CN115109513B - Water-based single-component antibacterial child white board paint and preparation method thereof - Google Patents
Water-based single-component antibacterial child white board paint and preparation method thereof Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 49
- 239000003973 paint Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims description 26
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 132
- 239000011787 zinc oxide Substances 0.000 claims abstract description 70
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 64
- 239000003607 modifier Substances 0.000 claims abstract description 56
- 239000000440 bentonite Substances 0.000 claims abstract description 55
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 55
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 55
- 230000002195 synergetic effect Effects 0.000 claims abstract description 44
- 239000003381 stabilizer Substances 0.000 claims abstract description 43
- 239000002131 composite material Substances 0.000 claims abstract description 42
- 239000007822 coupling agent Substances 0.000 claims abstract description 38
- 239000011347 resin Substances 0.000 claims abstract description 38
- 229920005989 resin Polymers 0.000 claims abstract description 38
- 239000002270 dispersing agent Substances 0.000 claims abstract description 24
- 238000009736 wetting Methods 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 18
- -1 polymethylsiloxane Polymers 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 92
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 43
- 229910021389 graphene Inorganic materials 0.000 claims description 41
- 239000000243 solution Substances 0.000 claims description 36
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 30
- 238000001035 drying Methods 0.000 claims description 29
- 238000005406 washing Methods 0.000 claims description 29
- 238000002156 mixing Methods 0.000 claims description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 23
- 230000004048 modification Effects 0.000 claims description 23
- 238000012986 modification Methods 0.000 claims description 23
- 238000000498 ball milling Methods 0.000 claims description 21
- VQEHIYWBGOJJDM-UHFFFAOYSA-H lanthanum(3+);trisulfate Chemical compound [La+3].[La+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O VQEHIYWBGOJJDM-UHFFFAOYSA-H 0.000 claims description 16
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 14
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 14
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 239000005543 nano-size silicon particle Substances 0.000 claims description 11
- 235000012239 silicon dioxide Nutrition 0.000 claims description 11
- 229920001661 Chitosan Polymers 0.000 claims description 9
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 9
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 9
- 239000004359 castor oil Substances 0.000 claims description 9
- 235000019438 castor oil Nutrition 0.000 claims description 9
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 9
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 9
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 9
- UHUUYVZLXJHWDV-UHFFFAOYSA-N trimethyl(methylsilyloxy)silane Chemical compound C[SiH2]O[Si](C)(C)C UHUUYVZLXJHWDV-UHFFFAOYSA-N 0.000 claims description 9
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 8
- ABMFBCRYHDZLRD-UHFFFAOYSA-N naphthalene-1,4-dicarboxylic acid Chemical compound C1=CC=C2C(C(=O)O)=CC=C(C(O)=O)C2=C1 ABMFBCRYHDZLRD-UHFFFAOYSA-N 0.000 claims description 8
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 8
- 239000000661 sodium alginate Substances 0.000 claims description 8
- 235000010413 sodium alginate Nutrition 0.000 claims description 8
- 229940005550 sodium alginate Drugs 0.000 claims description 8
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 7
- 239000007853 buffer solution Substances 0.000 claims description 7
- 239000002202 Polyethylene glycol Substances 0.000 claims description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 238000009210 therapy by ultrasound Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000012752 auxiliary agent Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 11
- 239000006185 dispersion Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000001914 filtration Methods 0.000 description 3
- 239000002041 carbon nanotube Substances 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000003981 vehicle Substances 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000003385 bacteriostatic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005661 hydrophobic surface Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- 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
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Plant Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a water-based single-component antibacterial children whiteboard paint which comprises the following raw materials in parts by weight: 55-75 parts of water-based resin, 10-15 parts of modified nano zinc oxide synergistic bentonite composite modifier, 5-10 parts of hydrophobic modified nano stabilizer, 3-8 parts of wetting dispersant, 2-6 parts of film-forming assistant, 1-4 parts of interface modified coupling agent and 80-100 parts of water. The children white board paint is a paint formed by taking water-based resin as a base material, selecting omega-dihydroxy polymethylsiloxane resin, and matching with a modified nano zinc oxide synergistic bentonite composite modifier, a hydrophobic modified nano stabilizer and other auxiliary agents, such as a wetting dispersant, a film-forming assistant, an interface modified coupling agent and the like, and has excellent waterproof and antibacterial stability.
Description
Technical Field
The invention relates to the technical field of child white board paints, in particular to a water-based single-component antibacterial child white board paint and a preparation method thereof.
Background
Paint is a chemical mixture coating that can be firmly covered on the surface of an object for protection, decoration, marking and other special purposes. The 'coating process' book which is relatively authoritative in the Chinese coating world is defined in the following way, and the coating is a material which can be coated on the surface of an object by different construction processes to form a continuous solid film which is firm in adhesion, has certain strength. The film thus formed is generally called a coating film, also called a paint film or a coating. White board paints generally use oily products, which do not meet the requirements on environmental protection, particularly on children's paint layers and on odor and VOC, and therefore aqueous paint products need to be adopted.
