CN115948084A - Concrete self-cleaning organic-inorganic hybrid waterproof coating and preparation method thereof - Google Patents
Concrete self-cleaning organic-inorganic hybrid waterproof coating and preparation method thereof Download PDFInfo
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- CN115948084A CN115948084A CN202310104671.1A CN202310104671A CN115948084A CN 115948084 A CN115948084 A CN 115948084A CN 202310104671 A CN202310104671 A CN 202310104671A CN 115948084 A CN115948084 A CN 115948084A
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- 238000000576 coating method Methods 0.000 title claims abstract description 53
- 239000011248 coating agent Substances 0.000 title claims abstract description 51
- 239000004567 concrete Substances 0.000 title claims abstract description 38
- 238000004140 cleaning Methods 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 53
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000839 emulsion Substances 0.000 claims abstract description 21
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 21
- 239000010703 silicon Substances 0.000 claims abstract description 21
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 18
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 16
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 11
- 239000003973 paint Substances 0.000 claims abstract description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-L Phosphate ion(2-) Chemical compound OP([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-L 0.000 claims abstract description 9
- 239000008367 deionised water Substances 0.000 claims abstract description 9
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 9
- 239000011780 sodium chloride Substances 0.000 claims abstract description 9
- 239000002250 absorbent Substances 0.000 claims abstract description 7
- 230000002745 absorbent Effects 0.000 claims abstract description 7
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910000077 silane Inorganic materials 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 73
- 238000003756 stirring Methods 0.000 claims description 26
- 238000001556 precipitation Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- 150000001282 organosilanes Chemical class 0.000 claims description 11
- 239000004111 Potassium silicate Substances 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 235000019353 potassium silicate Nutrition 0.000 claims description 8
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 8
- OTARVPUIYXHRRB-UHFFFAOYSA-N diethoxy-methyl-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](C)(OCC)CCCOCC1CO1 OTARVPUIYXHRRB-UHFFFAOYSA-N 0.000 claims description 7
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 6
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims description 6
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 claims description 6
- 239000004115 Sodium Silicate Substances 0.000 claims description 5
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 4
- AMTWCFIAVKBGOD-UHFFFAOYSA-N dioxosilane;methoxy-dimethyl-trimethylsilyloxysilane Chemical compound O=[Si]=O.CO[Si](C)(C)O[Si](C)(C)C AMTWCFIAVKBGOD-UHFFFAOYSA-N 0.000 claims description 4
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims description 4
- 229920001843 polymethylhydrosiloxane Polymers 0.000 claims description 4
- 229940083037 simethicone Drugs 0.000 claims description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 4
- 235000011152 sodium sulphate Nutrition 0.000 claims description 4
- XYRAEZLPSATLHH-UHFFFAOYSA-N trisodium methoxy(trioxido)silane Chemical compound [Na+].[Na+].[Na+].CO[Si]([O-])([O-])[O-] XYRAEZLPSATLHH-UHFFFAOYSA-N 0.000 claims description 4
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 4
- 229960001763 zinc sulfate Drugs 0.000 claims description 4
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 4
- 239000012965 benzophenone Substances 0.000 claims description 3
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 3
- 239000012964 benzotriazole Substances 0.000 claims description 3
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims description 3
- 235000019796 monopotassium phosphate Nutrition 0.000 claims description 3
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims description 3
- 235000019799 monosodium phosphate Nutrition 0.000 claims description 3
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 3
- 150000008366 benzophenones Chemical class 0.000 claims description 2
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 claims description 2
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 2
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 2
- 235000011151 potassium sulphates Nutrition 0.000 claims description 2
- XTIIITNXEHRMQL-UHFFFAOYSA-N tripotassium methoxy(trioxido)silane Chemical compound [K+].[K+].[K+].CO[Si]([O-])([O-])[O-] XTIIITNXEHRMQL-UHFFFAOYSA-N 0.000 claims description 2
- 150000003873 salicylate salts Chemical class 0.000 claims 1
- 150000003918 triazines Chemical class 0.000 claims 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims 1
