CN114426784A - Nano inorganic coating for exterior wall and preparation method thereof - Google Patents
Nano inorganic coating for exterior wall and preparation method thereof Download PDFInfo
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- CN114426784A CN114426784A CN202210032973.8A CN202210032973A CN114426784A CN 114426784 A CN114426784 A CN 114426784A CN 202210032973 A CN202210032973 A CN 202210032973A CN 114426784 A CN114426784 A CN 114426784A
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- 238000000576 coating method Methods 0.000 title claims abstract description 59
- 239000011248 coating agent Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims abstract description 39
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 36
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 30
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 29
- 239000008367 deionised water Substances 0.000 claims abstract description 24
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 24
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000003973 paint Substances 0.000 claims abstract description 18
- 239000011787 zinc oxide Substances 0.000 claims abstract description 18
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims abstract description 17
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000005751 Copper oxide Substances 0.000 claims abstract description 15
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 15
- 229910000431 copper oxide Inorganic materials 0.000 claims abstract description 15
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 11
- 239000003381 stabilizer Substances 0.000 claims abstract description 9
- 239000003899 bactericide agent Substances 0.000 claims abstract description 8
- 230000003449 preventive effect Effects 0.000 claims abstract description 8
- 230000008719 thickening Effects 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 43
- 238000000034 method Methods 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 14
- 229940058020 2-amino-2-methyl-1-propanol Drugs 0.000 claims description 13
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical group CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 claims description 13
- -1 dodecyl alcohol ester Chemical class 0.000 claims description 13
- LQZZUXJYWNFBMV-UHFFFAOYSA-N ethyl butylhexanol Natural products CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 7
- 239000006185 dispersion Substances 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- 239000012752 auxiliary agent Substances 0.000 claims description 4
- 229910000281 calcium bentonite Inorganic materials 0.000 claims description 4
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 claims description 4
- 229920002545 silicone oil Polymers 0.000 claims description 4
- 229910000280 sodium bentonite Inorganic materials 0.000 claims description 4
- 229940080314 sodium bentonite Drugs 0.000 claims description 4
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 abstract description 7
- 230000001070 adhesive effect Effects 0.000 abstract description 7
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 3
- 230000001680 brushing effect Effects 0.000 abstract description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052753 mercury Inorganic materials 0.000 abstract description 2
- 239000012855 volatile organic compound Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 230000003115 biocidal effect Effects 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 231100000956 nontoxicity Toxicity 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920000193 polymethacrylate Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- DAFHKNAQFPVRKR-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylpropanoate Chemical compound CC(C)C(O)C(C)(C)COC(=O)C(C)C DAFHKNAQFPVRKR-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002155 anti-virotic effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000003440 toxic substance Substances 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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- 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
- C09D5/08—Anti-corrosive paints
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- 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
-
- 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
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C09D7/66—Additives characterised by particle size
- C09D7/67—Particle size smaller than 100 nm
Abstract
The invention relates to a nano inorganic coating for an exterior wall and a preparation method thereof, wherein the coating comprises the following components in parts by weight: 18-20 parts of deionized water, 15-25 parts of silica sol, 0.8-1.5 parts of propylene glycol, 14-28 parts of nano titanium dioxide, 18-43 parts of nano calcium carbonate, 2-6 parts of nano zinc oxide, 2-6 parts of nano copper oxide, 0.4-1.2 parts of film-forming assistant, 0.4-0.8 part of pH value stabilizer, 0.4-1.0 part of defoaming and leveling agent, 0.1-0.3 part of thickening and anti-settling agent, 0.1-0.4 part of bactericide and 0.4-0.8 part of mildew preventive. Compared with the prior art, the paint produced by the invention has the advantages of hardness, good glossiness, strong impact resistance, difficult cracking, soft texture, high weather resistance, brushing resistance, strong adhesive force, long service life, no special smell, no mercury, lead and other heavy metals, and no VOC volatile matter.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a nano inorganic coating for an outer wall and a preparation method thereof.
Background
Since the twenty-first century, the development trend of water-based, green, multifunctional and photocatalytic antibacterial coatings for exterior walls of buildings has been, and with the improvement of living standard of people, the functions of the exterior wall coatings, such as antibiosis, mildew prevention, sterilization and the like, are gradually known, so that higher standards are provided for the decorative effect of the coatings.
