CN111231039A - Antibacterial, antiviral and mildewproof wooden product and preparation method thereof - Google Patents
Antibacterial, antiviral and mildewproof wooden product and preparation method thereof Download PDFInfo
- Publication number
- CN111231039A CN111231039A CN202010161671.1A CN202010161671A CN111231039A CN 111231039 A CN111231039 A CN 111231039A CN 202010161671 A CN202010161671 A CN 202010161671A CN 111231039 A CN111231039 A CN 111231039A
- Authority
- CN
- China
- Prior art keywords
- antibacterial
- antiviral
- mildewproof
- nano
- titanium dioxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/007—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process employing compositions comprising nanoparticles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/12—Impregnating by coating the surface of the wood with an impregnating paste
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/20—Removing fungi, molds or insects
Abstract
The invention relates to an antibacterial, antiviral and mildewproof wood product and a preparation method thereof, wherein the wood product comprises a wooden base material layer and an antibacterial, antiviral and mildewproof layer, and the antibacterial, antiviral and mildewproof layer comprises nano titanium dioxide and nano bismuth tungstate in a mass ratio of 1:1-1: 5. According to the invention, the nano titanium dioxide and the nano bismuth tungstate are adopted in a specific mass proportion, and the wood product has excellent antibacterial, antiviral and mildewproof performances through the synergistic effect of the titanium dioxide and the nano bismuth tungstate, the antibacterial rate to escherichia coli and staphylococcus aureus can be improved to more than 99%, the antiviral activity rate to H1N1 and H3N2 influenza viruses is as high as more than 99%, and the mildewproof grade is 0; in addition, the wood product can degrade VOC gases such as formaldehyde and the like, has the effect of purifying air, and has the advantages of no toxicity, no irritation to skin, long-lasting antibacterial, antiviral and mildewproof performance and the like.
Description
Technical Field
The invention relates to the technical field of wood products, in particular to an antibacterial, antiviral and mildewproof wood product and a preparation method thereof.
Background
The wood is used as a precious resource given to people by nature, is processed into various wood products, and is widely applied to areas such as home decoration, offices, public places and the like. Along with the improvement of the life quality of people, the requirements of people on wood products are higher and higher, and the requirements on beauty, elegance, fashion, naturalness and conciseness are required, and the requirements on health and environmental protection are also required. However, the wooden products are easy to grow harmful substances such as bacteria, viruses and molds on the surfaces during long-term use. At present, the sanitation of the surface of a wooden product is usually maintained by adopting a method of externally spraying medicines, but the method has short time effect, harmful substances such as bacteria, viruses and molds are easy to breed again, and the medicines are required to be frequently externally sprayed, so that the cost of resisting bacteria, viruses and molds is high.
CN106009744A discloses an environment-friendly antibacterial wood product, which is prepared from the following raw materials in parts by weight: 60-100 parts of wood fiber, 20-50 parts of bagasse, 2-5 parts of chitosan, 2-5 parts of tourmaline powder, 2-5 parts of nano zinc oxide powder, 0.5-3 parts of ethylene-vinyl acetate copolymer, 3-5 parts of butyl acrylate, 3-5 parts of zinc stearate, 3-5 parts of rosin pentaerythritol ester, 5-15 parts of adhesive, 0.5-2 parts of sodium lignosulfonate, 3-5 parts of turpentine, 3-5 parts of modified zeolite powder and 0.5-3 parts of flame retardant. Although the environment-friendly antibacterial wood product comprises chitosan, tourmaline powder and nano zinc oxide powder with antibacterial effect, the environment-friendly antibacterial wood product does not relate to the aspect of antivirus.
CN107868592A discloses an antibacterial coating for wood products, which comprises the following components in percentage by weight: 18-25 parts of Chinese herbal medicine, 0.2-0.3 part of sodium tripolyphosphate, 0.2-0.3 part of hydroxymethyl cellulose, 0.1-0.2 part of sodium alginate, 0.1-0.2 part of polyvinyl alcohol, 2-3 parts of water glass, 13-16 parts of alkyd resin, 2-5 parts of epoxy resin, 0.1-0.2 part of polypropylene wax, 5-8 parts of talcum powder, 1-2 parts of montmorillonite powder, 2-3 parts of ammonia water, 0.5-0.8 part of propylene glycol and 0.1-0.2 part of dimethyl silicone oil. Although the antibacterial coating for the wood products is added with the Chinese herbal medicines with antibacterial effect, the Chinese herbal medicines serving as natural antibacterial agents have the problems of reduced antibacterial effect in the long-term use process and the defects of common antibacterial effect, high cost and the like, and the antibacterial coating for the wood products does not relate to the aspect of virus resistance.
CN204380255U discloses a wooden toy that can scribble many times, wooden toy contains the wooden toy body, the surface of wooden toy body scribble and be equipped with waterproof, mould proof material layer, and waterproof, mould proof material layer be wood wax oil. Although the wood wax oil has certain antibacterial, antiviral and mildewproof performances, the antibacterial, antiviral and mildewproof performances are general, and the requirements of antibacterial, antiviral and mildewproof of wood products under the condition of long-term use cannot be met.
In view of the above, there is a need to develop an antibacterial, antiviral and antifungal wood product and a method for preparing the same.