The existing water-based paint is used on a child whiteboard, in order to improve smell and VOC, an inorganic environment-friendly material is used for replacing an organic raw material, so that the product is poor in waterproof performance and easy to breed germs on the surface of the product in a humid environment.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a water-based single-component antibacterial children whiteboard paint and a preparation method thereof, so as to solve the problems in the background art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention provides a water-based single-component antibacterial children white board paint which comprises the following raw materials in parts by weight:
55-75 parts of water-based resin, 10-15 parts of modified nano zinc oxide synergistic bentonite composite modifier, 5-10 parts of hydrophobic modified nano stabilizer, 3-8 parts of wetting dispersant, 2-6 parts of film forming additive, 1-4 parts of interface modified coupling agent and 80-100 parts of water.
Preferably, the children whiteboard paint comprises the following raw materials in parts by weight:
60 parts of water-based resin, 12.5 parts of modified nano zinc oxide synergistic bentonite composite modifier, 7.5 parts of hydrophobic modified nano stabilizer, 5.5 parts of wetting dispersant, 4 parts of film-forming assistant, 2.5 parts of interface modified coupling agent and 90 parts of water.
Preferably, the aqueous resin is a silicone hydrophobic resin, and is an α, ω -dihydroxypolymethylsiloxane resin having a viscosity of 2500 to 3000mpa.s.
Preferably, the preparation method of the modified nano zinc oxide synergistic bentonite composite modifier comprises the following steps:
s01: adding 10-15 parts of nano zinc oxide into 30-40 parts of water, then adding 2-5 parts of lanthanum sulfate solution and 3-6 parts of sodium carboxymethylcellulose, stirring at the rotating speed of 300-500r/min for 20-30min, then adding 5-9 parts of dispersed graphene and 1-3 parts of hydrochloric acid, continuing stirring for 10-20min, and after stirring, washing with water, filtering and drying to obtain modified nano zinc oxide;
s02: adding 10-20 parts of sodium alginate into 40-50 parts of water, then adding 1-5 parts of 1,4-naphthalenedicarboxylic acid, stirring and mixing fully, finally adding a phosphoric acid buffer solution, and adjusting the pH value to 5.5 to obtain a modified solution;
s03: adding 5-10 parts of bentonite into 35-45 parts of the modification solution, then adding 8-12 parts of modified nano zinc oxide, stirring at 60-70 ℃ for 35-45min at the stirring speed of 500-1000r/min, finishing stirring, washing with water, filtering and drying to obtain the modified nano zinc oxide synergistic bentonite composite modifier.
Preferably, the mass fraction of the lanthanum sulfate solution is 5-10%.
Preferably, the dispersion type graphene is prepared by feeding graphene into a ball mill for ball milling for 20-30min, wherein the ball milling rotation speed is 1000-1500r/min, after the ball milling is finished, placing the graphene in a hydrochloric acid solution with the mass fraction of 5-7% for ultrasonic dispersion for 20-30min, wherein the ultrasonic power is 150-200W, and after the ultrasonic dispersion is finished, washing and drying.
Preferably, the preparation method of the hydrophobically modified nano stabilizer comprises the following steps:
ultrasonically dispersing 5-10 parts of nano silicon dioxide in 40-50 parts of acetone for 10-20min, wherein the ultrasonic power is 300-350W, and after the ultrasonic treatment is finished, washing, filtering and drying for later use; adding 3-6 parts of tetramethyldisiloxane into 10-15 parts of ethanol, then adding 2-4 parts of chitosan and 1-3 parts of castor oil, and stirring and fully mixing to obtain a hydrophobic modifier; mixing the product to be used and a hydrophobic modifier according to a weight ratio of 1: (5-9), stirring at 60-65 ℃ for full reaction, finishing stirring, washing with water, and drying to obtain the hydrophobic modified nano stabilizer.
Preferably, the wetting and dispersing agent is one of dyhi 760W and 762W; the film-forming assistant is polyethylene glycol.
The invention also provides a preparation method of the water-based single-component antibacterial children whiteboard paint, which comprises the following steps:
the method comprises the following steps: adding the modified nano zinc oxide synergistic bentonite composite modifier and the hydrophobic modified nano stabilizer into a stirrer to obtain a material to be used;
step two: then adding an interface modification coupling agent, stirring and mixing for 10-20min at the rotating speed of 550-750r/min to obtain a mixed material A;
step three: then sequentially adding the water-based resin and the water, and continuously stirring for 5-10min;
step four: and adding a wetting dispersant and a film-forming assistant, stirring for 1-5min, and finishing stirring to obtain the water-based single-component antibacterial children whiteboard paint.
