CN118185399A - Preparation method of water-based nano waterproof thermal-insulation coating special for granary - Google Patents
Preparation method of water-based nano waterproof thermal-insulation coating special for granary Download PDFInfo
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- CN118185399A CN118185399A CN202410283847.9A CN202410283847A CN118185399A CN 118185399 A CN118185399 A CN 118185399A CN 202410283847 A CN202410283847 A CN 202410283847A CN 118185399 A CN118185399 A CN 118185399A
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- 238000000576 coating method Methods 0.000 title claims abstract description 109
- 239000011248 coating agent Substances 0.000 title claims abstract description 98
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 238000002360 preparation method Methods 0.000 title claims abstract description 39
- 238000009413 insulation Methods 0.000 title claims description 20
- 239000000203 mixture Substances 0.000 claims abstract description 79
- 229920000642 polymer Polymers 0.000 claims abstract description 74
- 239000000463 material Substances 0.000 claims abstract description 69
- 239000002904 solvent Substances 0.000 claims abstract description 52
- 239000002086 nanomaterial Substances 0.000 claims abstract description 45
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 38
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000002105 nanoparticle Substances 0.000 claims abstract description 32
- 239000003755 preservative agent Substances 0.000 claims abstract description 20
- 230000002335 preservative effect Effects 0.000 claims abstract description 20
- 239000011787 zinc oxide Substances 0.000 claims abstract description 19
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 18
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 17
- 239000013538 functional additive Substances 0.000 claims abstract description 13
- 239000003623 enhancer Substances 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims description 38
- 239000000839 emulsion Substances 0.000 claims description 31
- 239000003431 cross linking reagent Substances 0.000 claims description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 21
- 230000000844 anti-bacterial effect Effects 0.000 claims description 19
- 239000012752 auxiliary agent Substances 0.000 claims description 19
- 239000003973 paint Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 13
- 239000012744 reinforcing agent Substances 0.000 claims description 12
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 9
- 239000003242 anti bacterial agent Substances 0.000 claims description 9
- 238000000498 ball milling Methods 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 9
- 238000000746 purification Methods 0.000 claims description 9
- 239000003607 modifier Substances 0.000 claims description 7
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 7
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 7
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 7
- 238000009210 therapy by ultrasound Methods 0.000 claims description 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 6
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000007720 emulsion polymerization reaction Methods 0.000 claims description 5
- 239000012046 mixed solvent Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 238000006116 polymerization reaction Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 239000004408 titanium dioxide Substances 0.000 claims description 5
- -1 acrylic ester Chemical class 0.000 claims description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 4
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 4
- 239000004327 boric acid Substances 0.000 claims description 4
- 239000012948 isocyanate Substances 0.000 claims description 4
- 150000002513 isocyanates Chemical group 0.000 claims description 4
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000005456 alcohol based solvent Substances 0.000 claims description 3
- 239000003125 aqueous solvent Substances 0.000 claims description 3
- 238000002425 crystallisation Methods 0.000 claims description 3
- 230000008025 crystallization Effects 0.000 claims description 3
- 238000004821 distillation Methods 0.000 claims description 3
- 238000004508 fractional distillation Methods 0.000 claims description 3
- 238000007710 freezing Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 claims description 3
- 239000003456 ion exchange resin Substances 0.000 claims description 3
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims description 3
- 238000005374 membrane filtration Methods 0.000 claims description 3
- 238000001223 reverse osmosis Methods 0.000 claims description 3
- 239000005711 Benzoic acid Substances 0.000 claims description 2
- 235000010233 benzoic acid Nutrition 0.000 claims description 2
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 claims description 2
- 239000002270 dispersing agent Substances 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000003381 stabilizer Substances 0.000 claims description 2
- 239000002562 thickening agent Substances 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000036541 health Effects 0.000 abstract description 3
- 230000000845 anti-microbial effect Effects 0.000 abstract 1
- 239000004599 antimicrobial Substances 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 description 13
- 238000011056 performance test Methods 0.000 description 10
- 238000012360 testing method Methods 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 5
- 239000012855 volatile organic compound Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 235000011187 glycerol Nutrition 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002114 nanocomposite Substances 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- HPTYUNKZVDYXLP-UHFFFAOYSA-N aluminum;trihydroxy(trihydroxysilyloxy)silane;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O[Si](O)(O)O HPTYUNKZVDYXLP-UHFFFAOYSA-N 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000012767 functional filler Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052621 halloysite Inorganic materials 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920005792 styrene-acrylic resin Polymers 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Plant Pathology (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The application discloses a preparation method of a special water-based nano waterproof heat-insulating coating for a granary, which relates to the technical field of heat-insulating coating material preparation, and the application effectively improves the heat-insulating performance of the coating by introducing nano material mixture, zinc oxide and silicon dioxide nano particles, thereby protecting the interior of the granary from the influence of external environment, improving the durability and corrosion resistance of the coating by adopting a water-based polymer base material to strengthen and adopting a functional additive such as a mildew-resistant preservative and a weather-resistant enhancer, prolonging the service life of the coating, and improving the environmental protection performance of the coating by adopting a water-based polymer base material and an environment-friendly solvent and adding an antimicrobial functional additive, thereby reducing the pollution to the environment and the influence on the health of human body; in conclusion, by the coating preparation method provided by the application, the waterproof and heat-insulating properties, durability and environmental protection properties of the coating are obviously improved, so that articles in the granary are better protected from the influence of external environment, and the protection effect and the service life of the granary are improved.