Disclosure of Invention
In order to solve the technical problems, the invention provides an antibacterial, antiviral and mildewproof wood product and a preparation method thereof, wherein the wood product comprises an antibacterial, antiviral and mildewproof layer, and the wood product has antibacterial, antiviral and mildewproof performance, can degrade VOC gases such as formaldehyde and the like to purify air by the synergistic effect of the nano titanium dioxide and the nano bismuth tungstate under a specific mass ratio, and has the advantages of no toxicity, no irritation to skin, long-acting and lasting antibacterial, antiviral and mildewproof performance and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
one of the purposes of the invention is to provide an antibacterial, antiviral and mildewproof wood product, which comprises a wooden base material layer and an antibacterial, antiviral and mildewproof layer, wherein the antibacterial, antiviral and mildewproof layer comprises nano titanium dioxide and nano bismuth tungstate, and the mass ratio of the nano titanium dioxide to the nano bismuth tungstate is 1:1-1: 5.
The nano titanium dioxide and the nano bismuth tungstate with the specific mass ratio have a synergistic effect, and after the two photocatalytic semiconductors are compounded, the staggering of the valence bands can be realized, the valence band width of the semiconductors can be shortened, and the photocatalytic performances of the two semiconductors can be improved; in addition, both belong to nano-scale materials, and the larger specific surface area is beneficial to capturing more active free radicals; therefore, the nano titanium dioxide and the nano bismuth tungstate with a specific mass ratio can enhance the antibacterial, antiviral and mildewproof performance, the antibacterial rate to escherichia coli and staphylococcus aureus can be improved to more than 99%, the antiviral activity rate to H1N1 and H3N2 influenza viruses is as high as more than 99%, and the mildewproof grade is 0;
in addition, under the action of illumination, the nano titanium dioxide and the nano bismuth tungstate can adsorb O on the surface2Reduction to negative oxygen ion (O)2 -) O produced2 -Can further react with water to generate peroxide hydroxyl free radical (OOH), hydroxyl free radical (OH) and h + with strong oxidizability, thereby gradually oxidizing and degrading VOC gases such as formaldehyde and the like into CO2、H2O and H2CO3And the function of purifying air is achieved.
The mass ratio of the nano titanium dioxide to the nano bismuth tungstate in the antibacterial, antiviral and antifungal layer is 1:1-1:5, such as 1:1, 1:1.5, 1:2, 1:2.5, 1:3, 1:3.5, 1:4, 1:4.5 or 1:5, but the antibacterial, antiviral and antifungal layer is not limited to the recited numerical values, and other numerical values in the numerical value range are also applicable.
In a preferred embodiment of the present invention, the antibacterial, antiviral and antifungal layer comprises nano titanium dioxide and nano bismuth tungstate in a mass ratio of 1:1 to 1:3, such as 1:1, 1:1.2, 1:1.4, 1:1.5, 1:1.7, 1:1.9, 1:2, 1:2.3, 1:2.5, 1:2.7 or 1:3, but not limited to the values listed, and other values not listed in the range of the values are also applicable.
As a preferable technical scheme of the invention, the nano titanium dioxide is silver-doped nano titanium dioxide.
Preferably, the silver-doped nano titanium dioxide is prepared by adopting the following method, and the preparation method comprises the following steps:
(1) dropping tetrabutyl titanate into absolute ethyl alcohol and stirring until the mass ratio of tetrabutyl titanate to absolute ethyl alcohol is 2:15 to obtain a mixed solution; preparing a silver nitrate water solution with the mass concentration of 50%;
(2) dripping the silver nitrate aqueous solution obtained in the step (1) into the mixed solution and stirring, controlling the dripping speed to be 10-20 drops/min until the silver nitrate accounts for 3-9% of the mass of the whole solution system, and then standing for 24-36h at the temperature of 20-30 ℃ to form gel;
(3) calcining the gel obtained in the step (2) in a muffle furnace at the temperature of 550-600 ℃ for 1-2h, and then grinding the gel by using an agate mortar to obtain the silver-doped nano titanium dioxide;
wherein, the dropping speed in the step (2) is 10-20 drops/min, such as 10 drops/min, 12 drops/min, 14 drops/min, 15 drops/min, 17 drops/min, 19 drops/min or 20 drops/min, the silver nitrate accounts for 3-9%, such as 3%, 4%, 5%, 6%, 7%, 8% or 9%, etc., of the whole solution system, the standing temperature is 20-30 ℃, such as 20 ℃, 22 ℃, 24 ℃, 25 ℃, 26 ℃, 28 ℃ or 30 ℃, etc., the standing time is 24-36h, such as 24h, 26h, 28h, 30h, 32h, 34h or 36h, etc., the calcination temperature in the step (3) is 550 ℃, such as 550 ℃, 560 ℃, 570 ℃, 580 ℃, 590 ℃ or 600 ℃, the calcination time is 1-2h, such as 1h, 2h, etc, 1.2h, 1.4h, 1.5h, 1.7h, 1.9h or 2h, etc., but the above numerical ranges are not limited to the enumerated values, and other numerical values in the numerical ranges not enumerated are also applicable.
