CN114621679A - Antibacterial and mildewproof negative ion wall coating dry powder and preparation method thereof - Google Patents
Antibacterial and mildewproof negative ion wall coating dry powder and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D197/00—Coating compositions based on lignin-containing materials
- C09D197/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- 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
- C09D189/00—Coating compositions based on proteins; Coating compositions based on derivatives thereof
-
- 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
- C09D201/00—Coating compositions based on unspecified macromolecular compounds
-
- 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
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2286—Oxides; Hydroxides of metals of silver
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
Abstract
The invention discloses antibacterial and mildewproof negative ion wall coating dry powder and a preparation method thereof, wherein the wall coating dry powder comprises 300 parts of fiber powder 100-. The wall coating dry powder is rich in negative ions, can continuously release the negative ions and far infrared rays, effectively purifies air, eliminates peculiar smell, eliminates toxic and harmful gas and dust suspended in the air, loads the carbon nano tubes on the surface of the diatomite, improves the dispersibility of the carbon nano tubes, improves the adsorption effect, effectively adsorbs volatile substances in the air, and loads the nano zinc oxide and the nano silver simultaneously so that the nano zinc oxide and the nano silver exist in the wall coating, thereby not only fully playing the synergistic action of the nano photocatalyst and the nano silver, but also ensuring that the photocatalytic effect has long-term effect and ensuring that the wall coating has stronger antibacterial and mildewproof effects for a long time.
Description
Technical Field
The invention relates to the technical field of building coatings, in particular to antibacterial and mildewproof negative ion wall coating dry powder and a preparation method thereof.
Background
The wall covering is a third kind of novel interior wall decoration material which appears after interior wall decoration materials such as paint, wallpaper and the like, is prepared by taking natural fibers and artificial synthetic fibers as main raw materials and processing the raw materials through a special scientific process, and has attractive appearance and no harmful volatile substances.
The biggest characteristics of the existing wall clothes in the market at present are beautifully, heat preservation and sound insulation, and along with the continuous promotion of people health consciousness, people have higher and higher requirements on decorative materials of the wall surface, not only require beautifully but also require the wall clothes to have multiple functions, especially current anion wall clothes, the anion that adds has the function of releasing negative oxygen ion, improving living environment, receives people's favor. However, the wall coverings on the market at present are mainly formed by mixing wood fibers and natural fibers, do not have the mildew-proof function, are easy to mildew when the humidity of air is high, cause partial shedding, and influence the appearance, and in order to prevent the mildew of the wall covering material, common manufacturers can add mildew-proof agents such as phenols or organic metal salts and the like to be mixed with the wall covering material, but the mildew-proof agents are only physically adsorbed on the surface of the wall covering material and can be naturally degraded along with the time, so that the wall covering loses the mildew-proof function.
Disclosure of Invention
The invention aims to provide an antibacterial and mildewproof negative ion wall coating dry powder and a preparation method thereof, and aims to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: an antibacterial and mildewproof negative ion wall coating dry powder comprises the following raw materials in parts by weight: 300 parts of fiber powder, 200 parts of anion material powder, 80-120 parts of water-soluble plant rubber powder, 2-10 parts of softener, 2-10 parts of finishing agent, 2-6 parts of carbon nano tube, 8-20 parts of diatomite, 1-3 parts of nano silver particles and 1-3 parts of nano zinc oxide.
Further, the negative ion material powder is prepared from the following raw materials in parts by weight: 5-15 parts of stone needle, 1-15 parts of medical stone, 10-35 parts of germanite, 10-25 parts of tourmaline, 10-40 parts of natural crystalline salt ore, 10-20 parts of natural marine stone, 10-30 parts of opal, 10-25 parts of hsiuyen jade, 5-10 parts of rare earth and 5-10 parts of hexacyclic stone.
Further, the fibers comprise natural fibers and artificial synthetic fibers, and the natural fibers comprise natural animal fibers and natural plant fibers.
Further, the natural animal fiber comprises one or more fibers made of animal hair and secretion; the natural plant fiber comprises fiber prepared from one or more of plant root, stem, leaf, seed, bark and berry.
Further, the artificial synthetic fiber comprises one or more of terylene, spandex, acrylic fiber, nylon, aramid fiber, vinylon and polypropylene fiber.