At present, the exterior wall coating adopted in China mainly takes water-based acrylic emulsion as a base material, has the advantages of moderate cost, good weather resistance, good adjustability, no release of organic solvent and the like, and is a coating which is developed rapidly in the century. The residual VOC of the acrylic emulsion and various added organic auxiliary agents still cause pollution to outdoor air and harm to human health. With the enhancement of environmental protection consciousness, the environmental protection requirement on outdoor decoration paint is higher and higher. In addition, the acrylic emulsion raw materials are all derived from limited petroleum resources. Therefore, it is very urgent to develop a new generation of paint with simple production process, low cost, safety and no toxicity to replace organic paint.
The inorganic coating is a coating which takes inorganic materials as main film-forming substances. The inorganic paint can be firmly combined with the wall surface base material through chemical bonds to form an inorganic polymer anticorrosive coating which has strong adhesive force, fire resistance, flame retardance, good corrosion resistance and mildew resistance, excellent air permeability, dry and comfortable wall surface and aging resistance superior to most organic paints, thereby having excellent technical and economic properties. The water-based inorganic coating takes water as a dispersion medium and a diluent, does not contain toxic substances such as VOC, free formaldehyde, benzene and the like, has no pollution to the environment and no harm to the human body, and is a green building product which completely meets the requirement of environmental protection. The water-based inorganic coating takes silicate (mainly sodium silicate) aqueous solution as an adhesive between inorganic matters, and the coating has strong binding force, high strength, good alkali resistance and heat resistance, but the water resistance of the sodium silicate adhesive is poor, so that the service life of the coating is shortened, and the large-scale application of the coating in the field of building coating is greatly restricted.
Disclosure of Invention
The invention aims to provide a nano inorganic coating for an outer wall and a preparation method thereof, which can improve the water resistance.
The purpose of the invention can be realized by the following technical scheme: a nano inorganic coating for exterior walls comprises the following components in parts by weight: 18-20 parts of deionized water, 15-25 parts of silica sol, 0.8-1.5 parts of propylene glycol, 14-28 parts of nano titanium dioxide, 18-43 parts of nano calcium carbonate, 2-6 parts of nano zinc oxide, 2-6 parts of nano copper oxide, 0.4-1.2 parts of film forming auxiliary agent, 0.4-0.8 part of pH value stabilizer, 0.4-1.0 part of defoaming and leveling agent, 0.1-0.3 part of thickening and anti-settling agent, 0.1-0.4 part of bactericide and 0.4-0.8 part of mildew preventive.
Preferably, the silica sol is a dispersion of nano-sized silica particles in water or a solvent, and the particle size is 20nm to 80 nm.
Preferably, the nano titanium dioxide is rutile nano titanium dioxide with the particle size of 10nm-85 nm;
the particle size of the nano calcium carbonate is 10nm-85 nm.
Preferably, the coalescing agent is a dodecanol ester. The dodecyl alcohol ester is an alcohol ester compound with the chemical name of 2,2, 4-trimethyl-1, 3-pentanediol monoisobutyrate and the trade name of dodecyl alcohol ester or alcohol ester-12.
The propylene glycol can also be used as a film forming aid, plays a role in leveling and antifreezing and is of an industrial grade.
Preferably, the pH stabilizer is 2-amino-2-methyl-1-propanol (AMP).
Preferably, the defoaming and leveling agent is a combination of stearic acid, polyacrylate and silicone oil.
Preferably, the thickening anti-settling agent is calcium bentonite and/or sodium bentonite.
Preferably, the bactericide is nano copper oxide with the particle size of 20-85 nm;
the mildew preventive is nano zinc oxide with the particle size of 15-85 nm.
A preparation method of the nano inorganic coating for the outer wall comprises the following steps:
(1) dispersing 14-28 parts by weight of nano titanium dioxide particles into 3-5 parts by weight of deionized water at normal temperature, and centrifugally stirring to obtain a suspension containing nano titanium dioxide;
(2) dispersing 18-43 parts of nano calcium carbonate into 5-12 parts of deionized water at normal temperature, mixing, and adding into a suspension containing nano titanium dioxide;
(3) at normal temperature, adding the rest deionized water, 0.4-1.2 parts of film-forming additive, 2-6 parts of nano zinc oxide, 2-6 parts of nano copper oxide and 0.8-1.5 parts of propylene glycol, and stirring;
(4) adding 15-25 parts of silica sol at normal temperature, and stirring;
(5) adding the rest raw materials except the defoaming and leveling agent, and uniformly stirring;
(6) adding 0.4-1.0 part of defoaming and leveling agent, and sanding at 15-35 ℃ to obtain the nano inorganic paint for the exterior wall.