The silver-doped nano titanium dioxide prepared by the invention not only has the photocatalysis and oxidizability of nano titanium dioxide, but also has more functions due to the loading of silver ions: on one hand, silver ions can penetrate through cell membranes through the action of charge attraction and the cell membranes of pathogenic bacteria, so that the pathogenic bacteria lose activity; on the other hand, silver ions can penetrate cells and are combined with nucleic acid of pathogenic bacteria to destroy the reproductive capacity of the pathogenic bacteria, so that the pathogenic bacteria are further killed; in addition, the silver-doped nano titanium dioxide can effectively control the release rate of silver ions, solve the problem of color change of the silver ions and prolong the antibacterial, antiviral and mildewproof durability of the silver ions.
In a preferred embodiment of the present invention, the nano-titania has a particle size of 5 to 50nm, for example, 5nm, 10nm, 15nm, 20nm, 25nm, 30nm, 35nm, 40nm, 45nm or 50nm, but the particle size is not limited to the above-mentioned values, and other values not shown in the above-mentioned range are also applicable.
Preferably, the nano bismuth tungstate has a particle size of 5 to 10nm, for example, 5nm, 5.5nm, 6nm, 6.5nm, 7nm, 7.5nm, 8nm, 8.5nm, 9nm, 9.5nm or 10nm, but is not limited to the enumerated values, and other values not enumerated within the numerical range are also applicable.
As a preferable technical scheme of the invention, the antibacterial, antiviral and mildewproof layer is coated on the upper surface and the lower surface of the wooden base material layer.
Preferably, the thickness of the antibacterial, antiviral and antifungal layer is 10 to 50 μm, for example, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm or 50 μm, but is not limited to the recited values, and other values not recited in the range of the values are also applicable.
According to the antibacterial, antiviral and mildewproof wood product, the antibacterial, antiviral and mildewproof layers are symmetrically arranged on the two sides of the wooden base material layer, so that the antibacterial, antiviral and mildewproof effects on harmful substances from the two sides can be achieved, and the antibacterial, antiviral and mildewproof performance can be comprehensively guaranteed.
As a preferred technical solution of the present invention, the wooden product is any one of wooden toys, wooden furniture, wooden stationery or wooden sporting goods, and those skilled in the art can make reasonable selection according to actual situations.
The second purpose of the invention is to provide a preparation method of the antibacterial, antiviral and mildewproof wood product, which comprises the following steps:
(1) mixing nano titanium dioxide, nano bismuth tungstate and water-based paint to prepare the antibacterial, antiviral and mildewproof paint;
(2) and (2) coating the antibacterial, antiviral and mildewproof coating obtained in the step (1) on the wood substrate layer to prepare the antibacterial, antiviral and mildewproof wood product.
The "coating on the wooden base material layer" in the step (2) of the present invention may mean single-side coating. The coating can also be applied to the upper surface and the lower surface, and can be reasonably selected by a person skilled in the art according to actual conditions.
As a preferable technical scheme of the invention, the water-based paint in the step (1) comprises polyurethane and/or acrylic acid, and the person skilled in the art can reasonably select the water-based paint according to actual situations.
The water-based paint disclosed by the invention takes water as a solvent, eliminates the fire hazard during construction, adopts a small amount of low-toxicity alcohol ether organic solvent, reduces air pollution, improves the operating environment conditions, and has a series of advantages of plump paint film, glittering and translucent property, good flexibility, water resistance, wear resistance, aging resistance, yellowing resistance, fast drying, convenience in use and the like.
Preferably, the nano titanium dioxide in the step (1) accounts for 0.5-2% of the water-based paint by mass percent, such as 0.5%, 0.7%, 0.9%, 1%, 1.2%, 1.4%, 1.5%, 1.6%, 1.8% or 2%, but not limited to the enumerated values, and other non-enumerated values in the numerical range are also applicable.
Preferably, the nano bismuth tungstate in the step (1) accounts for 1.5-6% of the aqueous paint by mass percent, such as 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5% or 6%, but not limited to the enumerated values, and other non-enumerated values in the numerical range are also applicable.
Preferably, the temperature of the mixing in step (1) is 20-40 deg.C, such as 20 deg.C, 22 deg.C, 24 deg.C, 25 deg.C, 27 deg.C, 29 deg.C, 30 deg.C, 33 deg.C, 35 deg.C, 36 deg.C, 38 deg.C or 40 deg.C, but not limited to the recited values, and other values not recited in the range of the recited values are also applicable.
Preferably, the mixing time in step (1) is 30-50min, such as 30min, 32min, 34min, 35min, 36min, 38min, 40min, 42min, 44min, 45min, 47min, 49min or 50min, but not limited to the recited values, and other non-recited values in the range of values are also applicable.
Preferably, the mixing in step (1) is carried out at a stirring speed of 30 to 50r/min, such as 30r/min, 31r/min, 33r/min, 35r/min, 36r/min, 38r/min, 40r/min, 42r/min, 44r/min, 45r/min, 47r/min, 49r/min or 50r/min, but not limited to the values listed, and other values not listed in this range of values are equally suitable.
As a preferred technical solution of the present invention, the coating method in step (2) is any one or a combination of at least two of spraying, rolling, dipping or brushing, and typical but non-limiting examples of the combination are: the combination of spraying and rolling, the combination of rolling and dipping, the combination of dipping and coating or the combination of spraying and coating, etc. can be reasonably selected by the person skilled in the art according to the actual situation.
Preferably, the temperature of the coating in step (2) is 15 to 50 ℃, for example 15 ℃, 20 ℃, 25 ℃, 30 ℃, 35 ℃, 40 ℃, 45 ℃ or 50 ℃, etc., but is not limited to the recited values, and other values not recited in the range of values are equally applicable.