A preparation method of antibacterial and mildewproof negative ion wall coating dry powder comprises the following steps:
s1: respectively carrying out superfine grinding treatment on the fiber powder and the negative ion material powder;
s2: placing carbon nanotubes in pure water, dispersing the carbon nanotubes by adopting ultrasonic waves to obtain a carbon nanotube suspension, adding diatomite into the carbon nanotube suspension for mixing, heating and refluxing for reaction for 12-24h, centrifuging and drying to obtain carbon nanotube-loaded diatomite powder, adding nano silver particles into the carbon nanotube-loaded diatomite powder for full stirring reaction, then adding nano zinc oxide for full stirring reaction, carrying out solid-liquid separation on the obtained solution, and drying to obtain composite powder;
s3: adding deionized water into the fiber powder and the anion powder in the step S1, the composite powder in the step S2, the water-soluble plant glue powder, the softener and the finishing agent according to a proportion, mixing and stirring for 15-20min, and heating and drying to obtain dry powder of the wall coating;
s4: and (5) crushing the dry powder of the wall covering in the step (S3) to 60-80 meshes by using a crusher to obtain a finished product.
Further, the preparation method of the negative ion material powder comprises the following steps:
s101: mixing and crushing 5-15 parts by weight of stone needle, 1-15 parts by weight of medical stone, 10-35 parts by weight of germanite, 10-25 parts by weight of tourmaline, 10-40 parts by weight of natural crystalline salt ore, 10-20 parts by weight of natural marine stone, 10-30 parts by weight of opal, 10-25 parts by weight of hsiuyen jade stone, 5-10 parts by weight of rare earth and 5-10 parts by weight of hexacyclic stone into a mixed raw material of 100 plus 200 um;
s102: calcining the mixed raw material in the step S01 at the temperature of 500-700 ℃ for 2-5h, then cooling to room temperature, and crushing into particles with the particle size of 30-60 um;
s103: adding a proper amount of deionized water, stirring to prepare a suspension of 40-60%, then adjusting the pH of the suspension to 9 by using a NaOH solution with the concentration of 10%, performing microwave treatment for 2 hours, performing magnetic oscillation for 1 hour, adjusting the pH of the suspension to 6 by using an HCl solution with the concentration of 10%, performing microwave treatment for 2 hours, performing ultrasonic oscillation for 2 hours, and finally neutralizing the pH of the suspension to 7 by using a baking soda solution with the concentration of 15%;
s104: centrifuging the suspension prepared in the step S103 at the rotating speed of 1500-;
s105: carrying out secondary calcination on the mineral raw material prepared in the step S04, wherein the calcination temperature is 600-900 ℃, the calcination time is 2-3 hours, and cooling to room temperature;
s106: ball-milling the mineral raw material in the step S105 at the rotating speed of 12000-20000r/min until the particle size is 400-500nm, thus obtaining the nanoscale negative ion material.
Further, in step S2, the rotation speed is 180-.
Further, in step S2, the centrifugation rotation speed is 1500-.
Further, in step S2, when the nano silver particles are added into the carbon nanotube-loaded diatomite powder, stirring and reacting at 45-55 ℃ for 25-35min, when the nano zinc oxide is added into the system of the nano silver particles and the carbon nanotube-loaded diatomite powder, heating to 85-100 ℃, and continuing stirring and reacting for 3-5 h.
Compared with the prior art, the invention has the beneficial effects that: the wall coating dry powder prepared by the invention is rich in negative ions, can continuously release negative ions and far infrared rays, effectively purifies air, eliminates peculiar smell, eliminates toxic and harmful gas and dust suspended in the air, inhibits bacteria and mould, adopts diatomite as a container, loads the carbon nano tube on the surface of the diatomite, improves the dispersity of the carbon nano tube, improves the adsorption effect, effectively adsorbs volatile substances in the air, simultaneously loads the nano zinc oxide and the nano silver, enables the nano zinc oxide and the nano silver to exist in the wall coating, not only fully exerts the synergistic effect of the nano photocatalyst and the nano silver, but also enables the photocatalytic effect of the nano zinc oxide and the nano silver to have long-term strong antibacterial and mould-proof effects, and greatly improves the practical value of the wall coating material.