Preferably, the interface modification coupling agent comprises the following raw materials in parts by weight: 5-10 parts of coupling agent KH560 and 2-5 parts of rare earth lanthanum chloride.
Compared with the prior art, the invention has the following beneficial effects:
the children white board paint takes water-based resin as a base material, selects omega-dihydroxy polymethylsiloxane resin, and is matched with a nano zinc oxide synergistic bentonite composite modifier subjected to modification treatment, a hydrophobic modified nano stabilizer and other auxiliary agents, such as a wetting dispersant, a film forming aid, an interface modified coupling agent and the like to form a paint vehicle, so that the paint vehicle has excellent waterproof and antibacterial stability;
the modified nano zinc oxide synergistic bentonite composite modifier is modified by dispersing nano zinc oxide in lanthanum sulfate solution, sodium carboxymethylcellulose and water and adding dispersive graphene, the graphene has better sheet structure dispersity after being ground and dispersed, the dispersity of nano zinc oxide is improved by coordinating with the modified nano zinc oxide, the bentonite has a sheet structure and is dispersed in sodium alginate aqueous solution, the activity of the modified solution is improved by 1,4-naphthalene dicarboxylic acid, and further synergistic effect can be generated between the sheet-shaped bentonite and the modified nano zinc oxide, because the sheet-shaped graphene can be inserted into the sheet-shaped bentonite, the stability of the whole raw material is improved, and the antibacterial durability of the product can be obviously improved;
the hydrophobic modified nano stabilizer is prepared by dispersing nano silicon dioxide in acetone, so that modification in a hydrophobic modifier of tetramethyldisiloxane, chitosan and castor oil is facilitated, the tetramethyldisiloxane and the castor oil are used for carrying out hydrophobic surface modification on the nano silicon dioxide, the chitosan can play a role of an auxiliary agent, and the interface contact effect among the nano silicon dioxide, the tetramethyldisiloxane and the castor oil is enhanced, so that the surface modification efficiency is improved, the modified nano silicon dioxide serving as the hydrophobic modified nano stabilizer can be efficiently dispersed in a product system, an efficient hydrophobic environment is provided, and the hydrophobic efficiency is remarkably improved;
after the hydrophobic modified nano stabilizer and the modified nano zinc oxide synergistic bentonite are subjected to composite modification by the interface modified coupling agent, the interface modified coupling agent is matched with the coupling agent KH560 and rare earth lanthanum chloride, the inorganic material and the organic material are subjected to efficient interface modification by the coupling agent KH560, and meanwhile, the lanthanum chloride rare earth material has amphoteric interface property, so that a bridging auxiliary effect is achieved, the raw materials of the optimized and improved product can be efficiently matched, the raw materials are complementary and mutually matched, and the prepared white board paint has excellent hydrophobic and antibacterial lasting effects.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The water-based single-component antibacterial children whiteboard paint comprises the following raw materials in parts by weight:
55-75 parts of water-based resin, 10-15 parts of modified nano zinc oxide synergistic bentonite composite modifier, 5-10 parts of hydrophobic modified nano stabilizer, 3-8 parts of wetting dispersant, 2-6 parts of film forming additive, 1-4 parts of interface modified coupling agent and 80-100 parts of water.
The children white board paint comprises the following raw materials in parts by weight:
60 parts of water-based resin, 12.5 parts of modified nano zinc oxide synergistic bentonite composite modifier, 7.5 parts of hydrophobic modified nano stabilizer, 5.5 parts of wetting dispersant, 4 parts of film-forming assistant, 2.5 parts of interface modified coupling agent and 90 parts of water.
The aqueous resin of this example was a silicone hydrophobic resin, and was an α, ω -dihydroxypolymethylsiloxane resin having a viscosity of 2500 to 3000mpa.s.
The preparation method of the modified nano zinc oxide synergistic bentonite composite modifier comprises the following steps:
s01: adding 10-15 parts of nano zinc oxide into 30-40 parts of water, then adding 2-5 parts of lanthanum sulfate solution and 3-6 parts of sodium carboxymethylcellulose, stirring at the rotating speed of 300-500r/min for 20-30min, then adding 5-9 parts of dispersed graphene and 1-3 parts of hydrochloric acid, continuing stirring for 10-20min, and after stirring, washing with water and drying to obtain modified nano zinc oxide;
s02: adding 10-20 parts of sodium alginate into 40-50 parts of water, then adding 1-5 parts of 1,4-naphthalene dicarboxylic acid, stirring and mixing fully, finally adding a phosphoric acid buffer solution, and adjusting the pH value to 5.5 to obtain a modified solution;
s03: adding 5-10 parts of bentonite into 35-45 parts of the modification liquid, then adding 8-12 parts of modified nano zinc oxide, stirring at 60-70 ℃ for 35-45min at the stirring speed of 500-1000r/min, finishing stirring, washing with water, and drying to obtain the modified nano zinc oxide synergistic bentonite composite modifier.