Preferably, in the centrifugal stirring process in the step (1), the stirring speed is 1500-;
in the mixing process in the step (2), the stirring speed is 900-;
in the stirring process in the step (3), the stirring speed is 700-;
in the stirring process in the step (4), the stirring speed is 500-;
in the stirring process in the step (5), the stirring rotating speed is 400-;
in the sanding process in the step (6), the rotating speed is 600-900r/min, and the sanding time is 2-4 h.
Specifically, the preparation method of the nano inorganic coating for the exterior wall comprises the following steps:
(1) at normal temperature, dispersing 14-28 parts by weight of nano titanium dioxide particles into 3-5 parts of deionized water, and centrifugally stirring at high speed of 1500-;
(2) at normal temperature, dispersing 18-43 parts of nano calcium carbonate into 5-12 parts of deionized water, mixing, adding into a dispersion cylinder, and stirring at the speed of 900-;
(3) at normal temperature, adding the rest deionized water, 0.4-1.2 parts of dodecyl alcohol ester, 2-6 parts of nano zinc oxide, 2-6 parts of nano copper oxide and 0.8-1.5 parts of propylene glycol, and stirring for 20-25min at the speed of 700 plus materials of 800 r/min;
(4) at normal temperature, 15-25 parts of silica sol is added, and the mixture is stirred for 5-10min at the speed of 500-700 r/min;
(5) adding the rest raw materials except the defoaming and leveling agent, and uniformly stirring at the speed of 400-600 r/min;
(6) preparing a water-based inorganic coating: 0.4 to 1.0 part of defoaming and leveling agent is added into the aqueous slurry according to the proportion, and the mixture is sanded for 2 to 4 hours at the temperature of between 15 and 35 ℃ and at the rotating speed of 600 and 900r/min, so as to obtain the nano inorganic coating for the exterior wall.
The paint produced by the invention has the advantages of hardness, good glossiness, strong impact resistance, difficult cracking, soft texture, high weather resistance, brushing resistance, strong adhesive force, long service life, no special smell, no mercury, lead and other heavy metals, and no VOC volatile matter.
Compared with the prior art, the invention has the following advantages:
1. the invention provides a novel green nano inorganic coating for an external wall, which has the advantages of good storage stability, strong adhesive force, good toughness, corrosion resistance, antibiosis, stain resistance, aging resistance, good heat resistance, greenness, no toxicity, water resistance and alkali resistance;
2. the coating disclosed by the invention has the characteristics of fire resistance, flame retardance, antibiosis, mildew prevention, strong coating adhesion, high strength and hardness, scraping resistance and wear resistance, has excellent water resistance, alkali resistance and storage stability, does not contain formaldehyde, benzene series, Volatile Organic Compounds (VOC) and heavy metal elements which are harmful to human health, is green and environment-friendly, completely meets the national green and environment-friendly requirements, and is easy for expanded large-scale production;
3. the invention takes inorganic matter silica sol as film forming matter and hardening accelerator, which can effectively enhance the curing strength of water-based inorganic paint, takes nano calcium carbonate as reinforcing agent of silica sol, improves the thermal stability and tensile strength, increases the strength of the coating, and can enhance the lubricating property of the coating and reduce the abrasion of the coating;
4. the invention comprehensively utilizes TiO2And ZnO nanoparticles have coupling effectThe capability of photocatalytic degradation of volatile organic compounds of the coating is effectively enhanced, various bacteria are killed, the ultraviolet shielding effect can be achieved, and the ultraviolet aging resistance of the coating is improved;
5. according to the invention, the acid resistance, alkali resistance and high temperature resistance of the nano titanium dioxide are utilized to improve the flame retardance and chemical corrosion resistance of the coating, and a compact protective layer can be formed by utilizing the special structure of the titanium dioxide, so that the mechanical strength and toughness of the coating are improved, the cracking and pulverization of the coating are prevented, the water resistance and permeability of the coating are enhanced, in addition, the covering power of the coating can be improved, the using amount of high-price pigment is reduced, and the cost is reduced;
6. the invention takes AMP (2-amino-2-methyl-1-propanol) with mild chemical property as a pH value stabilizer, and has simple and controllable process, safety and environmental protection;
7. the invention utilizes specific amounts of nano zinc oxide and nano copper oxide in the coating, and nano TiO2Together, the VOC degrading, antibacterial and antivirus functions of the inorganic coating are greatly improved.