Drawings
Fig. 1 is a flow chart of a preparation method of the antibacterial and mildewproof negative ion wall coating dry powder.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Detailed description of the preferred embodiment 1
The embodiment provides an antibacterial and mildewproof negative ion wall coating dry powder which comprises the following raw materials in parts by weight: the artificial hair removal agent comprises 300 parts of fiber powder, 100 parts of anion material powder, 80 parts of water-soluble plant rubber powder, 2 parts of a softener, 2 parts of a finishing agent, 2 parts of carbon nano tubes, 8 parts of diatomite, 1 part of nano silver particles and 1 part of nano zinc oxide, wherein the fibers comprise natural fibers and artificial synthetic fibers, the natural fibers comprise natural animal fibers and natural plant fibers, the natural animal fibers comprise fibers made of animal hair and secretions, the natural plant fibers comprise fibers made of roots, stems, leaves, seeds, skins, berries and the like of plants, and the artificial synthetic fibers comprise terylene, spandex, acrylon, nylon, aramid, vinylon, polypropylene and the like; the negative ion material powder is prepared from the following raw materials in parts by weight: 15 parts of stone needle, 1 part of medical stone, 10 parts of germanite, 10 parts of tourmaline, 10 parts of natural crystalline salt ore, 10 parts of natural marine stone, 10 parts of opal, 10 parts of hsiuyen rock jade, 10 parts of rare earth and 10 parts of hexacyclic stone.
The embodiment also provides a preparation method of the antibacterial and mildewproof negative ion wall coating dry powder, which comprises the following steps of:
s1: respectively carrying out superfine grinding treatment on the fiber powder and the negative ion material powder;
s2: placing carbon nanotubes in pure water, dispersing the carbon nanotubes by adopting ultrasonic waves to obtain a carbon nanotube suspension, adding diatomite into the carbon nanotube suspension for mixing, heating and refluxing for reaction for 12-24h, centrifuging and drying to obtain carbon nanotube-loaded diatomite powder, adding nano silver particles into the carbon nanotube-loaded diatomite powder for full stirring reaction, adding nano zinc oxide for full stirring reaction, performing solid-liquid separation on the obtained solution, and drying to obtain composite powder;
s3: adding the fiber powder and the anion powder in the step S1, the composite powder in the step S2, the water-soluble plant glue powder, the softener and the finishing agent into deionized water, mixing and stirring for 15-20min, and heating and drying to obtain dry wall clothing powder;
s4: and (5) crushing the dry powder of the wall covering in the step (S3) to 60-80 meshes by using a crusher to obtain a finished product.
Specifically, firstly, preparing negative ion material powder, mixing 15 parts of stone needle, 1 part of medical stone, 10 parts of germanite, 10 parts of tourmaline, 10 parts of natural crystalline salt ore, 10 parts of natural marine stone, 10 parts of opal, 10 parts of hsiuyen rock jade, 10 parts of rare earth and 5 parts of hexacyclic stone in parts by weight, and crushing into 100um mixed raw materials; calcining the mixed raw materials at 500 ℃ for 5h, cooling to room temperature, and crushing into particles with the particle size of 30 um; adding a proper amount of deionized water, stirring to prepare 40% suspension, then adjusting the pH of the suspension to 9 by using a 10% NaOH solution, carrying out microwave treatment for 2 hours, carrying out magnetic oscillation for 1 hour, adjusting the pH of the suspension to 6 by using a 10% HCl solution, carrying out microwave treatment for 2 hours, carrying out ultrasonic oscillation for 2 hours, and finally neutralizing the pH of the suspension to 7 by using a 15% sodium bicarbonate solution; centrifuging the prepared suspension for 30min at the rotating speed of 2000r/min, standing for 24h, filtering, and drying to remove water until the water content is less than 1% to obtain a mineral raw material; carrying out secondary calcination on the prepared mineral raw material, wherein the calcination temperature is 600 ℃, the calcination time is 3 hours, and cooling to room temperature; ball-milling the mineral raw materials at the rotating speed of 20000r/min until the particle size is 500nm to obtain a nanoscale negative ion material; carrying out superfine grinding on the fibers to 100 meshes by a biological superfine grinder; pretreating diatomite with hydrochloric acid to remove impurities on the pore path and the surface of the diatomite so as to enable the surface of the diatomite to be positively charged, drying, putting 2 parts by weight of carbon nano tubes into 100 parts by weight of pure water, dispersing the carbon nano tubes by adopting 40kHZ and 50W/L ultrasonic waves to obtain carbon nano tube suspension, adding 8 parts by weight of diatomite into the carbon nano tube suspension for mixing, heating and refluxing for 12 hours under the conditions that the temperature is 100 ℃ and the rotating speed is 200r/min, centrifuging for 8 minutes at 1500r/min, drying for 24 hours in a vacuum drying oven at 60 ℃ to obtain carbon nano tube-loaded diatomite powder, adding 1 part by weight of nano silver particles into the carbon nano tube-loaded diatomite powder, fully stirring for reaction for 35 minutes at 45 ℃, adding 1 part by weight of nano zinc oxide, heating to 85 ℃, continuing to fully stir for 5 hours, carrying out solid-liquid separation on the obtained solution, and continuously drying at 85 ℃ for 3 hours to obtain composite powder; mixing and stirring 300 parts by weight of fiber powder, 100 parts by weight of negative ion material powder, the obtained composite powder, 80 parts by weight of water-soluble plant glue powder, 2 parts by weight of softener, 2 parts by weight of finishing agent and a proper amount of deionized water for 15min, heating and drying, and finally crushing to 80 meshes by using a crusher to obtain a finished product.