The mass fraction of the lanthanum sulfate solution of this example is 5-10%.
The dispersion type graphene is prepared by the steps of feeding graphene into a ball mill for ball milling for 20-30min, wherein the ball milling rotating speed is 1000-1500r/min, placing the graphene in a hydrochloric acid solution with the mass fraction of 5-7% for ultrasonic dispersion for 20-30min after the ball milling is finished, the ultrasonic power is 150-200W, and performing ultrasonic dispersion, washing and drying.
The preparation method of the hydrophobically modified nano stabilizer in the embodiment comprises the following steps:
ultrasonically dispersing 5-10 parts of nano silicon dioxide in 40-50 parts of acetone for 10-20min, wherein the ultrasonic power is 300-350W, and finishing the ultrasonic treatment for later use; adding 3-6 parts of tetramethyldisiloxane into 10-15 parts of ethanol, then adding 2-4 parts of chitosan and 1-3 parts of castor oil, and stirring and fully mixing to obtain a hydrophobic modifier; mixing the product to be used and a hydrophobic modifier according to a weight ratio of 1: (5-9), stirring at 60-65 ℃ for full reaction, washing with water, and drying to obtain the hydrophobic modified nano stabilizer.
The wetting dispersant of the embodiment is one of digao 760W and 762W; the film-forming assistant is polyethylene glycol.
The preparation method of the water-based single-component antibacterial children whiteboard paint provided by the embodiment comprises the following steps:
the method comprises the following steps: adding the modified nano zinc oxide synergistic bentonite composite modifier and the hydrophobic modified nano stabilizer into a stirrer to obtain a material to be used;
step two: then adding an interface modification coupling agent, stirring and mixing for 10-20min at the rotating speed of 550-750r/min to obtain a mixed material A;
step three: then sequentially adding the water-based resin and the water, and continuously stirring for 5-10min;
step four: and adding a wetting dispersant and a film-forming assistant, stirring for 1-5min, and finishing stirring to obtain the water-based single-component antibacterial children whiteboard paint.
The interface modified coupling agent of the embodiment comprises the following raw materials in parts by weight: 5-10 parts of a coupling agent KH560 and 2-5 parts of rare earth lanthanum chloride.
Example 1.
The water-based single-component antibacterial children whiteboard paint comprises the following raw materials in parts by weight:
55 parts of water-based resin, 10 parts of modified nano zinc oxide synergistic bentonite composite modifier, 5 parts of hydrophobic modified nano stabilizer, 3 parts of wetting dispersant, 2 parts of film-forming assistant, 1 part of interface modified coupling agent and 80 parts of water.
The aqueous resin of this example was a silicone hydrophobic resin and was an α, ω -dihydroxypolymethylsiloxane resin having a viscosity of 2500mpa.s.
The preparation method of the modified nano zinc oxide synergistic bentonite composite modifier comprises the following steps:
s01: adding 10 parts of nano zinc oxide into 30 parts of water, then adding 2 parts of lanthanum sulfate solution and 3 parts of sodium carboxymethylcellulose, stirring at the rotating speed of 300r/min for 20min, then adding 5 parts of dispersion type graphene and 1 part of hydrochloric acid, continuously stirring for 10min, and after stirring, washing and drying to obtain modified nano zinc oxide;
s02: adding 10 parts of sodium alginate into 40 parts of water, then adding 1 part of 1,4-naphthalene dicarboxylic acid, stirring and mixing fully, finally adding a phosphoric acid buffer solution, and adjusting the pH value to 5.5 to obtain a modified solution;
s03: and adding 5 parts of bentonite into 35 parts of the modification solution, then adding 8 parts of modified nano-zinc oxide, stirring at 60 ℃ for 35min at the stirring speed of 500r/min, finishing stirring, washing with water, and drying to obtain the modified nano-zinc oxide synergistic bentonite composite modifier.
The mass fraction of the lanthanum sulfate solution of this example was 5%.
The dispersion type graphene is prepared by feeding graphene into a ball mill for ball milling for 20min, wherein the ball milling rotation speed is 1000r/min, finishing ball milling, placing the graphene in a hydrochloric acid solution with the mass fraction of 5% for ultrasonic dispersion for 20min, wherein the ultrasonic power is 150W, finishing ultrasonic dispersion, washing with water, and drying.
The preparation method of the hydrophobically modified nano stabilizer in the embodiment comprises the following steps:
ultrasonically dispersing 5 parts of nano silicon dioxide in 40 parts of acetone for 10min, wherein the ultrasonic power is 300W, and finishing the ultrasonic treatment for later use; adding 3 parts of tetramethyldisiloxane into 10 parts of ethanol, then adding 2 parts of chitosan and 1 part of castor oil, and stirring and mixing fully to obtain a hydrophobic modifier; mixing the product to be used and a hydrophobic modifier according to a weight ratio of 1:5, stirring at 60 ℃ to react fully, washing with water, and drying to obtain the hydrophobic modified nano stabilizer.
