CN110564257A - Durable self-repairing building coating and preparation method thereof - Google Patents
Durable self-repairing building coating and preparation method thereof Download PDFInfo
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- CN110564257A CN110564257A CN201910922536.1A CN201910922536A CN110564257A CN 110564257 A CN110564257 A CN 110564257A CN 201910922536 A CN201910922536 A CN 201910922536A CN 110564257 A CN110564257 A CN 110564257A
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- 238000000576 coating method Methods 0.000 title claims abstract description 88
- 239000011248 coating agent Substances 0.000 title claims abstract description 78
- 238000002360 preparation method Methods 0.000 title claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 238000000855 fermentation Methods 0.000 claims abstract description 63
- 230000004151 fermentation Effects 0.000 claims abstract description 63
- 239000003094 microcapsule Substances 0.000 claims abstract description 49
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 48
- 238000003756 stirring Methods 0.000 claims abstract description 44
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 36
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000000203 mixture Substances 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 239000000839 emulsion Substances 0.000 claims abstract description 25
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 24
- 239000003999 initiator Substances 0.000 claims abstract description 20
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims abstract description 20
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 19
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 19
- 241000193830 Bacillus <bacterium> Species 0.000 claims abstract description 19
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims abstract description 19
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims abstract description 19
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims abstract description 19
- JLPULHDHAOZNQI-ZTIMHPMXSA-N 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCCCCCC\C=C/C\C=C/CCCCC JLPULHDHAOZNQI-ZTIMHPMXSA-N 0.000 claims abstract description 18
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 239000008367 deionised water Substances 0.000 claims abstract description 18
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 18
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims abstract description 18
- 229920000053 polysorbate 80 Polymers 0.000 claims abstract description 18
- 239000002002 slurry Substances 0.000 claims abstract description 18
- 229940083466 soybean lecithin Drugs 0.000 claims abstract description 18
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 18
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 15
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 12
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 45
- 239000000243 solution Substances 0.000 claims description 35
- 239000007864 aqueous solution Substances 0.000 claims description 26
- 238000001914 filtration Methods 0.000 claims description 25
- 238000002156 mixing Methods 0.000 claims description 25
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 22
- 238000001035 drying Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000006116 polymerization reaction Methods 0.000 claims description 17
- 238000005406 washing Methods 0.000 claims description 17
- 239000004640 Melamine resin Substances 0.000 claims description 15
- 239000000377 silicon dioxide Substances 0.000 claims description 13
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 11
- 230000002745 absorbent Effects 0.000 claims description 10
- 239000002250 absorbent Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 238000007865 diluting Methods 0.000 claims description 8
- 239000008098 formaldehyde solution Substances 0.000 claims description 8
- 238000007873 sieving Methods 0.000 claims description 8
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 claims description 7
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical group C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 7
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 6
- 238000004945 emulsification Methods 0.000 claims description 5
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 4
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920001568 phenolic resin Polymers 0.000 claims description 4
- 239000005011 phenolic resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- 229920000178 Acrylic resin Polymers 0.000 claims description 3
- 229920001225 polyester resin Polymers 0.000 claims description 3
- 239000004645 polyester resin Substances 0.000 claims description 3
- 229920005749 polyurethane resin Polymers 0.000 claims description 3
- 238000009210 therapy by ultrasound Methods 0.000 claims description 2
- 239000004971 Cross linker Substances 0.000 claims 1
- 230000035484 reaction time Effects 0.000 claims 1
- 229920001577 copolymer Polymers 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 8
- 239000013078 crystal Substances 0.000 abstract description 5
- 238000011049 filling Methods 0.000 abstract description 3
- 230000002401 inhibitory effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 8
- 239000002131 composite material Substances 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000001804 emulsifying effect Effects 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000010425 asbestos Substances 0.000 description 4
- -1 ethyl orthosilicate cyclohexane Chemical compound 0.000 description 4
- 239000003112 inhibitor Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 229910052895 riebeckite Inorganic materials 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 239000002775 capsule Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000012620 biological material Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 210000004666 bacterial spore Anatomy 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- YTPUURACXFYQOV-UHFFFAOYSA-N decane furan-2,5-dione Chemical compound C1(C=C/C(=O)O1)=O.CCCCCCCCCC YTPUURACXFYQOV-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical compound O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal 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
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000004092 self-diagnosis Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000012745 toughening agent Substances 0.000 description 1
- 239000008096 xylene 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
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- 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
-
- 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
- C09D7/65—Additives macromolecular
-
- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
the invention provides a durable self-repairing building coating which is prepared by stirring a microcapsule product, fermentation filter residues, water-based resin, alumina slurry, titanium dioxide, nano silicon dioxide, soybean lecithin and deionized water; the microcapsule product is prepared by performing graft reaction on hydroxyethyl cellulose, acrylic acid, an initiator and a cross-linking agent, crushing the mixture to prepare a particle size product, and then adding melamine, formaldehyde, triethanolamine, tween 80 and water into emulsion obtained by taking the raw materials as raw materials to react; the fermentation filter residue is prepared by sealing and fermenting calcium carbonate and bacillus liquid. The coating provided by the invention contains microcapsule products with self-repairing function and fermentation filter residues, and can absorb water to promote the expansion of the copolymer in the microcapsule and form calcium carbonate crystals after the coating is damaged, so that the effect of filling cracks is achieved, meanwhile, the fermentation filter residues endow the coating with the capability of inhibiting the crack expansion of the coating, and the obtained coating has the effect of durable self-repairing.