Specific example 2
The embodiment provides an antibacterial and mildewproof negative ion wall coating dry powder which comprises the following raw materials in parts by weight: 100 parts of fiber powder, 200 parts of anion material powder, 120 parts of water-soluble plant rubber powder, 10 parts of softener, 10 parts of finishing agent, 6 parts of carbon nano tube, 20 parts of diatomite, 3 parts of nano silver particles and 3 parts of nano zinc oxide, wherein the fibers comprise natural fibers and artificial synthetic fibers, the natural fibers comprise natural animal fibers and natural plant fibers, the natural animal fibers comprise fibers made of animal hair and secretion, the natural plant fibers comprise fibers made of plant roots, stems, leaves, seeds, skins, berries and the like, and the artificial synthetic fibers comprise terylene, spandex, acrylon, nylon, aramid, vinylon, polypropylene and the like; the negative ion material powder is prepared from the following raw materials in parts by weight: 5 parts of stone needle, 15 parts of medical stone, 35 parts of germanite, 25 parts of tourmaline, 40 parts of natural crystalline salt ore, 20 parts of natural marine stone, 30 parts of opal, 25 parts of hsiuyen rock jade, 5 parts of rare earth and 10 parts of hexacyclic stone.
The preparation method of the antibacterial and mildewproof negative ion wall coating dry powder provided by the embodiment specifically comprises the following steps:
firstly, preparing negative ion material powder, mixing 5 parts of stone needle, 15 parts of medical stone, 35 parts of germanite, 25 parts of tourmaline, 40 parts of natural crystalline salt ore, 20 parts of natural marine stone, 30 parts of opal, 25 parts of hsiuyen jade, 5 parts of rare earth and 10 parts of hexacyclic stone in parts by weight, and crushing into a mixed raw material of 200 um; calcining the mixed raw materials at 700 ℃ for 2h, cooling to room temperature, and crushing into particles with the particle size of 60 um; adding a proper amount of deionized water, stirring to prepare 60% suspension, adjusting the pH of the suspension to 9 by using a 10% NaOH solution, performing microwave treatment for 2 hours, performing magnetic oscillation for 1 hour, adjusting the pH of the suspension to 6 by using a 10% HCl solution, performing microwave treatment for 2 hours, performing ultrasonic oscillation for 2 hours, and finally neutralizing the pH of the suspension to 7 by using a 15% baking soda solution; centrifuging the prepared suspension for 30min at the rotating speed of 1500r/min, standing for 24h, filtering, and drying to remove water until the water content is less than 1% to obtain a mineral raw material; carrying out secondary calcination on the prepared mineral raw material, wherein the calcination temperature is 900 ℃, the calcination time is 2 hours, and cooling to room temperature; ball-milling the mineral raw materials at the rotating speed of 12000r/min until the particle size is 400nm to obtain a nanoscale negative ion material; micronizing the fiber to 80 meshes by a biological ultrafine pulverizer; pretreating diatomite with hydrochloric acid to remove impurities on the pore path and the surface of the diatomite so as to enable the surface of the diatomite to be positively charged, drying, putting 6 parts by weight of carbon nano tubes into 300 parts by weight of pure water, dispersing the carbon nano tubes by adopting 40kHZ and 50W/L ultrasonic waves to obtain carbon nano tube suspension, adding 20 parts by weight of diatomite into the carbon nano tube suspension for mixing, heating and refluxing for 24 hours under the conditions that the temperature is 120 ℃ and the rotating speed is 180r/min, centrifuging for 4 minutes at 3000r/min, drying for 20 hours in a vacuum drying oven at 90 ℃ to obtain carbon nano tube-loaded diatomite powder, adding 3 parts by weight of nano silver particles into the carbon nano tube-loaded diatomite powder, fully stirring for 25 minutes at 55 ℃, adding 3 parts by weight of nano zinc oxide, heating to 100 ℃, continuing to fully stir for 3 hours, carrying out solid-liquid separation on the obtained solution, and continuously drying at 85 ℃ for 3h to obtain composite powder; mixing and stirring 100 parts by weight of fiber powder, 200 parts by weight of negative ion material powder, the obtained composite powder, 120 parts by weight of water-soluble plant rubber powder, 10 parts by weight of softener, 10 parts by weight of finishing agent and a proper amount of deionized water for 20min, heating and drying, and finally crushing by a crusher to 60 meshes to obtain the finished product.
