippable coatings in that it has low odor, dries quickly, is easy and quick to apply, is safe and environmentally friendly, is antiviral, and is suitable for home use, medical facilities, and public facilities that require special protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0110] Figure 1 The present invention is a schematic diagram of the preparation principle of the household multifunctional water-based strippable antiviral coating composition. DETAILED DESCRIPTION

[0111] In order to make the application, technical scheme and advantages of the present invention clearer, the present invention is described in detail in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not limited to the present invention. All simple improvements to the preparation method of the present invention under the premise of the present invention are within the protection scope of the present invention.

[0112] Example 1: A household multifunctional water-based peelable antiviral coating composition

[0113] A household multifunctional water-based strippable antiviral coating composition comprises the following components in parts by weight:

[0114] Table 1 Composition by weight of coating composition

[0115]

[0116]

[0117] It is prepared by the following steps:

[0118] S1. Add 5 to 10 parts of water in the reaction tank in proportion and stir, and control the speed at 200 to 300 rpm;

[0119] S2. Sequentially add a pH adjuster and a cosolvent and stir;

[0120] S3. Then add the nano-antibacterial material and add 0.1 to 1 parts of water, then increase the speed to 1500 rpm, stir and disperse for 15 minutes to obtain a mixed system Ⅰ;

[0121] S4. The rotation speed is reduced to 700 to 800 rpm, and the hydrophobic strippable resin mixed with the wax emulsion, the hydrophilic acrylic emulsion, the film-forming agent are added to the obtained mixed system Ⅰ in proportion and stirred;

[0122] The hydrophobic strippable resin mixed with wax emulsion comprises: Dow PC-25 water-based hydrophobic phase acrylic emulsion and wax emulsion CT3342, and the weight ratio of Dow PC-25 water-based hydrophobic phase acrylic emulsion to wax emulsion CT3342 is 5:1.

[0123] Preparation of the hydrophobic strippable resin mixed with wax emulsion:

[0124] a1. Dow PC-25 aqueous hydrophobic phase acrylic emulsion was first added to the reaction tank according to the ratio, and the dispersant speed was controlled at 600 rpm;

[0125] a2. Then add wax emulsion CT3342 and continue stirring for 8 to 10 minutes;

[0126] a3. The resulting mixed emulsion was sealed and stored to prepare a hydrophobic strippable resin mixed with a wax emulsion;

[0127] S5. Then, other additives (cosolvent, defoamer, thickener, mildew inhibitor, preservative) and substrate wetting agent are added to the reaction tank in sequence and stirred;

[0128] S6. Finally, the remaining water was added, the speed was maintained at 1000 to 1200 rpm, the mixture was stirred for 30 minutes and adjusted to the desired viscosity to obtain the coating composition;

[0129] The pH value of the obtained coating composition needs to be controlled at 8.5-9.5.

[0130] In order to verify the technical effect of the household multifunctional water-based strippable antiviral coating composition of the present invention, a comparative experiment was designed:

[0131] The preparation methods of Comparative Examples 1 to 3 are basically the same as those of Example 1, and the main differences are the film-forming substance and whether wax emulsion is added; the difference between Comparative Example 4 and Example 1 is that different antiviral materials are added. The differences between them are detailed in Table 1.

[0132] The differences in paint film performance and strippability evaluation between the examples and the comparative examples are shown in Tables 2 and 3.

[0133] The difference in antiviral performance between the paint films of Example 1 and Comparative Example 4 is shown in Table 4.

[0134] Table 2 Paint film properties

[0135]

[0136] Peelability score: 5 points: peelable, the paint film is not broken when pulled; 4 points: peelable, the paint film is occasionally broken when pulled; 3 points: peelable, the paint film will break when pulled; 2 points: not easy to peel; 1 point: almost impossible to peel; 0 points: impossible to peel.