Description
Technical Field
The invention relates to the technical field of preparation of heat-insulating coating materials, in particular to a preparation method of a water-based nano waterproof heat-insulating coating special for a granary.
Background
The heat-insulating coating refers to a recently developed functional water-based coating for blocking, reflecting and radiating near infrared heat of sunlight, so that the roof is heat-insulating, cooling, energy-saving and consumption-reducing, has the characteristics of heat insulation, water resistance, rust resistance, corrosion resistance, short construction period and quick effect, comprehensively replaces a water spraying system, heat-insulating cotton, foaming sponge, interlayer iron sheets and the like, is mainly three types of heat-insulating coatings classified by the characteristic principle, and has heat-insulating and conducting heat-insulating coatings, reflecting heat-insulating coatings and radiation heat-insulating coatings.
For example, chinese patent discloses a preparation method of a nano composite water-based heat-insulating coating, CN106336741B, wherein nano titanium dioxide is used as a reflective heat-insulating pigment, halloysite nanotubes are used as functional fillers, nano silicon dioxide is used as inorganic fillers, and nano composite water-based dispersion liquid is prepared by high-speed shearing and dispersing for a certain time; and then adding components such as styrene-acrylic resin, hydroxyethyl cellulose, polyvinyl alcohol, a defoaming agent, a lubricant, a water repellent, an antibacterial agent, a dilute NaOH solution, deionized water and the like according to a specific program, and performing high-speed shearing dispersion, pH adjustment, screening and filtration to prepare the water-based heat-insulating coating. The preparation condition of the water-based heat-insulating coating is mild, no new equipment is needed, the process is simple, and the production cost is low; the invention takes water as a dispersion medium, which accords with the concept of green design; meanwhile, the nano material and the hollow material are selected as pigments, so that the heat insulation performance and the weather resistance of the paint are improved comprehensively.
Although the scheme has the advantages, the traditional granary coating preparation method cannot provide enough waterproof and heat-insulating performance, so that the interior of the granary is influenced by the outside temperature and humidity; meanwhile, when the water-based nano waterproof thermal insulation coating is used for a long time, due to the change of temperature and humidity, the problems of falling and cracking are easy to occur, the service life and the protection effect are influenced, the effect of the coating of the granary is poor in the aspects of protecting grains and maintaining the granary structure, grains are affected with damp, spoil and mildew, meanwhile, the maintenance and repair cost and the workload of the granary are increased, the service life and the economic benefit of the granary are reduced, and therefore, a preparation method of the water-based nano waterproof thermal insulation coating special for the granary is needed to solve the problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a preparation method of a water-based nano waterproof heat-insulating coating special for a granary, which solves the problems that the traditional preparation method of the granary coating in the prior art can not provide enough waterproof heat-insulating performance, and the interior of the granary is influenced by the external temperature and humidity; meanwhile, when the water purifier is used for a long time, the water purifier is easy to fall off and crack due to the change of temperature and humidity.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
The invention provides a preparation method of a special water-based nano waterproof heat-insulating coating for a granary, which comprises the following steps:
Step 1, preparing materials, which comprises a water-based polymer base material and a nano material mixture, wherein the water-based polymer base material comprises polymer emulsion, a solvent, an auxiliary agent and a functional agent, and the raw material comprises the following components in percentage by weight: the polymer emulsion accounts for 63% -75% of the total components, the solvent accounts for 8% -23% of the total components, the auxiliary agent accounts for 7% -12% of the total components, the nano material mixture accounts for 1% -5% of the total components, the auxiliary agent accounts for 1.5% -2.5% of the water-based polymer base material components, and the functional agent accounts for 0.5% -1% of the total components;
