CN109354998A - A kind of preparation method of concrete-bridge waterproof coating and its construction method and polyurethane intermediate coat, polyurethane finish - Google Patents
A kind of preparation method of concrete-bridge waterproof coating and its construction method and polyurethane intermediate coat, polyurethane finish Download PDFInfo
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- CN109354998A CN109354998A CN201810982667.4A CN201810982667A CN109354998A CN 109354998 A CN109354998 A CN 109354998A CN 201810982667 A CN201810982667 A CN 201810982667A CN 109354998 A CN109354998 A CN 109354998A
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- 239000004814 polyurethane Substances 0.000 title claims abstract description 93
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 93
- 238000000576 coating method Methods 0.000 title claims abstract description 66
- 239000011248 coating agent Substances 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000010276 construction Methods 0.000 title claims abstract description 12
- 239000004567 concrete Substances 0.000 claims abstract description 28
- 239000004593 Epoxy Substances 0.000 claims abstract description 9
- 125000003700 epoxy group Chemical group 0.000 claims abstract description 9
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 9
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 78
- 229920000570 polyether Polymers 0.000 claims description 72
- 239000002904 solvent Substances 0.000 claims description 58
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 53
- 238000003756 stirring Methods 0.000 claims description 46
- 239000003795 chemical substances by application Substances 0.000 claims description 37
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 30
- 239000003431 cross linking reagent Substances 0.000 claims description 30
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 30
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 28
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 28
- 229920005862 polyol Polymers 0.000 claims description 28
- 150000003077 polyols Chemical class 0.000 claims description 28
- 239000000945 filler Substances 0.000 claims description 27
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 24
- 239000004408 titanium dioxide Substances 0.000 claims description 24
- 239000006229 carbon black Substances 0.000 claims description 16
- 230000002209 hydrophobic effect Effects 0.000 claims description 16
- 229920001296 polysiloxane Polymers 0.000 claims description 16
- 239000004925 Acrylic resin Substances 0.000 claims description 15
- 229920000178 Acrylic resin Polymers 0.000 claims description 15
- 239000000440 bentonite Substances 0.000 claims description 15
- 229910000278 bentonite Inorganic materials 0.000 claims description 15
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 15
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 12
- 239000004611 light stabiliser Substances 0.000 claims description 12
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 11
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 8
- 239000002518 antifoaming agent Substances 0.000 claims description 8
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 8
- 239000012948 isocyanate Substances 0.000 claims description 8
- 150000002513 isocyanates Chemical class 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 7
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003973 paint Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 4
- 239000005062 Polybutadiene Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 235000013312 flour Nutrition 0.000 claims description 4
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- 239000011325 microbead Substances 0.000 claims description 4
- 229920002857 polybutadiene Polymers 0.000 claims description 4
- 229920000909 polytetrahydrofuran Polymers 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- 150000002009 diols Chemical class 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- HJOVHMDZYOCNQW-UHFFFAOYSA-N isophorone Chemical compound CC1=CC(=O)CC(C)(C)C1 HJOVHMDZYOCNQW-UHFFFAOYSA-N 0.000 claims 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims 3
- 229910021529 ammonia Inorganic materials 0.000 claims 2
- 125000005442 diisocyanate group Chemical group 0.000 claims 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 239000012752 auxiliary agent Substances 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- -1 poly- ammonia Ester Chemical class 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 238000004381 surface treatment Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 description 12
- 230000032683 aging Effects 0.000 description 9
- 238000011056 performance test Methods 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
- 238000002310 reflectometry Methods 0.000 description 6
- 239000004576 sand Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 4
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical group CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N phthalic acid di-n-butyl ester Natural products CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical class CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- OROGMFAJDWZOPU-UHFFFAOYSA-N [O-2].[O-2].[Ti+4].[Sn+2]=O.[Sb+3] Chemical compound [O-2].[O-2].[Ti+4].[Sn+2]=O.[Sb+3] OROGMFAJDWZOPU-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920006226 ethylene-acrylic acid Polymers 0.000 description 1
- 230000009746 freeze damage Effects 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
-
- 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
- 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
-
- 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
- C09D5/004—Reflecting paints; Signal paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/40—Plastics
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
- Sealing Material Composition (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A kind of preparation method of concrete-bridge waterproof coating and its construction method and polyurethane intermediate coat, polyurethane finish, to significantly improve its durability and Years Of Service, good concrete water-proof effect and convenient to use can be reached in the case where coating thickness is relatively thin.A kind of concrete-bridge waterproof coating of the invention is coated on concrete surface.Seal coat layer, intermediate primer layers and the top coat layer that the waterproof coating is set gradually outside by inner are compound to be constituted, and seal coat layer is coated by epoxies seal coat and formed, and intermediate primer layers are coated by polyurethane intermediate coat and formed, and top coat layer is coated by polyurethane finish and formed.
Description
Technical field
The present invention relates to concrete bridge deck waterproof, in particular to a kind of concrete-bridge waterproof coating and its construction method and
The preparation method of polyurethane intermediate coat, polyurethane finish.
Background technique
Currently, China railways are accelerated in the regional construction process such as rainy environment, railroad bridge design in 100 years is made
For the service life, concrete bridge structure is designed with bridge deck water-proof system, but for a long time, and existing railway concrete bridge floor contains
Concrete cover coil waterproof layer is damaged in the north by freeze injury, and surface lacquer mechanical property is low etc. in original polyurethane water-proof system
Disadvantage is badly in need of providing a kind of new waterproof material, to meet the requirement of railway concrete basal plane waterproof layer.
Summary of the invention
It is durable to significantly improve its technical problem to be solved by the invention is to provide a kind of concrete-bridge waterproof coating
Property and Years Of Service, good concrete water-proof effect and easy to use fast can be reached in the case where coating thickness is relatively thin
It is prompt.