[0137] Table 3 Peelability Evaluation

[0138]

[0139]

[0140] Peelability score: 5 points: peelable, the paint film is not broken when pulled; 4 points: peelable, the paint film is occasionally broken when pulled; 3 points: peelable, the paint film will break when pulled; 2 points: not easy to peel; 1 point: almost impossible to peel; 0 points: impossible to peel.

[0141] Table 4 Microbiological analysis test results

[0142]

[0143] From the above performance tests, it can be seen that Example 1 is the emulsion configuration combination method designed by the present invention, Comparative Example 1 is a common acrylic emulsion, Comparative Example 2 is a different mixing method, Comparative Example 3 is a comparison of different premixed additions and Comparative Example 4 is a comparison of adding different types of antiviral materials. Example 1 has a fast drying time, and can be peeled off the fastest, has the highest score, has the best stain resistance and the best antiviral performance characteristics.

[0144] By scoring the strippability of different substrates, the strippability of Example 1 on various substrates is significantly better than that of Comparative Examples 1, 2, 3, and 4. Comparative Example 1 is basically not strippable on most substrates. After Comparative Example 2 was tested in a different mixing method from Example 1, the stain resistance of Comparative Example 2 was lower than that of Example 1, and the strippability on the rough surface was also significantly lower than that of Example 1, which did not meet the expectations of harshness on the rough surface. Comparative Example 3 was not premixed and added. After the scraping film was prepared, particles appeared on the surface of the dry film, the tensile elongation was significantly lower than that of Example 1, the stain resistance was also worse than that of Example 1, and the strippability was also significantly lower than that of Example 1. At the same time, breakage occurred during peeling. Comparative Example 4 added different types and grades of antiviral materials, and the results of microbial analysis showed that the antiviral requirements were not met.

[0145] The present invention successfully solves the technical difficulty that the strippable coating is also strippable on rough surfaces such as (walls, stones, wood, etc.) through the phase separation technology between emulsions. At the same time, the microbial detection results of the nano antiviral material added according to the addition ratio of Example 1 in Table 4 can achieve a relatively high antiviral ability, and compared with the comparative example 4 where the nano zinc oxide antiviral material is added, the antiviral performance is better and meets the (H3N2) Level I requirements.

[0146] To sum up, the above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the disclosed technical content are regarded as equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

[0147] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0148] The experimental methods without specific conditions in the present invention are usually carried out under conventional conditions or conditions recommended by the manufacturer.

[0149] Unless otherwise stated, the various optimization technical solutions in the present invention can be combined with each other.

[0150] Unless otherwise indicated, percentages and parts are by weight.

[0151] Experimental methods without specific conditions specified in the instructions and examples are usually carried out under conventional conditions or conditions recommended by the manufacturers.

[0152] Unless otherwise defined, all professional and scientific terms used herein have the same meaning as those familiar to those skilled in the art. In addition, any method and material similar or equivalent to the described content can be applied to the method of the present invention.

Claims

1. A household multifunctional water-based strippable antiviral coating composition, characterized in that: It comprises the following components in parts by weight: 45-70 parts of film-forming substances, 0.1-2.2 parts of nano antibacterial materials, 0.1-1 parts of substrate wetting agents, 0.1-1 parts of pH regulators, 1-5.0 parts of film-forming aids, 1-20.0 parts of water and 1-5.0 parts of other additives; And the pH value of the coating composition is 8.5 to 9.5; The film-forming material includes: a hydrophobic strippable resin mixed with a wax emulsion and a hydrophilic acrylic emulsion; The hydrophobic strippable resin mixed with wax emulsion comprises: Dow PC-25 water-based hydrophobic phase acrylic emulsion and wax emulsion CT3342, and the weight ratio of Dow PC-25 water-based hydrophobic phase acrylic emulsion to wax emulsion CT3342 is 5:

1.

2. The household multifunctional water-based strippable antiviral coating composition according to claim 1, characterized in that: The hydrophilic acrylic emulsion is XK-85 hydrophilic acrylic emulsion.