- 239000004568 cement Substances 0.000 abstract description 31
- 230000000694 effects Effects 0.000 abstract description 13
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000003763 carbonization Methods 0.000 abstract description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 239000012855 volatile organic compound Substances 0.000 abstract 2
- 238000012360 testing method Methods 0.000 description 29
- 239000002585 base Substances 0.000 description 10
- 239000000047 product Substances 0.000 description 10
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 9
- 235000011121 sodium hydroxide Nutrition 0.000 description 8
- 230000003068 static effect Effects 0.000 description 8
- 239000000758 substrate Substances 0.000 description 8
- 238000002441 X-ray diffraction Methods 0.000 description 7
- 229910001424 calcium ion Inorganic materials 0.000 description 7
- 230000002209 hydrophobic effect Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 6
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000036571 hydration Effects 0.000 description 5
- 238000006703 hydration reaction Methods 0.000 description 5
- 238000005303 weighing Methods 0.000 description 5
- 239000011083 cement mortar Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 229910001653 ettringite Inorganic materials 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 239000005871 repellent Substances 0.000 description 3
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910002808 Si–O–Si Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 description 2
- 239000000378 calcium silicate Substances 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002178 crystalline material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000019700 dicalcium phosphate Nutrition 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- BHGADZKHWXCHKX-UHFFFAOYSA-N methane;potassium Chemical compound C.[K] BHGADZKHWXCHKX-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 2
- 229960001860 salicylate Drugs 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 description 1
- KEZYHIPQRGTUDU-UHFFFAOYSA-N 2-[dithiocarboxy(methyl)amino]acetic acid Chemical compound SC(=S)N(C)CC(O)=O KEZYHIPQRGTUDU-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 239000004890 Hydrophobing Agent Substances 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052934 alunite Inorganic materials 0.000 description 1
- 239000010424 alunite Substances 0.000 description 1
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012496 blank sample Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- XAAHAAMILDNBPS-UHFFFAOYSA-L calcium hydrogenphosphate dihydrate Chemical compound O.O.[Ca+2].OP([O-])([O-])=O XAAHAAMILDNBPS-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- -1 hydrogen phosphate anions Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052909 inorganic silicate Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 description 1
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000176 sodium gluconate Substances 0.000 description 1
- 235000012207 sodium gluconate Nutrition 0.000 description 1
- 229940005574 sodium gluconate Drugs 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- KPZTWMNLAFDTGF-UHFFFAOYSA-D trialuminum;potassium;hexahydroxide;disulfate Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Al+3].[Al+3].[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O KPZTWMNLAFDTGF-UHFFFAOYSA-D 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Paints Or Removers (AREA)
Abstract
The invention discloses a concrete self-cleaning organic-inorganic hybrid waterproof coating and a preparation method thereof, wherein the coating comprises 18.4-35.7% of deionized water, 33.5-46.9% of acrylic emulsion, 0.0067-0.0134% of sodium chloride, 0.0134-0.0268% of sodium hydroxide, 0.067-0.134% of water-soluble sulfate, 0.067-0.134% of water-soluble hydrogen phosphate, 1.3-2.7% of organic silicon solution, 1.2-6.8% of organic silane, 20.0-33.5% of inorganic silicon solution and 0.067-0.14% of ultraviolet absorbent. The paint has excellent physical and mechanical properties, impermeability and hydrophobicity, and does not damage the mechanical properties of the base material; the coating formed by coating the coating on the cement concrete base material has good transparency, certain flexibility and strong adhesion with the concrete base material, and can keep the appearance of a building when in use; meanwhile, the paint is simple to prepare, high in flowability and free of VOC (volatile organic compounds), can be manually coated, can be widely applied to building external walls, balconies, basements, cement-based curing fishponds, concrete bridges and the like, and provides long-term protection effects of water resistance, carbonization resistance, chloride ion corrosion resistance and the like for buildings.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a concrete self-cleaning organic-inorganic hybrid waterproof coating and a preparation method thereof.