Description
Technical Field
The invention relates to the technical field of building coatings, in particular to a durable self-repairing building coating and a preparation method thereof.
background
the coating is used as a polymer-based composite material and is widely applied to a plurality of fields such as buildings, aerospace, traffic, electronics, sports, military supplies and the like due to the advantages of light weight, high strength, excellent mechanical property, good corrosion resistance, good electrical property and the like. However, polymer-based composites have one major drawback: such composites are susceptible to damage from impact during processing and use. In addition to material failure from intense impact, more common is material micro-damage (microcracks), which is often difficult to detect visually. At this point, the material surface may not see any abnormalities, but the strength of the material has been greatly reduced. The microcracks cause the mechanical strength of the composite material to be reduced, and once the microcracks are generated in the polymer material, the integrity of the material is seriously damaged, even the integral damage of the material is caused.
because the coating is generally made of composite fibers, polymer solution, stone powder, a thickening agent and other materials, the coating is directly exposed to the sun, and the phenomena of drying crack and peeling appear after long-term use, so that the appearance of the building outer wall is influenced, the coating is exposed to the sun for a long time to form cracks, cracks are formed, the cracks continuously extend, the wall structure is unstable, and the wall collapses in severe cases.
researches show that the organism has a self-healing function after being damaged, and if the self-healing function of the biomaterial can be reproduced on the composite material, the biomaterial has high application value. With the inspiration, scientists establish a self-repairing model of the material, so that damages to the material, particularly the damages which cannot be detected inside the material can be repaired to a certain degree without using an additional repairing material, and the self-repairing model has important significance for maintaining the mechanical strength of the material, eliminating hidden dangers and prolonging the service life. The concept of intelligent material with self-diagnosis and self-repair functions is provided by the U.S. military in the middle of the 80 th century, and is rapidly becoming the focus of research in various countries. The self-repairing technology is applied to the field of coatings, namely the self-repairing coatings are generated.
the self-repairing coating is a coating with a self-repairing function after a coating is damaged or a coating with a self-repairing function under certain conditions. In recent years, the coating technology is closely linked with the development of material science, various functional coatings are continuously developed along with the continuous progress of the material science, and under the background, the self-repairing coating is rapidly developed in theoretical research and practical application. The self-repairing coating can be roughly divided into 3 types according to different repairing mechanisms: a repair agent-releasing self-healing coating; reversible chemical/physical reaction self-healing coatings and other types.
chinese invention patent application No. 201610753294.4 discloses a waterproof coating for buildings, which comprises the following raw materials in parts by weight: 21-32 parts of epoxy resin, 1-5 parts of polyamide resin, 2-4 parts of butylated amino resin, 5-9 parts of ABS resin, 2-3 parts of phenolic resin, 15-23 parts of Portland cement, 8-15 parts of asphalt, 2-7 parts of ethyl acetate, 16-26 parts of xylene, 11-16 parts of bentonite, 2-5 parts of nano titanium dioxide, 1-2 parts of toughening agent, 2-4 parts of defoaming agent, 7-10 parts of flatting agent and 5-9 parts of drier. Chinese patent application No. 201811480065.5 discloses a microcapsule self-repairing anticorrosive coating and a preparation method thereof. The coating is composed of silicon dioxide microcapsules with built-in corrosion inhibitors in silicon-based emulsion; the method comprises the steps of mixing an ethyl orthosilicate cyclohexane solution and a corrosion inhibitor, adjusting the pH value of the mixture by using acid, stirring for reaction, filtering reaction liquid, adding a sodium dodecyl benzene sulfonate aqueous solution into the obtained organic-inorganic hybrid emulsion, stirring, sequentially carrying out solid-liquid separation, washing and drying on the obtained water-in-oil type core material emulsion to obtain a silicon dioxide microcapsule coated with the corrosion inhibitor, adding a metal platinum catalyst into silicon oil, stirring to obtain a silicon-based emulsion, mixing the silicon dioxide microcapsule coated with the corrosion inhibitor and the silicon-based emulsion, adding maleic anhydride monodecane into the mixture, and stirring for reaction to obtain the target product.
In order to solve the problems of cracking, falling off and the like of a coating layer of a common architectural coating under the influence of external environments such as sunlight and the like for a long time, a novel architectural coating needs to be provided, so that the self-repairing property of the coating is effectively realized, and the durability of the coating is improved.
