CN116589907A - Durable concrete surface protective coating - Google Patents
Durable concrete surface protective coating Download PDFInfo
- Publication number
- CN116589907A CN116589907A CN202310789432.4A CN202310789432A CN116589907A CN 116589907 A CN116589907 A CN 116589907A CN 202310789432 A CN202310789432 A CN 202310789432A CN 116589907 A CN116589907 A CN 116589907A
- Authority
- CN
- China
- Prior art keywords
- parts
- epoxy
- protective coating
- surface protective
- concrete surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011253 protective coating Substances 0.000 title claims abstract description 84
- 239000003973 paint Substances 0.000 claims abstract description 120
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 112
- 239000004593 Epoxy Substances 0.000 claims abstract description 98
- -1 amino modified fullerene Chemical class 0.000 claims abstract description 78
- 229910052742 iron Inorganic materials 0.000 claims abstract description 56
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 42
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 39
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 39
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 37
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims abstract description 37
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims abstract description 37
- 239000004005 microsphere Substances 0.000 claims abstract description 35
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- 229920000647 polyepoxide Polymers 0.000 claims abstract description 25
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 150000001412 amines Chemical class 0.000 claims abstract description 16
- 239000002270 dispersing agent Substances 0.000 claims abstract description 15
- ZQBAKBUEJOMQEX-UHFFFAOYSA-N phenyl salicylate Chemical compound OC1=CC=CC=C1C(=O)OC1=CC=CC=C1 ZQBAKBUEJOMQEX-UHFFFAOYSA-N 0.000 claims abstract description 14
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 13
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- 229910052618 mica group Inorganic materials 0.000 claims abstract description 7
- 229960000969 phenyl salicylate Drugs 0.000 claims abstract description 7
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- QDCYEGPDNLLYAR-UHFFFAOYSA-M 3,3-dihydroxypropyl-dodecyl-dimethylazanium chloride Chemical compound [Cl-].C(CCCCCCCCCCC)[N+](CCC(O)O)(C)C QDCYEGPDNLLYAR-UHFFFAOYSA-M 0.000 claims description 15
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 15
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 15
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 15
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- XMWRBQBLMFGWIX-UHFFFAOYSA-N C60 fullerene Chemical class C12=C3C(C4=C56)=C7C8=C5C5=C9C%10=C6C6=C4C1=C1C4=C6C6=C%10C%10=C9C9=C%11C5=C8C5=C8C7=C3C3=C7C2=C1C1=C2C4=C6C4=C%10C6=C9C9=C%11C5=C5C8=C3C3=C7C1=C1C2=C4C6=C2C9=C5C3=C12 XMWRBQBLMFGWIX-UHFFFAOYSA-N 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 7
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 229910003468 tantalcarbide Inorganic materials 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 6
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- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 5
- 239000000654 additive Substances 0.000 claims description 5
- 230000000996 additive effect Effects 0.000 claims description 5
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 5
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 5
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 5
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 3
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- 239000002244 precipitate Substances 0.000 claims description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 10
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- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract 2
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- 150000003839 salts Chemical class 0.000 description 16
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- 230000002195 synergetic effect Effects 0.000 description 8
- 239000003513 alkali Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 239000000440 bentonite Substances 0.000 description 4
- 229940092782 bentonite Drugs 0.000 description 4
- 229910000278 bentonite Inorganic materials 0.000 description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 4
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- 239000011810 insulating material Substances 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- 239000007858 starting material Substances 0.000 description 4
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 2
- JQMFQLVAJGZSQS-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-N-(2-oxo-3H-1,3-benzoxazol-6-yl)acetamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)NC1=CC2=C(NC(O2)=O)C=C1 JQMFQLVAJGZSQS-UHFFFAOYSA-N 0.000 description 2
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
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- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
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- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
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- 238000005507 spraying Methods 0.000 description 2
- SXAMGRAIZSSWIH-UHFFFAOYSA-N 2-[3-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,2,4-oxadiazol-5-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NOC(=N1)CC(=O)N1CC2=C(CC1)NN=N2 SXAMGRAIZSSWIH-UHFFFAOYSA-N 0.000 description 1
- YJLUBHOZZTYQIP-UHFFFAOYSA-N 2-[5-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NN=C(O1)CC(=O)N1CC2=C(CC1)NN=N2 YJLUBHOZZTYQIP-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
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- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
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- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 description 1
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/70—Coating or impregnation for obtaining at least two superposed coatings having different compositions
- C04B41/71—Coating or impregnation for obtaining at least two superposed coatings having different compositions at least one coating being an organic material
-
- 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
- C09D105/00—Coating compositions based on polysaccharides or on their derivatives, not provided for in groups C09D101/00 or C09D103/00
- C09D105/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
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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
- C09D127/00—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 a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
-
- 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
- C09D5/002—Priming paints
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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
- 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
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Abstract
The application relates to the technical field of building protective materials, and particularly discloses a durable concrete surface protective coating. The durable concrete surface protective coating comprises an epoxy sealing primer layer, an epoxy cloud iron intermediate paint layer and a fluorocarbon finish paint layer; the epoxy seal primer consists ofA 1 Component and B 1 The components are composed of; a is that 1 The components comprise: dispersing agent, defoamer, ferric oxide red, epoxy resin, dimethylbenzene and amino modified fullerene; b (B) 1 The components comprise: phenolic amine curing agent, phenolic modified amine, xylene; the epoxy cloud iron intermediate paint is prepared from A 2 Component and B 2 The components are composed of; a is that 2 The components comprise: epoxy resin, mica ferric oxide, aluminum powder, polyvinyl alcohol/sodium carboxymethyl cellulose crosslinking microsphere, butanol, dispersant, phenyl salicylate, dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF; b (B) 2 The components comprise: phenolic modified amine, butanol. The durable concrete surface protective coating has excellent weather resistance and mechanical properties.
Description
Technical Field
The application relates to the technical field of building protective materials, in particular to a durable concrete surface protective coating.
Background
To increase the service life of the building, the concrete building surface may be coated with a protective coating. For example, with the continuous development of traffic industry, bridges are increasing, for example, in urban traffic, and interchange bridges are often constructed in order to relieve traffic pressure. Bridge structures typically include concrete members therein. However, the durability of concrete members in bridges is often poor, and for example, cracking, dishing, etc. are liable to occur under conditions of long-time heavy traffic, rain wash, freeze injury, etc. In order to improve the durability of the concrete bridge, a protective coating is generally applied to the concrete bridge Liang Biao after the bridge structure is constructed. The protective coating typically includes three layers of primer, intermediate and top coats to improve the corrosion and cracking resistance of the concrete bridge, and thus its durability.