As a preferred technical scheme of the invention, the preparation method comprises the following steps:
(1) mixing nano titanium dioxide, nano bismuth tungstate and water-based paint to prepare the antibacterial, antiviral and mildewproof paint;
wherein, according to the mass percentage, the nano titanium dioxide accounts for 0.5-2% of the water-based paint, and the nano bismuth tungstate accounts for 1.5-6% of the water-based paint;
the mixing temperature is 20-40 ℃, the mixing time is 30-50min, and the stirring speed is 30-50 r/min;
(2) coating the antibacterial, antiviral and mildewproof coating obtained in the step (1) on the wooden base material layer at 15-50 ℃ to prepare the antibacterial, antiviral and mildewproof wooden product;
wherein, the coating method is any one or the combination of at least two of spraying, rolling, dipping and brushing.
Compared with the prior art, the invention has at least the following beneficial effects:
(1) the antibacterial, antiviral and mildewproof wood product comprises an antibacterial, antiviral and mildewproof layer containing nano titanium dioxide and nano bismuth tungstate, and has excellent antibacterial, antiviral and mildewproof performance through the synergistic effect of the nano titanium dioxide and the nano bismuth tungstate under a specific mass ratio, the antibacterial rate to escherichia coli and staphylococcus aureus can be improved to be more than 99%, the antiviral activity rate to H1N1 and H3N2 influenza viruses is as high as more than 99%, and the mildewproof grade is 0;
(2) the antibacterial, antiviral and mildewproof wood product comprises an antibacterial, antiviral and mildewproof layer containing nano titanium dioxide and nano bismuth tungstate, and can convert O into O under the action of illumination2Reduction ofIs a negative oxygen ion (O)2 -) Further, VOC gases such as formaldehyde and the like attached to the surface of the wooden product are oxidized and degraded, and the air purification effect is achieved;
(3) according to the antibacterial, antiviral and mildewproof wood product, the nano titanium dioxide and the nano bismuth tungstate are coated on the wooden base material through the water-based paint to form the antibacterial, antiviral and mildewproof layer, so that the antibacterial, antiviral and mildewproof wood product has good waterproof performance, oil-proof performance and durability, and has the advantages of no toxicity, no irritation to skin, long-acting and lasting antibacterial, antiviral and mildewproof performance and the like;
(4) the preparation method of the antibacterial, antiviral and mildewproof wooden product does not use polluting chemical materials, has the characteristic of environmental friendliness, and also has the advantages of low cost, simple method, mild conditions and the like.
Detailed Description
In order to better illustrate the present invention and facilitate the understanding of the technical solutions of the present invention, the present invention is further described in detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are defined by the claims.
Typical but non-limiting examples of the invention are as follows:
example 1
The embodiment provides an antibacterial, antiviral and mildewproof wood product, which comprises a wooden base material layer and an antibacterial, antiviral and mildewproof layer, wherein the antibacterial, antiviral and mildewproof layer comprises silver-doped nano titanium dioxide and nano bismuth tungstate (bismuth tungstate) (in a mass ratio of 1: 2)
13595-87-4 bismuth tungstate);
the preparation method of the silver-doped nano titanium dioxide comprises the following steps:
(1) dropping tetrabutyl titanate into absolute ethyl alcohol and stirring until the mass ratio of tetrabutyl titanate to absolute ethyl alcohol is 2:15 to obtain a mixed solution; preparing a silver nitrate water solution with the mass concentration of 50%;
(2) dripping the silver nitrate aqueous solution obtained in the step (1) into the mixed solution and stirring, controlling the dripping speed to be 15 drops/min until the silver nitrate accounts for 6% of the mass of the whole solution system, and then standing for 30h at 25 ℃ to form gel;
(3) placing the gel obtained in the step (2) in a 600 ℃ muffle furnace to calcine for 1.5h, and then grinding the gel by using an agate mortar to obtain the silver-doped nano titanium dioxide;
the particle size of the silver-doped nano titanium dioxide is 20 nm;
the particle size of the nano bismuth tungstate is 5 nm;
the antibacterial, antiviral and mildewproof layers are coated on the upper surface and the lower surface of the wooden base material layer;
the thickness of the antibacterial, antiviral and mildewproof layer is 30 microns;
the preparation method of the antibacterial, antiviral and mildewproof wood product comprises the following steps:
(1) mixing silver-doped nano titanium dioxide with the particle size of 20nm, nano bismuth tungstate with the particle size of 5nm and water-based paint containing polyurethane and acrylic acid to prepare antibacterial, antiviral and mildewproof paint;
wherein, according to the mass percentage, the silver-doped nano titanium dioxide accounts for 1 percent of the water-based paint, and the nano bismuth tungstate accounts for 2 percent of the water-based paint;
the mixing temperature is 30 ℃, the mixing time is 40min, and the stirring speed is 40 r/min;
(2) and (2) spraying the antibacterial, antiviral and mildewproof coating obtained in the step (1) on the upper surface and the lower surface of the wooden base material layer at the temperature of 30 ℃ to form an antibacterial, antiviral and mildewproof layer with the thickness of 30 micrometers, and preparing the antibacterial, antiviral and mildewproof wooden product.