Detailed Description
The following examples are given to illustrate the present invention, and the following examples are carried out on the premise of the technical solution of the present invention, and give detailed embodiments and specific procedures, but the scope of the present invention is not limited to the following examples.
Example 1
A green nano inorganic coating for exterior walls comprises the following raw materials in parts by weight:
18 parts of deionized water, 18.4 parts of silica sol, 0.8 part of propylene glycol, 14 parts of nano titanium dioxide, 43 parts of nano calcium carbonate, 2 parts of nano zinc oxide, 2 parts of nano copper oxide, 0.4 part of film forming aid dodecyl alcohol ester, 0.4 part of pH value stabilizer AMP (2-amino-2-methyl-1-propanol), 0.4 part of defoaming and leveling agent stearic acid, 0.1 part of thickening anti-settling agent calcium bentonite, 0.1 part of bactericide nano CuO and 0.4 part of mildew preventive nano ZnO.
The preparation method of the green nano inorganic coating for the outer wall comprises the following steps:
(1) at normal temperature, dispersing 14 parts by weight of nano titanium dioxide particles into 3-5 parts of deionized water, and centrifugally stirring at high speed of 1500-;
(2) at normal temperature, 43 parts of nano calcium carbonate is dispersed into 5-12 parts of deionized water to be mixed, added into a dispersion cylinder and stirred for 10-15 minutes at the speed of 900 plus 1000 rpm;
(3) at normal temperature, adding the rest deionized water, 0.4 part of dodecyl alcohol ester, 2 parts of nano zinc oxide, 2 parts of nano copper oxide and 0.8 part of propylene glycol, and stirring for 20-25 minutes at the speed of 700 plus materials at 800 rpm;
(4) at normal temperature, adding 18.4 parts of silica sol, and stirring for 5-10 minutes at the speed of 500-700 rpm;
(5) adding the rest raw materials except the defoaming and leveling agent, and uniformly stirring at the speed of 600 revolutions per minute of 400-;
(6) preparing a water-based inorganic coating: 0.4 part of defoaming and leveling agent is added into the aqueous slurry according to the proportion, and the mixture is sanded for 2 to 4 hours at the temperature of between 15 and 35 ℃ and the rotating speed of 600-900r/min, thus obtaining the green nano inorganic coating for the exterior wall.
Example 2
A green nano inorganic coating for exterior walls comprises the following raw materials in parts by weight:
20 parts of deionized water, 24 parts of silica sol, 1.5 parts of propylene glycol, 20 parts of nano titanium dioxide, 18 parts of nano calcium carbonate, 6 parts of nano zinc oxide, 6 parts of nano copper oxide, 1.2 parts of a film-forming aid, namely dodecyl alcohol ester, 0.8 part of a pH value stabilizer AMP (2-amino-2-methyl-1-propanol), 1.0 part of a defoaming leveling agent, polymethacrylate, 0.3 part of a thickening anti-settling agent, sodium bentonite, 0.4 part of nano CuO serving as a bactericide and 0.8 part of a mildew preventive ZnO.