Disclosure of Invention
Aiming at the problem that the coating is easy to crack and fall off when the conventional building coating is in the sun for a long time, the invention provides a durable self-repairing building coating of the building coating, so that the durable self-repairing effect of the coating is effectively realized.
in order to solve the problems, the invention adopts the following technical scheme:
A durable self-repairing building coating is prepared by stirring a microcapsule product, fermentation filter residues, water-based resin, alumina slurry, titanium dioxide, nano silicon dioxide, soybean lecithin and deionized water; the microcapsule product is prepared by performing graft reaction on hydroxyethyl cellulose, acrylic acid, an initiator and a cross-linking agent, crushing the mixture to prepare a particle size product, and then adding melamine, formaldehyde, triethanolamine, tween 80 and water into emulsion obtained by taking the raw materials as raw materials to react; the fermentation filter residue is prepared by sealing and fermenting calcium carbonate and bacillus liquid. The preparation method comprises the following steps:
(1) Putting hydroxyethyl cellulose into a container, adding a proper amount of 0.2mol/L NaOH solution, stirring in a water bath at 45 ℃ for 30min, slowly adding acrylic acid into the container, sequentially adding an initiator and a cross-linking agent, heating for reaction for a period of time, washing and filtering a product, drying in a drying oven at 60 ℃ to constant weight, crushing, and sieving with a 100-mesh sieve to obtain a particle-size product, namely the water absorbent;
(2) Uniformly mixing melamine and formaldehyde solution according to the mass ratio of 1:3, adjusting the pH value to 8-9 by using triethanolamine aqueous solution with the mass ratio of 20-25%, stirring and heating to 60 ℃, reacting until the melamine is completely dissolved, then diluting by using water with the same volume as the formaldehyde, continuously reacting for 10min to obtain aqueous solution of melamine resin prepolymer, keeping the temperature of the solution at 70 ℃, then dripping into water containing tween 80 for ultrasonic emulsification to obtain pre-polymerized emulsion, then adding a granularity product into the pre-polymerized emulsion, adjusting the pH value of the system to 4-5 by using hydrochloric acid solution, stirring and reacting, then cooling, filtering, washing and drying to obtain a microcapsule product;
(3) Mixing calcium carbonate and bacillus liquid, placing the mixture in a fermentation tank, sealing the fermentation tank for fermentation, and filtering the mixture after the fermentation is finished to obtain fermentation filter residues;
(4) Adding the microcapsule product, the fermentation filter residue, the water-based resin, the alumina slurry, the titanium dioxide, the nano-silica, the soybean lecithin and the deionized water into a stirrer, and uniformly mixing and stirring to obtain the durable self-repairing building coating.
Preferably, the aqueous resin is one or a combination of two or more of phenolic resin, acrylic resin, epoxy resin, polyester resin and polyurethane resin.
Preferably, the crosslinking agent is N, N-methylene bisacrylamide.
Preferably, the initiator is an azo initiator.
Further preferably, the azo initiator is one of azobisisobutyramidine hydrochloride, azobisisobutyrimidazoline hydrochloride and azobisisobutyronitrile formamide.
preferably, the temperature of the heating reaction in the step (1) is 45-50 ℃, and the reaction lasts for 1-3 h.
Preferably, in the step (1), during the preparation of the water absorbent, the mass ratio of the NaOH solution to the hydroxyethyl cellulose to the acrylic acid to the initiator to the cross-linking agent is 100:10-30:15-35:2-4: 1-3.
Preferably, in the preparation of the emulsion in the step (2), the mass ratio of the water, the tween 80 and the aqueous solution of the melamine resin prepolymer is 100:1-4: 40-55.
Preferably, the ultrasonic frequency of the ultrasonic emulsification in the step (2) is 40-60kHz, and the ultrasonic treatment is 30-40 min.
preferably, in the preparation of the microcapsule product in the step (2), the mass ratio of the particle size product to the pre-polymerization liquid is 1: 2.
Preferably, the stirring speed of the stirring reaction in the step (2) is 450rpm, and the stirring is carried out for 2.5 h.
Preferably, in the preparation of the fermentation filter residue in the step (3), the mass ratio of the calcium carbonate to the bacillus liquid is 3: 1.
Preferably, the temperature of the sealed fermentation in the step (3) is 35-45 ℃, and the fermentation time is 1 week.
Preferably, in the step (4), in the preparation of the coating, the mass ratio of the microcapsule product, the fermentation filter residue, the water-based resin, the alumina slurry, the titanium dioxide, the nano-silica, the soybean lecithin and the deionized water is 5-10:5-8:20-30:5-10:3-55:3-5:1-3: 40-60.
It is known that polymer coatings are constantly affected by external forces, and the internal structure and properties of the polymer coatings are easily changed, so that microcracks occur to different degrees. The micro-cracks inside the coating are continuously generated and gathered, finally, the macroscopic cracking and breakage are caused, so that the mechanical property of the coating is greatly damaged, and the micro-cracks generated inside are difficult to repair from the outside through the prior art. Therefore, self-repairing coatings which are automatically detected, identified and repaired inside are produced. Among them, the self-repairing coating filled with microcapsules of external-aid type becomes the focus and hot spot of the present research.