However, the weather resistance, the waterproof performance and the mechanical performance of the coating on the surface of the concrete are still poor, so that the durability of the coating is poor, and the service life of the concrete building is influenced.
Disclosure of Invention
In order to improve the weather resistance, the waterproof performance and the mechanical property of the concrete surface protective coating, thereby improving the durability of the protective coating and prolonging the service life of a concrete building, the application provides the durable concrete surface protective coating, which adopts the following technical scheme:
the durable concrete surface protective coating comprises an epoxy sealing primer layer, an epoxy cloud iron intermediate paint layer and a fluorocarbon finish paint layer, wherein the epoxy sealing primer layer is formed by an epoxy sealing primer, the epoxy cloud iron intermediate paint layer is formed by an epoxy cloud iron intermediate paint, and the fluorocarbon finish paint layer is formed by a fluorocarbon finish paint; the epoxy seal coat consists of A with the mass ratio of 3:2 1 Component and B 1 The components are composed of; the A is 1 The components comprise the following raw materials in parts by weight: 0.1-0.3 part of dispersing agent, 0.05-0.2 part of defoamer, 5-12 parts of iron oxide red, 25-40 parts of epoxy resin, 20-30 parts of dimethylbenzene and 4-7 parts of amino-modified fullerene; the B is 1 The components comprise the following raw materials in parts by weight: 28-32 parts of phenolic aldehyde amine curing agent, 15-18 parts of phenolic aldehyde modified amine and 8-12 parts of dimethylbenzene; the epoxy cloud iron intermediate paint consists of A with the mass ratio of 3 (1-2) 2 Component and B 2 The components are composed of; the A is 2 The components comprise the following raw materials in parts by weight: 35-50 parts of epoxy resin, 10-22 parts of mica ferric oxide, 5-7 parts of aluminum powder, 3-6 parts of polyvinyl alcohol/sodium carboxymethyl cellulose crosslinking microsphere, 16-60 parts of butanol, 1-2 parts of dispersing agent, 4-8 parts of phenyl salicylate and 10-13 parts of dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF; the B is 2 The components comprise the following raw materials in parts by weight: 25-60 parts of phenolic aldehyde modified amine and 10-50 parts of butanol.
By adopting the technical scheme, the low-temperature flexibility of the durable concrete surface protective coating reaches 2mm at the temperature of minus 50 ℃; the adhesive force reaches 6.8MPa; the artificial accelerated aging resistance reaches 5000 hours, and the paint film is not foamed, peeled off and pulverized; the solar reflectance reaches 96%; the salt tolerance reaches 600h without abnormality. Therefore, the durability of the durable concrete surface protective coating is obviously improved through the mutual synergistic effect between the paint layers and the mutual synergistic effect between the raw materials, and the market demand is met.
The durable concrete surface protective coating comprises an epoxy sealing primer layer, an epoxy cloud iron intermediate paint layer and a fluorocarbon finish paint layer, wherein the epoxy sealing primer layer, the epoxy cloud iron intermediate paint layer and the fluorocarbon finish paint layer have excellent adhesive force and weather resistance. The epoxy sealing primer layer has excellent permeability, and the addition of the amino modified fullerene can improve the permeability and the adhesive force of the epoxy sealing primer layer. In addition, the addition of the amino modified fullerene helps to improve the oxidation resistance of the epoxy sealing primer layer. The epoxy cloud iron intermediate paint layer has excellent sealing performance, and the addition of the dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF can be stripped to form a sheet layer during solidification. The dihydroxyethyl dodecyl trimethyl ammonium chloride montmorillonite KSF and the amino modified fullerene have larger interaction force, so that the acting force and the adhesive force between the epoxy sealing primer layer and the epoxy cloud iron intermediate paint layer are increased. In addition, the addition of the polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres can improve the binding power of the epoxy cloud iron intermediate paint, and the polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres are mutually cooperated with amino modified fullerene, so that even on the surface of wet concrete, the polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres can absorb water and increase the binding power, and the durable concrete surface protective coating can be suitable for the surface of the wet concrete. The polyvinyl alcohol/sodium carboxymethyl cellulose crosslinking microsphere has larger surface area and strong adsorptivity, can adsorb phenyl salicylate, and improves the ultraviolet absorption capability of the epoxy cloud iron intermediate paint layer, thereby reducing the pulverization of the epoxy sealing primer layer. The fluorocarbon finish paint layer has excellent weather resistance, heat resistance, low temperature resistance and acid and alkali resistance, so that the durability of the durable concrete surface protective coating can be further improved.
In addition, the dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF in the epoxy cloud iron intermediate paint can be peeled off during solidification to form a sheet layer, so that the solar reflectance can be improved; meanwhile, the polyvinyl alcohol/sodium carboxymethyl cellulose crosslinking microsphere and the amino modified fullerene have stronger interaction force with the dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF, and the solar reflectance can be further improved, so that the temperature change of the durable concrete surface protective coating is reduced, and the temperature change resistance of the durable concrete surface protective coating is improved.
Optionally, the fluorocarbon finish paint consists of A with the mass ratio of 1 (0.5-1) 3 Component and B 3 Component composition, said A 3 The components comprise the following raw materials in parts by weight: 40-70 parts of flexible fluorocarbon resin, 15-25 parts of nano titanium dioxide, 2-15 parts of tantalum carbide, 2-5 parts of polypropylene micro powder, 5-12 parts of filler, 0.5-5 parts of film forming additive and 8-12 parts of dimethylbenzene; the B is 3 The components comprise the following raw materials in parts by weight: 40-55 parts of hexamethylene diisocyanate and 15-20 parts of dimethylbenzene.
By adopting the technical scheme, the stability and mechanical properties of the fluorocarbon finish paint can be improved by adding tantalum carbide and polypropylene micro powder.
Optionally, the polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microsphere comprises the following raw materials in parts by weight: 15-20 parts of polyvinyl alcohol, 170-180 parts of water, 10-15 parts of sodium carboxymethylcellulose, 10-15 parts of 0.5mol/L hydrochloric acid and 8-10 parts of 50% glutaraldehyde.
Optionally, the polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microsphere is prepared by the following method: adding polyvinyl alcohol into water, stirring uniformly, adding sodium carboxymethylcellulose, stirring until mixing uniformly, and adding 0.5mol/L hydrochloric acid under stirring to obtain a mixed solution; and (3) dropwise adding the mixed solution into glutaraldehyde, heating to 35-40 ℃, stirring for 2-3 hours to obtain crosslinked microspheres, and washing with sodium dodecyl sulfate, acetone, water and absolute methanol respectively after suction filtration to obtain the polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres.