3. The household multifunctional water-based strippable antiviral coating composition according to claim 1, characterized in that: It includes one or a combination of the following features: The substrate wetting agent is a dimethyl-structured organic silicon surfactant; The film-forming aid is an alcohol ester film-forming aid; The pH regulator is one or a combination of organic alcohol amine, potassium methyl silicate, sodium hydroxide, and sodium benzenesulfonate; The other additives include the following components in parts by weight: 0.1 to 1 parts of cosolvent, 0.1 to 3 parts of thickener, 0.1 to 1 parts of defoamer, 0.1 to 4 parts of mildewproofing agent, 0.1 to 4 parts of preservative.

4. The household multifunctional water-based strippable antiviral coating composition according to claim 3, characterized in that: The mass ratio of the cosolvent: thickener: defoamer: mildew inhibitor: preservative is (0.1-1): (1-3): (0.1-0.6): (0.1-1): (0.1-1).

5. The household multifunctional water-based strippable antiviral coating composition according to claim 1, characterized in that: The nano antibacterial material comprises a nano cuprous oxide solution and a silver ion antibacterial material, and the weight ratio of the nano cuprous oxide solution to the silver ion antibacterial material is 1 to 2.2:1; The nano cuprous oxide solution comprises the following components in parts by weight: 2-10 parts of organic amine solution, 20-40 parts of nano cuprous oxide, 40-60 parts of water; The pH value of the nano cuprous oxide solution is 12-14.

6. The household multifunctional water-based strippable antiviral coating composition according to claim 5, characterized in that: It includes one or a combination of the following features: The nano cuprous oxide is a red powder with a particle size between 2 and 4 μm. The silver ion antibacterial material adopts silver ion coupling type antiviral material.

7. The household multifunctional water-based strippable antiviral coating composition according to claim 5, characterized in that: The nano antibacterial material comprises the following preparation steps: S1. Add an acceptable amount of water in the reaction tank in proportion and control the disperser speed at 300 to 500 rpm; S2. Then add the organic amine solution and nano cuprous oxide in sequence, and continue to disperse for 8 to 10 minutes; S3. The obtained mixed solution is sealed and stored, and allowed to stand for 30 to 120 minutes to prepare the nano antibacterial material.

8. The method for preparing the household multifunctional water-based strippable antiviral coating composition according to any one of claims 1 to 7, characterized in that: It comprises the following preparation steps: A. Preparation of hydrophobic strippable resin mixed with wax emulsion: a1. Dow PC-25 aqueous hydrophobic phase acrylic emulsion was first added to the reaction tank according to the ratio, and the dispersant speed was controlled at 600 rpm; a2. Then add wax emulsion CT3342 and continue stirring for 8 to 10 minutes; a3. The resulting mixed emulsion was sealed and stored to prepare a hydrophobic strippable resin mixed with a wax emulsion; B. Preparation of coating composition: It comprises the following preparation steps: b1. Add 5 to 10 parts of water in the reaction tank in proportion and stir; b2. Sequentially add pH adjuster, cosolvent and stir; b3. Then add the nano-antibacterial material and add 0.1 to 1 parts of water, and then increase the speed and stir to obtain a mixed system Ⅰ; b4 reduce the speed, to the obtained mixed system Ⅰ sequentially added in proportion to the wax emulsion mixed with a hydrophobic strippable resin, a hydrophilic acrylic emulsion, a film-forming agent and stirred; b5. Then add other additives and substrate wetting agents to the reaction tank and stir; b6. Finally, the remaining portion of water was added, stirred and adjusted to the desired viscosity to obtain the coating composition; The pH value of the obtained coating composition needs to be controlled at 8.5-9.

5.

9. A coating, characterized in that: The coating is formed by coating the household multifunctional water-based strippable antiviral coating composition according to claim 1.

10. A product, characterized in that: The article comprises the coating according to claim 9, and a substrate; The coating is located on the surface of the substrate.

Images