The wetting dispersant of this example is digao 760W; the film-forming assistant is polyethylene glycol.
The preparation method of the water-based single-component antibacterial children whiteboard paint provided by the embodiment comprises the following steps:
the method comprises the following steps: adding the modified nano zinc oxide synergistic bentonite composite modifier and the hydrophobic modified nano stabilizer into a stirrer to obtain a material to be used;
step two: then adding an interface modification coupling agent, and stirring and mixing for 10min at the rotating speed of 550r/min to obtain a mixed material A;
step three: then sequentially adding the water-based resin and the water, and continuously stirring for 5min;
step four: and adding a wetting dispersant and a film-forming assistant, stirring for 1min, and finishing stirring to obtain the water-based single-component antibacterial children whiteboard paint.
The interface modified coupling agent of the embodiment comprises the following raw materials in parts by weight: 5 parts of a coupling agent KH560 and 2 parts of rare earth lanthanum chloride.
Example 2.
The water-based single-component antibacterial children whiteboard paint comprises the following raw materials in parts by weight:
75 parts of water-based resin, 15 parts of modified nano zinc oxide synergistic bentonite composite modifier, 10 parts of hydrophobic modified nano stabilizer, 8 parts of wetting dispersant, 6 parts of film-forming assistant, 4 parts of interface modified coupling agent and 100 parts of water.
The aqueous resin of this example was a silicone hydrophobic resin, and was an α, ω -dihydroxypolymethylsiloxane resin having a viscosity of 3000mpa.s.
The preparation method of the modified nano zinc oxide synergistic bentonite composite modifier comprises the following steps:
s01: adding 15 parts of nano zinc oxide into 40 parts of water, then adding 5 parts of lanthanum sulfate solution and 6 parts of sodium carboxymethylcellulose, stirring at the rotating speed of 500r/min for 30min, then adding 9 parts of dispersion type graphene and 3 parts of hydrochloric acid, continuing stirring for 20min, and after stirring, washing and drying to obtain modified nano zinc oxide;
s02: adding 20 parts of sodium alginate into 50 parts of water, then adding 5 parts of 1,4-naphthalenedicarboxylic acid, stirring and mixing fully, finally adding a phosphoric acid buffer solution, and adjusting the pH value to 5.5 to obtain a modified solution;
s03: and adding 10 parts of bentonite into 45 parts of the modification solution, then adding 12 parts of modified nano-zinc oxide, stirring at 70 ℃ for 45min at the stirring speed of 1000r/min, finishing stirring, washing with water, and drying to obtain the modified nano-zinc oxide synergistic bentonite composite modifier.
The mass fraction of the lanthanum sulfate solution of this example was 10%.
The dispersion type graphene is prepared by feeding graphene into a ball mill for ball milling for 30min, wherein the ball milling rotation speed is 1500r/min, after the ball milling is finished, placing the graphene in a hydrochloric acid solution with the mass fraction of 7% for ultrasonic dispersion for 30min, wherein the ultrasonic power is 200W, and after the ultrasonic dispersion, washing and drying.
The preparation method of the hydrophobically modified nano stabilizer in the embodiment comprises the following steps:
ultrasonically dispersing 10 parts of nano silicon dioxide in 50 parts of acetone for 20min, wherein the ultrasonic power is 350W, and finishing the ultrasonic treatment for later use; adding 6 parts of tetramethyldisiloxane into 15 parts of ethanol, then adding 4 parts of chitosan and 3 parts of castor oil, and stirring and mixing fully to obtain a hydrophobic modifier; mixing the product to be used and a hydrophobic modifier according to a weight ratio of 1:9, stirring at 65 ℃ to react fully, washing with water, and drying to obtain the hydrophobic modified nano stabilizer.
The wetting and dispersing agent of the present embodiment is dyhi 762W; the film-forming assistant is polyethylene glycol.
The preparation method of the water-based single-component antibacterial children whiteboard paint provided by the embodiment comprises the following steps:
the method comprises the following steps: adding the modified nano zinc oxide synergistic bentonite composite modifier and the hydrophobic modified nano stabilizer into a stirrer to obtain a material to be used;
step two: then adding an interface modification coupling agent, and stirring and mixing at the rotating speed of 750r/min for 20min to obtain a mixed material A;
step three: then sequentially adding the water-based resin and the water, and continuously stirring for 10min;
step four: and adding a wetting dispersant and a film-forming assistant, stirring for 5min, and finishing stirring to obtain the water-based single-component antibacterial children whiteboard paint.
The interface modified coupling agent of the embodiment comprises the following raw materials in parts by weight: 10 parts of a coupling agent KH560 and 5 parts of rare earth lanthanum chloride.
Example 3.