Specific example 3
The embodiment provides an antibacterial and mildewproof negative ion wall coating dry powder which comprises the following raw materials in parts by weight: 200 parts of fiber powder, 150 parts of anion material powder, 100 parts of water-soluble plant rubber powder, 5 parts of a softener, 6 parts of a finishing agent, 4 parts of carbon nano tubes, 15 parts of diatomite, 2 parts of nano silver particles and 2 parts of nano zinc oxide, wherein the fibers comprise natural fibers and artificial synthetic fibers, the natural fibers comprise natural animal fibers and natural plant fibers, the natural animal fibers comprise fibers made of animal hair and secretions, the natural plant fibers comprise fibers made of roots, stems, leaves, seeds, skins, berries and the like of plants, and the artificial synthetic fibers comprise terylene, spandex, acrylon, nylon, aramid, vinylon, polypropylene and the like; the negative ion material powder is prepared from the following raw materials in parts by weight: 10 parts of stone needle, 10 parts of medical stone, 20 parts of germanite, 15 parts of tourmaline, 25 parts of natural crystalline salt ore, 15 parts of natural marine stone, 20 parts of opal, 15 parts of hsiuyen rock jade, 8 parts of rare earth and 7 parts of hexacyclic stone.
The preparation method of the antibacterial and mildewproof negative ion wall coating dry powder provided by the embodiment specifically comprises the following steps:
firstly, preparing negative ion material powder, mixing 10 parts of stone needle, 10 parts of medical stone, 20 parts of germanite, 15 parts of tourmaline, 25 parts of natural crystal salt ore, 15 parts of natural marine stone, 20 parts of opal, 15 parts of hsiuyen rock jade, 8 parts of rare earth and 7 parts of hexacyclic stone in parts by weight, and crushing into a mixed raw material of 250 um; calcining the mixed raw materials at 800 ℃ for 3h, cooling to room temperature, and crushing into particles with the particle size of 50 um; adding a proper amount of deionized water, stirring to prepare 50% suspension, adjusting the pH of the suspension to 9 by using a 10% NaOH solution, performing microwave treatment for 2 hours, performing magnetic oscillation for 1 hour, adjusting the pH of the suspension to 6 by using a 10% HCl solution, performing microwave treatment for 2 hours, performing ultrasonic oscillation for 2 hours, and finally neutralizing the pH of the suspension to 7 by using a 15% baking soda solution; centrifuging the prepared suspension for 30min at the rotating speed of 1800r/min, standing for 24h, filtering, and drying to remove water until the water content is less than 1% to obtain a mineral raw material; carrying out secondary calcination on the prepared mineral raw material, wherein the calcination temperature is 800 ℃, the calcination time is 2.5 hours, and cooling to room temperature; ball-milling the raw mineral materials at the rotating speed of 15000r/min until the particle size is 450nm to obtain a nano-scale negative ion material; carrying out ultrafine grinding on the fibers to 70 meshes by using a biological ultrafine grinder; pretreating diatomite with hydrochloric acid to remove impurities on the pore path and the surface of the diatomite so as to enable the surface of the diatomite to be positively charged, drying, putting 4 parts by weight of carbon nano tubes into 200 parts by weight of pure water, dispersing the carbon nano tubes by adopting 40kHZ and 50W/L ultrasonic waves to obtain carbon nano tube suspension, adding 15 parts by weight of diatomite into the carbon nano tube suspension for mixing, heating and refluxing for 18 hours under the conditions of 110 ℃ and 190r/min of rotation speed, centrifuging for 6 minutes at 1800r/min, drying for 21 hours in a vacuum drying oven at 80 ℃ to obtain carbon nano tube-loaded diatomite powder, adding 2 parts by weight of nano silver particles into the carbon nano tube-loaded diatomite powder, fully stirring for reaction for 30 minutes at 50 ℃, adding 2 parts by weight of nano zinc oxide, heating to 80 ℃, continuing to fully stir for reaction for 4 hours, carrying out solid-liquid separation on the obtained solution, and continuously drying at 85 ℃ for 3 hours to obtain composite powder; 200 parts of fiber powder, 150 parts of negative ion material powder, the obtained composite powder, 100 parts of water-soluble plant glue powder, 5 parts of softener, 5 parts of finishing agent and a proper amount of deionized water are mixed and stirred for 18min, heated and dried, and finally crushed to 70 meshes by a crusher to obtain the finished product.