Step 2, preparing a nano material mixture, namely preparing zinc oxide and silicon dioxide nano particles by using a high-energy ball mill: mixing zinc oxide nano particles and silicon dioxide nano particles according to the proportion of 3:4, and adding the mixture into a ball mill; the ball milling time is controlled to be 5-8 hours, and the rotating speed is 350-500 rpm; adding polyvinylpyrrolidone accounting for 0.1% -0.8% of the total weight of the nano material mixture in the ball milling process, then using ultrasonic treatment equipment to further disperse nano particles, setting the ultrasonic power to be 180-200W, and the treatment time to be 20-30 minutes to obtain the nano material mixture;
Step 3, reinforcing the aqueous polymer base material, adding a mildew-resistant preservative and a weather-resistant reinforcing agent into the aqueous polymer base material, wherein the addition amount of the mildew-resistant preservative is 1% -5% of the total composition of the aqueous polymer base material, and the addition amount of the weather-resistant reinforcing agent is 0.5% -2% of the total composition of the aqueous polymer base material;
Step 4, coating processing, namely gradually adding the prepared nano material mixture into the water-based polymer base material by using a high-shear stirrer, wherein the stirring speed is set to 800-1000 rpm, and the stirring time is controlled to 35-45 minutes; the processing temperature is 20-25 ℃, and the humidity is 30-40% RH; then using a high-speed dispersing machine to carry out secondary dispersing treatment on the coating, setting the dispersing speed to 1800-3000 r/min and the dispersing time to 8-10 min, and fully mixing the nano material mixture with the base material to obtain a coating mixture;
Step 5, introducing a functional additive, adding 0.3% -0.5% of an organosilicon modifier into the paint base material, and mixing at the temperature of 20-25 ℃ for 950-1850 r/min by a high-shear mixer, wherein the mixing time is 10-15 min; adding 0.2% -0.3% of silver ion antibacterial agent into the paint base material, mixing by a high-shear mixer, and mixing at 20-25 ℃ for 850-1650 rpm by the high-shear mixer, wherein the mixing time is 10-15 minutes.
The invention is further arranged to: the nano material mixture is prepared from zinc oxide and silicon dioxide nano particles and is used for improving the heat insulation and antibacterial performance of the coating;
the invention is further arranged to: the auxiliary agent comprises an antimold preservative and a weather resistance enhancer, and is used for enhancing the antibacterial and weather resistance properties of the coating;
The auxiliary agent comprises a dispersing agent, a thickening agent and a stabilizing agent;
The invention is further arranged to: in the step 1, the polymer emulsion is selected from acrylic emulsion and acrylic ester emulsion water-based polymers, so that the adhesiveness and weather resistance of the coating are ensured;
The polymer emulsion with the particle size of 100-500nm is obtained by adopting the reaction polymerization and emulsion polymerization processes, and simultaneously, the cross-linking agent is added to improve the weather resistance and the adhesive force of the polymer emulsion;
the invention is further arranged to: in the step 1, the cross-linking agent is selected from isocyanate cross-linking agent and epoxy cross-linking agent, and the addition amount of the cross-linking agent accounts for 1% -5% of the total components;
The invention is further arranged to: in the step 1, the solvent is a mixed solvent of water and alcohol, and the ratio of the water to the alcohol solvent is 2:3;
the solvent is prepared by adopting a special purification process, so that the purity and stability of the solvent are ensured;
the invention is further arranged to: in the step 1, the solvent preparation mode comprises impurity removal and mixing of an aqueous solvent and an alcohol solvent;
aiming at the water solvent, the special purification process comprises reverse osmosis membrane filtration and ion exchange resin treatment, and impurities and ions in the water are removed;
Aiming at alcohol solvents, special purification processes comprise fractional distillation, distillation and freezing crystallization, so that the content of impurities is reduced;
then uniformly mixing the water solvent and the alcohol solvent to obtain a solvent;
The invention is further arranged to: the alcohol solvent component comprises glycerin and at least one of isopropanol, propylene glycol, butanediol and butanol;
The invention is further arranged to: the mildew-resistant preservative is selected from chlorinated phenol, benzoic acid and boric acid;
the invention is further arranged to: the weather resistance enhancer is titanium dioxide and zinc oxide.