The water-based single-component antibacterial children whiteboard paint comprises the following raw materials in parts by weight:
60 parts of water-based resin, 12.5 parts of modified nano zinc oxide synergistic bentonite composite modifier, 7.5 parts of hydrophobic modified nano stabilizer, 5.5 parts of wetting dispersant, 4 parts of film-forming assistant, 2.5 parts of interface modified coupling agent and 90 parts of water.
The aqueous resin of this example is a silicone hydrophobic resin and is an alpha, omega-dihydroxypolymethylsiloxane resin having a viscosity of 2750mpa.s.
The preparation method of the modified nano zinc oxide synergistic bentonite composite modifier comprises the following steps:
s01: adding 12.5 parts of nano zinc oxide into 35 parts of water, then adding 3.5 parts of lanthanum sulfate solution and 4.5 parts of sodium carboxymethylcellulose, stirring at the rotating speed of 400r/min for 25min, then adding 7 parts of dispersed graphene and 2 parts of hydrochloric acid, continuously stirring for 15min, and after stirring, washing and drying to obtain modified nano zinc oxide;
s02: adding 15 parts of sodium alginate into 45 parts of water, then adding 3 parts of 1,4-naphthalenedicarboxylic acid, stirring and mixing fully, finally adding a phosphoric acid buffer solution, and adjusting the pH value to 5.5 to obtain a modified solution;
s03: adding 7.5 parts of bentonite into 40 parts of the modification liquid, then adding 10 parts of modified nano-zinc oxide, stirring at 65 ℃ for 40min at the stirring speed of 750r/min, finishing stirring, washing with water, and drying to obtain the modified nano-zinc oxide synergistic bentonite composite modifier.
The mass fraction of the lanthanum sulfate solution of this example was 7.5%.
The dispersion type graphene is prepared by feeding graphene into a ball mill for ball milling for 25min, wherein the ball milling rotation speed is 1250r/min, after the ball milling is finished, placing the graphene in a hydrochloric acid solution with the mass fraction of 6% for ultrasonic dispersion for 25min, wherein the ultrasonic power is 175W, and after the ultrasonic dispersion, washing and drying.
The preparation method of the hydrophobically modified nano stabilizer of the embodiment comprises the following steps:
ultrasonically dispersing 7.5 parts of nano silicon dioxide in 45 parts of acetone for 15min, wherein the ultrasonic power is 325W, and finishing the ultrasonic treatment for later use; adding 4.5 parts of tetramethyldisiloxane into 12.5 parts of ethanol, then adding 3 parts of chitosan and 2 parts of castor oil, and stirring and mixing fully to obtain a hydrophobic modifier; mixing the product to be used and a hydrophobic modifier according to a weight ratio of 1:7, stirring at 62.5 ℃ to react fully, washing with water, and drying to obtain the hydrophobic modified nano stabilizer.
The wetting dispersant of this example is digao 760W; the film-forming assistant is polyethylene glycol.
The preparation method of the water-based single-component antibacterial children white board paint provided by the embodiment comprises the following steps:
the method comprises the following steps: adding the modified nano zinc oxide synergistic bentonite composite modifier and the hydrophobic modified nano stabilizer into a stirrer to obtain a material to be used;
step two: then adding an interface modification coupling agent, and stirring and mixing for 15min at the rotating speed of 600r/min to obtain a mixed material A;
step three: then sequentially adding the water-based resin and the water, and continuously stirring for 7.5min;
step four: and adding a wetting dispersant and a film-forming assistant, stirring for 3min, and finishing stirring to obtain the water-based single-component antibacterial children whiteboard paint.
The interface modified coupling agent of the embodiment comprises the following raw materials in parts by weight: 7.5 parts of a coupling agent KH560 and 3.5 parts of rare earth lanthanum chloride.
Comparative example 1.
The difference from the embodiment 3 is that the modified nano zinc oxide synergistic bentonite composite modifier is replaced by nano zinc oxide.
Comparative example 2.
Unlike example 3, no hydrophobically modified nano-stabilizer was added.
Comparative example 3.
The difference from example 3 is that the hydrophobically modified nano-stabiliser was prepared without treatment with a hydrophobic modifier.
Comparative example 4.
The difference from example 3 is that the hydrophobically modified nano-stabiliser is replaced by nano-silica.
Comparative example 5.
The difference from example 3 is that the hydrophobic modifier of the hydrophobically modified nano-stabiliser is not added to chitosan.
Comparative example 6.
Unlike example 3, no treatment with an interface modifying coupling agent was used.
Comparative example 7.