Optionally, the dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF comprises the following raw materials in parts by weight: 10-16 parts of dihydroxyethyl dodecyl trimethyl ammonium chloride and 14-30 parts of montmorillonite KSF.
Optionally, the dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF is prepared by the following method: adding montmorillonite KSF into water to prepare a mixed solution of 23wt% of montmorillonite KSF and water; adding dihydroxyethyl dodecyl trimethyl ammonium chloride into water to prepare a 15wt% dihydroxyethyl dodecyl trimethyl ammonium chloride solution; and (3) uniformly mixing the mixed solution with the dihydroxyethyl dodecyl trimethyl ammonium chloride solution, heating to 70-85 ℃, reacting for 3-4h, centrifugally filtering until 0.1mol/L silver nitrate solution is added into the filtrate and does not generate white precipitate, drying filter residues, and grinding to 350-400 meshes to obtain the dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF.
By adopting the technical scheme, the preparation process of the dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF is simple and easy to operate.
Optionally, the durable concrete surface protective coating further comprises a carboxymethyl cellulose-chitosan layer, wherein the carboxymethyl cellulose-chitosan layer is positioned between the epoxy cloud iron intermediate paint layer and the fluorocarbon finish paint layer; the carboxymethyl cellulose-chitosan layer is formed by carboxymethyl cellulose-chitosan; the carboxymethyl cellulose-chitosan comprises the following raw materials in parts by weight: 25-30 parts of 2.5wt% carboxymethyl cellulose solution, 0.5-1 part of 36wt% hydrochloric acid, 25-30 parts of 2.5wt% chitosan acetic acid solution and 0.5-1 part of glycerol; the carboxymethyl cellulose-chitosan is prepared by the following method: adding hydrochloric acid into carboxymethyl cellulose solution under stirring, adding chitosan acetic acid solution under stirring, adding glycerol, stirring for 5-6h, and vacuum defoaming to obtain carboxymethyl cellulose-chitosan.
By adopting the technical scheme, the carboxymethyl cellulose-chitosan layer has larger flexibility, the fluorocarbon finish layer has smaller flexibility, and the flexibility of the durable concrete surface protective coating can be further improved by testing the carboxymethyl cellulose-chitosan layer between the epoxy cloud iron intermediate paint layer and the fluorocarbon finish layer.
Optionally, the epoxy seal primer is prepared by the following method: preparation A 1 The components are as follows: adding epoxy resin into dimethylbenzene to obtain epoxy resin mixed solution; adding dispersant, defoamer and iron oxide red into the epoxy resin mixed solution, adding amino modified fullerene at the rotating speed of 1200-1600r/min, and stirring for 30-45min to obtain A 1 A component (C); preparation B 1 The components are as follows: adding phenolic aldehyde amine curing agent and phenolic aldehyde modified amine into dimethylbenzene, and stirring until the phenolic aldehyde amine curing agent and phenolic aldehyde modified amine are uniformly mixed to obtain B 1 A component (C); when in use, will A 1 Component and B 1 And uniformly mixing the components to obtain the epoxy seal primer.
Optionally, the epoxy cloud iron intermediate paint is prepared by the following method: preparation A 2 The components are as follows: adding epoxy resin into butanol, stirring until the mixture is uniform, then adding dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF, and stirring for 30-60min to obtain a mixture I; uniformly mixing phenyl salicylate and polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres to obtain a mixture II; sequentially adding mica ferric oxide, aluminum powder and a dispersing agent into the mixture I, dispersing at a high speed uniformly, adding the mixture II, and stirring until uniformly mixing to obtain A 2 A component (C); preparation B 2 The components are as follows: adding phenolic aldehyde modified amine into butanol, stirring until the mixture is uniform to obtain B 2 A component (C); when in use, will A 2 Component and B 2 And uniformly mixing the components to obtain the epoxy cloud iron intermediate paint.
Optionally, the fluorocarbon finish paint is prepared by the following method: preparation A 3 The components are as follows: adding flexible fluorocarbon resin into dimethylbenzene, stirring until the materials are mixed uniformly, sequentially adding nano titanium dioxide, tantalum carbide, polypropylene micro powder and filler under the stirring condition of 1200-1400r/min, continuously stirring for 15-25min, adding film forming additive, and continuously stirring for 10-15min to obtain A 3 A component (C); preparation B 3 The components are as follows: adding hexamethylene diisocyanate into xylene, stirring at 800r/min for 20-30min to obtain B 3 A component (C); when in use, will A 3 Component and B 3 And uniformly mixing the components to obtain the fluorocarbon finish paint.
Optionally, the film forming auxiliary agent comprises one or more of modified acrylic resin, hydrophobic siloxane, ethylene-ethyl acrylate copolymer and 2, 6-di-tert-butyl-4-methylphenol.
Optionally, the filler is selected from one or more of ceramic microbeads, carbon black, and bentonite.
In summary, the application has at least the following advantages:
1. according to the durable concrete surface protective coating, the low-temperature flexibility of the durable concrete surface protective coating reaches 2mm at the temperature of minus 50 ℃ through the mutual synergistic effect among the epoxy sealing primer layer, the epoxy cloud iron intermediate paint layer and the fluorocarbon finish paint layer; the adhesive force reaches 6.8MPa; the artificial accelerated aging resistance reaches 5000 hours, and the paint film is not foamed, peeled off and pulverized; the solar reflectance reaches 96%; the salt water resistance reaches 600 hours without abnormality;
2. according to the durable concrete surface protective coating, the epoxy sealing primer layer, the epoxy cloud iron intermediate paint layer, the carboxymethyl cellulose-chitosan layer and the fluorocarbon finish paint layer are in synergistic interaction, so that the low-temperature flexibility of the durable concrete surface protective coating reaches 2mm at-50 ℃; the adhesive force reaches 7.3MPa; the artificial accelerated aging resistance reaches 5000 hours, and the paint film is not foamed, peeled off and pulverized; the solar reflectance reaches 97%; the salt water resistance reaches 600 hours without abnormality, and the carboxymethyl cellulose-chitosan layer can further improve the adhesive force and weather resistance of the durable concrete surface protective coating.
Detailed Description
The present application will be described in further detail with reference to examples.
Preparation example
Preparation example 1
The polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microsphere is prepared by the following method: adding 18kg of polyvinyl alcohol into 180kg of water, stirring until the mixture is uniform, adding 12kg of sodium carboxymethyl cellulose, stirring until the mixture is uniform, and adding 10kg of 0.5mol/L hydrochloric acid under the stirring condition to obtain a mixed solution; and (3) dropwise adding the mixture into 10kg of 50% glutaraldehyde, heating to 35 ℃, stirring for 3 hours to obtain crosslinked microspheres, and after suction filtration, washing with sodium dodecyl sulfate, acetone, water and absolute methanol in sequence to obtain the polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres.