The invention firstly uses acrylic acid and hydroxyethyl cellulose as raw materials, adds initiator and cross-linking agent under alkaline condition to obtain polymer product which is used as core material of microcapsule and is a water absorbent with higher water absorption capacity.
Further, the invention takes melamine, triethanolamine and formaldehyde as raw materials, and takes melamine-formaldehyde prepolymer as the capsule wall material of the microcapsule to prepare the microcapsule product with the self-repairing function as an important component of the self-repairing coating.
the microcapsule product obtained by the process has high water absorption capacity, when the coating is damaged, the microcapsule is broken, and the copolymer in the capsule can quickly absorb the water in the air to expand and block the crack.
Furthermore, the calcium carbonate and the bacillus liquid are mixed and then are sealed and fermented to obtain fermentation filter residues, water enters the fermentation filter residues through the water absorption capacity of the microcapsules, bacterial spores are activated, calcium carbonate crystals are promoted to continuously grow, crack expansion of the coating is inhibited, and the effect of durability self-repairing is achieved.
The invention provides a durable self-repairing building coating and a preparation method thereof, a certain amount of hydroxyethyl cellulose is weighed and put into a container, a proper amount of NaOH solution is added, the container is placed into a water bath for stirring, acrylic acid is slowly added into the container, and then an initiator and a cross-linking agent are sequentially added; after heating and reacting for a period of time, washing and filtering the product, putting the product into an oven to be dried to constant weight, crushing and sieving the product to obtain a granularity product; mixing melamine with a formaldehyde solution, stirring and heating to react the mixture until the melamine is completely dissolved by using a triethanolamine aqueous solution, diluting the mixture by using water with the same volume as the formaldehyde, and continuously reacting to obtain an aqueous solution of a melamine resin prepolymer; maintaining the temperature of the solution, dripping the solution into water containing Tween 80, performing ultrasonic emulsification, adding a particle size product into the emulsion, adjusting the pH value with a hydrochloric acid solution for reaction, cooling, filtering, washing and drying to obtain a microcapsule product; mixing calcium carbonate and bacillus liquid, placing the mixture in a fermentation tank, sealing and fermenting, and filtering after fermentation to obtain fermentation filter residues; uniformly stirring the microcapsule product, the fermentation filter residue, the water-based resin, the alumina slurry, the titanium dioxide, the nano-silica, the soybean lecithin and the deionized water in a stirrer to prepare the durable self-repairing building coating. The coating provided by the invention contains microcapsule products with self-repairing function and fermentation filter residues, and can absorb water to promote the expansion of the copolymer in the microcapsule and form calcium carbonate crystals after the coating is damaged, so that the effect of filling cracks is achieved, meanwhile, the fermentation filter residues endow the coating with the capability of inhibiting the crack expansion of the coating, and the obtained coating has the effect of durable self-repairing.
compared with the prior art, the durable self-repairing building coating provided by the invention has the outstanding characteristics and excellent effects that:
1. The microcapsule product with the self-repairing function in the building coating has strong water absorption capacity, the microcapsule can be broken after a coating is damaged, the copolymer in the capsule can quickly absorb water to expand to block cracks, and simultaneously, calcium carbonate crystals can be formed to play a role in filling the cracks.
2. the fermentation filter residue in the self-repairing coating disclosed by the invention enables calcium carbonate crystals to continuously grow, and has the capability of inhibiting the crack expansion of the coating, so that the coating achieves the effect of durable self-repairing.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but it should not be construed that the scope of the present invention is limited to the following examples. Various substitutions and alterations can be made by those skilled in the art and by conventional means without departing from the spirit of the method of the invention described above.