Measuring the contact angle of the coating to water by using a contact angle measuring instrument, and carrying out antibacterial performance test according to GB/T21866-2008 'antibacterial property measuring method and antibacterial effect of antibacterial coating (paint film)':
the results of the performance measurements of examples 1 to 3 and comparative examples 1 to 7 are as follows
From examples 1 to 3 and comparative examples 1 to 7,
the product of the embodiment 3 has excellent hydrophobic and antibacterial lasting effects, and can still reach more than 99% after 1 month of antibacterial test, and the comparative examples 2-5 show that the hydrophobic property of the product is deteriorated to a certain extent without adding the hydrophobic modified nano stabilizer and by replacing the hydrophobic modified nano stabilizer with nano silicon dioxide, the hydrophobic property of the product is different, meanwhile, the hydrophobic modified nano stabilizer has different preparation methods and different hydrophobic effects, the hydrophobic modified nano stabilizer prepared by the method of the invention has the most obvious hydrophobic effect on the product, and the comparative examples 6-7 show that the interface modified coupling agent and the hydrophobic modified nano stabilizer are cooperated to jointly enhance the hydrophobic effect of the product through the treatment of the interface modified coupling agent;
the antibacterial and bacteriostatic properties are shown;
the modified nano zinc oxide synergistic bentonite composite modifier is replaced by nano zinc oxide, the antibacterial performance of the product is basically the same, but after 7 days/1 month, the antibacterial performance of the product is obviously reduced, meanwhile, the hydrophobic modified nano stabilizer is not added, and the interface modified coupling agent is not used for treatment, so that the antibacterial stability of the product has an obvious reduction trend.
The preparation method of the modified nano zinc oxide synergistic bentonite composite modifier comprises the following steps:
s01: adding 12.5 parts of nano zinc oxide into 35 parts of water, then adding 3.5 parts of lanthanum sulfate solution and 4.5 parts of sodium carboxymethylcellulose, stirring at the rotating speed of 400r/min for 25min, then adding 7 parts of dispersed graphene and 2 parts of hydrochloric acid, continuously stirring for 15min, and after stirring, washing and drying to obtain modified nano zinc oxide;
s02: adding 15 parts of sodium alginate into 45 parts of water, then adding 3 parts of 1,4-naphthalenedicarboxylic acid, stirring and mixing fully, finally adding a phosphoric acid buffer solution, and adjusting the pH value to 5.5 to obtain a modified solution;
s03: adding 7.5 parts of bentonite into 40 parts of the modification liquid, then adding 10 parts of modified nano-zinc oxide, stirring at 65 ℃ for 40min at the stirring speed of 750r/min, finishing stirring, washing with water, and drying to obtain the modified nano-zinc oxide synergistic bentonite composite modifier.
The mass fraction of the lanthanum sulfate solution was 7.5%.
And (3) sending the dispersed graphene into a ball mill for ball milling for 25min, wherein the ball milling rotation speed is 1250r/min, finishing ball milling, placing the ball mill into a hydrochloric acid solution with the mass fraction of 6%, performing ultrasonic dispersion for 25min, wherein the ultrasonic power is 175W, finishing ultrasonic dispersion, washing and drying to obtain the dispersed graphene.
The product performance is further researched by the modified nano zinc oxide synergistic bentonite composite modifier;
experimental example 1.
The same as example 3, except that no dispersed graphene was added.
Experimental example 2.
The same procedure as in example 3 was repeated except that the graphene material of the dispersion-type graphene was replaced with carbon nanotubes, and the dispersibility was performed in the same manner.
Experimental example 3.
The same as in example 3, except that the dispersed graphene was replaced by graphene without any treatment.
Experimental example 4.
The same as example 3 except that the modified solution was not treated;
the preparation method of the modified nano zinc oxide synergistic bentonite composite modifier comprises the following steps:
adding 12.5 parts of nano zinc oxide into 35 parts of water, then adding 3.5 parts of lanthanum sulfate solution and 4.5 parts of sodium carboxymethylcellulose, stirring at the rotating speed of 400r/min for 25min, then adding 7 parts of dispersed graphene and 2 parts of hydrochloric acid, continuing stirring for 15min, after stirring, adding 7.5 parts of bentonite, stirring at the temperature of 65 ℃ for 40min, wherein the stirring rotating speed is 750r/min, and finally washing and drying to obtain the nano zinc oxide synergistic bentonite composite modifier.