Compared with the prior art, the invention has the following beneficial effects:
According to the preparation method of the special water-based nano waterproof thermal-insulation coating for the granary, the preparation process of the nano material mixture is adopted, the preparation of zinc oxide and silicon dioxide nano particles is carried out through a high-energy ball mill, polyvinylpyrrolidone is introduced, nano particles are further dispersed through ultrasonic treatment equipment, the dispersibility and stability of the nano particles are effectively improved, the coating performance is improved, secondly, the water-based polymer base material is reinforced, the mildew-resistant preservative and the weather-resistant reinforcing agent are added, the antibacterial mildew-resistant and weather-resistant performances of the coating are improved, in the coating processing process, the high-shear mixer and the high-speed dispersing machine are adopted for mixing and dispersing treatment, the adequate mixing of the nano material mixture and the base material is ensured, the stable and consistent coating mixture is obtained, the functional additive comprising the organosilicon modifier and the silver ion antibacterial agent is introduced, the coating is effectively improved, meanwhile, the good antibacterial performance is ensured, and the cleaning and safety of the internal environment of the granary are ensured;
according to the application, the nano material mixture, zinc oxide and silicon dioxide nano particles are introduced, so that the heat insulation performance of the coating is effectively improved, the interior of a granary is protected from the influence of external environment, the durability and the corrosion resistance of the coating can be improved by adopting the aqueous polymer base material to strengthen and the functional additives of the mildew-resistant preservative and the weather resistance enhancer, the service life of the coating is prolonged, and in addition, the aqueous polymer base material and the environment-friendly solvent are adopted, the functional additives of the antibacterial agent are added, so that the environment-friendly performance of the coating is improved, and the pollution to the environment and the influence to the health of a human body are reduced; in conclusion, by the coating preparation method provided by the application, the waterproof and heat-insulating properties, durability and environmental protection properties of the coating are obviously improved, so that articles in the granary are better protected from the influence of external environment, and the protection effect and the service life of the granary are improved.
Drawings
FIG. 1 is a flow chart of a preparation method of the water-based nano waterproof heat-insulating coating special for the granary.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the attached drawing figures:
Examples
Referring to fig. 1, the invention provides a preparation method of a water-based nano waterproof heat-insulating coating special for a granary, which comprises the following steps: step 1, preparing materials, which comprises a water-based polymer base material and a nano material mixture, wherein the water-based polymer base material comprises polymer emulsion, a solvent, an auxiliary agent and a functional agent, and the raw material comprises the following components in percentage by weight: the polymer emulsion accounts for 65.6% of the total composition, the solvent accounts for 23% of the total composition, the auxiliary agent accounts for 8% of the total composition, the nano material mixture accounts for 3% of the total composition, the auxiliary agent accounts for 2% of the water-based polymer base material composition, and the functional agent accounts for 0.4% of the total composition;
step 2, preparing a nano material mixture, namely preparing zinc oxide and silicon dioxide nano particles by using a high-energy ball mill; mixing zinc oxide nano particles and silicon dioxide nano particles according to the proportion of 3:4, and adding the mixture into a ball mill; the ball milling time is controlled to be 8 hours, and the rotating speed is 500 rpm;
Adding polyvinylpyrrolidone accounting for 0.5% of the total weight of the nano material mixture in the ball milling process, improving the dispersibility and stability of nano particles, then using ultrasonic treatment equipment to further disperse the nano particles, setting the ultrasonic power to be 200W, and setting the treatment time to be 30 minutes to obtain the nano material mixture;
Step 3, reinforcing the aqueous polymer base material, adding a mildew-resistant preservative and a weather-resistant reinforcing agent into the aqueous polymer base material, and improving the antibacterial mildew-resistant and weather-resistant properties of the coating, wherein the addition amount of the mildew-resistant preservative is 1.5% of the total composition of the aqueous polymer base material, and the addition amount of the weather-resistant reinforcing agent is 0.5% of the total composition of the aqueous polymer base material;
Step 4, coating processing, namely gradually adding the prepared nano material mixture into the water-based polymer base material by using a high-shear mixer, setting the stirring speed to 1000 revolutions per minute, controlling the stirring time to 45 minutes, controlling the processing temperature to 20 ℃ and the humidity to 40% RH, ensuring the stability and consistency of the coating, then performing secondary dispersion treatment on the coating by using a high-speed dispersing machine, setting the dispersing speed to 3000 revolutions per minute, setting the dispersing time to 10 minutes, and fully mixing the nano material mixture with the base material to obtain a coating mixture;