Background
It is well known that concrete is the most widely used inorganic non-metallic type of building material for human beings. Currently, with the rapid and continuous development of Chinese economy, concrete structures are widely applied in various fields such as buildings, traffic, water conservancy, agriculture, electric power and the like due to the advantages of high strength, easy construction, convenient material taking, strong shape adaptability and the like. However, due to the influence of various environmental factors, even if the structural design is reasonable and the construction is correct, the concrete is often degraded in service, one important degradation factor is water, and the presence of the water makes carbon dioxide more easily enter the concrete to be carbonized, and steel bar corrosion, sulfate corrosion and the like can be caused. These corrosive effects can cause leakage problems, which affect the durability of the structure, reduce the service life of the structure, increase maintenance costs, and even endanger the property and life safety of people, and thus water resistance is imperative. The existing waterproof materials have the defects of different degrees, the toughness of the organic materials is excellent, but the existing waterproof materials have the defects of poor aging resistance, low strength and the like; however, inorganic materials have a problem of poor brittleness although they have good aging resistance.
The patent with the application number of CN202111198564.7 discloses an inorganic aqueous permeable crystallization type waterproof material, and a preparation method and a use method thereof, wherein the main components of the waterproof material are silicate, carbonate, caustic soda, activated alumina, aqueous siloxane, tartaric acid, sodium gluconate, activated silica, volcanic ash, bentonite, a catalyst, an auxiliary agent and distilled water. The waterproof agent can permeate into concrete, silicate and calcium ions in cement generate chemical reaction to generate C-S-H gel, the cement and sand are adhered together, and micropores and capillary channels are blocked. However, the amount of calcium ions in the cement is limited and the gel produced is also limited. And the patent does not describe the performance effect of the product specifically, the waterproof effect is unknown, and the material can only block fine pores. In our patent, not only inorganic silicate solution reacts with calcium ions to generate C-S-H gel, but also two inorganic active components can react with calcium hydroxide in cement to generate crystalline substances such as water-insoluble ettringite and calcium hydrophosphate, and the more crystalline substances, the better the plugging effect. The patent with the application number of CN201710047477.9 discloses a preparation method of a cement-based permeable crystalline material, the waterproofing agent mainly utilizes sodium metasilicate pentahydrate to react with calcium chloride and calcium and magnesium ions in cement to generate silicic acid gel, so that waterproofing and leakage stoppage are realized, but the material only contains rigid aggregates such as portland cement, quartz sand, fly ash and the like, and the problems of low flexibility, high brittleness, poor mechanical property and the like of the traditional cement-based permeable crystalline material are still not solved, so that the concrete is still easy to crack and the like, and the service life is not obviously prolonged. The patent with the application number of CN202210084152.9 discloses a high-water-resistance polyurethane waterproof coating and a preparation method thereof, and the waterproof coating has good water resistance, improves the adhesion between the polyurethane waterproof coating and a wet base surface, and is safe and environment-friendly. But the paint has complex preparation process, is AB component and is more inconvenient to construct.
In summary, the prior art has the following drawbacks: (1) The inorganic waterproof material has unknown penetration depth, limited waterproof effect, high brittleness and poor mechanical property. (2) The organic waterproof material has the advantages of complex preparation process, inconvenient construction, unfriendly environment and poor aging resistance.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to solve the technical problem of providing a waterproof coating which has good impermeability, good cement concrete carbonization resistance and excellent comprehensive mechanical property and a preparation method thereof aiming at the defects of the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a concrete self-cleaning organic-inorganic hybrid waterproof coating comprises the following components in percentage by mass:
18.4 to 35.7 percent of deionized water, 33.5 to 46.9 percent of acrylic emulsion, 0.0067 to 0.0134 percent of sodium chloride, 0.0134 to 0.0268 percent of sodium hydroxide, 0.067 to 0.134 percent of water-soluble sulfate, 0.067 to 0.134 percent of water-soluble hydrogen phosphate, 1.3 to 2.7 percent of organic silicon solution, 1.2 to 6.8 percent of organic silane, 20.0 to 33.5 percent of inorganic silicon solution and 0.067 to 0.14 percent of ultraviolet absorbent.