The antibacterial and mildewproof negative ion wall coating dry powder provided by the invention is used for manufacturing wall coatings, and experiments are carried out on the negative oxygen ion concentration, the bacteriostasis and the antibacterium of the wall coatings, wherein the experiment results are shown in the following table, wherein the negative ion concentration is the average value of data obtained by measuring 20 times at different times by adopting a professional negative ion tester KEC-900.
| Experimental project | Wall clothes product on the market | Example 1 | Example 2 | Example 3 |
| Concentration of negative ions/piece/cm3 | 6000 | 9000 | 11000 | 12000 |
| Antibacterial activity of | 75％ | 88％ | 93％ | 91％ |
Table 1: experimental data
In order to verify the mildew resistance of the wall coating prepared from the antibacterial and mildew-proof negative ion wall coating dry powder, in the experiment, the wall coating prepared in example 3 and the commercially available wall coating are inoculated with 1mL of bacterial liquid and then placed in a closed box, a certain amount of water is contained in the closed box, the wall coating is not in contact with the water, the wall coating is cultured at 28 +/-1 ℃ for 28 days, and the observation is carried out by adopting a microscope: the commercially available wall covering has a trace amount of bacteria, but the wall covering in the embodiment 3 has no bacteria, so that the wall covering has a strong antibacterial and mildewproof effect for a long time.
The wall coating dry powder prepared by the invention is rich in negative ions, can continuously release negative ions and far infrared rays, effectively purifies air, eliminates peculiar smell, eliminates toxic and harmful gas and dust suspended in the air, inhibits bacteria and mould, adopts diatomite as a container, loads the carbon nano tube on the surface of the diatomite, improves the dispersity of the carbon nano tube, improves the adsorption effect, effectively adsorbs volatile substances in the air, simultaneously loads the nano zinc oxide and the nano silver, enables the nano zinc oxide and the nano silver to exist in the wall coating, not only fully exerts the synergistic effect of the nano photocatalyst and the nano silver, but also enables the photocatalytic effect of the nano zinc oxide and the nano silver to have long-term strong antibacterial and mould-proof effects, and greatly improves the practical value of the wall coating material.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (10)
1. The antibacterial and mildewproof negative ion wall coating dry powder is characterized by comprising the following raw materials in parts by weight: 300 parts of fiber powder, 200 parts of anion material powder, 80-120 parts of water-soluble plant rubber powder, 2-10 parts of softener, 2-10 parts of finishing agent, 2-6 parts of carbon nano tube, 8-20 parts of diatomite, 1-3 parts of nano silver particles and 1-3 parts of nano zinc oxide.
2. The antibacterial and mildewproof negative ion wall coating dry powder as claimed in claim 1, wherein the negative ion material powder is prepared from the following raw materials in parts by weight: 5-15 parts of stone needle, 1-15 parts of medical stone, 10-35 parts of germanite, 10-25 parts of tourmaline, 10-40 parts of natural crystalline salt ore, 10-20 parts of natural marine stone, 10-30 parts of opal, 10-25 parts of hsiuyen rock jade, 5-10 parts of rare earth and 5-10 parts of hexacyclic stone.
3. The antibacterial and mildewproof negative ion wall coating dry powder as claimed in claim 1, which is characterized in that: the fiber comprises natural fiber and artificial synthetic fiber, and the natural fiber comprises natural animal fiber and natural plant fiber.
4. The antibacterial and mildewproof negative ion wall coating dry powder as claimed in claim 3, which is characterized in that: the natural animal fiber comprises one or more of animal hair and secretion; the natural plant fiber comprises fiber prepared from one or more of plant root, stem, leaf, seed, bark and berry.