The technical solution adopted by the present invention to solve the technical problems is as follows:
A kind of concrete-bridge waterproof coating of the invention is coated on concrete surface, it is characterized in that: the waterproof applies
Seal coat layer, intermediate primer layers and the top coat layer that layer is set gradually outside by inner are compound to be constituted, and seal coat layer is sealed by epoxies
It closes priming paint to coat to be formed, intermediate primer layers are coated by polyurethane intermediate coat and formed, and top coat layer is coated by polyurethane finish and formed.
The polyurethane intermediate coat by A1 component and B1 component flour mixed with adulterants at；
Wherein, the A1 component includes: polyether polyol, filler, coalescing agent, solvent；The B1 component includes: crosslinking
Agent, solvent；
Preferably, according to the mass fraction, the A1 component includes: 40-60 parts of polyether polyol, 13.9-19.9 parts of filler,
0.5-6 parts of coalescing agent, 0.5-18 parts of solvent；
Preferably, according to the mass fraction, the A1 component includes: 60 parts of polyether polyol, 14.9 parts of filler, coalescing agent
2.1 parts, 10 parts of solvent；
Preferably, according to the mass fraction, the B1 component includes: 40-60 parts of crosslinking agent, 0.1-20 parts of solvent；
Preferably, according to the mass fraction, the B1 component includes: 60 parts of crosslinking agent, 20 parts of solvent；
Preferably, the mass ratio of the A1 component and B1 component is 1~5:1, preferably 1~3:1, more preferable 1~2:1.
The polyurethane finish is mixed by A2 component and B2 component；
Wherein, the A2 component includes: polyether polyol, titanium dioxide, filler, coalescing agent, solvent；The B2 group subpackage
Contain: crosslinking agent, solvent；
Preferably, according to the mass fraction, the A2 component includes: 40-60 parts of polyether polyol, is filled out 13-28 parts of titanium dioxide
Expect 13.9-19.9 parts, 0.5-6 parts of coalescing agent, 0.5-18 parts of solvent；
Preferably, according to the mass fraction, the A2 component includes: 60 parts of polyether polyol, 13 parts of titanium dioxide, filler 14.9
Part, 2.1 parts of coalescing agent, 10 parts of solvent；
Preferably, according to the mass fraction, the B2 component includes: 40-60 parts of crosslinking agent, 0.1-20 parts of solvent；
Preferably, according to the mass fraction, the B2 component includes: 60 parts of crosslinking agent, 20 parts of solvent；
Preferably, the mass ratio of the A2 component and B2 component is 1~5:1, preferably 1~3:1, more preferable 1~2:1.
Another technical problem to be solved by this invention is to provide a kind of preparation method of above-mentioned polyurethane intermediate coat, the party
Method includes the following steps:
(1) polyether polyol is placed in container, filler stirring point is sequentially added under 1000-1400 revs/min of stirring
Dissipate 10-20min, preferably 15min, after 1000-1400 revs/min be added with stirring coalescing agent, solvent after continue stirring point
5-15min, preferably 10min are dissipated, is ground, filtering obtains A1 component；
(2) crosslinking agent and solvent are placed in container, 15-30min is stirred under 700-800 revs/min, filtered, obtain
To B1 component；
(3) A1 component and B1 component are mixed.
Another technical problem to be solved by this invention is to provide a kind of preparation method of above-mentioned polyurethane finish, this method
Include the following steps:
(1) polyether polyol is placed in container, titanium dioxide, filler is sequentially added under 1000-1400 revs/min of stirring
Be dispersed with stirring 10-20min, preferably 15min, after 1000-1400 revs/min be added with stirring coalescing agent, solvent after continue
It is dispersed with stirring 5-15min, preferably 10min, is ground, filtering obtains A1 component；
(2) crosslinking agent and solvent are placed in container, 15-30min is stirred under 700-800 revs/min, filtered, obtain
To B2 component；
(3) A2 component and B2 component are mixed.
Another technical problem to be solved by this invention is to provide a kind of construction party of above-mentioned concrete-bridge waterproof coating
Method includes the following steps:
(1) concrete surface processing is clean and after drying, spraying or brush seal coat；
(2) to be sprayed or brush after seal coat 12-36h or after seal coat does solid work, in the seal coat layer of formation
Upper spraying or brushing polyurethane intermediate coat；
(3) to be sprayed or brush after polyurethane intermediate coat 12-36h or after polyurethane intermediate coat does solid work, inspection is formed
Intermediate primer layers in whether have bubble, after then bubble is eliminated if any bubble spray or brush polyurethane finish repair, in
Between paint layer with a thickness of 30-60 μm；；
(4) it sprays on intermediate primer layers or brushes polyurethane finish, after 12-36h or polyurethane intermediate coat does solid work rear shape
At top coat layer, check in top coat layer whether there is bubble, spray or brush after then eliminating bubble if any bubble polyurethane finish into
Row repairing, top coat layer with a thickness of 30-60 μm.
In terms of such as several:
1, polyurethane finish, extension at break are prepared using titanium dioxide, coalescing agent, crosslinking agent, the solvent etc. that suitably match
Rate is increased dramatically；Polyurethane is prepared using polyether polyol, filler, coalescing agent, crosslinking agent, the solvent etc. that suitably match
Intermediate coat, and further use epoxies seal coat, the successively shape from bottom to top on the concrete structures basal plane such as railway, bridge
At seal coat layer, polyurethane intermediate primer layers and polyurethane finish layer, waterproof coating is consequently formed.Waterproof coating has raising
Specific environmental adaptability and ageing-resistant performance, and there is excellent physical and mechanical property, adhesion and ultraviolet radiation performance, it is long
Time use is not in the damage such as discoloration, cracking and peeling, plays the role of high efficient protected concrete.