The preparation method of the green nano inorganic coating for the outer wall comprises the following steps:
(1) at normal temperature, dispersing 20 parts by weight of nano titanium dioxide particles into 3-5 parts of deionized water, and centrifugally stirring at high speed of 1500-;
(2) at normal temperature, dispersing 18 parts of nano calcium carbonate into 5-12 parts of deionized water, mixing, adding into a dispersion cylinder, and stirring for 10-15 minutes at the speed of 900 plus 1000 rpm;
(3) at normal temperature, adding the rest deionized water, 1.2 parts of dodecyl alcohol ester, 0.8 part of AMP, 6 parts of nano zinc oxide, 6 parts of nano copper oxide and 1.5 parts of propylene glycol, and stirring for 20-25 minutes at the speed of 700 plus 800 rpm;
(4) at normal temperature, 24 parts of silica sol is added, and the mixture is stirred for 5 to 10 minutes at the speed of 500-700 r/min;
(5) adding the rest raw materials except the defoaming and leveling agent, and stirring uniformly at the speed of 400-600 revolutions per minute;
(6) preparing a water-based inorganic coating: adding 1.0 part of defoaming and leveling agent polymethacrylate into the aqueous slurry according to the ratio, and sanding for 2-4 hours at the temperature of 15-35 ℃ and the rotating speed of 600-900r/min to obtain the green nano inorganic coating for the exterior wall.
Example 3
A green nano inorganic coating for exterior walls comprises the following raw materials in parts by weight:
19 parts of deionized water, 18 parts of silica sol, 1.0 part of propylene glycol, 22 parts of nano titanium dioxide, 30.2 parts of nano calcium carbonate, 3 parts of nano zinc oxide, 4 parts of nano copper oxide, 0.6 part of film forming auxiliary agent dodecyl alcohol ester, 0.6 part of pH value stabilizer AMP (2-amino-2-methyl-1-propanol), 0.6 part of defoaming and leveling agent silicone oil, 0.1 part of thickening anti-settling agent calcium bentonite, 0.1 part of sodium bentonite, 0.3 part of bactericide and 0.5 part of mildew preventive.
The preparation method of the green nano inorganic coating for the outer wall comprises the following steps:
(1) dispersing 22 parts by weight of nano titanium dioxide particles into 5 parts of deionized water at normal temperature, and carrying out high-speed 1500-2000r/m centrifugal stirring for 20-30 minutes to obtain a suspension containing nano titanium dioxide;
(2) at normal temperature, dispersing 30.2 parts of nano calcium carbonate into 10 parts of deionized water, mixing, adding into a dispersion cylinder, and stirring for 10-15 minutes at the speed of 900 plus 1000 rpm;
(3) at normal temperature, adding the rest deionized water, 0.6 part of dodecyl alcohol ester, 0.6 part of AMP, 3 parts of nano zinc oxide, 4 parts of nano copper oxide and 1.0 part of propylene glycol, and stirring for 20-25 minutes at the speed of 700 plus 800 rpm;
(4) at normal temperature, adding 18 parts of silica sol, and stirring for 5-10 minutes at the speed of 500-700 rpm;
(5) adding the rest raw materials except the defoaming and leveling agent, and uniformly stirring at the speed of 600 revolutions per minute of 400-;
(6) preparing a water-based inorganic coating: 0.6 part of defoaming and leveling agent silicone oil is added into the aqueous slurry according to the proportion, and the mixture is sanded for 2 to 4 hours at the temperature of between 15 and 35 ℃ and the rotating speed of 600 and 900r/min, thus obtaining the green nano inorganic coating for the exterior wall.
The performance test of the green nano inorganic coating for exterior walls prepared in examples 1-3 shows the following results:
the green nano inorganic coating for the outer wall inherits the advantages of the traditional water-based inorganic coating taking silicate aqueous solution as an inter-inorganic-substance adhesive, has the advantages of strong adhesion, flame retardance, high temperature resistance, scratch resistance, good alkali resistance, no VOC, no heavy metal elements and the like, is stain-resistant, corrosion-resistant, antibacterial, high in obdurability, good in storage stability and excellent in water resistance, is green, environment-friendly and non-toxic in the production and use processes, meets the requirements of outdoor decoration, is easy to paint, convenient and fast to construct, and is suitable for large-scale industrial production.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The nano inorganic coating for the outer wall is characterized by comprising the following components in parts by weight: 18-20 parts of deionized water, 15-25 parts of silica sol, 0.8-1.5 parts of propylene glycol, 14-28 parts of nano titanium dioxide, 18-43 parts of nano calcium carbonate, 2-6 parts of nano zinc oxide, 2-6 parts of nano copper oxide, 0.4-1.2 parts of film forming auxiliary agent, 0.4-0.8 part of pH value stabilizer, 0.4-1.0 part of defoaming and leveling agent, 0.1-0.3 part of thickening and anti-settling agent, 0.1-0.4 part of bactericide and 0.4-0.8 part of mildew preventive.