Example 2
The embodiment provides an antibacterial, antiviral and mildewproof wood product, which comprises a wooden base material layer and an antibacterial, antiviral and mildewproof layer, wherein the antibacterial, antiviral and mildewproof layer comprises silver-doped nano titanium dioxide and nano bismuth tungstate (bismuth tungstate) (in a mass ratio of 1: 1)
13595-87-4 bismuth tungstate);
the preparation method of the silver-doped nano titanium dioxide comprises the following steps:
(1) dropping tetrabutyl titanate into absolute ethyl alcohol and stirring until the mass ratio of tetrabutyl titanate to absolute ethyl alcohol is 2:15 to obtain a mixed solution; preparing a silver nitrate water solution with the mass concentration of 50%;
(2) dripping the silver nitrate aqueous solution obtained in the step (1) into the mixed solution and stirring, controlling the dripping speed to be 10 drops/min until the silver nitrate accounts for 3% of the mass of the whole solution system, and then standing for 24 hours at 20 ℃ to form gel;
(3) placing the gel obtained in the step (2) in a muffle furnace at 550 ℃ for calcining for 1h, and then grinding the gel by using an agate mortar to obtain the silver-doped nano titanium dioxide;
the particle size of the silver-doped nano titanium dioxide is 5 nm;
the particle size of the nano bismuth tungstate is 8 nm;
the antibacterial, antiviral and mildewproof layers are coated on the upper surface and the lower surface of the wooden base material layer;
the thickness of the antibacterial, antiviral and mildewproof layer is 10 microns;
the preparation method of the antibacterial, antiviral and mildewproof wood product comprises the following steps:
(1) mixing silver-doped nano titanium dioxide with the particle size of 5nm, nano bismuth tungstate with the particle size of 8nm and water-based paint containing polyurethane to prepare the antibacterial, antiviral and mildewproof coating;
wherein, according to the mass percentage, the silver-doped nano titanium dioxide accounts for 1 percent of the water-based paint, and the nano bismuth tungstate accounts for 1 percent of the water-based paint;
the mixing temperature is 40 ℃, the mixing time is 30min, and the stirring speed is 30 r/min;
(2) and (2) spraying the antibacterial, antiviral and mildewproof coating obtained in the step (1) on the upper surface and the lower surface of the wooden base material layer at 50 ℃ to form an antibacterial, antiviral and mildewproof layer with the thickness of 10 microns, and preparing the antibacterial, antiviral and mildewproof wooden product.
Example 3
This embodiment provides an antibacterial antiviral moldproof woodwork, the woodworkComprises a wooden base material layer and an antibacterial antiviral mildew-proof layer, wherein the antibacterial antiviral mildew-proof layer comprises silver-doped nano titanium dioxide and nano bismuth tungstate (bismuth tungstate) in a mass ratio of 1:3
13595-87-4 bismuth tungstate);
the preparation method of the silver-doped nano titanium dioxide comprises the following steps:
(1) dropping tetrabutyl titanate into absolute ethyl alcohol and stirring until the mass ratio of tetrabutyl titanate to absolute ethyl alcohol is 2:15 to obtain a mixed solution; preparing a silver nitrate water solution with the mass concentration of 50%;
(2) dripping the silver nitrate aqueous solution obtained in the step (1) into the mixed solution and stirring, controlling the dripping speed to be 20 drops/min until the silver nitrate accounts for 9% of the mass of the whole solution system, and then standing for 36h at 30 ℃ to form gel;
(3) placing the gel obtained in the step (2) in a 600 ℃ muffle furnace for calcining for 2h, and then grinding the gel by using an agate mortar to obtain the silver-doped nano titanium dioxide;
the particle size of the silver-doped nano titanium dioxide is 50 nm;
the particle size of the nano bismuth tungstate is 10 nm;
the antibacterial, antiviral and mildewproof layers are coated on the upper surface and the lower surface of the wooden base material layer;
the thickness of the antibacterial, antiviral and mildewproof layer is 50 microns;
the preparation method of the antibacterial, antiviral and mildewproof wood product comprises the following steps:
(1) mixing silver-doped nano titanium dioxide with the particle size of 50nm, nano bismuth tungstate with the particle size of 10nm and acrylic acid-containing water-based paint to prepare the antibacterial, antiviral and mildewproof paint;
wherein, according to the mass percentage, the silver-doped nano titanium dioxide accounts for 0.5 percent of the water-based paint, and the nano bismuth tungstate accounts for 1.5 percent of the water-based paint;
the mixing temperature is 20 ℃, the mixing time is 50min, and the stirring speed is 50 r/min;
(2) and (2) spraying the antibacterial, antiviral and mildewproof coating obtained in the step (1) on the upper surface and the lower surface of the wooden base material layer at 15 ℃ to form an antibacterial, antiviral and mildewproof layer with the thickness of 50 micrometers, and preparing the antibacterial, antiviral and mildewproof wooden product.
Example 4
This example provides an antibacterial, antiviral, and mildewproof wooden product which is identical to that of example 1 except that the modification is that "the antibacterial, antiviral, and mildewproof layer includes silver-doped nano titanium dioxide and nano bismuth tungstate at a mass ratio of 1: 5".
Example 5
This example provides an antibacterial, antiviral, and mildewproof wooden product, which is prepared using the same conditions as in example 1, except that the nano titanium dioxide is not silver-doped nano titanium dioxide, but rather, the purchased nano titanium dioxide (Tipaque a-100 anatase, japan stone resources).