2, waterproof coating has the function of reflecting sunlight, uses on concrete-bridge outdoors, it is possible to reduce due to sunlight
The temperature rise irradiated and generated reduces the temperature stress of prestressed concrete, reduces bridge structure deformation, to rail smooth degree requirement
For stringent high-speed railway and heavy haul railway, there is preferable stable structure effect.
3, waterproof coating can be coated on concrete-bridge by way of spraying, brushing, and plurality of devices can be used and applied
Work selects suitable construction equipment according to the actual conditions such as factory's coating or field condition coating convenient for staff, is more convenient for
It uses.
Detailed description of the invention
This specification includes such as next width attached drawing:
Fig. 1 is a kind of structural schematic diagram of concrete-bridge waterproof coating of the present invention.
Structure title corresponding to flag activation in figure: on concrete surface A, seal coat layer 10, intermediate primer layers 20, face
Paint layer 30.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Referring to Fig.1, a kind of concrete-bridge waterproof coating of the invention is coated on concrete surface A, the waterproof
Seal coat layer 10 that coating is set gradually outside by inner, intermediate primer layers 20 and top coat layer 30 is compound constitutes.Seal coat layer 10
It is coated and is formed by epoxies seal coat, intermediate primer layers 20 are coated by polyurethane intermediate coat and formed, and top coat layer 30 is by polyurethane face
Paint coating is formed.
The polyurethane intermediate coat by A1 component and B1 component flour mixed with adulterants at.
The A1 component includes: polyether polyol, filler, coalescing agent, solvent；The B1 component includes: crosslinking agent,
Solvent.
Preferably, according to the mass fraction, the A1 component includes: 40-60 parts of polyether polyol, 13.9-19.9 parts of filler,
0.5-6 parts of coalescing agent, 0.5-18 parts of solvent；
Preferably, according to the mass fraction, the A1 component includes: 60 parts of polyether polyol, 14.9 parts of filler, coalescing agent
2.1 parts, 10 parts of solvent；
Preferably, according to the mass fraction, the B1 component includes: 40-60 parts of crosslinking agent, 0.1-20 parts of solvent；
Preferably, according to the mass fraction, the B1 component includes: 60 parts of crosslinking agent, 20 parts of solvent；
Preferably, the mass ratio of the A1 component and B1 component is 1~5:1, preferably 1~3:1, more preferable 1~2:1.
In the A1 component, the polyether polyol be selected from hydroxyl polybutadiene, polytetrahydrofuran diol, polyethers 2000,
One of polyethers 330N and polyethers 4000 or a variety of；Preferred, polyethers 330N and/or polyethers 4000；
Preferably, the filler is selected from one of barium sulfate, talcum powder, carbon black and bentonite or a variety of；
Preferably, the coalescing agent includes one of promotor, defoaming agent, levelling agent and light stabilizer or a variety of；
Preferably, the promotor is acrylic resin modified；
Preferably, the defoaming agent is hydrophobic silicone；
Preferably, the levelling agent is ethylene-ethyl acrylate copolymer and/or modified polyorganosiloxane；
Preferably, the light stabilizer is hindered phenol antioxygen；Preferably, the light stabilizer is 2,6- di-t-butyl-
4- methylphenol；
Preferably, the solvent is selected from one of dimethylbenzene, butyl acetate and ethylene glycol ether acetate or a variety of.
In the B1 component, the crosslinking agent is isocyanates；
Preferably, the isocyanates is selected from methyl diphenylene diisocyanate, hexamethylene diisocyanate and different Buddhist
One or more of your ketone diisocyanate；
Preferably, the solvent is selected from one of dimethylbenzene, butyl acetate and ethylene glycol ether acetate or a variety of.
The polyurethane finish is mixed by A2 component and B2 component.
Wherein, the A2 component includes: polyether polyol, titanium dioxide, filler, coalescing agent, solvent；The B2 group subpackage
Contain: crosslinking agent, solvent；
Preferably, according to the mass fraction, the A2 component includes: 40-60 parts of polyether polyol, is filled out 13-28 parts of titanium dioxide
Expect 13.9-19.9 parts, 0.5-6 parts of coalescing agent, 0.5-18 parts of solvent；
Preferably, according to the mass fraction, the A2 component includes: 60 parts of polyether polyol, 13 parts of titanium dioxide, filler 14.9
Part, 2.1 parts of coalescing agent, 10 parts of solvent；
Preferably, according to the mass fraction, the B2 component includes: 40-60 parts of crosslinking agent, 0.1-20 parts of solvent；
Preferably, according to the mass fraction, the B2 component includes: 60 parts of crosslinking agent, 20 parts of solvent；
Preferably, the mass ratio of the A2 component and B2 component is 1~5:1, preferably 1~3:1, more preferable 1~2:1.
In the A2 component, in the A2 component, the polyether polyol is selected from hydroxyl polybutadiene, polytetrahydrofuran two
One of alcohol, polyethers 2000, polyethers 330N and polyethers 4000 are a variety of；Preferred, polyethers 330N and/or polyethers 4000；
Preferably, the titanium dioxide is Anatase Titanium Dioxide；Preferably, the titanium dioxide be nano TiO 2 titanium dioxide and/
Or nano antimony tin oxide titanium dioxide；
Preferably, the filler in ceramic microbead, glass microballoon, barium sulfate, talcum powder, carbon black and bentonite one
Kind is a variety of；
Preferably, the coalescing agent includes one of promotor, defoaming agent, levelling agent and light stabilizer or a variety of；
Preferably, the promotor is acrylic resin modified；
Preferably, the defoaming agent is hydrophobic silicone；
Preferably, the levelling agent is ethylene-ethyl acrylate copolymer and/or modified polyorganosiloxane；
Preferably, the light stabilizer is hindered phenol antioxygen；Preferably, the light stabilizer is 2,6- di-t-butyl-
4- methylphenol；
Preferably, the solvent is selected from one of dimethylbenzene, butyl acetate and ethylene glycol ether acetate or a variety of.