2. The nano inorganic paint for external wall as claimed in claim 1, wherein the silica sol is a dispersion of nano silica particles with a particle size of 20nm-80nm in water or solvent.
3. The nano inorganic paint for the exterior wall of claim 1, wherein the nano titanium dioxide is rutile nano titanium dioxide with the particle size of 10nm-85 nm;
the particle size of the nano calcium carbonate is 10nm-85 nm.
4. The nano inorganic paint for external walls as claimed in claim 1, wherein the film forming assistant is dodecyl alcohol ester.
5. The nano inorganic paint for external walls as claimed in claim 1, wherein the pH stabilizer is 2-amino-2-methyl-1-propanol.
6. The nano inorganic paint for external walls as claimed in claim 1, wherein the defoaming and leveling agent is a combination of stearic acid, polyacrylate and silicone oil.
7. The nano inorganic paint for the exterior wall of claim 1, wherein the thickening anti-settling agent is calcium bentonite and/or sodium bentonite.
8. The nano inorganic paint for the exterior wall of claim 1, wherein the bactericide is nano copper oxide with a particle size of 20-85 nm;
the mildew preventive is nano zinc oxide with the particle size of 15-85 nm.
9. The preparation method of the nano inorganic coating for the outer wall of any one of claims 1 to 8, which comprises the following steps:
(1) dispersing 14-28 parts by weight of nano titanium dioxide particles into 3-5 parts by weight of deionized water at normal temperature, and centrifugally stirring to obtain a suspension containing nano titanium dioxide;
(2) dispersing 18-43 parts of nano calcium carbonate into 5-12 parts of deionized water at normal temperature, mixing, and adding into a suspension containing nano titanium dioxide;
(3) at normal temperature, adding the rest deionized water, 0.4-1.2 parts of film-forming additive, 2-6 parts of nano zinc oxide, 2-6 parts of nano copper oxide and 0.8-1.5 parts of propylene glycol, and stirring;
(4) adding 15-25 parts of silica sol at normal temperature, and stirring;
(5) adding the rest raw materials except the defoaming and leveling agent, and uniformly stirring;
(6) adding 0.4-1.0 part of defoaming and leveling agent, and sanding at 15-35 ℃ to obtain the nano inorganic paint for the exterior wall.
10. The method for preparing the inorganic coating material for the exterior wall of the nanometer as claimed in claim 9, wherein in the centrifugal stirring process in the step (1), the stirring speed is 1500-;
in the mixing process in the step (2), the stirring speed is 900-;
in the stirring process in the step (3), the stirring speed is 700-;
in the stirring process in the step (4), the stirring speed is 500-;
in the stirring process in the step (5), the stirring rotating speed is 400-;
in the sanding process in the step (6), the rotating speed is 600-900r/min, and the sanding time is 2-4 h.
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| CN115057725A (en) * | 2022-05-23 | 2022-09-16 | 河北领标科技发展有限公司 | Anti-fouling waterproof ceramic rock plate and preparation method thereof |
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| CN107266944A (en) * | 2017-08-11 | 2017-10-20 | 成都职业技术学院 | A kind of novel environment-friendly water-based inorganic coating and preparation method thereof |
| CN109957262A (en) * | 2019-04-04 | 2019-07-02 | 泰兴库本机电有限公司 | Coating, coating and preparation method thereof for material surface processing |
| CN111019417A (en) * | 2019-12-16 | 2020-04-17 | 青岛环秀涂料有限公司 | Inorganic heat-preservation, heat-insulation, fireproof and hydrophobic coating and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107266944A (en) * | 2017-08-11 | 2017-10-20 | 成都职业技术学院 | A kind of novel environment-friendly water-based inorganic coating and preparation method thereof |
| CN109957262A (en) * | 2019-04-04 | 2019-07-02 | 泰兴库本机电有限公司 | Coating, coating and preparation method thereof for material surface processing |
| CN111019417A (en) * | 2019-12-16 | 2020-04-17 | 青岛环秀涂料有限公司 | Inorganic heat-preservation, heat-insulation, fireproof and hydrophobic coating and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115057725A (en) * | 2022-05-23 | 2022-09-16 | 河北领标科技发展有限公司 | Anti-fouling waterproof ceramic rock plate and preparation method thereof |
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