Comparative example 1
This comparative example provides an antibacterial, antiviral, and mildewproof wooden article prepared in exactly the same manner as in example 1, except that the antibacterial, antiviral, and mildewproof layer included silver-doped nano titanium dioxide, but did not include nano bismuth tungstate.
Comparative example 2
This comparative example provides an antibacterial, antiviral and antifungal wood product which was identical to that of example 1 except that the antibacterial, antiviral and antifungal layer included nano bismuth tungstate, but did not include silver-doped nano titanium dioxide.
Comparative example 3
This comparative example provides an antibacterial, antiviral and antifungal wood product which was completely the same as in example 1 except that "the antibacterial, antiviral and antifungal layer was modified to be silver-doped nano titanium dioxide and nano bismuth tungstate in a mass ratio of 1: 0.5".
Comparative example 4
This comparative example provides an antibacterial, antiviral and antifungal wood product which was completely the same as in example 1 except that "the antibacterial, antiviral and antifungal layer was modified to be silver-doped nano titanium dioxide and nano bismuth tungstate in a mass ratio of 1: 6".
The antibacterial, antiviral and mildewproof wooden products of examples 1 to 5 and comparative examples 1 to 4 were subjected to relevant tests of antibacterial, antiviral and mildewproof performances as follows:
according to the determination method disclosed by the national standard GB/T21866-;
performing an antiviral performance test according to a test method disclosed in ISO 18184:2014(E) textile antiviral performance test method by taking H1N1 and H3N2 as test viruses;
according to a test method disclosed in GB/T24128-2009 plastic mildew resistance test method, carrying out a mildew resistance test by taking Aspergillus niger, Aureobasidium pullulans, Penicillium funiculosum, Chaetomium globosum and Gliocladium virens as test strains;
the results of the tests on the antibacterial, antiviral and mildewproof wood products of examples 1 to 5 are shown in table 1, and the results of the tests on the antibacterial, antiviral and mildewproof wood products of comparative examples 1 to 4 are shown in table 2.
TABLE 1
TABLE 2
From tables 1 and 2, the following points can be obtained:
(1) as can be seen from table 1, the antibacterial, antiviral and antifungal wood products according to examples 1 to 5 include an antibacterial, antiviral and antifungal layer containing nano titanium dioxide and nano bismuth tungstate, and the wood products have excellent antibacterial, antiviral and antifungal properties due to the synergistic effect of the nano titanium dioxide and the nano bismuth tungstate at a specific mass ratio: the antibacterial rate to escherichia coli and staphylococcus aureus is over 95 percent, and even can be improved to over 99 percent; the compound has good quick-acting killing effect on H1N1 and H3N2 influenza viruses, and the antiviral activity rates are both more than 95 percent and respectively more than 99 percent; the mildew-proof grades are all 0 grades;
(2) the results of comparative examples 1 to 4 show that the preferred mass ratio of the silver-doped nano titanium dioxide to the nano bismuth tungstate is 1:1 to 1: 3;
(3) comparing the results of examples 1-3 and 5, it can be seen that the antibacterial, antiviral and antifungal effects of the antibacterial, antiviral and antifungal wood product of example 5 are slightly reduced due to the use of the common nano titanium dioxide, i.e., the silver-doped nano titanium dioxide;
(4) comparing the results of the example 1 and the comparative examples 1-2, it can be seen that the antibacterial, antiviral and mildewproof wood product of the comparative examples 1-2 has greatly reduced antibacterial, antiviral and mildewproof performance because only single silver-doped nano titanium dioxide or nano bismuth tungstate is adopted; the antibacterial rate to escherichia coli and staphylococcus aureus is below 95%, and the minimum antibacterial rate is only 65.6%; the antiviral activity rate to H1N1 and H3N2 influenza viruses is below 95 percent, and respectively is only 70.2 percent; the mildew-proof grade is even as low as 2;
(5) the results of the comparative example 1 and the comparative examples 3 to 4 show that the silver-doped nano titanium dioxide and the nano bismuth tungstate with specific mass ratios have obvious synergistic antibacterial, antiviral and mildewproof effects.
In conclusion, the wood product comprises the antibacterial, antiviral and mildew-proof layer containing the nano titanium dioxide and the nano bismuth tungstate, and the wood product has excellent antibacterial, antiviral and mildew-proof performance through the synergistic effect of the nano titanium dioxide and the nano bismuth tungstate under a specific mass ratio, the antibacterial rate to escherichia coli and staphylococcus aureus can be improved to be more than 99%, the antiviral activity rate to H1N1 and H3N2 influenza viruses is as high as more than 95%, and the mildew-proof grade is 0; in addition, the wood product can degrade VOC gases such as formaldehyde and the like, has the effect of purifying air, and has the advantages of no toxicity, no irritation to skin, long-lasting antibacterial, antiviral and mildewproof performance and the like.
The applicant declares that the present invention illustrates the detailed structural features of the present invention through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be understood by those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, additions of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. The antibacterial, antiviral and mildewproof wood product is characterized by comprising a wooden base material layer and an antibacterial, antiviral and mildewproof layer, wherein the antibacterial, antiviral and mildewproof layer comprises nano titanium dioxide and nano bismuth tungstate in a mass ratio of 1:1-1: 5.