Example 1
(1) Putting hydroxyethyl cellulose into a container, adding a proper amount of 0.2mol/L NaOH solution, stirring in a water bath at 45 ℃ for 30min, slowly adding acrylic acid into the container, sequentially adding N, N-methylene bisacrylamide and azodiisobutyl amidine hydrochloride, heating to 48 ℃ for reaction for 2h, washing and filtering a product, drying in a 60 ℃ oven to constant weight to obtain a crude grafted copolymer, crushing the copolymer, and sieving with a 100-mesh sieve to obtain a particle size product, namely the water absorbent; wherein the mass ratio of the NaOH solution to the hydroxyethyl cellulose to the acrylic acid to the initiator to the cross-linking agent is 100:20:25:3: 2;
(2) Uniformly mixing melamine and formaldehyde solution according to the mass ratio of 1:3, adjusting the pH value to 8.5 by using 22% triethanolamine aqueous solution, stirring and heating to 60 ℃, reacting until the melamine is completely dissolved, then diluting with water with the volume of the formaldehyde, continuously reacting for 10min to obtain the aqueous solution of a melamine resin prepolymer, keeping the solution temperature at 70 ℃, then dripping into water containing Tween 80, ultrasonically emulsifying for 35min under the ultrasonic frequency of 50kHz to obtain pre-polymerization emulsion, then adding a granularity product into the pre-polymerization emulsion, wherein the mass ratio of the granularity product to the pre-polymerization solution is 1:2, adjusting the pH value of the system to 4.5 by using hydrochloric acid solution, stirring for 2.5h at the rotating speed of 450rpm, and then cooling, filtering, washing and drying to obtain a microcapsule product; wherein the mass ratio of the water to the aqueous solution of the tween 80 and the melamine resin prepolymer is 100:2: 48;
(3) Mixing calcium carbonate and bacillus liquid, placing the mixture in a fermentation tank, sealing and fermenting the mixture at the temperature of 40 ℃ for 1 week, and filtering the mixture after the fermentation is finished to obtain fermentation filter residues; wherein the mass ratio of calcium carbonate to bacillus liquid is 3: 1;
(4) Adding the microcapsule product, the fermentation filter residue, the phenolic resin, the alumina slurry, the titanium dioxide, the nano-silica, the soybean lecithin and the deionized water into a stirrer, and uniformly mixing and stirring to obtain the durable self-repairing building coating; wherein the mass ratio of the microcapsule product, the fermentation filter residue, the water-based resin, the alumina slurry, the titanium dioxide, the nano silicon dioxide, the soybean lecithin and the deionized water is 6:6:25:7:3:3:3: 47.
Example 2
(1) Putting hydroxyethyl cellulose into a container, adding a proper amount of 0.2mol/L NaOH solution, stirring in a water bath at 45 ℃ for 30min, slowly adding acrylic acid into the container, sequentially adding N, N-methylene bisacrylamide and azobisisobutyronitrile hydrochloride, heating to 45 ℃ for reaction for 3h, washing and filtering a product, drying in a 60 ℃ oven to constant weight to obtain a crude grafted copolymer, crushing the copolymer, and sieving with a 100-mesh sieve to obtain a particle size product, namely the water absorbent; wherein the mass ratio of the NaOH solution to the hydroxyethyl cellulose to the acrylic acid to the initiator to the cross-linking agent is 100:10:15:2: 1;
(2) Uniformly mixing melamine and formaldehyde solution according to the mass ratio of 1:3, adjusting the pH value to 8 by using triethanolamine aqueous solution with the mass ratio of 20%, stirring and heating to 60 ℃, reacting until the melamine is completely dissolved, then diluting by using water with the same volume as the formaldehyde, continuously reacting for 10min to obtain aqueous solution of melamine resin prepolymer, keeping the solution temperature at 70 ℃, then dripping into water containing tween 80, ultrasonically emulsifying for 40min under the ultrasonic frequency of 40kHz to obtain pre-polymerization emulsion, then adding a granularity product into the pre-polymerization emulsion, wherein the mass ratio of the granularity product to the pre-polymerization liquid is 1:2, adjusting the pH value of the system to 4 by using hydrochloric acid solution, stirring for 2.5h at the rotating speed of 450rpm, then cooling, filtering, washing and drying to obtain a microcapsule product; wherein the mass ratio of the water to the aqueous solution of the tween 80 and the melamine resin prepolymer is 100:1: 40;
(3) Mixing calcium carbonate and bacillus liquid, placing the mixture in a fermentation tank, sealing and fermenting the mixture at the temperature of 35 ℃ for 1 week, and filtering the mixture after the fermentation is finished to obtain fermentation filter residues; wherein the mass ratio of calcium carbonate to bacillus liquid is 3: 1;
(4) adding the microcapsule product, the fermentation filter residue, the acrylic resin, the alumina slurry, the titanium dioxide, the nano-silica, the soybean lecithin and the deionized water into a stirrer, and uniformly mixing and stirring to obtain the durable self-repairing building coating; wherein the mass ratio of the microcapsule product, the fermentation filter residue, the water-based resin, the alumina slurry, the titanium dioxide, the nano silicon dioxide, the soybean lecithin and the deionized water is 5:5:20:5:3:3:1: 60.