Step 5, introducing a functional additive, adding 0.4% of an organosilicon modifier into a paint base material, mixing 1850 revolutions per minute at 25 ℃ by a high-shear mixer, and stirring for 15 minutes, thereby improving the weather resistance and corrosion resistance of the paint, wherein an acrylic emulsion is adopted as a polymer emulsion, and ensuring the adhesiveness and weather resistance of the paint; the polymer emulsion with the particle diameter of 500nm is obtained by adopting the reaction polymerization and emulsion polymerization processes, and simultaneously, the cross-linking agent is added to improve the weather resistance and the adhesive force of the polymer emulsion, and the cross-linking agent adopts isocyanate cross-linking agent, wherein the addition amount of the cross-linking agent is 3% of the total components; in the step 1, the solvent is a mixed solvent of water and alcohol, the ratio of the water to the alcohol solvent is 2:3, the environmental protection and the safety of the paint are improved, and the production cost is reduced; the solvent is prepared by adopting a special purification process, so that the purity and stability of the solvent are ensured; in the step 1, the solvent preparation mode comprises impurity removal and mixing of an aqueous solvent and an alcohol solvent; aiming at the water solvent, the special purification process comprises reverse osmosis membrane filtration and ion exchange resin treatment, and impurities and ions in the water are removed;
aiming at alcohol solvents, special purification processes comprise fractional distillation, distillation and freezing crystallization, so that the content of impurities is reduced; then uniformly mixing the water solvent and the alcohol solvent to obtain a solvent;
The alcohol solvent component is a mixture prepared by mixing glycerol and isopropanol in a ratio of 5:2;
The mildew-resistant preservative adopts chlorinated phenol;
The weather resistance enhancer adopts titanium dioxide;
Examples
Referring to fig. 1, the invention provides a preparation method of a water-based nano waterproof heat-insulating coating special for a granary, which comprises the following steps: step 1, preparing materials, which comprises a water-based polymer base material and a nano material mixture, wherein the water-based polymer base material comprises polymer emulsion, a solvent, an auxiliary agent and a functional agent, and the raw material comprises the following components in percentage by weight: the polymer emulsion accounts for 70% of the total composition, the solvent accounts for 20% of the total composition, the auxiliary agent accounts for 7% of the total composition, the nano material mixture accounts for 1% of the total composition, the auxiliary agent accounts for 1.5% of the water-based polymer base material composition, and the functional agent accounts for 0.5% of the total composition;
Step 2, preparing a nano material mixture, namely preparing zinc oxide and silicon dioxide nano particles by using a high-energy ball mill: mixing zinc oxide nano particles and silicon dioxide nano particles according to the proportion of 3:4, and adding the mixture into a ball mill; the ball milling time is controlled to be 5 hours, and the rotating speed is 500 rpm;
Adding polyvinylpyrrolidone accounting for 0.8% of the total weight of the nano material mixture in the ball milling process, then using ultrasonic treatment equipment to further disperse nano particles, setting the ultrasonic power to be 200W, and treating for 20 minutes to obtain the nano material mixture;
step 3, reinforcing the aqueous polymer base material, namely adding a weather resistance reinforcing agent into the aqueous polymer base material, wherein the addition amount of the weather resistance reinforcing agent is 1.5% of the total composition of the aqueous polymer base material;
Step 4, coating processing, namely gradually adding the prepared nano material mixture into the water-based polymer base material by using a high-shear mixer, setting the stirring speed to 1000 revolutions per minute, controlling the stirring time to 45 minutes, processing at 25 ℃ and humidity at 35% RH, then performing secondary dispersion treatment on the coating by using a high-speed dispersing machine, setting the dispersing speed to 3000 revolutions per minute and the dispersing time to 10 minutes, and fully mixing the nano material mixture with the base material to obtain a coating mixture;
Step 5, introducing a functional additive, namely adding 0.3% of an organosilicon modifier into the paint base material, mixing at 25 ℃ for 1000 revolutions per minute by a high-shear mixer for 15 minutes, adding 0.2 of a silver ion antibacterial agent into the paint base material, mixing by the high-shear mixer, and mixing at 25 ℃ for 1000 revolutions per minute by the high-shear mixer for 15 minutes;
In the step 1, the polymer emulsion adopts an acrylic ester emulsion water-based polymer; the polymer emulsion with the particle diameter of 500nm is obtained by adopting the reaction polymerization and emulsion polymerization processes, and simultaneously, the cross-linking agent is added to improve the weather resistance and the adhesive force of the polymer emulsion;
In the step 1, the cross-linking agent adopts isocyanate cross-linking agent, and the addition amount of the cross-linking agent accounts for 5% of the total components; in the step 1, the solvent is a mixed solvent of water and alcohol, and the ratio of the water to the alcohol solvent is 2:3;
The alcohol solvent comprises the following components: propylene glycol: butanol in a mass ratio of 5:2:1;
Boric acid is adopted as the mildew-resistant preservative;
The weather resistance enhancer adopts titanium dioxide;
Examples
Referring to fig. 1, the invention provides a preparation method of a water-based nano waterproof heat-insulating coating special for a granary, which comprises the following steps: step 1, preparing materials, which comprises a water-based polymer base material and a nano material mixture, wherein the water-based polymer base material comprises polymer emulsion, a solvent, an auxiliary agent and a functional agent, and the raw material comprises the following components in percentage by weight: 73% of the total composition, 12% of the solvent, 10% of the auxiliary agent, 2% of the nanomaterial mixture, 2.5% of the auxiliary agent, and 0.5% of the functional agent;