From the experimental examples 1-4, it can be seen that the antibacterial performance after 7 days and 1 month without adding the dispersion type graphene and the antibacterial performance without adding the nano zinc oxide synergistic bentonite composite modifier subjected to the modification treatment have a significant deterioration trend, but the antibacterial change without adding the nano zinc oxide synergistic bentonite composite modifier subjected to the modification treatment is significant, and meanwhile, the carbon nanotube substitution shows that the long-term antibacterial effect deterioration trend is still significant, so that the graphene and the bentonite can have a synergistic effect when used, the antibacterial stability of the product is enhanced by the cooperation of the graphene and the bentonite, and the significant effect of the invention cannot be achieved by adopting other raw materials for substitution;
meanwhile, after the graphene is subjected to the preparation method of the dispersion type graphene, the antibacterial stability of the product is improved, and the treatment of the modification liquid is improved; the modified nano zinc oxide synergistic bentonite composite modifier prepared by the method has an obvious effect on the antibacterial stability of the product, and the effect of the invention cannot be achieved by other methods.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The water-based single-component antibacterial children whiteboard paint is characterized by comprising the following raw materials in parts by weight:
55-75 parts of water-based resin, 10-15 parts of modified nano zinc oxide synergistic bentonite composite modifier, 5-10 parts of hydrophobic modified nano stabilizer, 3-8 parts of wetting dispersant, 2-6 parts of film forming additive, 1-4 parts of interface modified coupling agent and 80-100 parts of water;
the preparation method of the modified nano zinc oxide synergistic bentonite composite modifier comprises the following steps:
s01: adding 10-15 parts of nano zinc oxide into 30-40 parts of water, then adding 2-5 parts of lanthanum sulfate solution and 3-6 parts of sodium carboxymethylcellulose, stirring at the rotating speed of 300-500r/min for 20-30min, then adding 5-9 parts of dispersed graphene and 1-3 parts of hydrochloric acid, continuing stirring for 10-20min, and after stirring, washing with water and drying to obtain modified nano zinc oxide;
s02: adding 10-20 parts of sodium alginate into 40-50 parts of water, then adding 1-5 parts of 1,4-naphthalene dicarboxylic acid, stirring and mixing fully, finally adding a phosphoric acid buffer solution, and adjusting the pH value to 5.5 to obtain a modified solution;
s03: adding 5-10 parts of bentonite into 35-45 parts of the modification liquid, then adding 8-12 parts of modified nano zinc oxide, stirring at 60-70 ℃ for 35-45min at the stirring speed of 500-1000r/min, finishing stirring, washing with water, and drying to obtain the modified nano zinc oxide synergistic bentonite composite modifier;
the preparation method of the hydrophobic modified nano stabilizer comprises the following steps:
ultrasonically dispersing 5-10 parts of nano silicon dioxide in 40-50 parts of acetone for 10-20min, wherein the ultrasonic power is 300-350W, and finishing the ultrasonic treatment for later use; adding 3-6 parts of tetramethyldisiloxane into 10-15 parts of ethanol, then adding 2-4 parts of chitosan and 1-3 parts of castor oil, and stirring and fully mixing to obtain a hydrophobic modifier; mixing the product to be used and a hydrophobic modifier according to a weight ratio of 1: (5-9), stirring at 60-65 ℃ for full reaction, finishing stirring, washing with water, and drying to obtain the hydrophobic modified nano stabilizer;
the interface modified coupling agent comprises the following raw materials in parts by weight: 5-10 parts of a coupling agent KH560 and 2-5 parts of rare earth lanthanum chloride.
2. The aqueous single-component antibacterial children whiteboard paint as claimed in claim 1, wherein the children whiteboard paint comprises the following raw materials in parts by weight:
60 parts of water-based resin, 12.5 parts of modified nano zinc oxide synergistic bentonite composite modifier, 7.5 parts of hydrophobic modified nano stabilizer, 5.5 parts of wetting dispersant, 4 parts of film forming assistant, 2.5 parts of interface modified coupling agent and 90 parts of water.
3. The aqueous one-component antibacterial children's whiteboard paint as claimed in claim 1, wherein the aqueous resin is a silicone hydrophobic resin and is an α, ω -dihydroxy polymethylsiloxane resin having a viscosity of 2500-3000mpa.s.
4. The aqueous single-component antibacterial children whiteboard paint as claimed in claim 1, wherein the mass fraction of the lanthanum sulfate solution is 5-10%.
5. The aqueous single-component antibacterial children whiteboard paint as claimed in claim 4, wherein the dispersed graphene is prepared by feeding graphene into a ball mill for ball milling for 20-30min, the ball milling rotation speed is 1000-1500r/min, after ball milling is finished, placing the graphene in a hydrochloric acid solution with the mass fraction of 5-7% for ultrasonic dispersion for 20-30min, the ultrasonic power is 150-200W, and after ultrasonic finishing, washing and drying.
6. The aqueous one-component antibacterial children whiteboard paint as claimed in claim 1, wherein the wetting dispersant is one of digao 760W and 762W; the film-forming assistant is polyethylene glycol.
7. A preparation method of the water-based single-component antibacterial children whiteboard paint as defined in any one of claims 1 to 6, comprising the following steps:
the method comprises the following steps: adding the modified nano zinc oxide synergistic bentonite composite modifier and the hydrophobic modified nano stabilizer into a stirrer to obtain a material to be used;
step two: then adding an interface modification coupling agent, stirring and mixing for 10-20min at the rotating speed of 550-750r/min to obtain a mixed material A;
step three: then sequentially adding the water-based resin and the water, and continuously stirring for 5-10min;
step four: and adding the wetting dispersant and the film-forming assistant, stirring for 1-5min, and finishing stirring to obtain the water-based single-component antibacterial child whiteboard paint.
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