Specifically, the acrylic emulsion is selected from any one or a combination of more than two of pure acrylic emulsion, silicone acrylic emulsion and styrene acrylic emulsion.
Specifically, the water-soluble sulfate is selected from any one or a combination of more than two of sodium sulfate, potassium sulfate and zinc sulfate.
Specifically, the water-soluble hydrogen phosphate is selected from one or a combination of more than two of sodium dihydrogen phosphate, disodium hydrogen phosphate, potassium dihydrogen phosphate and dipotassium hydrogen phosphate.
Specifically, the organic silicon solution is selected from one or two of a sodium methylsilicate aqueous solution and a potassium methylsilicate aqueous solution; the mass concentration of the organic silicon solution is 30-50%.
Specifically, the inorganic silicon solution is selected from one or two of sodium silicate aqueous solution and potassium silicate aqueous solution; the mass concentration of the inorganic silicon solution is 20-45%.
Specifically, the organosilane is selected from the combination of any two or more of simethicone, polymethylhydrosiloxane, gamma-glycidoxypropyltrimethoxysilane and 3-glycidoxypropylmethyldiethoxysilane; the mass concentration of organosilane is more than 95%.
Specifically, the ultraviolet absorbent is selected from any one or a combination of more than two of benzophenones, benzotriazole, salicylate and triazine.
The self-cleaning organic-inorganic hybrid waterproof material for concrete is uniformly distributed on the surface of the concrete by applying or spraying and other construction modes, wherein a part of inorganic water-soluble active components, namely anions in silicate solution, sulfate solution and hydrogen phosphate, permeate into the concrete and continuously react with cations such as calcium ions and the like dissolved out from the concrete to form water-insoluble slightly soluble or insoluble crystalline substances such as calcium silicate hydrate, ettringite, calcium hydrogen phosphate and the like to block capillary channels, so that the compactness and the waterproof performance of a matrix are improved. The ion reaction equation is as follows:
3CaO·Al 2 O 3 +3Ca 2+ +3SO 4 2- +32H 2 O＝3CaO·Al 2 O 3 ·3CaSO 4 ·32H 2 O↓
the other part of inorganic film-forming components and organic components form a compact flexible coating film with hydrophobic property on the surface, and the principle is as follows:
hydrolysis of the organosilane to form a silanol, wherein R represents an organic group (exemplified by 3-glycidoxypropylmethyldiethoxysilane)
RSi(OCH 2 CH 3 ) 3 +3H 2 O→RSi(OH) 3 +3CH 3 CH 2 OH
1) Condensation of silanol and silanol to form oligomer
2) Hydrolysis of a silicate solution to form silicon-hydroxyl bonds, wherein M represents an alkali metal element
3) The hydroxyl in the oligomer is connected with the hydroxyl in the silicate to form Si-O-Si bond
4) The organic R group in the oligomer is linked with acrylic emulsion (styrene-acrylic is taken as an example)
5) Acrylic emulsion crosslinking (styrene-acrylic is an example)
Thereby forming a flexible hydrophobic coating film to prevent water from entering. The organic film forming component and the inorganic active component act together, so that the double-effect waterproof and leakage stoppage of the matrix is effectively realized, the permeability resistance of the matrix is obviously improved, and the service life of a concrete building is prolonged.
In the above equation, n and X are both numerical parameters, and those skilled in the art can select n and X according to specific needs.