Step 2, preparing a nano material mixture, namely preparing zinc oxide and silicon dioxide nano particles by using a high-energy ball mill: mixing zinc oxide nano particles and silicon dioxide nano particles according to the proportion of 3:4, and adding the mixture into a ball mill; the grinding time is controlled to 7 hours, and the rotating speed is 400 rpm; adding polyvinylpyrrolidone accounting for 0.5% of the total weight of the nano material mixture in the ball milling process, then using ultrasonic treatment equipment to further disperse nano particles, setting the ultrasonic power to be 190W, and obtaining the nano material mixture after the treatment time is 25 minutes;
step 3, reinforcing the aqueous polymer base material, adding a mildew-resistant preservative and a weather-resistant reinforcing agent into the aqueous polymer base material, wherein the addition amount of the mildew-resistant preservative is 2% of the total composition of the aqueous polymer base material, and the addition amount of the weather-resistant reinforcing agent is 0.5% of the total composition of the aqueous polymer base material;
Step 4, coating processing, namely gradually adding the prepared nano material mixture into the water-based polymer base material by using a high-shear stirrer, wherein the stirring speed is set to 900 revolutions per minute, the stirring time is controlled to 45 minutes, the processing temperature is 25 ℃, and the humidity is 35% RH; secondly, performing secondary dispersion treatment on the coating by using a high-speed dispersing machine, wherein the dispersing speed is set to 2500 rpm, the dispersing time is set to 10 minutes, and fully mixing the nano material mixture with the base material to obtain a coating mixture;
step 5, introducing a functional additive, namely adding 0.3% of an organosilicon modifier into the paint base material, mixing at 25 ℃ for 1000 revolutions per minute by a high-shear mixer for 15 minutes, adding 0.2% of a silver ion antibacterial agent into the paint base material, mixing by the high-shear mixer, and mixing at 25 ℃ for 1000 revolutions per minute by the high-shear mixer for 15 minutes;
In the step 1, the polymer emulsion is prepared by adopting an acrylic ester emulsion water-based polymer and adopting a reaction polymerization and emulsion polymerization process, so that the polymer emulsion with the particle size of 450-500nm is obtained, and meanwhile, a cross-linking agent is added, so that the weather resistance and the adhesive force of the polymer emulsion are improved;
The cross-linking agent adopts an epoxy cross-linking agent, and the addition amount of the cross-linking agent accounts for 4.5% of the total components;
the solvent is a mixed solvent of water and alcohol, and the ratio of the water to the alcohol solvent is 2:3;
The alcohol solvent component is glycerol;
Boric acid is adopted as the mildew-resistant preservative;
The weather resistance enhancer is titanium dioxide.
Respectively preparing 50kg of coating according to the modes of examples 1, 2 and 3, respectively serving as an experiment 1 group, an experiment 2 group and an experiment 3 group, coating on the same type of granary wall surface, respectively performing a heat insulation performance test, an antibacterial performance test and an environmental protection performance test, preparing 50kg of coating according to the processing mode of CN106336741B, serving as a control group, and also coating on the same type of granary wall surface, and respectively performing a heat insulation performance test, an antibacterial performance test and an environmental protection performance test;
Thermal insulation performance test:
According to GB/T25261-2018 reflective heat insulation paint for buildings, performing heat insulation performance tests on an experiment 1 group, an experiment 2 group, an experiment 3 group and a control group, and measuring the temperature difference between the surface of the coating and the inner surface of a granary under the same temperature condition;
Table 1: performance test data
According to test data, the temperature difference between the surface of the coating and the inner surface of the granary of the coating prepared by the preparation method of the application is 8.5 ℃, 7.8 ℃ and 8.2 ℃ respectively, and the temperature difference between the coating used by the comparison group and the traditional coating is 5.3 ℃, which shows that the coating used by the experiment group has better heat insulation performance, can effectively reduce the temperature difference between the inner and outer surfaces of the granary, and improves the heat insulation effect of the inner part of the granary;
Antibacterial performance test:
using a GB/T21866-2008 antibacterial coating (paint film) antibacterial property measuring method and antibacterial effect, performing antibacterial property tests on an experiment 1 group, an experiment 2 group, an experiment 3 group and a control group;
According to test data, the antibacterial effects of the coatings prepared by the preparation method of the application in the experimental group 1, the experimental group 2 and the experimental group 3 are 89.2%, 88.6% and 89.0%, respectively, and the antibacterial effect of the coatings in the control group is 77.5% when the traditional coatings are used, which shows that the coatings used in the experimental group have better antibacterial performance, can effectively inhibit bacterial growth and keep the sanitary environment in the granary;
And (3) testing environmental protection performance:
Using technical requirements of GB/T38597-2020 low-volatile organic compound content coating products to test environmental protection performance of an experiment 1 group, an experiment 2 group, an experiment 3 group and a control group;
According to the test data, the volatile organic compound contents of the coatings prepared by the preparation method of the application in the experimental group 1, the experimental group 2 and the experimental group 3 are respectively 8.2g/L, 7.6g/L and 8.0g/L, and the volatile organic compound content of the coatings prepared by the traditional coating in the control group is 15.4g/L, which indicates that the coatings used by the experimental group have lower volatile organic compound contents, thereby being beneficial to reducing the pollution to the environment.