Preparation example 2
The dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF is prepared by the following method: 23kg of montmorillonite KSF is added into 77kg of water to prepare a mixed solution of 23wt% of montmorillonite KSF and water; 12kg of dihydroxyethyl dodecyl trimethyl ammonium chloride was added to water to prepare a 15wt% dihydroxyethyl dodecyl trimethyl ammonium chloride solution; and (3) uniformly mixing the mixed solution with the dihydroxyethyl dodecyl trimethyl ammonium chloride solution, heating to 80 ℃, reacting for 3 hours, centrifugally filtering until white precipitation is not generated when 0.1mol/L silver nitrate solution is added into the filtrate, drying filter residues, and grinding to 400 meshes to obtain the dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF.
Examples
Example 1
A durable concrete surface protective coating, which comprises an epoxy sealing primer layer, an epoxy cloud iron intermediate paint layer and a fluorocarbon finish paint layer; the epoxy sealing primer layer is a paint layer tightly covered on the surface of the bridge, the epoxy cloud iron intermediate paint layer is a paint layer tightly covered on the epoxy sealing primer layer, and the fluorocarbon finish paint layer is a paint layer tightly covered on the epoxy cloud iron intermediate paint layer; the epoxy sealing primer layer is formed by an epoxy sealing primer, the epoxy cloud iron intermediate paint layer is formed by an epoxy cloud iron intermediate paint, and the fluorocarbon top paint layer is formed by a fluorocarbon top paint.
The durable concrete surface protective coating is prepared by the following method:
(1) Preparation of epoxy seal primer:
preparation A 1 The components are as follows: adding 30kg of epoxy resin into 30kg of dimethylbenzene to obtain an epoxy resin mixed solution; adding 0.1kg of dispersing agent, 0.05kg of defoamer and 8kg of ferric oxide red into the epoxy resin mixed solutionAdding 5kg of amino modified fullerene at 1600r/min, stirring for 45min to obtain A 1 A component (C); the epoxy resin is epoxy resin A and epoxy resin B with the mass ratio of 1:1, wherein the epoxy resin A is selected from Guangzhou commercial chemical industry Co., ltd, the model is Sanmu 828, and the epoxy resin B is selected from Guangzhou Yi chemical Co., ltd, and the model is 901X75; the dispersant is BYK-110; the defoamer is YCK-625 defoamer.
Preparation B 1 The components are as follows: 28kg of phenolic aldehyde amine curing agent and 15kg of phenolic aldehyde modified amine are added into 12kg of dimethylbenzene and stirred until the mixture is uniformly mixed, thus obtaining B 1 A component (C); wherein the phenolic amine curing agent is selected from the Cardline company, and the model is NX2016; the phenolic aldehyde modified amine is selected from insulating materials of the Baichen insulating materials of the Laizhou city, and the model is T31.
When in use, 30kg of A 1 Component and 20kg of B 1 And uniformly mixing the components to obtain the epoxy seal primer.
(2) Preparing an epoxy cloud iron intermediate paint:
preparation A 2 The components are as follows: adding 40kg of epoxy resin into 55kg of butanol, stirring until the mixture is uniformly mixed, then adding 12kg of dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF prepared in preparation example 2, and stirring for 50min to obtain a mixture I; uniformly mixing 4kg of phenyl salicylate and 4kg of polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres prepared in preparation example 1 to obtain a mixture II; sequentially adding 12kg of mica iron oxide, 6kg of aluminum powder and 1.5kg of dispersing agent into the mixture I, stirring at 1600r/min until the mixture is uniformly dispersed, adding the mixture II, and stirring until the mixture is uniformly mixed to obtain A 2 A component (C); wherein the epoxy resin is epoxy resin E44; the mesh number of the mica iron oxide is 400 mesh; the dispersant is dispersant 5040; the polyvinyl alcohol is polyvinyl alcohol 1788.
Preparation B 2 The components are as follows: 45kg of phenolic aldehyde modified amine is added into 50kg of butanol and stirred until the mixture is uniformly mixed to obtain B 2 A component (C); wherein the phenolic aldehyde modified amine is selected from insulating materials of the Baichen insulating materials of the Laizhou city, and the model is T31.
When in use, 30kg of A 2 Component and 15kg of B 2 The components are uniformly mixed to obtainThe epoxy cloud iron intermediate paint.
(3) Preparing fluorocarbon finish paint:
preparation A 3 The components are as follows: adding 55kg of flexible fluorocarbon resin into 12kg of dimethylbenzene, stirring until the materials are uniformly mixed, sequentially adding 20kg of nano titanium dioxide, 3kg of tantalum carbide, 3kg of polypropylene micro powder and 6kg of filler under the stirring condition of 1400r/min, continuously stirring for 25min, adding 1.5kg of film forming additive, and continuously stirring for 15min to obtain A 3 A component (C); wherein the flexible fluorocarbon resin is LF600X; the granularity of the tantalum carbide is 325 meshes; the polypropylene micro powder is selected from Shanghai Jin Suyu plastic raw materials limited company; the nano titanium dioxide is anatase 5 nm-level titanium dioxide; the filler is carbon black and bentonite with the mass ratio of 1:2; the carbon black is WS carbon black with 100 meshes; the bentonite is 400 mesh sodium bentonite and is selected from Heishan county ten thousand journey bentonite Limited liability company; the film forming auxiliary agent is 2, 6-di-tert-butyl-4-methylphenol.
Preparation B 3 The components are as follows: 45kg of hexamethylene diisocyanate was added to 18kg of xylene and stirred at 800r/min for 30min to give B 3 The components are as follows.
When in use, 20kg A is taken 3 Component and 16kg B 3 And uniformly mixing the components to obtain the fluorocarbon finish paint.
When in use, firstly, the surface of the bridge is coated with the epoxy sealing primer to obtain the epoxy sealing primer layer; then coating an epoxy cloud iron intermediate paint on the surface of the epoxy sealing primer layer to obtain an epoxy cloud iron intermediate paint layer; coating fluorocarbon finish paint on the surface of the epoxy cloud iron intermediate paint layer to obtain a fluorocarbon finish paint layer; the epoxy sealing primer layer, the epoxy cloud iron intermediate paint layer and the fluorocarbon finish paint layer form a durable concrete surface protective coating.