Further, the invention also claims a preparation method of the concrete self-cleaning organic-inorganic hybrid waterproof coating, which comprises the following steps:
(1) Mixing deionized water, sodium chloride, sodium hydroxide, water-soluble sulfate and water-soluble hydrogen phosphate, fully stirring the solution, then sequentially adding an organic silicon solution and an inorganic silicon solution, uniformly mixing, and stirring until the solution is clear to obtain a solution A;
(2) Slowly adding organosilane into the acrylic emulsion in a stirring state, and fully stirring until the solution is free of precipitation and layering to obtain a solution B;
(3) And (3) slowly adding the solution A in the step (1) into the solution B under the stirring state of the solution B in the step (2), fully stirring until the solution is completely dissolved without precipitation, finally slowly adding an ultraviolet absorbent, and uniformly mixing to obtain the ultraviolet absorbent.
Compared with the prior art, the invention has the following advantages:
(1) The active components in the material, namely anions in water-soluble silicate, sulfate and hydrogen phosphate, rapidly permeate into the base material under the action of capillary siphonage of the cement concrete base material, react with cations such as calcium ions and the like in the cement concrete base material to generate insoluble crystalline substances such as hydrated calcium silicate, calcium hydrogen phosphate and ettringite, block the internal pores of the base material and enhance the impermeability of the base material. The silicate solution and the silane coupling agent in the material are hydrolyzed to generate silanol, the silanol and the silanol are condensed to form oligomer, the oligomer is connected with hydroxyl in silicate to form flexible Si-O-Si bonds, a compact waterproof flexible hydrophobic film is formed on the surface of a cement concrete base material, and the compact waterproof flexible hydrophobic film and the active component act together to form double-effect protection, so that the waterproof effect is greatly enhanced, and the comprehensive mechanical property of the coating is excellent.
(2) Active components, namely silicate, sulfate and hydrogen phosphate anions are added to react with cations such as calcium ions in the concrete to generate crystalline insoluble substances to block pores.
(3) According to the invention, the silane hydrophobing agent is added to improve the hydrophobic effect of the waterproof material, so that the impermeability and the self-cleaning property of the cement concrete matrix are further improved.
(4) According to the invention, sodium hydroxide is added to provide an alkaline environment for a system, so that the stable activity of the organic-inorganic hybrid waterproof coating is effectively ensured.
(5) According to the invention, the acrylic emulsion is added, and the acrylic emulsion, the organic silicon solution and the inorganic silicon solution are used as film forming components, the organic silicon component and the inorganic silicon component are hybridized, and the flexible chain segment in the organic component is introduced into the inorganic component, so that the film forming flexibility and the adhesive force with a base material are improved, the integrity of a coating formed by coating the material on the base material is ensured, and the base material has a better protection effect.
(6) The waterproof material disclosed by the invention has the characteristics of simple preparation method, simple and convenient construction process, strong controllability, good impermeability, high mechanical strength, good flexibility and the like, and abandons the defect of mixing and reusing of some organic materials. The water-repellent self-cleaning agent can be applied to water resistance, carbonization resistance, chlorine ion corrosion resistance and the like of balconies, basements, building exterior walls, cement-based curing fishponds and highway bridges, and the self-cleaning effect is provided for buildings due to the hydrophobic characteristic.
Drawings
The foregoing and/or other advantages of the invention will become further apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
FIG. 1 shows the film-forming appearance of the coating of example 1 coated on a cement mortar test block.
FIG. 2 shows the results of the static contact angle test of the blank cement test block and the surface of the cement test block coated with the waterproof coating material of the present invention.
FIG. 3 is a representation XRD (X-ray diffraction) diagram and an enlarged XRD diagram of specific hydration products of a blank cement test block and a cement test block coated with the waterproof coating of the invention.
FIG. 4 is a cross-sectional water penetration of coated and uncoated water repellent coated substrates after completion of the impermeability test.