In the B2 component, the crosslinking agent is isocyanates；
Preferably, the isocyanates is selected from methyl diphenylene diisocyanate, hexamethylene diisocyanate and different Buddhist
One or more of your ketone diisocyanate；
Preferably, the solvent is selected from one of dimethylbenzene, butyl acetate and ethylene glycol ether acetate or a variety of.
A kind of preparation method of the polyurethane intermediate coat of concrete-bridge waterproof coating, includes the following steps:
(1) polyether polyol is placed in container, filler stirring point is sequentially added under 1000-1400 revs/min of stirring
Dissipate 10-20min, preferably 15min, after 1000-1400 revs/min be added with stirring coalescing agent, solvent after continue stirring point
5-15min, preferably 10min are dissipated, is ground, filtering obtains A1 component；
(2) crosslinking agent and solvent are placed in container, 15-30min is stirred under 700-800 revs/min, filtered, obtain
To B1 component；
(3) A1 component and B1 component are mixed.
A kind of preparation method of the polyurethane finish of concrete-bridge waterproof coating, includes the following steps:
(1) polyether polyol is placed in container, titanium dioxide, filler is sequentially added under 1000-1400 revs/min of stirring
Be dispersed with stirring 10-20min, preferably 15min, after 1000-1400 revs/min be added with stirring coalescing agent, solvent after continue
It is dispersed with stirring 5-15min, preferably 10min, is ground, filtering obtains A1 component；
(2) crosslinking agent and solvent are placed in container, 15-30min is stirred under 700-800 revs/min, filtered, obtain
To B2 component；
(3) A2 component and B2 component are mixed.
Referring to Fig.1, a kind of construction method of concrete-bridge waterproof coating of the present invention, includes the following steps:
(1) concrete surface A processing is clean and after drying, spraying or brush seal coat；
(2) to be sprayed or brush after seal coat 12-36h or after seal coat does solid work, in the seal coat layer of formation
Polyurethane intermediate coat is sprayed or brushed on 10；
(3) to be sprayed or brush after polyurethane intermediate coat 12-36h or after polyurethane intermediate coat does solid work, inspection is formed
Intermediate primer layers 20 in whether have bubble, after then bubble is eliminated if any bubble spray or brush polyurethane finish repair,
Intermediate primer layers 20 with a thickness of 30-60 μm；
(4) it sprays on intermediate primer layers 20 or brushes polyurethane finish, after 12-36h or after polyurethane intermediate coat does solid work
Top coat layer 30 is formed, checks in top coat layer 30 whether there is bubble, polyurethane is sprayed or brushed after then eliminating bubble if any bubble
Finishing coat is repaired, top coat layer 30 with a thickness of 30-60 μm.
The intermediate primer layers 20 with a thickness of 30-60 μm；The top coat layer 30 with a thickness of 30-60 μm.
Embodiment 1:
1, the preparation of a kind of concrete-bridge waterproof coating of the present invention and its polyurethane intermediate coat, polyurethane finish
(1) epoxies seal coat uses the product of Langfang threeway chemical industry Co., Ltd.
(2) polyurethane intermediate coat is prepared:
A1 component raw material: 45.7g polyethers 4000,14.3g polyethers 330N, 5.0g talcum powder, 9.35g barium sulfate, 0.05g
Carbon black, 0.5g bentonite, 1.3g is acrylic resin modified, 0.1g hydrophobic silicone, 0.7g ethylene-ethyl acrylate copolymer,
10g ethylene glycol ether acetate；
B1 component raw material: methyl diphenylene diisocyanate 60g (analysis pure 98%, white to faint yellow molten solids),
Ethylene glycol ether acetate 20g；
Preparation method:
Polyethers 4000, polyethers 330N are placed in dispersion tank, sequentially add cunning under 1000-1400 revs/min of stirring condition
Modified propylene is added after then dispersing 15min under 1000-1400 revs/min of stirring condition in mountain flour, barium sulfate, carbon black, bentonite
Acid resin, hydrophobic silicone, ethylene-ethyl acrylate copolymer, ethylene glycol ether acetate, then at 1000-1400 revs/min
It is ground after dispersing 10min under stirring condition using sand mill, filters, obtain A1 component；
Methyl diphenylene diisocyanate, ethylene glycol ether acetate are placed in and converted in batch can, at 700-800 revs/min
Under the conditions of stir 15-30min after, filtering, obtain B1 component；
A1 component and B1 component are mixed to prepare polyurethane intermediate coat.
(3) polyurethane finish is prepared:
A2 component raw material: 45.7g polyethers 4000,14.3g polyethers 330N, 13g Anatase Titanium Dioxide, 5.0g talcum powder,
9.35g barium sulfate, 0.05g carbon black, 0.5g bentonite, 1.3g is acrylic resin modified, 0.1g hydrophobic silicone, 0.7g ethylene-
Ethyl acrylate copolymer, 10g ethylene glycol ether acetate；
B2 component raw material: methyl diphenylene diisocyanate 60g (analysis pure 98%, white to faint yellow molten solids),
Ethylene glycol ether acetate 20g；
Preparation method:
Polyethers 4000, polyethers 330N are placed in dispersion tank, sequentially added under 1000-1400 revs/min of stirring condition sharp
State type titanium dioxide, talcum powder, barium sulfate, carbon black, bentonite, then disperse 15min under 1000-1400 revs/min of stirring condition
After acrylic resin modified, hydrophobic silicone, ethylene-ethyl acrylate copolymer, ethylene glycol ether acetate is added, then exist
It is ground after dispersing 10min under 1000-1400 revs/min of stirring condition using sand mill, filters, obtain A2 component；
Methyl diphenylene diisocyanate, ethylene glycol ether acetate are placed in and converted in batch can, at 700-800 revs/min
Under the conditions of stir 15-30min after, filtering, obtain B2 component；
A2 component and B2 component are mixed to prepare polyurethane finish.