Example 2
The difference between the durable concrete surface protective coating and the example 1 is that a carboxymethyl cellulose-chitosan layer is also included between the epoxy cloud iron intermediate paint layer and the fluorocarbon top paint layer, the carboxymethyl cellulose-chitosan layer is formed by carboxymethyl cellulose-chitosan, and the carboxymethyl cellulose-chitosan is prepared by the following method: adding 28kg of 2.5wt% carboxymethyl cellulose solution into 0.6kg of 36wt% hydrochloric acid under stirring, adding 30kg of 2.5wt% chitosan acetic acid solution under stirring, adding 0.7kg of glycerol, stirring for 6h, and performing vacuum defoaming to obtain carboxymethyl cellulose-chitosan; when in use, the carboxymethyl cellulose-chitosan is coated on the surface of the epoxy cloud iron intermediate paint layer to form a carboxymethyl cellulose-chitosan layer; and (3) coating fluorocarbon finish paint on the surface of the carboxymethyl cellulose-chitosan layer to form a fluorocarbon finish paint layer, wherein the rest is the same as in the example 1.
Comparative example
Comparative example 1
A durable concrete surface protective coating is distinguished from example 1 in that A 1 The starting materials of the components were not composed of amino-modified fullerene, and the other components were the same as in example 1.
Comparative example 2
A durable concrete surface protective coating is distinguished from example 1 in that A 2 The raw materials of the components do not include polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres, and the rest is the same as in example 1.
Comparative example 3
A durable concrete surface protective coating is distinguished from example 1 in that A 2 The raw materials of the components do not include dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF, and the rest are the same as in example 1.
Comparative example 4
A durable concrete surface protective coating is distinguished from example 1 in that the same amount of montmorillonite KSF is used instead of dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF, and the rest is the same as in example 1.
Comparative example 5
A durable concrete surface protective coating is distinguished from example 1 in that A 2 The raw materials of the components do not comprise dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF and polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres, and the rest are the same as in example 1.
Comparative example 6
Durable concrete surface protection coatingA layer which differs from example 1 in that a 1 The starting materials of the component do not include amino-modified fullerenes, and A 2 The raw materials of the components do not include polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres, and the rest is the same as in example 1.
Comparative example 7
A durable concrete surface protective coating is distinguished from example 1 in that A 1 The starting materials of the component do not include amino-modified fullerenes, and A 2 The raw materials of the components do not include dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF, and the rest are the same as in example 1.
Application example
Application example 1
A construction process comprises the following steps:
surface treatment: cleaning floating ash, floating slurry, slag inclusion, moss and loose parts on the concrete surface of the bridge by adopting high-pressure fresh water (the pressure is not less than 20 MPa), sand blasting or manual polishing and other methods; treating the concrete surface polluted by the oil dirt locally with alkali liquor, a detergent or a solvent, and flushing the concrete surface to be neutral with fresh water;
coating an epoxy sealing primer: a prepared in example 1 1 Component and B 1 The components are uniformly stirred, uniformly stirred again after being mixed, placed and cured, then coated, pre-coated by a brush coating method, then airless sprayed for 1 time, the retention time is not more than one week, and the thickness of the dry film of the obtained epoxy sealing primer layer is less than 50 mu m;
and (3) coating an epoxy cloud iron intermediate paint: stirring uniformly with a mechanical stirring device to obtain A in example 1 2 Component and B 2 The components are uniformly stirred by a mechanical stirring device after being mixed, then the epoxy cloud iron intermediate paint is coated for 1 time by airless spraying, and the dry film thickness of the obtained epoxy cloud iron intermediate paint layer is 120 mu m;
and (3) coating fluorocarbon finishing paint: firstly, polishing and flattening the partial sagging of the epoxy cloud iron intermediate paint layer, and respectively obtaining A prepared in the example 1 3 Component and B 3 The components are stirred uniformly, stirred uniformly again after mixing, and kept for curing without any reactionAnd (3) spraying air for 2 times, wherein the dry film thickness of the obtained fluorocarbon finish paint layer is 240 mu m.
Application example 2
The construction process is different from the application example 1 in that after the epoxy cloud iron intermediate paint is coated, the carboxymethyl cellulose-chitosan prepared in the example 2 is coated on the surface of the formed epoxy cloud iron intermediate paint layer to form a carboxymethyl cellulose-chitosan layer, and then fluorocarbon finish paint is coated on the surface of the carboxymethyl cellulose-chitosan layer.
Performance test
The following performance tests were carried out on the epoxy seal primers prepared in example 1 and comparative example 1:
according to GB/T5210, the adhesion of the epoxy primer sealer is tested;
the epoxy primer was tested for resistance to temperature denaturation (8 cycles) according to appendix D of Q/CR 410-2020, and the test results are shown in Table 1.
As can be seen from Table 1, the epoxy seal primer prepared in example 1 of the present application has an adhesion of 6MPa or more and excellent heat resistance, and the coating is free from damage after 8 cycles of heat resistance test. The adhesion of the epoxy seal primer prepared in comparative example 1 is 3MPa or more, and after 8-cycle temperature change resistance test, the coating peels off. In comparison with example 1, A in comparative example 1 1 The raw materials of the components do not comprise amino modified fullerene, and comparison shows that the addition of the amino modified fullerene can improve the adhesive force and the temperature change resistance of the epoxy sealing primer.
The epoxy cloud iron intermediate paint prepared in example 1 and comparative examples 2-5 was subjected to the following performance tests:
according to GB/T1732, detecting the impact resistance of the epoxy cloud iron intermediate paint;
according to GB/T5210, detecting the adhesive force of the epoxy cloud iron intermediate paint by a pulling-out method;
according to GB/T1740, the wet heat resistance of the epoxy cloud iron intermediate paint was detected, and the detection results are shown in Table 2.
As can be seen from Table 2, the epoxy cloud iron intermediate paint prepared by the application has excellent impact resistance, adhesive force and wet heat resistance, and the impact resistance is more than or equal to 70cm; the adhesive force is more than or equal to 7MPa; the wet heat resistance reaches 180 hours, and the coating has no bubble, no wrinkling, no flaking and no rust.
Comparative example 2 and example 1 were compared, A in comparative example 2 2 The raw materials of the components do not comprise polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres; comparative example 3 was compared with example 1, A in comparative example 3 2 The raw materials of the components do not comprise dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF, so that the impact resistance, the adhesive force and the wet heat resistance of the epoxy cloud iron intermediate paint are poor. Therefore, the addition of the polyvinyl alcohol/sodium carboxymethylcellulose crosslinking microsphere and the dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF is beneficial to improving the impact resistance, the adhesive force and the wet heat resistance of the epoxy cloud iron intermediate paint.