Detailed Description
The invention will be better understood from the following examples.
Example 1
A concrete self-cleaning organic-inorganic hybrid waterproof material comprises the following components by mass: 26.655g of deionized water, 0.01g of sodium chloride, 0.02g of sodium hydroxide, 0.1g of sodium sulfate and 0.1g of disodium hydrogen phosphate are weighed and sequentially added into a glass reactor, and the mixture is fully stirred until the mixture is completely dissolved. Then adding 1g of sodium methyl silicate solution, 10g of sodium silicate solution and 10.53g of potassium silicate solution, and stirring until the solutions are uniformly mixed to obtain solution A; weighing 25g of styrene-acrylic emulsion, then slowly adding 1.1g of organosilane (0.5 g of gamma-glycidoxypropyltrimethoxysilane, 0.4g of 3-glycidoxypropylmethyldiethoxysilane and 0.2g of simethicone) and stirring until the mixture is completely dissolved without layering and precipitation to obtain a solution B; and then slowly adding the solution A into the solution B, fully stirring until no layering and no precipitation exist, finally slowly adding 0.05g of benzophenone, and uniformly mixing to obtain a finished product.
Example 2
A concrete self-cleaning organic-inorganic hybrid waterproof material comprises the following components by mass: 25.938g of deionized water, 0.007g of sodium chloride, 0.01g of sodium hydroxide, 0.08g of zinc sulfate and 0.08g of monopotassium phosphate are weighed and sequentially added into a glass reactor, and the mixture is fully stirred until the mixture is completely dissolved. Then adding 1.5g of methyl potassium silicate solution, 5g of sodium silicate solution and 10g of potassium silicate solution, and stirring until the solutions are uniformly mixed to obtain solution A; weighing 30g of pure acrylic emulsion, then slowly adding 2.0g of organosilane (0.5 g of gamma-glycidoxypropyltrimethoxysilane, 1.0g of 3-glycidoxypropylmethyldiethoxysilane and 0.5g of polymethylhydrosiloxane) and stirring until the mixture is completely dissolved without layering and precipitation to obtain a solution B; and then slowly adding the solution A into the solution B, fully stirring until no layering and no precipitation exist, finally slowly adding 0.05g of salicylate, and uniformly mixing to obtain a finished product.
Example 3
A concrete self-cleaning organic-inorganic hybrid waterproof material comprises the following components by mass: weighing 15.2g of deionized water, 0.005g of sodium chloride, 0.01g of sodium hydroxide, 0.05g of sodium sulfate and 0.05g of sodium dihydrogen phosphate, sequentially adding the materials into a glass reactor, and fully stirring the materials until the materials are completely dissolved. Then adding 2g of methyl potassium silicate solution, 15g of sodium silicate solution and 10g of potassium silicate solution, and stirring until the solutions are uniformly mixed to obtain solution A; measuring 30g of silicone-acrylate emulsion, then slowly adding 2.3g of organosilane (0.8 g of gamma-glycidoxypropyltrimethoxysilane, 1.0g of 3-glycidoxypropylmethyldiethoxysilane and 0.5g of polymethylhydrosiloxane) and stirring until the solution is completely dissolved without layering and precipitation to obtain a solution B; and then slowly adding the solution A into the solution B, fully stirring until no layering and no precipitation exist, finally slowly adding 0.05g of benzotriazole, and uniformly mixing to obtain a finished product.