5. The antibacterial and mildewproof negative ion wall coating dry powder as claimed in claim 3, which is characterized in that: the artificial synthetic fiber comprises one or more of terylene, spandex, acrylon, nylon, aramid fiber, vinylon and polypropylene fiber.
6. The preparation method of the antibacterial and mildewproof negative ion wall coating dry powder is characterized by comprising the following steps of:
s1: respectively carrying out superfine grinding treatment on the fiber powder and the negative ion material powder;
s2: placing carbon nanotubes in pure water, dispersing the carbon nanotubes by adopting ultrasonic waves to obtain a carbon nanotube suspension, adding diatomite into the carbon nanotube suspension for mixing, heating and refluxing for reaction for 12-24h, centrifuging and drying to obtain carbon nanotube-loaded diatomite powder, adding nano silver particles into the carbon nanotube-loaded diatomite powder for full stirring reaction, adding nano zinc oxide for full stirring reaction, performing solid-liquid separation on the obtained solution, and drying to obtain composite powder;
s3: adding the fiber powder and the anion powder in the step S1, the composite powder in the step S2, the water-soluble plant glue powder, the softener and the finishing agent into deionized water, mixing and stirring for 15-20min, and heating and drying to obtain dry wall clothing powder;
s4: and (5) crushing the dry powder of the wall covering in the step (S3) to 60-80 meshes by using a crusher to obtain a finished product.
7. The preparation method of the antibacterial and mildewproof negative ion wall coating dry powder as claimed in claim 6, which is characterized by comprising the following steps of: the preparation method of the negative ion material powder comprises the following steps:
s101: mixing and crushing 5-15 parts by weight of stone needle, 1-15 parts by weight of medical stone, 10-35 parts by weight of germanite, 10-25 parts by weight of tourmaline, 10-40 parts by weight of natural crystalline salt ore, 10-20 parts by weight of natural marine stone, 10-30 parts by weight of opal, 10-25 parts by weight of hsiuyen jade stone, 5-10 parts by weight of rare earth and 5-10 parts by weight of hexacyclic stone into a mixed raw material of 100 plus 200 um;
s102: calcining the mixed raw material in the step S01 at the temperature of 500-700 ℃ for 2-5h, then cooling to room temperature, and crushing into particles with the particle size of 30-60 um;
s103: adding a proper amount of deionized water, stirring to prepare a suspension of 40-60%, then adjusting the pH of the suspension to 9 by using a NaOH solution with the concentration of 10%, performing microwave treatment for 2 hours, performing magnetic oscillation for 1 hour, adjusting the pH of the suspension to 6 by using an HCl solution with the concentration of 10%, performing microwave treatment for 2 hours, performing ultrasonic oscillation for 2 hours, and finally neutralizing the pH of the suspension to 7 by using a baking soda solution with the concentration of 15%;
s104: centrifuging the suspension prepared in the step S103 at the rotating speed of 1500-;
s105: carrying out secondary calcination on the mineral raw material prepared in the step S04, wherein the calcination temperature is 600-900 ℃, the calcination time is 2-3 hours, and cooling to room temperature;
s106: ball-milling the mineral raw material in the step S105 at the rotating speed of 12000-20000r/min until the particle size is 400-500nm, thus obtaining the nanoscale negative ion material.
8. The preparation method of the antibacterial and mildewproof negative ion dry powder for the wall coverings according to claim 6, is characterized by comprising the following steps: in step S2, the rotation speed is 180-200r/min, and the heating temperature is 100-120 ℃.
9. The preparation method of the antibacterial and mildewproof negative ion wall coating dry powder as claimed in claim 6, which is characterized by comprising the following steps of: in step S2, the centrifugation speed is 1500-3000r/min, the centrifugation time is 4-8min, the drying temperature is 60-90 ℃, and the drying time is 20-24 h.
10. The preparation method of the antibacterial and mildewproof negative ion wall coating dry powder as claimed in claim 6, which is characterized by comprising the following steps of: in step S2, when adding the nano silver particles into the carbon nanotube-loaded diatomite powder, stirring and reacting at 45-55 ℃ for 25-35min, when adding the nano zinc oxide into the system of the nano silver particles and the carbon nanotube-loaded diatomite powder, heating to 85-100 ℃, and continuing stirring and reacting for 3-5 h.
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