According to the preparation method of the special water-based nano waterproof thermal-insulation coating for the granary, the preparation process of the nano material mixture is adopted, the preparation of zinc oxide and silicon dioxide nano particles is carried out through a high-energy ball mill, polyvinylpyrrolidone is introduced, nano particles are further dispersed through ultrasonic treatment equipment, the dispersibility and stability of the nano particles are effectively improved, the coating performance is improved, secondly, the water-based polymer base material is reinforced, the mildew-resistant preservative and the weather-resistant reinforcing agent are added, the antibacterial mildew-resistant and weather-resistant performances of the coating are improved, in the coating processing process, the high-shear mixer and the high-speed dispersing machine are adopted for mixing and dispersing treatment, the adequate mixing of the nano material mixture and the base material is ensured, the stable and consistent coating mixture is obtained, the functional additive comprising the organosilicon modifier and the silver ion antibacterial agent is introduced, the coating is effectively improved, meanwhile, the good antibacterial performance is ensured, and the cleaning and safety of the internal environment of the granary are ensured;
according to the application, the nano material mixture, zinc oxide and silicon dioxide nano particles are introduced, so that the heat insulation performance of the coating is effectively improved, the interior of a granary is protected from the influence of external environment, the durability and the corrosion resistance of the coating can be improved by adopting the aqueous polymer base material to strengthen and the functional additives of the mildew-resistant preservative and the weather resistance enhancer, the service life of the coating is prolonged, and in addition, the aqueous polymer base material and the environment-friendly solvent are adopted, the functional additives of the antibacterial agent are added, so that the environment-friendly performance of the coating is improved, and the pollution to the environment and the influence to the health of a human body are reduced; in conclusion, by the coating preparation method provided by the application, the waterproof and heat-insulating properties, durability and environmental protection properties of the coating are obviously improved, so that articles in the granary are better protected from the influence of external environment, and the protection effect and the service life of the granary are improved.
The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. The preparation method of the water-based nano waterproof heat-insulating coating special for the granary is characterized by comprising the following steps of:
Step 1, preparing materials, which comprises a water-based polymer base material and a nano material mixture, wherein the water-based polymer base material comprises polymer emulsion, a solvent, an auxiliary agent and a functional agent, and the raw material comprises the following components in percentage by weight: the polymer emulsion accounts for 63% -75% of the total components, the solvent accounts for 8% -23% of the total components, the auxiliary agent accounts for 7% -12% of the total components, the nano material mixture accounts for 1% -5% of the total components, the auxiliary agent accounts for 1.5% -2.5% of the water-based polymer base material components, and the functional agent accounts for 0.5% -1% of the total components;
Step 2, preparing a nano material mixture, namely preparing zinc oxide and silicon dioxide nano particles by using a high-energy ball mill: mixing zinc oxide nano particles and silicon dioxide nano particles according to the proportion of 3:4, and adding the mixture into a ball mill; the ball milling time is controlled to be 5-8 hours, and the rotating speed is 350-500 rpm; adding polyvinylpyrrolidone accounting for 0.1% -0.8% of the total weight of the nano material mixture in the ball milling process, then using ultrasonic treatment equipment to further disperse nano particles, setting the ultrasonic power to be 180-200W, and the treatment time to be 20-30 minutes to obtain the nano material mixture;
Step 3, reinforcing the aqueous polymer base material, adding a mildew-resistant preservative and a weather-resistant reinforcing agent into the aqueous polymer base material, wherein the addition amount of the mildew-resistant preservative is 1% -5% of the total composition of the aqueous polymer base material, and the addition amount of the weather-resistant reinforcing agent is 0.5% -2% of the total composition of the aqueous polymer base material;
Step 4, coating processing, namely gradually adding the prepared nano material mixture into the water-based polymer base material by using a high-shear stirrer, wherein the stirring speed is set to 800-1000 rpm, and the stirring time is controlled to 35-45 minutes; the processing temperature is 20-25 ℃, and the humidity is 30-40% RH; then using a high-speed dispersing machine to carry out secondary dispersing treatment on the coating, setting the dispersing speed to 1800-3000 r/min and the dispersing time to 8-10 min, and fully mixing the nano material mixture with the base material to obtain a coating mixture;
Step 5, introducing a functional additive, adding 0.3% -0.5% of an organosilicon modifier into the paint base material, and mixing at the temperature of 20-25 ℃ for 950-1850 r/min by a high-shear mixer, wherein the mixing time is 10-15 min; adding 0.2% -0.3% of silver ion antibacterial agent into the paint base material, mixing by a high-shear mixer, and mixing at 20-25 ℃ for 850-1650 rpm by the high-shear mixer, wherein the mixing time is 10-15 minutes.