Comparative example 4 and example 1 were compared, and the equivalent amount of montmorillonite KSF was used in comparative example 4 instead of dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF, so that the impact resistance, adhesion and wet heat resistance of the epoxy cloud iron intermediate paint were deteriorated. Therefore, the impact resistance, the adhesive force and the wet heat resistance of the epoxy cloud iron intermediate paint can be improved by modifying montmorillonite KSF with dihydroxyethyl dodecyl trimethyl ammonium chloride.
Comparative example 5 was compared with example 1, A in comparative example 5 2 The raw materials of the components do not comprise dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF and polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres, so that the impact resistance, adhesive force and moist heat resistance of the epoxy cloud iron intermediate paint are poor. In combination with comparative example 2 and comparative example 3, it can be seen that the mutual synergy between the dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF and the polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microsphere can further improveImpact resistance, adhesion and wet heat resistance of the epoxy cloud iron intermediate paint.
The fluorocarbon finish prepared in example 1 was tested for the following properties:
according to GB/T528, the tensile strength of the fluorocarbon finish paint is detected;
according to GB/T528, the elongation at break of the fluorocarbon finish paint is detected;
according to GB/T6742, the bending performance of fluorocarbon finish paint is detected;
according to GB/T1732, detecting the impact resistance of fluorocarbon finish paint;
the abrasion resistance (CS-10, 500r/500 g) of the fluorocarbon topcoat was tested according to GB/T1768;
according to GB/T5210, detecting the adhesive force of the fluorocarbon finish paint by adopting a pulling-off method;
according to GB/T1865, detecting the artificial accelerated aging resistance of the fluorocarbon finish paint;
according to GB/T9274, fluorocarbon top coats were tested for acid resistance (10 wt% H 2 SO 4 ) And alkali resistance (10 wt% NaOH), and the results are shown in Table 3.
As can be seen from Table 3, the fluorocarbon finish paint prepared by the application has excellent mechanical properties, wear resistance, acid and alkali resistance and ageing resistance, wherein the tensile strength reaches 13MPa; elongation at break up to 100%; the bending performance is less than or equal to 2mm; impact resistance is more than or equal to 50cm; the wear resistance is less than or equal to 0.03g; the adhesive force is more than or equal to 7MPa; the acid resistance and the alkali resistance reach 360 hours, and the paint film is free from abnormality; the artificial accelerated aging resistance reaches 5000 hours, and the paint film is not foamed, peeled off and pulverized.
The durable concrete surface protective coatings prepared in examples 1-2 and comparative examples 1-7 were subjected to the following performance tests:
according to GB/T6742-2007, the low-temperature flexibility of a durable concrete surface protective coating at-50 ℃ is detected;
detecting the adhesive force of the durable concrete surface protective coating according to GB/T5210-2006;
according to GB/T14522-2008, detecting the artificial accelerated aging resistance of the durable concrete surface protective coating;
detecting the solar reflectance of the durable concrete surface protective coating according to JGJ/T287-2014;
according to GB/T9274, the brine resistance (3 wt% NaCl) of the durable concrete surface protective coating is tested, and the test results are shown in Table 4.
As can be seen from Table 4, the durable concrete surface protective coating of the present application has excellent low temperature flexibility, adhesion, artificial accelerated aging resistance, solar light reflection ability, and brine resistance. Wherein the low-temperature flexibility reaches 2mm at-50 ℃; the adhesive force is in the range of 6.8-7.3MPa; the artificial accelerated aging resistance reaches 5000 hours, and the paint film is not foamed, peeled off and pulverized; the range of solar reflectance is 96% -97%; the salt tolerance reaches 600h without abnormality. It can be seen that the durable concrete surface protective coating of the application remarkably improves the mechanical property, weather resistance and water resistance of the concrete surface protective coating by the mutual synergistic effect of the raw materials and the mutual synergistic effect of the layers, is beneficial to prolonging the service life of the building and meets the market demand.
Comparing comparative example 1 with example 1, the durable concrete surface protective coating prepared in example 1 has a low temperature flexibility of 2mm at-50 ℃; the adhesive force is 6.8MPa; the artificial accelerated aging resistance is 5000 hours, and the paint film is not foamed, peeled off and pulverized; solar reflectance was 96%; the salt tolerance is 600h without abnormality. The low temperature flexibility of the durable concrete surface protective coating prepared in comparative example 1 was 3mm at-50 ℃; the adhesive force is 4.8MPa; the artificial accelerated aging resistance is 3500h, and the paint film is not foamed, peeled off and pulverized; the solar reflectance was 85%; the salt tolerance is 480h without abnormality. In comparison with example 1, A in comparative example 1 1 The raw materials of the components do not comprise amino modified fullerene, so that the adhesive force, weather resistance, salt water resistance and mechanical properties of the durable concrete surface protective coating are reduced, which indicates that the amino modificationThe addition of fullerene helps to improve the adhesion, weather resistance, salt water resistance and mechanical properties of the durable concrete surface protective coating.
Comparing comparative example 2 with example 1, the durable concrete surface protective coating prepared in example 1 has a low temperature flexibility of 2mm at-50 ℃; the adhesive force is 6.8MPa; the artificial accelerated aging resistance is 5000 hours, and the paint film is not foamed, peeled off and pulverized; solar reflectance was 96%; the salt tolerance is 600h without abnormality. The low temperature flexibility of the durable concrete surface protective coating prepared in comparative example 2 was 3mm at-50 ℃; the adhesive force is 4.9MPa; the artificial accelerated aging resistance is 4000 hours, and the paint film is not foamed, peeled off and pulverized; the solar reflectance was 86%; the salt tolerance is 480h without abnormality. In comparison with example 1, A in comparative example 2 2 The raw materials of the components do not comprise polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres, so that the adhesive force, weather resistance, salt water resistance and mechanical properties of the durable concrete surface protective coating are reduced, and the addition of the polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres is helpful for improving the adhesive force, weather resistance, salt water resistance and mechanical properties of the durable concrete surface protective coating.
Comparing comparative example 3 with example 1, the durable concrete surface protective coating prepared in example 1 has a low temperature flexibility of 2mm at-50 ℃; the adhesive force is 6.8MPa; the artificial accelerated aging resistance is 5000 hours, and the paint film is not foamed, peeled off and pulverized; solar reflectance was 96%; the salt tolerance is 600h without abnormality. The low temperature flexibility of the durable concrete surface protective coating prepared in comparative example 3 was 3mm at-50 ℃; the adhesive force is 3.8MPa; the artificial accelerated aging resistance is 3500h, and the paint film is not foamed, peeled off and pulverized; solar reflectance is 80%; the salt tolerance is 480h without abnormality. In comparison with example 1, A in comparative example 3 2 The raw materials of the components do not comprise dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF, so that the adhesive force, weather resistance, salt water resistance and mechanical properties of the durable concrete surface protective coating are reduced, and the addition of the dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF is helpful for extractionAdhesion, weather resistance, salt water resistance and mechanical property of the high-durability concrete surface protective coating.