2, the construction method of waterproof coating is for example aforementioned.Seal coat layer 10 with a thickness of concrete surface A is completely covered, gather
Urethane intermediate primer layers 20 with a thickness of 50 μm, polyurethane finish layer 30 with a thickness of 40 μm, thickness is excessive, increases cost, thickness
It is too small, it is unfavorable for the mechanical property and endurance quality of film forming coatings.
3,30 performance test of polyurethane intermediate primer layers 20 and polyurethane finish layer
It is as shown in table 1 that performance carries out test result:
Table 1: 1 polyurethane intermediate primer layers of embodiment and polyurethane finish layer the performance test results
Polyurethane intermediate primer layers 20 and polyurethane finish layer 30 have in the present invention it can be seen from the content of the above table 1
There is the resistance to artificial acceleration of good workability, mechanical property and high/low temperature stability, especially polyurethane finish layer 30 old
Change the military service durability that can guarantee concrete-bridge waterproof coating of the present invention up to 5000h or more, sun reflectivity 95% and mixes
Solidifying soil component temperature rise/temperature deformation.
Embodiment 2:
1, the preparation of a kind of concrete-bridge waterproof coating of the present invention and its polyurethane intermediate coat, polyurethane finish
(1) epoxies seal coat uses the product of Langfang threeway chemical industry Co., Ltd.
(2) polyurethane intermediate coat:
A1 component raw material: 30.5g polyethers 4000,9.5g polyethers 330N, 14.35g barium sulfate, 0.05g carbon black, 0.5g are swollen
Profit soil, 1.3g is acrylic resin modified, 0.1g hydrophobic silicone, 0.7g ethylene-ethyl acrylate copolymer, 10g ethylene glycol ethyl ethers
Ether acetate；
B1 component raw material: methyl diphenylene diisocyanate 48g (analysis pure 98%, white to faint yellow molten solids),
Dimethylbenzene 12.0g；
Preparation method:
Polyethers 4000, polyethers 330N are placed in dispersion tank, sequentially add sulphur under 1000-1400 revs/min of stirring condition
Sour barium, carbon black, bentonite, then under 1000-1400 revs/min of stirring condition disperse 15min after be added it is acrylic resin modified,
Hydrophobic silicone, ethylene-ethyl acrylate copolymer, ethylene glycol ether acetate, then in 1000-1400 revs/min of stirring bar
It is ground after dispersing 10min under part using sand mill, filters, obtain A1 component；
Methyl diphenylene diisocyanate, dimethylbenzene are placed in and converted in batch can, is stirred under conditions of 700-800 revs/min
After 15-30min, filtering obtains B1 component；
A1 component and B1 component are mixed to prepare polyurethane intermediate coat.
(3) polyurethane finish is prepared:
A2 component raw material: 30.5g polyethers 4000,9.5g polyethers 330N, 28g Anatase Titanium Dioxide, 5.0g ceramic microbead,
14.35g barium sulfate, 0.05g carbon black, 0.5g bentonite, 1.3g is acrylic resin modified, 0.1g hydrophobic silicone, 0.7g ethylene-
Ethyl acrylate copolymer, 10g ethylene glycol ether acetate；
B2 component raw material: methyl diphenylene diisocyanate 48g (analysis pure 98%, white to faint yellow molten solids),
Dimethylbenzene 12.0g；
Preparation method:
Polyethers 4000, polyethers 330N are placed in dispersion tank, sequentially added under 1000-1400 revs/min of stirring condition sharp
State type titanium dioxide, ceramic microbead, barium sulfate, carbon black, bentonite, then disperse under 1000-1400 revs/min of stirring condition
Acrylic resin modified, hydrophobic silicone, ethylene-ethyl acrylate copolymer, ethylene glycol ether acetate are added after 15min,
It is ground after then dispersing 10min under 1000-1400 revs/min of stirring condition using sand mill, filters, obtain A2 component；
Methyl diphenylene diisocyanate, dimethylbenzene are placed in and converted in batch can, is stirred under conditions of 700-800 revs/min
After 15-30min, filtering obtains B2 component；
A2 component and B2 component are mixed to prepare polyurethane finish.
2, the construction method of waterproof coating is for example aforementioned.Seal coat layer 10 with a thickness of concrete surface A is completely covered, gather
Urethane intermediate primer layers 20 with a thickness of 50 μm, polyurethane finish layer 30 with a thickness of 40 μm.
3,30 performance test of polyurethane intermediate primer layers 20 and polyurethane finish layer
The performance test results are as shown in table 2:
Table 2: 2 polyurethane intermediate primer layers of embodiment and polyurethane finish layer the performance test results
Polyurethane intermediate primer layers 20 and polyurethane finish layer 30 all have good application property it can be seen from 2 content of table
Can, the resistance to artificial accelerated aging of mechanical property and high/low temperature stability, especially polyurethane finish layer up to 4500h or more,
Sun reflectivity 92% can guarantee the military service durability and concrete component temperature rise/temperature deformation of concrete-bridge waterproof coating.