example 3
(1) Putting hydroxyethyl cellulose into a container, adding a proper amount of 0.2mol/L NaOH solution, stirring in a water bath at 45 ℃ for 30min, slowly adding acrylic acid into the container, sequentially adding N, N-methylene bisacrylamide and azo isobutyl cyano formamide, heating to 50 ℃ for reaction for 1h, washing and filtering a product, drying in a 60 ℃ oven to constant weight to obtain a crude grafted copolymer, crushing the copolymer, and sieving with a 100-mesh sieve to obtain a particle size product, namely the water absorbent; wherein the mass ratio of the NaOH solution to the hydroxyethyl cellulose to the acrylic acid to the initiator to the cross-linking agent is 100: 30: 35: 4: 3;
(2) uniformly mixing melamine and formaldehyde solution according to the mass ratio of 1:3, adjusting the pH value to 9 by using 25% triethanolamine aqueous solution, stirring and heating to 60 ℃, reacting until the melamine is completely dissolved, then diluting with water with the same volume as the formaldehyde, continuously reacting for 10min to obtain the aqueous solution of a melamine resin prepolymer, keeping the solution temperature at 70 ℃, then dripping into water containing tween 80, ultrasonically emulsifying at the ultrasonic frequency of 60kHz for 30min to obtain pre-polymerization emulsion, then adding a granularity product into the pre-polymerization emulsion, wherein the mass ratio of the granularity product to a pre-polymerization liquid is 1:2, adjusting the pH value of the system to 4-5 by using a hydrochloric acid solution, stirring at the rotating speed of 450rpm for 2.5h, and then cooling, filtering, washing and drying to obtain a microcapsule product; wherein the mass ratio of the water to the aqueous solution of the Tween 80 to the aqueous solution of the melamine resin prepolymer is 100: 4: 55;
(3) Mixing calcium carbonate and bacillus liquid, placing the mixture in a fermentation tank, sealing and fermenting the mixture at the temperature of 45 ℃ for 1 week, and filtering the mixture after the fermentation is finished to obtain fermentation filter residues; wherein the mass ratio of calcium carbonate to bacillus liquid is 3: 1;
(4) adding the microcapsule product, the fermentation filter residue, the epoxy resin, the alumina slurry, the titanium dioxide, the nano-silica, the soybean lecithin and the deionized water into a stirrer, and uniformly mixing and stirring to obtain the durable self-repairing building coating; wherein the mass ratio of the microcapsule product, the fermentation filter residue, the water-based resin, the alumina slurry, the titanium dioxide, the nano silicon dioxide, the soybean lecithin and the deionized water is 10: 8: 30: 10: 55: 5:3: 40.
Example 4
(1) Putting hydroxyethyl cellulose into a container, adding a proper amount of 0.2mol/L NaOH solution, stirring in a water bath at 45 ℃ for 30min, slowly adding acrylic acid into the container, sequentially adding N, N-methylene bisacrylamide and azodiisobutyramidine hydrochloride, heating to 47 ℃ for reaction for 2.5h, washing and filtering a product, drying in a 60 ℃ oven to constant weight to obtain a crude grafted copolymer, crushing the copolymer, and sieving with a 100-mesh sieve to obtain a particle size product, namely the water absorbent; wherein the mass ratio of the NaOH solution to the hydroxyethyl cellulose to the acrylic acid to the initiator to the cross-linking agent is 100:15:20:3: 1;
(2) Uniformly mixing melamine and formaldehyde solution according to the mass ratio of 1:3, adjusting the pH value to 8 by using 22% triethanolamine aqueous solution, stirring and heating to 60 ℃, reacting until the melamine is completely dissolved, then diluting with water with the same volume as the formaldehyde, continuously reacting for 10min to obtain the aqueous solution of a melamine resin prepolymer, keeping the solution temperature at 70 ℃, then dripping into water containing tween 80, ultrasonically emulsifying for 38min at the ultrasonic frequency of 45kHz to obtain pre-polymerization emulsion, then adding a granularity product into the pre-polymerization emulsion, wherein the mass ratio of the granularity product to a pre-polymerization liquid is 1:2, adjusting the pH value of the system to 4 by using a hydrochloric acid solution, stirring for 2.5h at the rotating speed of 450rpm, then cooling, filtering, washing and drying to obtain a microcapsule product; wherein the mass ratio of the water to the aqueous solution of the Tween 80 to the aqueous solution of the melamine resin prepolymer is 100:2: 45;
(3) Mixing calcium carbonate and bacillus liquid, placing the mixture in a fermentation tank, sealing and fermenting the mixture for 1 week at the temperature of 38 ℃, and filtering the mixture after the fermentation is finished to obtain fermentation filter residues; wherein the mass ratio of calcium carbonate to bacillus liquid is 3: 1;
(4) Adding the microcapsule product, the fermentation filter residue, the polyester resin, the alumina slurry, the titanium dioxide, the nano-silica, the soybean lecithin and the deionized water into a stirrer, and uniformly mixing and stirring to obtain the durable self-repairing building coating; wherein the mass ratio of the microcapsule product, the fermentation filter residue, the water-based resin, the alumina slurry, the titanium dioxide, the nano silicon dioxide, the soybean lecithin and the deionized water is 6:6:23:6:15:3.5:1.5: 55.