Comparing comparative example 4 with example 1, the durable concrete surface protective coating prepared in example 1 has a low temperature flexibility of 2mm at-50 ℃; the adhesive force is 6.8MPa; the artificial accelerated aging resistance is 5000 hours, and the paint film is not foamed, peeled off and pulverized; solar reflectance was 96%; the salt tolerance is 600h without abnormality. The low temperature flexibility of the durable concrete surface protective coating prepared in comparative example 4 was 2mm at-50 ℃; the adhesive force is 4.6MPa; the artificial accelerated aging resistance is 3500h, and the paint film is not foamed, peeled off and pulverized; the solar reflectance is 82%; the salt tolerance is 480h without abnormality. Compared with example 1, the equivalent amount of montmorillonite KSF is used for replacing dihydroxyethyl dodecyl trimethyl ammonium chloride to modify montmorillonite KSF, so that the adhesive force, weather resistance, salt water resistance and mechanical property of the durable concrete surface protective coating are reduced, and the modification of montmorillonite KSF by dihydroxyethyl dodecyl trimethyl ammonium chloride is helpful for improving the adhesive force, weather resistance, salt water resistance and mechanical property of the durable concrete surface protective coating.
Comparing comparative example 5 with example 1, the durable concrete surface protective coating prepared in example 1 has a low temperature flexibility of 2mm at-50 ℃; the adhesive force is 6.8MPa; the artificial accelerated aging resistance is 5000 hours, and the paint film is not foamed, peeled off and pulverized; solar reflectance was 96%; the salt tolerance is 600h without abnormality. The low temperature flexibility of the durable concrete surface protective coating prepared in comparative example 5 was 4mm at-50 ℃; the adhesive force is 3.5MPa; the artificial accelerated aging resistance is 3000 hours, and the paint film is not foamed, peeled off and pulverized; solar reflectance was 79%; the salt tolerance is 360h without abnormality. In comparison with example 1, A in comparative example 5 2 The raw materials of the components do not comprise dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF and polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres, so that the adhesive force, weather resistance, salt water resistance and mechanical properties of the durable concrete surface protective coating are reduced, and the dihydroxyl is illustrated by combining comparative example 2 and comparative example 3The interaction synergistic effect exists between the ethyldodecyl trimethyl ammonium chloride modified montmorillonite KSF and the polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microsphere, so that the adhesive force, weather resistance, salt water resistance and mechanical property of the durable concrete surface protective coating can be improved.
Comparing comparative example 6 with example 1, the durable concrete surface protective coating prepared in example 1 has a low temperature flexibility of 2mm at-50 ℃; the adhesive force is 6.8MPa; the artificial accelerated aging resistance is 5000 hours, and the paint film is not foamed, peeled off and pulverized; solar reflectance was 96%; the salt tolerance is 600h without abnormality. The low temperature flexibility of the durable concrete surface protective coating prepared in comparative example 6 was 4mm at-50 ℃; the adhesive force is 3.6MPa; the artificial accelerated aging resistance is 3000 hours, and the paint film is not foamed, peeled off and pulverized; solar reflectance was 76%; the salt tolerance is 360h without abnormality. In comparison with example 1, A in comparative example 6 1 The starting materials of the component do not include amino-modified fullerenes, and A 2 The raw materials of the components do not comprise polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres, so that the adhesive force, weather resistance, salt water resistance and mechanical properties of the durable concrete surface protective coating are reduced, and by combining comparative example 1 and comparative example 2, the amino modified fullerene and the polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres have a mutual synergistic effect, and the adhesive force, weather resistance, salt water resistance and mechanical properties of the durable concrete surface protective coating can be improved.
Comparing comparative example 7 with example 1, the durable concrete surface protective coating prepared in example 1 has a low temperature flexibility of 2mm at-50 ℃; the adhesive force is 6.8MPa; the artificial accelerated aging resistance is 5000 hours, and the paint film is not foamed, peeled off and pulverized; solar reflectance was 96%; the salt tolerance is 600h without abnormality. The low temperature flexibility of the durable concrete surface protective coating prepared in comparative example 7 was 4mm at-50 ℃; the adhesive force is 2.9MPa; the artificial accelerated aging resistance is 3000 hours, and the paint film is not foamed, peeled off and pulverized; the solar reflectance was 69%; the salt tolerance is 360h without abnormality. In comparison with example 1, A in comparative example 7 1 The raw materials of the components are not coveredComprising amino-modified fullerenes, and A 2 The raw materials of the components do not comprise dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF, so that the adhesive force, weather resistance, salt water resistance and mechanical properties of the durable concrete surface protective coating are reduced, and by combining comparative example 1 and comparative example 3, the mutual synergistic effect between amino modified fullerene and dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF is shown, and the adhesive force, weather resistance, salt water resistance and mechanical properties of the durable concrete surface protective coating can be improved.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (10)
1. The durable concrete surface protective coating is characterized by comprising an epoxy sealing primer layer, an epoxy cloud iron intermediate paint layer and a fluorocarbon finish paint layer, wherein the epoxy sealing primer layer is formed by an epoxy sealing primer, the epoxy cloud iron intermediate paint layer is formed by an epoxy cloud iron intermediate paint, and the fluorocarbon finish paint layer is formed by a fluorocarbon finish paint;
the epoxy seal coat consists of A with the mass ratio of 3:1-2 1 Component and B 1 The components are composed of;
the A is 1 The components comprise the following raw materials in parts by weight: 0.1-0.3 part of dispersing agent, 0.05-0.2 part of defoamer, 5-12 parts of iron oxide red, 25-40 parts of epoxy resin, 20-30 parts of dimethylbenzene and 4-7 parts of amino-modified fullerene;
the B is 1 The components comprise the following raw materials in parts by weight: 28-32 parts of phenolic aldehyde amine curing agent, 15-18 parts of phenolic aldehyde modified amine and 8-12 parts of dimethylbenzene;
the epoxy cloud iron intermediate paint consists of A with the mass ratio of 3:1-2 2 Component and B 2 The components are composed of;
the A is 2 The components comprise the following raw materials in parts by weight: epoxy resin 35-50 parts of mica ferric oxide 10-22 parts, 5-7 parts of aluminum powder, 3-6 parts of polyvinyl alcohol/sodium carboxymethyl cellulose crosslinking microsphere, 16-60 parts of butanol, 1-2 parts of dispersing agent, 4-8 parts of phenyl salicylate, and 10-13 parts of dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF;
the B is 2 The components comprise the following raw materials in parts by weight: 25-60 parts of phenolic aldehyde modified amine and 10-50 parts of butanol.