2. The wood product according to claim 1, wherein said antibacterial, antiviral, and mold resistant layer comprises nano titanium dioxide and nano bismuth tungstate in a mass ratio of 1:1 to 1:3.
3. A wood product according to claim 1 or 2, wherein the nano titania is silver doped nano titania.
4. A wood product according to any one of claims 1-3, wherein the nano titania has a particle size of 5-50 nm;
preferably, the particle size of the nano bismuth tungstate is 5-10 nm.
5. A wood product according to any one of claims 1 to 4, wherein the antibacterial, antiviral and antifungal layer is coated on the upper and lower surfaces of the wooden substrate layer;
preferably, the thickness of the antibacterial and antiviral mildew-proof layer is 10-50 μm.
6. The wood product according to any one of claims 1-5, wherein said wood product is any one of a wooden toy, wooden furniture, wooden stationery item, or wooden sporting item.
7. A method of making an antibacterial, antiviral, and mildewproof wood product, as set forth in any one of claims 1 to 6, comprising the steps of:
(1) mixing nano titanium dioxide, nano bismuth tungstate and water-based paint to prepare the antibacterial, antiviral and mildewproof paint;
(2) and (2) coating the antibacterial, antiviral and mildewproof coating obtained in the step (1) on the wood substrate layer to obtain the antibacterial, antiviral and mildewproof wood product.
8. The method according to claim 7, wherein the aqueous paint of step (1) comprises polyurethane and/or acrylic;
preferably, the nano titanium dioxide in the step (1) accounts for 0.5-2% of the water-based paint in percentage by mass;
preferably, the nano bismuth tungstate in the step (1) accounts for 1.5-6% of the water-based paint in percentage by mass;
preferably, the temperature of the mixing in the step (1) is 20-40 ℃;
preferably, the mixing time of step (1) is 30-50 min;
preferably, the stirring speed of the mixing in the step (1) is 30-50 r/min.
9. The production method according to claim 7 or 8, wherein the coating method in the step (2) is any one of spraying, rolling, dipping or brushing or a combination of at least two thereof;
preferably, the temperature of the coating in step (2) is 15-50 ℃.
10. The method according to any one of claims 7 to 9, characterized by comprising the steps of:
(1) mixing nano titanium dioxide, nano bismuth tungstate and water-based paint to prepare the antibacterial, antiviral and mildewproof paint;
wherein, according to the mass percentage, the nano titanium dioxide accounts for 0.5-2% of the water-based paint, and the nano bismuth tungstate accounts for 1.5-6% of the water-based paint;
the mixing temperature is 20-40 ℃, the mixing time is 30-50min, and the stirring speed is 30-50 r/min;
(2) coating the antibacterial, antiviral and mildewproof coating obtained in the step (1) on the wooden base material layer at 15-50 ℃ to prepare the antibacterial, antiviral and mildewproof wooden product;
wherein, the coating method is any one or the combination of at least two of spraying, rolling, dipping and brushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010161671.1A CN111231039B (en) | 2020-03-10 | 2020-03-10 | Antibacterial, antiviral and mildewproof wooden product and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010161671.1A CN111231039B (en) | 2020-03-10 | 2020-03-10 | Antibacterial, antiviral and mildewproof wooden product and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111231039A true CN111231039A (en) | 2020-06-05 |
| CN111231039B CN111231039B (en) | 2022-10-18 |
Family
ID=70863282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010161671.1A Active CN111231039B (en) | 2020-03-10 | 2020-03-10 | Antibacterial, antiviral and mildewproof wooden product and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111231039B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111500140A (en) * | 2020-06-19 | 2020-08-07 | 广东润立新材科技有限公司 | Novel antibacterial and antiviral multifunctional coating and preparation method thereof |
| CN111700080A (en) * | 2020-06-22 | 2020-09-25 | 同曦集团有限公司 | Antibacterial antiviral agent, antibacterial mildew-proof antiviral leather, and preparation method and application thereof |
| CN111892382A (en) * | 2020-08-10 | 2020-11-06 | 南京同曦同康抗菌材料科技有限公司 | Antibacterial and antiviral ceramic tile and preparation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792581A (en) * | 2005-11-14 | 2006-06-28 | 深圳清华大学研究院 | Method for mfg. sterilizing nano plates |
| CN101496994A (en) * | 2009-01-09 | 2009-08-05 | 东华大学 | Method for preparing molecular self-assembly porous vermiculite air purification material |
| CN106003326A (en) * | 2016-05-17 | 2016-10-12 | 三江县善茶轩工艺品有限公司 | Bamboo antiseptic treatment method |
| CN107825535A (en) * | 2017-10-30 | 2018-03-23 | 成都市美康三杉木业有限公司 | A kind of eucalyptus perfume (or spice) aldehyde-free by wood manufacturing process |
| CN107877643A (en) * | 2017-10-30 | 2018-04-06 | 成都市美康三杉木业有限公司 | A kind of vegetation oil anion timber floor manufacturing process |
| CN108102398A (en) * | 2017-12-11 | 2018-06-01 | 山西省交通科学研究院 | A kind of modified pitch of biology base photocatalytic degradation vehicle exhaust and preparation method thereof |