Example 5
(1) Putting hydroxyethyl cellulose into a container, adding a proper amount of 0.2mol/L NaOH solution, stirring in a water bath at 45 ℃ for 30min, slowly adding acrylic acid into the container, sequentially adding N, N-methylene bisacrylamide and azo isobutyl cyano formamide, heating to 48 ℃, reacting for 1.5h, washing and filtering a product, drying in a 60 ℃ oven to constant weight to obtain a crude grafted copolymer, crushing the copolymer, and sieving with a 100-mesh sieve to obtain a particle size product, namely the water absorbent; wherein the mass ratio of the NaOH solution to the hydroxyethyl cellulose to the acrylic acid to the initiator to the cross-linking agent is 100:25:35:3.5: 2.5;
(2) Uniformly mixing melamine and formaldehyde solution according to the mass ratio of 1:3, adjusting the pH value to 9 by using 24% triethanolamine aqueous solution, stirring and heating to 60 ℃, reacting until the melamine is completely dissolved, then diluting with water with the same volume as the formaldehyde, continuously reacting for 10min to obtain the aqueous solution of a melamine resin prepolymer, keeping the solution temperature at 70 ℃, then dripping into water containing tween 80, ultrasonically emulsifying at the ultrasonic frequency of 55kHz for 35min to obtain pre-polymerization emulsion, then adding a granularity product into the pre-polymerization emulsion, adjusting the pH value of the system to 5 by using hydrochloric acid solution with the mass ratio of the granularity product to the pre-polymerization liquid of 1:2, stirring at the rotating speed of 450rpm for 2.5h, then cooling, filtering, washing and drying to obtain a microcapsule product; wherein the mass ratio of the water to the aqueous solution of the tween 80 and the melamine resin prepolymer is 100:3: 50;
(3) Mixing calcium carbonate and bacillus liquid, placing the mixture in a fermentation tank, sealing and fermenting the mixture at the temperature of 42 ℃ for 1 week, and filtering the mixture after the fermentation is finished to obtain fermentation filter residues; wherein the mass ratio of calcium carbonate to bacillus liquid is 3: 1;
(4) adding the microcapsule product, the fermentation filter residue, the polyurethane resin, the alumina slurry, the titanium dioxide, the nano-silica, the soybean lecithin and the deionized water into a stirrer, and uniformly mixing and stirring to obtain the durable self-repairing building coating; wherein the mass ratio of the microcapsule product, the fermentation filter residue, the water-based resin, the alumina slurry, the titanium dioxide, the nano silicon dioxide, the soybean lecithin and the deionized water is 8:7:28:9:45: 5:2.5: 45.
Comparative example 1
Comparative example 1 compared to example 1, no microcapsule product was added to the coating, and the rest was identical to example 1.
Comparative example 2
Comparative example 2 compared with example 1, no fermentation residue was added to the coating, and the rest was completely the same as example 1.
The test method comprises the following steps:
And (3) adhesive force grade: the architectural coatings obtained in examples 1-5 and comparative examples 1-2 were uniformly coated on the surface of flexible asbestos plate, and after curing for 7 days, the coating adhesion rating of the coating was tested according to GB/T9286-1998 standard, and the test results are shown in Table 1;
Self-repairing performance of cracks: the architectural coatings obtained in the examples 1-5 and the comparative examples 1-2 are uniformly coated on a flexible asbestos board, and after the flexible asbestos board is naturally dried for 7 days, the flexible asbestos board is bent upwards for 5 times at a bending angle of 30 degrees, so that cracks are generated in the coating layer; and spraying the paint layer to be wet, performing self-repairing, and after 7 days of self-repairing, referring to a GB/T9286-1998 test for testing the layer adhesion grade of the prepared paint to measure the self-repairing performance.
Table 1:
| Performance index | Appearance of coating film | Grade of adhesion | self-repairing coating adhesion grade after 7 days |
| Example 1 | Film leveling | 1 | 2 |
| example 2 | Film leveling | 2 | 2 |
| example 3 | Film leveling | 1 | 2 |
| Example 4 | Film leveling | 2 | 2 |
| example 5 | Film leveling | 1 | 2 |
| comparative example 1 | film leveling | 2 | 4 |
| Comparative example 2 | Film leveling | 2 | 3 |
Claims (10)
1. The durable self-repairing building coating is characterized by being prepared by stirring a microcapsule product, fermentation filter residues, water-based resin, alumina slurry, titanium dioxide, nano silicon dioxide, soybean lecithin and deionized water; the microcapsule product is prepared by performing graft reaction on hydroxyethyl cellulose, acrylic acid, an initiator and a cross-linking agent, crushing the mixture to prepare a particle size product, and then adding melamine, formaldehyde, triethanolamine, tween 80 and water into emulsion obtained by taking the raw materials as raw materials to react; the fermentation filter residue is prepared by sealing and fermenting calcium carbonate and bacillus liquid, and the specific preparation method comprises the following steps:
(1) Putting hydroxyethyl cellulose into a container, adding a proper amount of 0.2mol/L NaOH solution, stirring in a water bath at 45 ℃ for 30min, slowly adding acrylic acid into the container, sequentially adding an initiator and a cross-linking agent, heating for reaction for a period of time, washing and filtering a product, drying in a drying oven at 60 ℃ to constant weight, crushing, and sieving with a 100-mesh sieve to obtain a particle-size product, namely the water absorbent;
(2) uniformly mixing melamine and formaldehyde solution according to the mass ratio of 1:3, adjusting the pH value to 8-9 by using triethanolamine aqueous solution with the mass ratio of 20-25%, stirring and heating to 60 ℃, reacting until the melamine is completely dissolved, then diluting by using water with the same volume as the formaldehyde, continuously reacting for 10min to obtain aqueous solution of melamine resin prepolymer, keeping the temperature of the solution at 70 ℃, then dripping into water containing tween 80 for ultrasonic emulsification to obtain pre-polymerized emulsion, then adding a granularity product into the pre-polymerized emulsion, adjusting the pH value of the system to 4-5 by using hydrochloric acid solution, stirring and reacting, then cooling, filtering, washing and drying to obtain a microcapsule product;
(3) Mixing calcium carbonate and bacillus liquid, placing the mixture in a fermentation tank, sealing the fermentation tank for fermentation, and filtering the mixture after the fermentation is finished to obtain fermentation filter residues;
(4) Adding the microcapsule product, the fermentation filter residue, the water-based resin, the alumina slurry, the titanium dioxide, the nano-silica, the soybean lecithin and the deionized water into a stirrer, and uniformly mixing and stirring to obtain the durable self-repairing building coating.