Example 4
A concrete self-cleaning organic-inorganic hybrid waterproof material comprises the following components by mass: weighing 13.74g of deionized water, 0.005g of sodium chloride, 0.01g of sodium hydroxide, 0.05g of zinc sulfate and 0.05g of disodium hydrogen phosphate, sequentially adding the materials into a glass reactor, and fully stirring until the materials are completely dissolved. Then adding 2g of sodium methyl silicate solution and 20.77g of potassium silicate solution, and stirring until the solutions are uniformly mixed to obtain solution A; weighing 35g of styrene-acrylic emulsion, then slowly adding 2.94g of organosilane (1.0 g of gamma-glycidoxypropyltrimethoxysilane, 0.8g of 3-glycidoxypropylmethyldiethoxysilane and 1.14g of simethicone) and stirring until the mixture is completely dissolved without layering and precipitation to obtain a solution B; and then slowly adding the solution A into the solution B, fully stirring until no layering and no precipitation exist, finally slowly adding 0.1g of triazine, and uniformly mixing to obtain a finished product.
The coating adhesion and hardness were tested according to GB/T6739-2006 Pencil test for coating hardness, GB/T9286-1998 test for marking test of paint films of paints and varnishes. The coatings prepared in examples 1 to 4 were applied to a cement paste test block for 24 hours and then subjected to a static contact angle test using a surface contact angle meter. After the coatings of examples 1 to 4 were applied to standard cement mortar test blocks of different curing ages for 24 hours, compressive strength tests were carried out using a cement mortar press. The permeability resistance test was performed using a digital mortar permeameter, and the permeability resistance of the coating was characterized by a penetration height method in a mode of pressurizing 0.1MPa stepwise per hour (from 1.2MPa stepwise to 1.9MPa for 8 hours in total). The blank test block was not coated with paint. The results are shown in table 1, and it can be seen that the organic-inorganic hybrid waterproof material developed by the present invention is coated on a substrate to form a coating film, which has little influence on the mechanical properties of the substrate, and especially has the effect of improving the mechanical properties of a long-term substrate. The adhesive force of the coating basically reaches 0 grade, and the hardness basically reaches 2H. The penetration height ratio is below 60%, preferably 25.28%, and the anti-permeability performance is good.
TABLE 1
FIG. 1 shows the appearance of the film formed by coating the paint of example 1 on a cement mortar test block, and it can be seen that the coating state is good and no cracks or other adverse conditions occur.
FIG. 2 shows the results of the static contact angle test of the blank cement test block and the surface of the cement test block coated with the waterproof coating material of the present invention. Wherein, (a) is the static contact angle of the cement paste without the waterproof material; (b) Static contact angle of cement paste for coating the waterproof material of example 1; (c) Static contact angle of cement paste for coating the waterproof material of example 2; (d) Static contact angle of cement paste for coating the waterproof material of example 3; (e) To coat the neat cement paste static contact angle of the waterproof material of example 4. It can be seen that the contact angle of the surface of the test block coated with the waterproof material is obviously increased compared with that of a blank group, which indicates that the hydrophobic property of the surface of the substrate is obviously improved.
FIG. 3 is a representation XRD pattern of hydration products of a blank cement test block and a cement test block coated with the waterproof coating material of the present invention and an enlarged view of a fingerprint area of the characteristic hydration products; wherein, (a) blank cement test block and cement test block hydration product coated with the waterproof coating material of the invention are characterized by XRD pattern; (b) alunite XRD magnification; (c) XRD magnification of dibasic calcium phosphate dihydrate. It can be seen that, compared with the blank group, the content of ettringite and calcium hydrophosphate in the hydration product of the clean slurry test block coated with the waterproof coating of the invention is obviously increased, and the generation of the crystalline substances can effectively block the pores to achieve the waterproof effect.
FIG. 4 is a cross-sectional water seepage condition of a blank set and a substrate coated with a waterproof coating after completing a impermeability test; wherein, (a) the section of the base material has water seepage condition after the impermeability test of the uncoated waterproof coating; (b) Water permeability of a section of a substrate after the water-repellent paint of coating example 3 was subjected to a water permeation resistance test. It can be seen that the water seepage condition of the section of the substrate coated with the waterproof coating is obviously better than that of the blank sample which is not coated with the waterproof coating, and the waterproof coating has excellent waterproof effect.