Embodiment 3:
1, the preparation of a kind of concrete-bridge waterproof coating of the present invention and its polyurethane intermediate coat, polyurethane finish
(1) epoxies seal coat uses the product of Langfang threeway chemical industry Co., Ltd.
(2) polyurethane intermediate coat:
A1 component raw material: 38g polyethers 4000,12g polyethers 330N, 5.0g talcum powder, 8.35g barium sulfate, 0.05g carbon black,
0.5g bentonite, 1.3g is acrylic resin modified, 0.1g hydrophobic silicone, 0.7g ethylene-ethyl acrylate copolymer, 10g second
Glycol ether acetate；
B1 component raw material: methyl diphenylene diisocyanate 53g (analysis pure 98%, white to faint yellow molten solids),
Ethylene glycol ether acetate 18g；
Preparation method:
Polyethers 4000, polyethers 330N are placed in dispersion tank, sequentially added under 1000-1400 revs/min of stirring condition sharp
State type titanium dioxide, talcum powder, barium sulfate, carbon black, bentonite, then disperse 15min under 1000-1400 revs/min of stirring condition
After acrylic resin modified, hydrophobic silicone, ethylene-ethyl acrylate copolymer, ethylene glycol ether acetate is added, then exist
It is ground after dispersing 10min under 1000-1400 revs/min of stirring condition using sand mill, filters, obtain A1 component；
Methyl diphenylene diisocyanate, ethylene glycol ether acetate are placed in and converted in batch can, at 700-800 revs/min
Under the conditions of stir 15-30min after, filtering, obtain B1 component；
A1 component and B1 component are mixed to prepare polyurethane intermediate coat.
(3) polyurethane finish is prepared:
A2 component raw material: 38g polyethers 4000,12g polyethers 330N, 24g Anatase Titanium Dioxide, 5.0g talcum powder, 8.35g
Barium sulfate, 0.05g carbon black, 0.5g bentonite, 1.3g is acrylic resin modified, 0.1g hydrophobic silicone, 0.7g ethylene-acrylic acid
Methacrylate copolymers, 10g ethylene glycol ether acetate；
B2 component raw material: methyl diphenylene diisocyanate 53g (analysis pure 98%, white to faint yellow molten solids),
Ethylene glycol ether acetate 18g；
Preparation method:
Polyethers 4000, polyethers 330N are placed in dispersion tank, sequentially added under 1000-1400 revs/min of stirring condition sharp
State type titanium dioxide, talcum powder, barium sulfate, carbon black, bentonite, then disperse 15min under 1000-1400 revs/min of stirring condition
After acrylic resin modified, hydrophobic silicone, ethylene-ethyl acrylate copolymer, ethylene glycol ether acetate is added, then exist
It is ground after dispersing 10min under 1000-1400 revs/min of stirring condition using sand mill, filters, obtain A2 component；
Methyl diphenylene diisocyanate, ethylene glycol ether acetate are placed in and converted in batch can, at 700-800 revs/min
Under the conditions of stir 15-30min after, filtering, obtain B2 component；
A2 component and B2 component are mixed to prepare polyurethane finish.
2, the construction method of waterproof coating is for example aforementioned.Seal coat layer 10 with a thickness of concrete surface A is completely covered, gather
Urethane intermediate primer layers 20 with a thickness of 50 μm, polyurethane finish layer 30 with a thickness of 40 μm.
3,30 performance test of polyurethane intermediate primer layers 20 and polyurethane finish layer
Test result is as shown in table 3:
Table 3: 3 polyurethane intermediate primer layers of embodiment and polyurethane finish layer the performance test results
Polyurethane intermediate primer layers and polyurethane finish layer of the present invention all have good it can be seen from 3 content of table
The resistance to artificial accelerated aging of workability, mechanical property and high/low temperature stability, especially polyurethane finish layer is up to 5000h
Above, sun reflectivity 95% can guarantee the military service durability and concrete structure of concrete-bridge waterproof coating of the present invention
Part temperature rise/temperature deformation.
Find out from above-mentioned table 1-3, the waterproof coating of 1-3 of the embodiment of the present invention all has good working life, stretches by force
Degree, elongation at break and adhesive force, and there is excellent impermeability, ultraviolet aging resistance.
The practical adhesive force of concrete-bridge waterproof coating of the present invention is tested:
According to GB5210-2006, by be applied to be completed using the waterproof coating of Example 1 and Example 2 of the present invention
Railway Concrete Bridge surface carries out practical adhesive force to its waterproof coating and tests, and test obtains embodiment 1, embodiment 2 is prevented
Adhesive force of the water coating on built Railway Concrete Bridge surface is respectively 5.09MPa and 3.52MPa, it is indicated above that
Concrete-bridge waterproof coating of the invention has excellent adhesion strength with concrete surface in actual use.
The practical weatherability of concrete-bridge waterproof coating of the present invention is tested:
The waterproof coating of the embodiment of the present invention 1 is applied to be completed Railway Concrete Bridge surface, is being used 36 months
Substantially unchanged afterwards, phenomena such as not occurring discoloration, cracking and peel off.Thus illustrate, concrete-bridge waterproof coating of the present invention exists
There is excellent weatherability and the adhesion with concrete surface in actual use.
Compared with other waterproof coatings:
Referring to the method for embodiment 1-3, divide according to each component as shown in Table 4 below together with epoxies seal coat
Not Shi Gong waterproof coating 4-6 of the present invention and comparison waterproof coating 1-4, and carry out effect comparison.