2. The method for preparing the water-based nano waterproof heat-insulating coating special for the granary, which is disclosed in claim 1, is characterized in that the nano material mixture is prepared from zinc oxide and silicon dioxide nano particles and is used for improving the heat insulation and antibacterial performance of the coating.
3. The preparation method of the water-based nano waterproof heat-insulating coating special for the granary, which is disclosed in claim 2, wherein the auxiliary agent comprises an antimold preservative and a weather resistance enhancer, and is used for enhancing the antibacterial and weather resistance properties of the coating;
The auxiliary agent comprises a dispersing agent, a thickening agent and a stabilizing agent.
4. The preparation method of the water-based nano waterproof heat-insulating coating special for the granary, according to claim 3, is characterized in that in the step 1, the polymer emulsion is selected from acrylic emulsion and acrylic ester emulsion water-based polymers, so that the adhesion and weather resistance of the coating are ensured;
the polymer emulsion with the particle size of 100-500nm is prepared by adopting reaction polymerization and emulsion polymerization processes, and simultaneously, the cross-linking agent is added to improve the weather resistance and the adhesive force of the polymer emulsion.
5. The preparation method of the water-based nano waterproof heat-insulating coating special for the granary, which is disclosed in claim 4, is characterized in that in the step 1, the cross-linking agent is selected from isocyanate cross-linking agent and epoxy cross-linking agent, and the addition amount of the cross-linking agent accounts for 1% -5% of the total components.
6. The preparation method of the water-based nano waterproof heat-insulating coating special for the granary, which is characterized in that in the step 1, the solvent is a mixed solvent of water and alcohol, and the ratio of the water to the alcohol solvent is 2:3;
The solvent is prepared by adopting a special purification process, so that the purity and stability of the solvent are ensured.
7. The method for preparing the water-based nano waterproof heat-insulating coating special for the granary, which is characterized in that in the step 1, the solvent preparation mode comprises the steps of removing impurities and mixing of a water solvent and an alcohol solvent;
aiming at the water solvent, the special purification process comprises reverse osmosis membrane filtration and ion exchange resin treatment, and impurities and ions in the water are removed;
Aiming at alcohol solvents, special purification processes comprise fractional distillation, distillation and freezing crystallization, so that the content of impurities is reduced;
and then uniformly mixing the aqueous solvent and the alcohol solvent to obtain the solvent.
8. The method for preparing the water-based nano waterproof thermal insulation coating special for the granary, which is disclosed in claim 7, is characterized in that the alcohol solvent component comprises glycerol and at least one of isopropanol, propylene glycol, butanediol and butanol.
9. The preparation method of the water-based nano waterproof heat-insulating coating special for the granary, which is disclosed in claim 8, is characterized in that the mildew-resistant preservative is selected from chlorinated phenol, benzoic acid and boric acid.
10. The preparation method of the water-based nano waterproof heat-insulating coating special for the granary, which is disclosed in claim 9, is characterized in that the weather resistance enhancer is selected from titanium dioxide and zinc oxide.
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| WO2022124998A1 (en) * | 2020-12-11 | 2022-06-16 | National University Of Singapore | A composite powder material |
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| CN1380369A (en) * | 2002-05-16 | 2002-11-20 | 复旦大学 | Water high-weatherability nano external wall paint and its preparation method |
| CN1696219A (en) * | 2004-05-11 | 2005-11-16 | 张海波 | Environmental protection type Nano Coating |
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