The invention provides a concrete self-cleaning organic-inorganic hybrid waterproof coating formula and a preparation idea and method thereof, particularly provides a plurality of family compounds, preparation methods and ways for realizing the technical scheme, and the above description is only a preferred embodiment of the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be construed as the protection scope of the present invention. All the components not specified in this embodiment can be implemented by the prior art.
Claims (9)
1. The concrete self-cleaning organic-inorganic hybrid waterproof coating is characterized by comprising the following components in percentage by mass:
18.4 to 35.7 percent of deionized water, 33.5 to 46.9 percent of acrylic emulsion, 0.0067 to 0.0134 percent of sodium chloride, 0.0134 to 0.0268 percent of sodium hydroxide, 0.067 to 0.134 percent of water-soluble sulfate, 0.067 to 0.134 percent of water-soluble hydrogen phosphate, 1.3 to 2.7 percent of organic silicon solution, 1.2 to 6.8 percent of organic silane, 20.0 to 33.5 percent of inorganic silicon solution and 0.067 to 0.14 percent of ultraviolet absorbent.
2. The self-cleaning organic-inorganic hybrid waterproof coating material as claimed in claim 1, wherein the acrylic emulsion is selected from one or a combination of more than two of pure acrylic emulsion, silicone acrylic emulsion and styrene acrylic emulsion.
3. The self-cleaning organic-inorganic hybrid waterproof coating material as claimed in claim 1, wherein the water-soluble sulfate is selected from one or a combination of more than two of sodium sulfate, potassium sulfate and zinc sulfate.
4. The concrete self-cleaning organic-inorganic hybrid waterproof coating material as claimed in claim 1, wherein the water-soluble hydrogen phosphate is selected from one or a combination of two or more of sodium dihydrogen phosphate, disodium hydrogen phosphate, potassium dihydrogen phosphate and dipotassium hydrogen phosphate.
5. The concrete self-cleaning organic-inorganic hybrid waterproof coating as claimed in claim 1, wherein the organosilicon solution is selected from any one or two of a sodium methylsilicate aqueous solution and a potassium methylsilicate aqueous solution; the mass concentration of the organic silicon solution is 30-50%.
6. The concrete self-cleaning organic-inorganic hybrid waterproof coating material as claimed in claim 1, wherein the inorganic silicon solution is selected from any one or two of sodium silicate aqueous solution and potassium silicate aqueous solution; the mass concentration of the inorganic silicon solution is 20-45%.
7. The concrete self-cleaning organic-inorganic hybrid waterproof coating material as claimed in claim 1, wherein the organosilane is selected from the group consisting of any two or more of simethicone, polymethylhydrosiloxane, gamma-glycidoxypropyltrimethoxysilane, and 3-glycidoxypropylmethyldiethoxysilane; the mass concentration of organosilane is more than 95%.
8. The self-cleaning organic-inorganic hybrid waterproof concrete paint as claimed in claim 1, wherein the ultraviolet absorber is selected from any one or a combination of more than two of benzophenones, benzotriazole, salicylates and triazines.
9. A preparation method of the concrete self-cleaning organic-inorganic hybrid waterproof coating as claimed in claim 1, which is characterized by comprising the following steps:
(1) Mixing deionized water, sodium chloride, sodium hydroxide, water-soluble sulfate and water-soluble hydrogen phosphate, fully stirring the solution, then sequentially adding an organic silicon solution and an inorganic silicon solution, uniformly mixing, and stirring until the solution is clear to obtain a solution A;
(2) Slowly adding organosilane into the acrylic emulsion in a stirring state, and fully stirring until the solution is free of precipitation and layering to obtain a solution B;
(3) And (3) slowly adding the solution A in the step (1) into the solution B under the stirring state of the solution B in the step (2), fully stirring until the solution is completely dissolved without precipitation or layering, finally slowly adding an ultraviolet absorbent, and uniformly mixing to obtain the ultraviolet-absorbing ultraviolet-curing paint.
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