Table 4: the comparison of waterproof coating 4-6 and comparison waterproof coating 1-4 of the invention
Each performance indicator mainly compares 4 in table 4: low temperature flexibility (- 40 DEG C), adhesive force, resistance to artificial accelerated aging and too
Positive reflectivity.Low temperature flexibility is tested in -40 DEG C of environment according to GB/T 6742-2007 test method, and smaller characterization coating is worth
To adaptable (minimum value is 2mm) of northern China or extremely frigid zones environment；Adhesive force according to GB/T 5210-2006 examination
The test of proved recipe method, value is bigger to characterize coating system and the globality of concrete surface is better；Resistance to artificial accelerated aging according to
The test method of GB/T14522-2008 carries out, respectively 800h, 1000h, 2000h, 2500h, 3000h, 4000h, 5000h,
Sample aging conditions are observed when 6000h, the time aging ability of the longer characterization resistance to outdoor environment of coating system is stronger, is beneficial to increase
Add the durability of bridge；Sun reflectivity is tested according to the test method of JGJ/T 287-2014, and value is bigger, shows coating to sun
The reflection of light is stronger, so that the caloric receptivity of coating and concrete-bridge is smaller, coating-bridge system temperature rise, the temperature difference and its temperature
Difference deformation is also smaller, is more advantageous to the volume stability and durability of bridge.
Table 4 shows that the properties of concrete-bridge waterproof coating 4-6 of the present invention are all significantly better than comparison waterproof coating 1-
4, especially resistance to artificial accelerated aging, sun reflectivity are very prominent, effectively can carry out durability and structure to concrete-bridge
Stability protection.
The above is some principles of the invention that explain through diagrams, and is not intended to for the present invention to be confined to shown and institute
In the specific structure and the scope of application stated, therefore all corresponding modifications that may be utilized and equivalent, belong to this hair
Bright applied the scope of the patents.
Claims (10)
1. a kind of concrete-bridge waterproof coating is coated on concrete surface (A), it is characterized in that: the waterproof coating is by inner
And seal coat layer (10), intermediate primer layers (20) and top coat layer (30) the compound composition set gradually outside, seal coat layer (10)
It is coated and is formed by epoxies seal coat, intermediate primer layers (20) are coated by polyurethane intermediate coat to be formed, and top coat layer (30) is by poly- ammonia
Ester finishing coat coats to be formed.
2. a kind of concrete-bridge waterproof coating as described in claim 1, it is characterized in that: the polyurethane intermediate coat is by A1 component
With B1 component flour mixed with adulterants at；
Wherein, the A1 component includes: polyether polyol, filler, coalescing agent, solvent；The B1 component includes: crosslinking agent,
Solvent；
Preferably, according to the mass fraction, the A1 component includes: 40-60 parts of polyether polyol, 13.9-19.9 parts of filler, film forming
0.5-6 parts of auxiliary agent, 0.5-18 parts of solvent；
Preferably, according to the mass fraction, the A1 component includes: 60 parts of polyether polyol, 14.9 parts of filler, coalescing agent 2.1
Part, 10 parts of solvent；
Preferably, according to the mass fraction, the B1 component includes: 40-60 parts of crosslinking agent, 0.1-20 parts of solvent；
Preferably, according to the mass fraction, the B1 component includes: 60 parts of crosslinking agent, 20 parts of solvent；
Preferably, the mass ratio of the A1 component and B1 component is 1~5:1, preferably 1~3:1, more preferable 1~2:1.
3. a kind of concrete-bridge waterproof coating as claimed in claim 2, it is characterized in that: the polyethers is more in the A1 component
First alcohol is selected from one of hydroxyl polybutadiene, polytetrahydrofuran diol, polyethers 2000, polyethers 330N and polyethers 4000 or more
Kind；Preferred, polyethers 330N and/or polyethers 4000；
Preferably, the filler is selected from one of barium sulfate, talcum powder, carbon black and bentonite or a variety of；
Preferably, the coalescing agent includes one of promotor, defoaming agent, levelling agent and light stabilizer or a variety of；
Preferably, the promotor is acrylic resin modified；
Preferably, the defoaming agent is hydrophobic silicone；
Preferably, the levelling agent is ethylene-ethyl acrylate copolymer and/or modified polyorganosiloxane；
Preferably, the light stabilizer is hindered phenol antioxygen；Preferably, the light stabilizer is 2,6- di-t-butyl -4- first
Base phenol；
Preferably, the solvent is selected from one of dimethylbenzene, butyl acetate and ethylene glycol ether acetate or a variety of.
4. a kind of concrete-bridge waterproof coating as claimed in claim 2, it is characterized in that: in the B1 component, the crosslinking agent
For isocyanates；
Preferably, the isocyanates is selected from methyl diphenylene diisocyanate, hexamethylene diisocyanate and isophorone
One or more of diisocyanate；
Preferably, the solvent is selected from one of dimethylbenzene, butyl acetate and ethylene glycol ether acetate or a variety of.
5. a kind of concrete-bridge waterproof coating as claimed in claim 2, it is characterized in that: the polyurethane finish by A2 component and
B2 component mixes；
Wherein, the A2 component includes: polyether polyol, titanium dioxide, filler, coalescing agent, solvent；The B2 component includes:
Crosslinking agent, solvent；
Preferably, according to the mass fraction, the A2 component includes: 40-60 parts of polyether polyol, 13-28 parts of titanium dioxide, filler
13.9-19.9 parts, 0.5-6 parts of coalescing agent, 0.5-18 parts of solvent；
Preferably, according to the mass fraction, the A2 component includes: 60 parts of polyether polyol, 13 parts of titanium dioxide, 14.9 parts of filler,
2.1 parts of coalescing agent, 10 parts of solvent；
Preferably, according to the mass fraction, the B2 component includes: 40-60 parts of crosslinking agent, 0.1-20 parts of solvent；
Preferably, according to the mass fraction, the B2 component includes: 60 parts of crosslinking agent, 20 parts of solvent；
Preferably, the mass ratio of the A2 component and B2 component is 1~5:1, preferably 1~3:1, more preferable 1~2:1.