2. The durable self-repairing architectural coating of claim 1, wherein the aqueous resin is one or a combination of more than two of phenolic resin, acrylic resin, epoxy resin, polyester resin and polyurethane resin.
3. the durable self-repairing architectural coating of claim 1, wherein the crosslinker is N, N-methylenebisacrylamide.
4. the durable self-repairing architectural coating of claim 1, wherein the initiator is an azo initiator, and the azo initiator is one of azobisisobutyramidine hydrochloride, azobisisobutyrimidazoline hydrochloride, and azobisisobutyronitrile formamide.
5. The durable self-repairing architectural coating of claim 1, wherein the temperature of the heating reaction in step (1) is 45-50 ℃ and the reaction time is 1-3 hours.
6. the durable self-repairing building coating as claimed in claim 1, wherein in the step (1) of preparing the water absorbent, the mass ratio of the NaOH solution to the hydroxyethyl cellulose to the acrylic acid to the initiator to the cross-linking agent is 100:10-30:15-35:2-4: 1-3.
7. The durable self-repairing building coating of claim 1, wherein in the preparation of the emulsion in the step (2), the mass ratio of the water, tween 80 and the aqueous solution of the melamine resin prepolymer is 100:1-4: 40-55; the ultrasonic frequency of the ultrasonic emulsification is 40-60kHz, and the ultrasonic treatment is carried out for 30-40 min.
8. The durable self-repairing architectural coating of claim 1, wherein in the preparation of the microcapsule product in the step (2), the mass ratio of the particle size product to the pre-polymerization liquid is 1: 2; the stirring speed of the stirring reaction was 450rpm, and the stirring was carried out for 2.5 hours.
9. The durable self-repairing building coating of claim 1, wherein in the preparation of the fermentation filter residue in the step (3), the mass ratio of calcium carbonate to bacillus liquid is 3: 1; the temperature of the sealed fermentation is 35-45 ℃, and the fermentation time is 1 week.
10. The durable self-repairing building coating of claim 1, wherein in the step (4) of coating preparation, the mass ratio of the microcapsule product, the fermentation residue, the water-based resin, the alumina slurry, the titanium dioxide, the nano-silica, the soybean lecithin and the deionized water is 5-10:5-8:20-30:5-10:3-55:3-5:1-3: 40-60.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105289437A (en) * | 2015-10-29 | 2016-02-03 | 华南理工大学 | Preparation method of melamine resin microcapsules and application |
| CN106732423A (en) * | 2016-12-28 | 2017-05-31 | 西北师范大学 | A kind of preparation and application of hydroxyethyl cellulose/concave convex rod/sodium humate composite aquogel |
| CN107573810A (en) * | 2017-09-11 | 2018-01-12 | 太原市路邦科技有限公司 | Self-repairing waterborne epoxy elastic composite coating material and preparation method thereof |
| CN108276852A (en) * | 2018-03-12 | 2018-07-13 | 常州诺丁精密机械制造有限公司 | A kind of preparation method of densification humidity-preserving type lacquer |
-
2019
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105289437A (en) * | 2015-10-29 | 2016-02-03 | 华南理工大学 | Preparation method of melamine resin microcapsules and application |
| CN106732423A (en) * | 2016-12-28 | 2017-05-31 | 西北师范大学 | A kind of preparation and application of hydroxyethyl cellulose/concave convex rod/sodium humate composite aquogel |
| CN107573810A (en) * | 2017-09-11 | 2018-01-12 | 太原市路邦科技有限公司 | Self-repairing waterborne epoxy elastic composite coating material and preparation method thereof |
| CN108276852A (en) * | 2018-03-12 | 2018-07-13 | 常州诺丁精密机械制造有限公司 | A kind of preparation method of densification humidity-preserving type lacquer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210206992A1 (en) * | 2020-01-03 | 2021-07-08 | Autonomic Materials, Inc. | One-component waterborne self-healing epoxy formulation |
| US11613668B2 (en) * | 2020-01-03 | 2023-03-28 | Autonomic Materials, Inc. | One-component waterborne self-healing epoxy formulation |
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