2. The durable concrete surface protective coating according to claim 1, wherein the fluorocarbon top coat consists of a in a mass ratio of 1:0.5-1 3 Component and B 3 Component composition, said A 3 The components comprise the following raw materials in parts by weight: 40-70 parts of flexible fluorocarbon resin, 15-25 parts of nano titanium dioxide, 2-15 parts of tantalum carbide, 2-5 parts of polypropylene micro powder, 5-12 parts of filler, 0.5-5 parts of film forming additive and 8-12 parts of dimethylbenzene;
the B is 3 The components comprise the following raw materials in parts by weight: 40-55 parts of hexamethylene diisocyanate and 15-20 parts of dimethylbenzene.
3. The durable concrete surface protective coating according to claim 1, wherein the polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres comprise the following raw materials in parts by weight: 15-20 parts of polyvinyl alcohol, 170-180 parts of water, 10-15 parts of sodium carboxymethylcellulose, 10-15 parts of 0.5mol/L hydrochloric acid and 8-10 parts of 50% glutaraldehyde.
4. A durable concrete surface protective coating according to claim 3, wherein the polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres are prepared by the following method:
adding polyvinyl alcohol into water, stirring uniformly, adding sodium carboxymethylcellulose, stirring until mixing uniformly, and adding 0.5mol/L hydrochloric acid under stirring to obtain a mixed solution;
and (3) dropwise adding the mixed solution into glutaraldehyde, heating to 35-40 ℃, stirring for 2-3 hours to obtain crosslinked microspheres, and washing with sodium dodecyl sulfate, acetone, water and absolute methanol respectively after suction filtration to obtain the polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres.
5. The durable concrete surface protective coating according to claim 1, wherein the dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF comprises the following raw materials in parts by weight: 10-16 parts of dihydroxyethyl dodecyl trimethyl ammonium chloride and 14-30 parts of montmorillonite KSF.
6. The durable concrete surface protective coating according to claim 5, wherein the dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF is prepared by the following method:
adding montmorillonite KSF into water to prepare a mixed solution of 23wt% of montmorillonite KSF and water;
adding dihydroxyethyl dodecyl trimethyl ammonium chloride into water to prepare a 15wt% dihydroxyethyl dodecyl trimethyl ammonium chloride solution;
and (3) uniformly mixing the mixed solution with the dihydroxyethyl dodecyl trimethyl ammonium chloride solution, heating to 70-85 ℃, reacting for 3-4h, centrifugally filtering until 0.1mol/L silver nitrate solution is added into the filtrate and does not generate white precipitate, drying filter residues, and grinding to 350-400 meshes to obtain the dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF.
7. The durable concrete surface protective coating of claim 1, further comprising a carboxymethyl cellulose-chitosan layer positioned between the epoxy cloud iron intermediate paint layer and the fluorocarbon topcoat layer, the carboxymethyl cellulose-chitosan layer being formed from carboxymethyl cellulose-chitosan;
the carboxymethyl cellulose-chitosan comprises the following raw materials in parts by weight: 25-30 parts of 2.5wt% carboxymethyl cellulose solution, 0.5-1 part of 36wt% hydrochloric acid, 25-30 parts of 2.5wt% chitosan acetic acid solution and 0.5-1 part of glycerol;
the carboxymethyl cellulose-chitosan is prepared by the following method: adding hydrochloric acid into carboxymethyl cellulose solution under stirring, adding chitosan acetic acid solution under stirring, adding glycerol, stirring for 5-6h, and vacuum defoaming to obtain carboxymethyl cellulose-chitosan.
8. The durable concrete surface protective coating according to claim 1, wherein the epoxy sealer is prepared by the following method:
preparation A 1 The components are as follows: adding epoxy resin into dimethylbenzene to obtain epoxy resin mixed solution;
adding dispersant, defoamer and iron oxide red into the epoxy resin mixed solution, adding amino modified fullerene at the rotating speed of 1200-1600r/min, and stirring for 30-45min to obtain A 1 A component (C);
preparation B 1 The components are as follows: adding phenolic aldehyde amine curing agent and phenolic aldehyde modified amine into dimethylbenzene, and stirring until the phenolic aldehyde amine curing agent and phenolic aldehyde modified amine are uniformly mixed to obtain B 1 A component (C);
when in use, will A 1 Component and B 1 And uniformly mixing the components to obtain the epoxy seal primer.
9. The durable concrete surface protective coating according to claim 1, wherein the epoxy cloud iron intermediate paint is prepared by the following method:
preparation A 2 The components are as follows: adding epoxy resin into butanol, stirring until the mixture is uniform, then adding dihydroxyethyl dodecyl trimethyl ammonium chloride modified montmorillonite KSF, and stirring for 30-60min to obtain a mixture I;
uniformly mixing phenyl salicylate and polyvinyl alcohol/sodium carboxymethyl cellulose crosslinked microspheres to obtain a mixture II;
sequentially adding mica ferric oxide, aluminum powder and a dispersing agent into the mixture I, dispersing at a high speed uniformly, adding the mixture II, and stirring until uniformly mixing to obtain A 2 A component (C);
preparation B 2 The components are as follows: adding phenolic aldehyde modified amine into butanol, stirring until the mixture is uniform to obtain B 2 A component (C);
when in use, will A 2 Component and B 2 And uniformly mixing the components to obtain the epoxy cloud iron intermediate paint.
10. The durable concrete surface protective coating according to claim 2, wherein the fluorocarbon topcoat is prepared by the following method:
preparation A 3 The components are as follows: adding flexible fluorocarbon resin into dimethylbenzene, stirring until the materials are mixed uniformly, sequentially adding nano titanium dioxide, tantalum carbide, polypropylene micro powder and filler under the stirring condition of 1200-1400r/min, continuously stirring for 15-25min, adding film forming additive, and continuously stirring for 10-15min to obtain A 3 A component (C);
preparation B 3 The components are as follows: adding hexamethylene diisocyanate into xylene, stirring at 800r/min for 20-30min to obtain B 3 A component (C);
when in use, will A 3 Component and B 3 And uniformly mixing the components to obtain the fluorocarbon finish paint.
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