6. concrete-bridge waterproof coating as described in any of claims 5, it is characterized in that: in the A2 component, it is described
In A2 component, the polyether polyol is selected from hydroxyl polybutadiene, polytetrahydrofuran diol, polyethers 2000, polyethers 330N and gathers
One of ether 4000 is a variety of；Preferred, polyethers 330N and/or polyethers 4000；
Preferably, the titanium dioxide is Anatase Titanium Dioxide；Preferably, the titanium dioxide is nano TiO 2 titanium dioxide and/or receives
Rice tin-antiomony oxide titanium dioxide；
Preferably, the filler be selected from one of ceramic microbead, glass microballoon, barium sulfate, talcum powder, carbon black and bentonite or
It is a variety of；
Preferably, the coalescing agent includes one of promotor, defoaming agent, levelling agent and light stabilizer or a variety of；
Preferably, the promotor is acrylic resin modified；
Preferably, the defoaming agent is hydrophobic silicone；
Preferably, the levelling agent is ethylene-ethyl acrylate copolymer and/or modified polyorganosiloxane；
Preferably, the light stabilizer is hindered phenol antioxygen；Preferably, the light stabilizer is 2,6- di-t-butyl -4- first
Base phenol；
Preferably, the solvent is selected from one of dimethylbenzene, butyl acetate and ethylene glycol ether acetate or a variety of.
7. concrete-bridge waterproof coating as claimed in claim 6, it is characterized in that: in the B2 component, the crosslinking agent is
Isocyanates；
Preferably, the isocyanates is selected from methyl diphenylene diisocyanate, hexamethylene diisocyanate and isophorone
One or more of diisocyanate；
Preferably, the solvent is selected from one of dimethylbenzene, butyl acetate and ethylene glycol ether acetate or a variety of.
8. a kind of preparation side of the polyurethane intermediate coat of concrete-bridge waterproof coating as described in claim 2 to 4 any one
Method includes the following steps:
(1) polyether polyol is placed in container, sequentially adds filler under 1000-1400 revs/min of stirring and is dispersed with stirring 10-
20min, preferably 15min, after 1000-1400 revs/min be added with stirring coalescing agent, solvent after continue to be dispersed with stirring 5-
15min, preferably 10min are ground, and filtering obtains A1 component；
(2) crosslinking agent and solvent are placed in container, 15-30min is stirred under 700-800 revs/min, filtered, obtain B1
Component；
(3) A1 component and B1 component are mixed.
9. a kind of preparation method of the polyurethane finish of concrete-bridge waterproof coating as described in claim 5 to 7 any one,
Include the following steps:
(1) polyether polyol is placed in container, titanium dioxide, filler stirring is sequentially added under 1000-1400 revs/min of stirring
Disperse 10-20min, preferably 15min, after 1000-1400 revs/min be added with stirring coalescing agent, solvent after continue to stir
Disperse 5-15min, preferably 10min, grind, filtering obtains A1 component；
(2) crosslinking agent and solvent are placed in container, 15-30min is stirred under 700-800 revs/min, filtered, obtain B2
Component；
(3) A2 component and B2 component are mixed.
10. a kind of construction method of concrete-bridge waterproof coating as described in claim 1 to 7 any one, including walk as follows
It is rapid:
(1) concrete surface surface treatment is clean and after drying, spraying or brush seal coat；
(2) to be sprayed or brush after seal coat 12-36h or after seal coat does solid work, in the seal coat layer (10) of formation
Upper spraying or brushing polyurethane intermediate coat；
(3) to be sprayed or brush after polyurethane intermediate coat 12-36h or after polyurethane intermediate coat does solid work, during inspection is formed by
Between whether have bubble in paint layer (20), polyurethane finish is sprayed or brushed after then eliminating bubble if any bubble and is repaired, in
Between paint layer (20) with a thickness of 30-60 μm；
(4) it sprays on intermediate primer layers (20) or brushes polyurethane finish, after 12-36h or polyurethane intermediate coat does solid work rear shape
At top coat layer (30), checks in top coat layer (30) whether there is bubble, spray or brush poly- ammonia after then eliminating bubble if any bubble
Ester finishing coat is repaired, top coat layer (30) with a thickness of 30-60 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810982667.4A CN109354998A (en) | 2018-08-27 | 2018-08-27 | A kind of preparation method of concrete-bridge waterproof coating and its construction method and polyurethane intermediate coat, polyurethane finish |
Applications Claiming Priority (1)
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| CN109928776A (en) * | 2019-03-21 | 2019-06-25 | 徐州工程学院 | A kind of coating production obstructing Chloride Attack Marine Reinforced Concrete Structures |
| CN110229598A (en) * | 2019-03-29 | 2019-09-13 | 东南大学 | Cool down coating and its preparation method and application |
| CN113249019A (en) * | 2021-04-30 | 2021-08-13 | 上海豫宏（金湖）防水科技有限公司 | High-performance II-type waterborne polyurethane waterproof coating and preparation method thereof |
| CN113265172A (en) * | 2021-05-27 | 2021-08-17 | 黄河水利委员会黄河水利科学研究院 | Wear-resistant super-hydrophobic waterproof coating and preparation method thereof |
| CN113861817A (en) * | 2021-11-09 | 2021-12-31 | 烟台恒诺新材料有限公司 | Oily ultraviolet-resistant corrosion-resistant anti-drop coating material and preparation method thereof |
| CN114163901A (en) * | 2021-12-15 | 2022-03-11 | 上铁芜湖高新材料技术有限公司 | Epoxy polyurethane composite waterproof material for high-speed rail bridge and construction method thereof |
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