| CN108373645A (en) * | 2016-11-16 | 2018-08-07 | 中国林业科学研究院林业新技术研究所 | A method of inhibiting woodwork brightness reversion |
| CN110552214A (en) * | 2019-09-19 | 2019-12-10 | 同曦集团有限公司 | Preparation method of long-acting antibacterial fabric, product and application thereof |
| CN110666915A (en) * | 2019-09-25 | 2020-01-10 | 浙江云峰莫干山地板有限公司 | Solid wood composite floor surface plate and manufacturing method thereof |
-
2020
- 2020-03-10 CN CN202010161671.1A patent/CN111231039B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792581A (en) * | 2005-11-14 | 2006-06-28 | 深圳清华大学研究院 | Method for mfg. sterilizing nano plates |
| CN101496994A (en) * | 2009-01-09 | 2009-08-05 | 东华大学 | Method for preparing molecular self-assembly porous vermiculite air purification material |
| CN106003326A (en) * | 2016-05-17 | 2016-10-12 | 三江县善茶轩工艺品有限公司 | Bamboo antiseptic treatment method |
| CN108373645A (en) * | 2016-11-16 | 2018-08-07 | 中国林业科学研究院林业新技术研究所 | A method of inhibiting woodwork brightness reversion |
| CN107825535A (en) * | 2017-10-30 | 2018-03-23 | 成都市美康三杉木业有限公司 | A kind of eucalyptus perfume (or spice) aldehyde-free by wood manufacturing process |
| CN107877643A (en) * | 2017-10-30 | 2018-04-06 | 成都市美康三杉木业有限公司 | A kind of vegetation oil anion timber floor manufacturing process |
| CN108102398A (en) * | 2017-12-11 | 2018-06-01 | 山西省交通科学研究院 | A kind of modified pitch of biology base photocatalytic degradation vehicle exhaust and preparation method thereof |
| CN110552214A (en) * | 2019-09-19 | 2019-12-10 | 同曦集团有限公司 | Preparation method of long-acting antibacterial fabric, product and application thereof |
| CN110666915A (en) * | 2019-09-25 | 2020-01-10 | 浙江云峰莫干山地板有限公司 | Solid wood composite floor surface plate and manufacturing method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111500140A (en) * | 2020-06-19 | 2020-08-07 | 广东润立新材科技有限公司 | Novel antibacterial and antiviral multifunctional coating and preparation method thereof |
| CN111700080A (en) * | 2020-06-22 | 2020-09-25 | 同曦集团有限公司 | Antibacterial antiviral agent, antibacterial mildew-proof antiviral leather, and preparation method and application thereof |
| CN111892382A (en) * | 2020-08-10 | 2020-11-06 | 南京同曦同康抗菌材料科技有限公司 | Antibacterial and antiviral ceramic tile and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111231039B (en) | 2022-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111231039B (en) | Antibacterial, antiviral and mildewproof wooden product and preparation method thereof | |
| CN103467053B (en) | Novel multifunctional diatom ooze decorative wall material and preparation method thereof | |
| JP5812488B2 (en) | Antibacterial antiviral composition and method for producing the same | |
| JP6040021B2 (en) | Antibacterial antiviral composition and method for producing the same | |
| EP2908646B1 (en) | A surface coating | |
| CN102511503A (en) | Efficient and environmentally-friendly antibacterial and mildewproof inorganic composite nano-powder slurry and its preparation method | |
| WO2018110173A1 (en) | Photocatalytic material and photocatalytic coating composition | |
| CN106433443A (en) | Aldehyde removing, antibacterial and negative ion integrated ultraviolet light curable coating material and preparation process thereof | |
| CN106554645A (en) | A kind of dry-type ecological interior wall coating based on conch meal | |
| CN106189613A (en) | A kind of indoor air purification environmental protection coating material for timber buildings and preparation method thereof | |
| CN102017997A (en) | High-efficiency monatomic silver nanowire antibiotic material | |
| CN103482957A (en) | Antibacterial sanitary ceramic and preparation method thereof | |
| CN110628246A (en) | Composite photocatalyst wall coating | |
| CN108926994A (en) | Visible light removes the multifunctional air cleaning agent and its preparation method of formaldehyde and antibacterial | |
| CN103783081A (en) | Preparation method of silver-copper oxide co-doped mesoporous zirconium dioxide antibacterial agent | |
| JP2012096133A (en) | Deodorizing rutile type titanium oxide fine particle, coating liquid for forming deodorizing coating film containing the fine particle, and substrate with deodorizing coating film | |
| CN112279517B (en) | Antibacterial and antiviral glaze, antibacterial and antiviral ceramic and preparation method thereof | |
| CN108786447A (en) | A kind of environment-friendly type air cleanser and preparation method thereof based on catalysis material | |
| CN114318948B (en) | Antibacterial impregnated paper and preparation method and application thereof | |
| CN108395796A (en) | Nano modified acrylic ester antibacterial removes formaldehyde interior wall coating | |
| CN106517898B (en) | A kind of Ag-carried nanometer titanium dioxide fungus and mildew resistance diatom ooze and preparation method thereof | |
| KR100585189B1 (en) | Water-based Ceramic Photocatalyst Paint And Manufacturing Method Thereof | |
| KR100941738B1 (en) | Photoactive composition comprising scoria and preparation method thereof | |
| CN103262859B (en) | Preparation method of persimmon tannin-modified nanometer silver composite antibacterial powder | |
| CN104046156A (en) | Nano multicolor interior wall environment-friendly paint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |