CN113292882B - Slow-release silane powder and preparation method and application thereof - Google Patents
Slow-release silane powder and preparation method and application thereof Download PDFInfo
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- CN113292882B CN113292882B CN202110559706.1A CN202110559706A CN113292882B CN 113292882 B CN113292882 B CN 113292882B CN 202110559706 A CN202110559706 A CN 202110559706A CN 113292882 B CN113292882 B CN 113292882B
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- cement
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- 239000000843 powder Substances 0.000 title claims abstract description 153
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 title claims abstract description 99
- 229910000077 silane Inorganic materials 0.000 title claims abstract description 97
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 238000000576 coating method Methods 0.000 claims abstract description 121
- 239000011248 coating agent Substances 0.000 claims abstract description 110
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 103
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 48
- XPBBUZJBQWWFFJ-UHFFFAOYSA-N fluorosilane Chemical compound [SiH3]F XPBBUZJBQWWFFJ-UHFFFAOYSA-N 0.000 claims abstract description 40
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000007822 coupling agent Substances 0.000 claims abstract description 29
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 24
- 239000000839 emulsion Substances 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 19
- -1 silicate ester Chemical class 0.000 claims abstract description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 17
- IVKNZCBNXPYYKL-UHFFFAOYSA-N 2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[4-(2,4,4-trimethylpentan-2-yl)phenoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethanol Chemical compound CC(C)(C)CC(C)(C)C1=CC=C(OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO)C=C1 IVKNZCBNXPYYKL-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 15
- 238000006116 polymerization reaction Methods 0.000 claims description 13
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 11
- 239000002002 slurry Substances 0.000 claims description 10
- 229940089951 perfluorooctyl triethoxysilane Drugs 0.000 claims description 8
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 claims description 8
- AVYKQOAMZCAHRG-UHFFFAOYSA-N triethoxy(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)silane Chemical compound CCO[Si](OCC)(OCC)CCC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F AVYKQOAMZCAHRG-UHFFFAOYSA-N 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- VBGGLSWSRVDWHB-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-henicosafluorodecyl-tris(trifluoromethoxy)silane Chemical compound FC(F)(F)O[Si](OC(F)(F)F)(OC(F)(F)F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F VBGGLSWSRVDWHB-UHFFFAOYSA-N 0.000 claims description 5
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-N 0.000 claims description 5
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 239000005871 repellent Substances 0.000 claims 1
- 239000004568 cement Substances 0.000 abstract description 87
- 239000000463 material Substances 0.000 abstract description 64
- 238000010521 absorption reaction Methods 0.000 abstract description 28
- 238000006703 hydration reaction Methods 0.000 abstract description 24
- 230000036571 hydration Effects 0.000 abstract description 23
- 239000007788 liquid Substances 0.000 abstract description 6
- 239000003921 oil Substances 0.000 abstract description 5
- 239000011148 porous material Substances 0.000 abstract description 5
- 239000007787 solid Substances 0.000 abstract description 3
- 239000011344 liquid material Substances 0.000 description 53
- 230000003075 superhydrophobic effect Effects 0.000 description 37
- 238000012360 testing method Methods 0.000 description 25
- 239000002174 Styrene-butadiene Substances 0.000 description 24
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 24
- 239000011115 styrene butadiene Substances 0.000 description 24
- 229920003048 styrene butadiene rubber Polymers 0.000 description 24
- 239000004816 latex Substances 0.000 description 23
- 229920000126 latex Polymers 0.000 description 23
- 239000003638 chemical reducing agent Substances 0.000 description 21
- 239000002518 antifoaming agent Substances 0.000 description 19
- 238000002156 mixing Methods 0.000 description 17
- 239000013008 thixotropic agent Substances 0.000 description 15
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 15
- 229920002554 vinyl polymer Polymers 0.000 description 15
- 239000010440 gypsum Substances 0.000 description 12
- 229910052602 gypsum Inorganic materials 0.000 description 12
- 239000011398 Portland cement Substances 0.000 description 11
- 150000004645 aluminates Chemical class 0.000 description 11
- 239000011414 polymer cement Substances 0.000 description 11
- 239000006004 Quartz sand Substances 0.000 description 10
- 230000000844 anti-bacterial effect Effects 0.000 description 10
- 239000003899 bactericide agent Substances 0.000 description 10
- 230000002209 hydrophobic effect Effects 0.000 description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 9
- 239000000654 additive Substances 0.000 description 8
- 230000000996 additive effect Effects 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 8
- UMHKOAYRTRADAT-UHFFFAOYSA-N [hydroxy(octoxy)phosphoryl] octyl hydrogen phosphate Chemical compound CCCCCCCCOP(O)(=O)OP(O)(=O)OCCCCCCCC UMHKOAYRTRADAT-UHFFFAOYSA-N 0.000 description 7
- 239000002253 acid Substances 0.000 description 7
- 230000007774 longterm Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 241000276489 Merlangius merlangus Species 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002480 mineral oil Substances 0.000 description 5
- 235000010446 mineral oil Nutrition 0.000 description 5
- 229920001285 xanthan gum Polymers 0.000 description 5
- YYRMJZQKEFZXMX-UHFFFAOYSA-N calcium;phosphoric acid Chemical compound [Ca+2].OP(O)(O)=O.OP(O)(O)=O YYRMJZQKEFZXMX-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 229960004275 glycolic acid Drugs 0.000 description 4
- 238000002791 soaking Methods 0.000 description 4
- 239000002426 superphosphate Substances 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 3
- WZFUQSJFWNHZHM-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 WZFUQSJFWNHZHM-UHFFFAOYSA-N 0.000 description 3
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical group O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- PLSFNSJUKGEOSL-UHFFFAOYSA-N dioctoxy(oxo)phosphanium Chemical compound CCCCCCCCO[P+](=O)OCCCCCCCC PLSFNSJUKGEOSL-UHFFFAOYSA-N 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- DEXFNLNNUZKHNO-UHFFFAOYSA-N 6-[3-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-3-oxopropyl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)C(CCC1=CC2=C(NC(O2)=O)C=C1)=O DEXFNLNNUZKHNO-UHFFFAOYSA-N 0.000 description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-M Glycolate Chemical compound OCC([O-])=O AEMRFAOFKBGASW-UHFFFAOYSA-M 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 239000013522 chelant Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 125000003709 fluoroalkyl group Chemical group 0.000 description 2
- 125000001165 hydrophobic group Chemical group 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OHVLMTFVQDZYHP-UHFFFAOYSA-N 1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-2-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound N1N=NC=2CN(CCC=21)C(CN1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)=O OHVLMTFVQDZYHP-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 1
- BQWFPFHFAGEJQJ-UHFFFAOYSA-N CCCCCCCCP(CCCCCCCC)C(C(O)P(CCCCCCCC)CCCCCCCC)O Chemical group CCCCCCCCP(CCCCCCCC)C(C(O)P(CCCCCCCC)CCCCCCCC)O BQWFPFHFAGEJQJ-UHFFFAOYSA-N 0.000 description 1
- 229910008051 Si-OH Inorganic materials 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- 229910006358 Si—OH Inorganic materials 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- JETSKDPKURDVNI-UHFFFAOYSA-N [C].[Ca] Chemical compound [C].[Ca] JETSKDPKURDVNI-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 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
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 150000004671 saturated fatty acids Chemical class 0.000 description 1
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 125000005373 siloxane group Chemical group [SiH2](O*)* 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XYRAEZLPSATLHH-UHFFFAOYSA-N trisodium methoxy(trioxido)silane Chemical compound [Na+].[Na+].[Na+].CO[Si]([O-])([O-])[O-] XYRAEZLPSATLHH-UHFFFAOYSA-N 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 238000004078 waterproofing Methods 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/06—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement
- C09D1/08—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement with organic additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of waterproof materials, and particularly discloses slow-release silane powder and a preparation method and application thereof. The slow-release silane powder is prepared from the following raw materials in parts by weight: 20-40 parts of fluorosilane, 5-10 parts of silicate ester, 5-10 parts of titanate coupling agent, 1-2 parts of OP-10, 80-2 parts of span, 20-30 parts of micro silicon powder, 5-10 parts of calcium carbonate whisker, 2-10 parts of PVA and 15-25 parts of water. The slow-release silane powder prepared by the invention is of a solid-in-oil structure, the main component of the shell of the slow-release silane powder is water-soluble PVA, and the main component of the core of the slow-release silane powder is liquid fluorosilane. The slow-release silane powder with the oil-in-solid structure solves the problems of low cement hydration degree, more gel pores, low waterproof coating strength, high water absorption rate and the like caused by serious influence on cement hydration caused by directly adding silane or silane emulsion into cement paste.
Description
The application is a divisional application of an invention patent with the application number of CN 201910676455.8, the application date of 2019-7-25, and the name of 'a slow-release silane powder, a super-hydrophobic cement-based flexible waterproof coating and a preparation method thereof'.
Technical Field
The invention relates to the technical field of waterproof materials, in particular to a super-hydrophobic cement-based flexible waterproof coating and a preparation method thereof.
Background
The waterproof material is developed for four generations, the first generation waterproof material is asphalt coiled material, the asphalt coiled material has low requirements on base materials for construction and high construction speed due to low price, still occupies a large share in the field of roof waterproofing, but has great pollution to human bodies and environment due to tar-containing components, has poor outdoor durability and is not easy to clean in maintenance; the second generation waterproof material is polyurethane, and the waterproof material contains volatile and toxic solvents, so the waterproof material is forbidden to use and is eliminated by the market; the third-generation waterproof material is acrylic acid which is a film-coating type waterproof material, has no seam and no toxicity, is convenient to construct, and still occupies a certain share in the waterproof market; the fourth generation waterproof is polymer cement, and the waterproof material film type waterproof material has no seam, is convenient to construct, and has a hydrophobic function and a permeable crystallization function. The fourth generation waterproof material has an active waterproof function and excellent performance, so that the polymer cement-based waterproof material becomes the mainstream waterproof material in the current market.
Although the polymer cement-based waterproof material is the mainstream waterproof material at present, the polymer cement-based waterproof material has higher water absorption and water resistance which cannot meet the long-term water immersion environment, so that the research on the polymer cement-based waterproof material with the functions of hydrophobicity and infiltration crystallization is more and more. Patent documents CN108689648A, CN108530010a and CN108034287 have studied the modification of polymer cement-based waterproof coating materials, and mainly include modification of polymer cement waterproof coating materials with alkoxysilane, aminosilane, silane coupling agent, sodium methyl silicate, sodium silicate, and the like. However, most cement-based waterproof coatings add silane or silane emulsion directly to the cement paste, and this method is not effective in improving the water absorption of the coating. Because the cement slurry is in an alkaline environment after the cement is hydrated, the silane functional group is hydrolyzed to generate ≡ Si-OH which is subjected to dehydration condensation reaction with hydroxyl on the surface of cement particles to form hydrated siloxane groups ≡ Si-O-Si ≡ and the functional group is preferentially adsorbed on the surface of negatively charged silicate minerals to form a super-hydrophobic group, which hinders the transportation of a medium, the hydration of the cement can be seriously influenced by directly adding the silane or the silane emulsion into the cement slurry, so that the hydration degree of the cement is low, the gel pores are increased, and the water absorption of the silane or the silane emulsion cannot be obviously reduced. Therefore, the durability of the existing waterproof coating still cannot meet the waterproof requirement of the cement-based material in a long-term water immersion environment.
Disclosure of Invention
Aiming at the problems and the defects in the prior art, the invention aims to provide a super-hydrophobic cement-based flexible waterproof coating and a preparation method thereof.
In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:
the slow-release silane powder is prepared from the following raw materials in parts by weight: 20-40 parts of fluorosilane, 5-10 parts of silicate ester, 5-10 parts of titanate coupling agent, 1-2 parts of OP-10, 80-2 parts of span, 20-30 parts of micro silicon powder, 5-10 parts of calcium carbonate whisker, 2-10 parts of PVA and 15-25 parts of water.
According to the above slow-release silane powder, preferably, the fluorosilane is at least one of perfluorooctyltriethoxysilane and perfluorodecyltrimethoxysilane.
According to the above-mentioned slow-release silane powder, the silicate is preferably at least one of methyl orthosilicate and ethyl orthosilicate.
According to the above-mentioned slow-release silane powder, preferably, the titanate coupling agent is a chelate type titanate coupling agent. More preferably, the titanate coupling agents are bis (octyl pyrophosphate) glycolate and bis (dioctyl phosphonate) ethylene glycol titanate.
According to the above slow-release silane powder, preferably, the degree of polymerization of the PVA is 1600 to 4000; the mesh number of the micro silicon powder is 1200-1500 meshes; the length of the calcium carbonate crystal whisker is 20-80 μm, and the diameter is 0.5-1.2 μm.
The preparation method of the slow-release silane powder comprises the following steps:
(1) Uniformly stirring OP-10, span 80, fluorosilane, silicate ester and titanate coupling agent to obtain uniform emulsion, adding PVA, silica micropowder, calcium carbonate whisker and water into the emulsion, and uniformly stirring to obtain slurry;
(2) And (2) drying the slurry prepared in the step (1) to prepare powder with the particle size of 0.1-0.4 mm, thus obtaining the slow-release silane powder.
According to the above production method, preferably, the drying temperature in the step (2) is 60 to 70 ℃.
According to the above production method, preferably, the apparatus used for the drying in the step (2) is a fluidized bed drying apparatus.
The slow-release silane powder can be used for preparing waterproof paint.
A super-hydrophobic cement-based flexible waterproof coating comprises a liquid material and a powder material; the liquid material comprises the following raw materials in parts by weight: 60 to 80 portions of tertiary ethylene carbonate, 5 to 20 portions of carboxylic styrene-butadiene latex, 0.2 to 0.6 portion of defoaming agent, 0.2 to 1 portion of film-forming assistant, 0.1 to 0.5 portion of bactericide and 5 to 20 portions of water; the powder material comprises the following raw materials in parts by weight: 30 to 45 portions of Portland cement, 5 to 10 portions of aluminate cement, 5 to 10 portions of gypsum, 0.4 to 2 portions of slow-release silane powder, 20 to 40 portions of quartz sand, 5 to 20 portions of triple superphosphate, 0.1 to 0.5 portion of thixotropic agent and 0.2 to 0.5 portion of water reducing agent.
According to the above super-hydrophobic cement-based flexible waterproof coating, preferably, the slow-release silane powder is prepared from the following raw materials in parts by weight: 20-40 parts of fluorosilane, 5-10 parts of silicate ester, 5-10 parts of titanate coupling agent, 1-2 parts of OP-10, 80-2 parts of span, 20-30 parts of micro silicon powder, 5-10 parts of calcium carbonate whisker, 2-10 parts of PVA and 15-25 parts of water.
According to the above super-hydrophobic cement-based flexible waterproof coating material, preferably, the fluorosilane is at least one of perfluorooctyltriethoxysilane and perfluorodecyltrimethoxysilane.
According to the above super-hydrophobic cement-based flexible waterproof coating, preferably, the silicate is at least one of methyl orthosilicate and ethyl orthosilicate.
According to the above-mentioned super-hydrophobic cement-based flexible waterproof coating material, preferably, the titanate coupling agent is a chelate titanate coupling agent. More preferably, the titanate coupling agents are bis (octyl pyrophosphate) glycolate and bis (dioctyl phosphonate) ethylene glycol titanate.
According to the super-hydrophobic cement-based flexible waterproof coating, preferably, the polymerization degree of the PVA is 1600-4000; the mesh number of the micro silicon powder is 1200-1500 meshes; the length of the calcium carbonate crystal whisker is 20-80 μm, and the diameter is 0.5-1.2 μm.
According to the super-hydrophobic cement-based flexible waterproof coating, the mass ratio of the liquid material to the powder material is preferably 1 (1-3).
According to the super-hydrophobic cement-based flexible waterproof coating, preferably, the film-forming aid is an alcohol ester dodecafilm-forming aid; the water reducing agent is at least one of a polycarboxylic acid water reducing agent and a naphthalene water reducing agent; the thixotropic agent is high-molecular xanthan powder; the defoaming agent is a mineral oil defoaming agent.
The preparation method of the super-hydrophobic cement-based flexible waterproof coating comprises the following steps:
(a) Preparing a liquid material: stirring and uniformly mixing the vinyl versatate and the carboxylic styrene-butadiene latex, then adding the film-forming assistant, the defoamer, the bactericide and water while stirring, and uniformly mixing to obtain a liquid material;
(b) Preparing powder: uniformly stirring and mixing portland cement, aluminate cement, gypsum, slow-release silane powder, a thixotropic agent, coarse whiting, quartz sand and a water reducing agent to obtain powder;
(c) Adding the powder into the liquid material according to the mass ratio of the liquid material to the powder material of 1 (1-3), and uniformly mixing to obtain the super-hydrophobic cement-based flexible waterproof coating.
The reaction mechanism of the super-hydrophobic cement-based flexible waterproof coating is as follows:
(1) The slow-release silane powder is of a solid-in-oil structure, the main component of the shell of the slow-release silane powder is PVA, and the main component of the core of the slow-release silane powder is fluorosilane; after the powder and the liquid of the super-hydrophobic cement-based flexible waterproof coating are mixed, calcium silicate cement and calcium aluminate cement in the powder immediately begin to hydrate, a PVA shell of slow-release silane powder in the powder also begins to slowly dissolve under the action of water, the PVA shell can release internal fluorosilane after being completely dissolved, the hydration rate of the cement is far higher than that of the PVA, and cement hydration is mainly used in the stage; after cement hydration is basically finished, silane molecules coated by PVA begin to be released and freely migrate in the coating, silane is quickly hydrolyzed in an alkaline environment after cement hydration, and the hydrolyzed silane structure can be R-Si- (OH) 3 Is represented by, wherein- (OH) 3 The hydrophobic layer has reactivity, can be in chemical bond connection with hydroxyl on the surface of a cement hydration product through dehydration condensation, and the fluoroalkyl is arranged on the surface of the cement hydration product to form a permanent hydrophobic layer, so that the hydrophobic layer prevents liquid water from being introduced, and the water resistance of the waterproof coating is improved.
The binding of silane to cement hydrate is illustrated below:
(2) When the liquid material and the powder material in the super-hydrophobic cement-based flexible waterproof coating are contacted, cement in the powder material immediately begins to hydrate, part of water is consumed by cement hydration, and with the reduction of water in a system, polymers suspended in the coating are gradually accumulated on the surface of a cement hydration product in the form of compact polymer particles, and the polymer particles can effectively fill capillary pores of cement hydrates, so that the structure of the waterproof coating is more compact, the water absorption rate of the waterproof coating is reduced, and the waterproof and water-resistant performances of the waterproof coating are improved; and as the water content in the system is further reduced, the vinyl versatate in the liquid material begins to be accumulated on the surface of the cement hydration product, and a compact macromolecular polymer film is formed on the surface of the cement hydration product.
(3) The existing polymer cement waterproof coating improves the compactness of the waterproof coating by means of the accumulation of polymers on the surface of a cement hydration product, thereby reducing the water absorption of the waterproof coating and achieving the effect of improving the waterproof and water-resistant properties of the waterproof coating. According to the invention, hydrophobic groups of fluorosilane are introduced into a coating system, so that a cement hydration product carries the hydrophobic groups and has strong hydrophobic performance; the polymer is accumulated on the surface of a cement hydration product with hydrophobic property, so that the structural compactness of the waterproof coating can be improved, the water absorption of the waterproof coating can be reduced, and the waterproof and waterproof functions of the waterproof coating can be further realized; therefore, the waterproof coating prepared by the invention realizes the waterproof function from two aspects: namely, the self hydrophobicity of the waterproof coating and the self compact structure of the waterproof coating; the hydrophobic property of the waterproof coating enables water molecules to be difficult to enrich on the surface of the waterproof coating for a long time, and the compact structure of the waterproof coating ensures that the water molecules are difficult to penetrate through the waterproof layer. Therefore, the waterproof coating is ensured to have both waterproofness and long-term waterproofness by the hydrophobicity and the compact structure of the waterproof coating itself.
Compared with the prior art, the invention has the following positive beneficial effects:
(1) When the slow-release silane powder is prepared, OP-10, span 80, silicate ester, fluorosilane and titanate coupling agent are added into a high-speed stirrer and dispersed at high speed to form uniform white emulsion, lipophilic groups of the OP-10, span 80, silicate ester and coupling agent are combined with fluorosilane to form an oil phase in the stirring process, and hydrophilic groups of the oil phase are spread outwards to form oil-in-water droplets; then adding PVA, silica powder, calcium carbonate whiskers and water, and continuing stirring, wherein the PVA, calcium carbonate whiskers and silica powder are accumulated on the surface of the oil-in-water droplets in the stirring process to form a uniform water-soluble polymer film, so as to obtain water-based slurry with uniform appearance; drying the slurry in fluidized bed drying equipment to prepare powder with the particle size of 0.1-0.4 mm, and obtaining the slow-release silane powder. Therefore, the slow-release silane powder prepared by the invention is of a solid-in-oil structure, the main component of the shell of the slow-release silane powder is water-soluble PVA, and the main component of the core of the slow-release silane powder is liquid fluorosilane.
After the powder and the liquid of the super-hydrophobic cement-based flexible waterproof coating are mixed, cement in the powder begins to hydrate, a PVA shell of slow-release silane powder with an oil-in-solid structure also begins to slowly dissolve under the action of water, and the PVA shell can release fluorosilane inside the slow-release silane powder after being completely dissolved, so that when the fluorosilane inside the slow-release silane powder is released, the early hydration of the cement in the powder is basically completed, the influence of the fluorosilane on the hydration degree of the cement is small, and silicon hydroxyl generated by the hydrolysis of the fluorosilane can be in dehydration condensation with hydroxyl on the surface of a cement hydration product to form chemical bond connection, so that the fluoroalkyl is arranged on the surface of the cement hydration product to form a permanent hydrophobic layer which blocks the intervention of liquid water, and the water resistance of the waterproof coating is improved. Therefore, the slow-release silane powder with the oil-in-solid structure solves the problems of low cement hydration degree, more gel pores, low waterproof coating strength, high water absorption rate and the like caused by the serious influence on cement hydration caused by directly adding silane or silane emulsion into cement paste.
(2) The PVA in the slow-release silane powder composition is PVA with polymerization degree of 1600-4000, the molecular weight of the PVA with the polymerization degree is moderate, the wrapping effect is good, the shell formation is easy, and the PVA with the polymerization degree is moderate in water solubility, so that the slow release of the fluorosilane in the interior is facilitated; if the molecular weight of PVA is too small, the wrapping property is poor, and the shell is not easy to form; if the molecular weight of PVA is too large, it has poor water solubility and is not favorable for the release of fluorosilane.
(3) When the slow-release silane powder is prepared, the selected drying temperature is 60-70 ℃, the drying is carried out within the temperature range, the fluorosilane inside the slow-release silane powder is not volatilized, the drying effect is good, the drying time is short, and if the drying temperature exceeds 70 ℃, the fluorosilane inside the slow-release silane powder is volatilized, so that the hydrophobicity of the fluorosilane powder is influenced.
(4) The micro silicon powder contained in the slow-release silane powder has high activity, can fill pores and can participate in the hydration reaction of common Portland cement; in addition, the slow-release silane powder also contains calcium carbonate whiskers, and the calcium carbonate whiskers can react with high-alumina cement to form monocarbon calcium aluminate hydrate and aluminum hydroxide, so that the compactness of the whole waterproof coating is improved.
(5) The invention adopts the vinyl versatate emulsion and the carboxylic styrene-butadiene latex as the main components of the waterproof coating liquid material, the vinyl versatate is the saturated fatty acid vinyl ester with highly branched alpha-carbon, the highly branched vinyl versatate has large steric hindrance effect and hydrophobic effect, so that the vinyl versatate has excellent hydrophobicity and long-term water resistance, but the adhesive force between the vinyl versatate emulsion and the base surfaces of concrete, steel and the like is weaker due to the lack of active groups; the carboxylic styrene-butadiene latex has strong polarity and good adhesion, so the main purpose of introducing the carboxylic styrene-butadiene latex is to improve the adhesion of the coating to substrates such as cement, steel and the like; through mixing the vinyl versatate emulsion and the carboxylic styrene-butadiene latex and adjusting the proportion of the vinyl versatate emulsion and the carboxylic styrene-butadiene latex, the prepared waterproof coating liquid material has excellent hydrophobicity and long-term water resistance, also has good adhesion, can be stably adhered to the surface of a base material, and greatly improves the adhesion strength of the waterproof coating and the base material (concrete, steel and the like).
(6) The silicate cement-aluminate cement-gypsum composite gel system has the characteristics of high early strength and quick setting time, and the aluminate cement and the gypsum provide a large amount of Al (OH) 4 - And Ca 2+ 、SO 4 2- Provides support for AFt forming time and generated amount, and meets the requirement of early-strength quick setting.
(7) The waterproof coating prepared by the invention has extremely low water absorption rate, excellent hydrophobic, waterproof and anti-permeability performances, high bonding strength with mortar or concrete base surfaces, capability of meeting the use requirement of a long-term water immersion environment, and wide application field.
Detailed Description
The present invention will be described in further detail with reference to the following examples, which are not intended to limit the scope of the invention.
The first embodiment is as follows: preparation of Slow-Release silane powder
Example 1-1:
the slow-release silane powder is prepared from the following raw materials in parts by weight: 25 parts of fluorosilane, 5 parts of silicate ester, 5 parts of titanate coupling agent, OP-10 parts, 80 parts of span, 30 parts of micro silicon powder, 10 parts of calcium carbonate whisker, 2 parts of PVA and 20 parts of deionized water.
The fluorosilane is perfluorooctyl triethoxysilane; the silicate is methyl orthosilicate; the titanate coupling agent is di (octyl pyrophosphate) glycollic acid titanate; the polymerization degree of the PVA is 2000; the mesh number of the micro silicon powder is 1200-1500 meshes; the length of the calcium carbonate crystal whisker is 20-80 μm, and the diameter is 0.5-1.2 μm.
The preparation method of the slow-release silane powder comprises the following steps:
(1) Adding OP-10, span 80, fluorosilane, silicate ester and titanate coupling agent into a high-speed stirrer according to a ratio, and dispersing at a high speed for 40-60min to obtain uniform white emulsion; then adding PVA, silicon micropowder, calcium carbonate whiskers and water, and stirring for 30-40min to obtain slurry;
(2) Drying the slurry prepared in the step (1) in fluidized bed drying equipment at the temperature of 60-70 ℃ to prepare powder with the particle size of 0.1-0.4 mm, thus obtaining the slow-release silane powder.
Examples 1 to 2:
the slow-release silane powder is prepared from the following raw materials in parts by weight: 40 parts of fluorosilane, 5 parts of silicate ester, 5 parts of titanate coupling agent, 2 parts of OP-10, 80 parts of span, 20 parts of micro silicon powder, 10 parts of calcium carbonate whisker, 2 parts of PVA and 15 parts of deionized water.
The fluorosilane is perfluorooctyl triethoxysilane; the silicate is methyl orthosilicate; the titanate coupling agent is di (octyl pyrophosphate) hydroxyacetic acid titanate; the polymerization degree of the PVA is 2000; the mesh number of the micro silicon powder is 1200-1500 meshes; the length of the calcium carbonate crystal whisker is 20-80 μm, and the diameter is 0.5-1.2 μm.
The preparation method of the slow release type silane powder is the same as that of example 1.
Examples 1 to 3:
the slow-release silane powder is prepared from the following raw materials in parts by weight: 20 parts of fluorosilane, 5 parts of silicate ester, 10 parts of titanate coupling agent, 1.5 parts of OP-10, 80.5 parts of span, 30 parts of silica fume, 5 parts of calcium carbonate whisker, 7 parts of PVA and 20 parts of deionized water.
The fluorosilane is perfluorooctyl triethoxysilane; the silicate is methyl orthosilicate; the titanate coupling agent is di (octyl pyrophosphate) hydroxyacetic acid titanate; the polymerization degree of the PVA is 2000; the mesh number of the micro silicon powder is 1200-1500 meshes; the length of the calcium carbonate whisker is 20-80 mu m, and the diameter is 0.5-1.2 mu m.
The preparation method of the slow release type silane powder is the same as that of the example 1.
Examples 1 to 4:
the slow-release silane powder is prepared from the following raw materials in parts by weight: 20 parts of fluorosilane, 10 parts of silicate ester, 5 parts of titanate coupling agent, OP-10 parts, 80 parts of span, 25 parts of micro silicon powder, 10 parts of calcium carbonate whisker, 7 parts of PVA and 20 parts of deionized water.
The fluorosilane is perfluorooctyl triethoxysilane; the silicate is methyl orthosilicate; the titanate coupling agent is di (octyl pyrophosphate) hydroxyacetic acid titanate; the polymerization degree of the PVA is 2000; the mesh number of the micro silicon powder is 1200-1500 meshes; the length of the calcium carbonate whisker is 20-80 mu m, and the diameter is 0.5-1.2 mu m.
The preparation method of the slow release type silane powder is the same as that of the example 1.
Examples 1 to 5:
the slow-release silane powder is prepared from the following raw materials in parts by weight: 35 parts of fluorosilane, 6 parts of silicate ester, 6 parts of titanate coupling agent, 2 parts of OP-10, 80 parts of span, 20 parts of micro silicon powder, 5 parts of calcium carbonate whisker, 10 parts of PVA and 15 parts of deionized water.
The fluorosilane is perfluorooctyl triethoxysilane; the silicate is methyl orthosilicate; the titanate coupling agent is di (octyl pyrophosphate) hydroxyacetic acid titanate; the polymerization degree of the PVA is 2000; the mesh number of the micro silicon powder is 1200-1500 meshes; the length of the calcium carbonate whisker is 20-80 mu m, and the diameter is 0.5-1.2 mu m.
The preparation method of the slow release type silane powder is the same as that of the example 1.
Examples 1 to 6:
examples 1 to 6 are substantially the same as examples 1 to 1 except that: the fluorosilane is perfluorodecyl trimethoxy silane; the silicate is ethyl orthosilicate; the titanate coupling agent is bis (dioctyl phosphino) ethylene glycol titanate; the polymerization degree of the PVA is 1600.
Examples 1 to 7:
examples 1 to 7 are substantially the same as examples 1 to 1 except that: the fluorosilane is perfluorodecyl trimethoxy silane; the silicate is ethyl orthosilicate; the titanate coupling agent is di (dioctyl phosphonate) ethylene glycol titanate; the polymerization degree of the PVA is 4000.
The second embodiment: preparation of super-hydrophobic cement-based flexible waterproof coating
1. The super-hydrophobic cement-based flexible waterproof coating comprises the following components in percentage by mass:
in order to investigate the influence of the mass ratio of the liquid material to the powder material on the performance of the prepared super-hydrophobic cement-based flexible waterproof coating material, the inventors performed the following experiments, i.e., example 2-1 to example 2-5.
Example 2-1:
the super-hydrophobic cement-based flexible waterproof coating consists of liquid material and powder material, wherein the mass ratio of the liquid material to the powder material is 1:3. The liquid material comprises the following raw materials in parts by weight: 75 parts of tertiary ethylene carbonate emulsion, 10 parts of carboxylic styrene-butadiene latex, 0.3 part of defoaming agent, 0.5 part of film-forming assistant, 0.2 part of bactericide and 14 parts of water; the powder material comprises the following raw materials in parts by weight: 45 parts of Portland cement, 5 parts of aluminate cement, 5 parts of gypsum, 1.2 parts of slow-release silane powder, 23 parts of quartz sand, 20 parts of coarse whiting, 0.5 part of thixotropic agent and 0.3 part of water reducing agent. Wherein the slow release type silane powder is the slow release type silane powder prepared in example 1; the film-forming additive is an alcohol ester dodecafilm-forming additive; the water reducing agent is a polycarboxylic acid water reducing agent; the thixotropic agent is high-molecular xanthan powder; the defoaming agent is a mineral oil defoaming agent.
The preparation method of the super-hydrophobic cement-based flexible waterproof coating comprises the following steps:
(a) Preparing a liquid material: stirring and uniformly mixing the vinyl versatate emulsion and the carboxylic styrene-butadiene latex, then adding the film-forming assistant, the defoaming agent, the bactericide and water while stirring, and uniformly mixing to obtain a liquid material;
(b) Preparing powder: uniformly stirring and mixing portland cement, aluminate cement, gypsum, slow-release silane powder, a thixotropic agent, coarse whiting, quartz sand and a water reducing agent to obtain powder;
(c) And adding the powder into the liquid material according to the mass ratio of the liquid material to the powder material, and uniformly mixing to obtain the super-hydrophobic cement-based flexible waterproof coating.
Example 2-2 to example 2-5:
examples 2-2 to 2-5 were substantially the same as example 2-1 except that the mass ratio of the liquid material to the powdery material was different, and the mass ratio of the liquid material to the powdery material was specifically shown in Table 1.
Tensile strength, elongation at break and adhesive strength properties of the waterproof coatings prepared in examples 2-1 to 2-5 were measured according to the test standard "polymer cement waterproof coating" GB/T23445-2009, and water absorption of the coating films of the waterproof coatings prepared in examples 2-1 to 2-5 were measured according to the test standard JC/T1017-2006 "polymer emulsion for architectural waterproof coatings", and the corresponding test results are shown in table 1. In order to detect the long-term water resistance of the waterproof coating, the performance of the waterproof material after no treatment and 1000h water invasion treatment are respectively carried out in the test. The non-treatment means that liquid materials and powder materials of the waterproof coating are mixed and stirred according to a certain mass ratio, the mixture is kept stand for 3min, the mixture is poured into a mold for coating, the coating is carried out for two times or three times, the maintenance is carried out for 96h under the standard condition, then the demolding is carried out, the reverse side of the demolded sample is upwards treated in an oven at the temperature of 40 +/-2 ℃ for 48h, the sample is taken out and cooled to the room temperature, a slicer is used for punching the sample into a test piece with the size of 20mm multiplied by 15mm, and then the performance of the test piece is tested. The soaking in water for 1000 hours is to mix and stir liquid materials and powder materials of the waterproof coating according to a certain mass ratio, stand for 3min, pour the mixture into a mold for coating, coat the mixture in two or three times, carry out curing for 96 hours under standard conditions, then carry out demolding, treat the reverse side of a demolded sample in an oven at 40 +/-2 ℃ for 48 hours, take out the sample and cool the sample to room temperature, prepare the sample into a test piece with the size of 20mm multiplied by 15mm, soak the test piece in water at 23 +/-2 ℃ for 1000 hours, and then test the performance of the test piece.
Method for testing water absorption of untreated coating: weighing the mass m of a test piece 0 Soaking for 168 +/-1 h, taking out, sucking the attached water on the surface of the test piece by using filter paper, and weighing the mass m again 1 Then coating water absorption rate = (m) according to the formula 1 -m 0 )/m 0 And calculating the water absorption of the coating film of the test piece.
A method for testing the water absorption of a coating film after 1000h of soaking in water comprises the following steps: weighing the mass m of a test piece 0 Soaking for 1000 +/-1 h, taking out, sucking the attached water on the surface of the test piece by using filter paper, and weighing the mass m again 1 Then coating the film with water absorption rate = (m) according to the formula 1 -m 0 )/m 0 And calculating the water absorption of the coating film of the test piece.
TABLE 1 test results of the performance of the waterproof coatings prepared by different mass ratios of liquid material to powder material
As can be seen from Table 1, the tensile strength of the waterproof coating is gradually reduced along with the improvement of the mass ratio of the liquid material to the powder material, and when the mass ratio of the liquid material to the powder material is 1; the breaking elongation of the waterproof coating gradually increases with the increase of the mass ratio of the liquid material to the powder material, the adhesive strength of the waterproof coating and the water absorption of a coating film tend to increase firstly and then decrease with the increase of the mass ratio of the liquid material to the powder material, and when the mass ratio of the liquid material to the powder material is 1:4 or 1. Therefore, the mass ratio of the liquid material to the powder material is preferably 1 (1 to 3), and more preferably 1:2, in consideration of the tensile strength, elongation at break, adhesive strength and water absorption of the waterproof coating material.
2. The research experiment of the amount of the carboxylic styrene-butadiene latex:
in order to investigate the influence of the amount of the carboxylated styrene-butadiene latex in the liquid material on the performance of the prepared super-hydrophobic cement-based flexible waterproof coating, the inventors carried out the following experiments, namely, example 3-1 to example 3-8.
Example 3-1:
the super-hydrophobic cement-based flexible waterproof coating consists of liquid material and powder material, wherein the mass ratio of the liquid material to the powder material is 1:2. The liquid material comprises the following raw materials in parts by weight: 80 parts of vinyl versatate, 0 part of carboxylic styrene-butadiene latex, 0.3 part of defoaming agent, 0.5 part of film-forming assistant, 0.2 part of bactericide and 14 parts of water; the powder material comprises the following raw materials in parts by weight: 45 parts of common 42.5 Portland cement, 5 parts of aluminate cement, 5 parts of gypsum, 1.2 parts of slow-release silane powder, 23 parts of quartz sand, 20 parts of triple superphosphate, 0.5 part of thixotropic agent and 0.3 part of polycarboxylic acid water reducing agent. Wherein the slow release silane powder is the slow release silane powder prepared in example 1. The film-forming additive is an alcohol ester dodecafilm-forming additive; the water reducing agent is a polycarboxylic acid water reducing agent; the thixotropic agent is high-molecular xanthan powder; the defoaming agent is a mineral oil defoaming agent.
The preparation method of the super-hydrophobic cement-based flexible waterproof coating comprises the following steps:
(a) Preparing a liquid material: stirring and uniformly mixing vinyl versatate and carboxylic styrene-butadiene latex, then adding a film-forming assistant, a defoaming agent, a bactericide and water while stirring, and uniformly mixing to obtain a liquid material;
(b) Preparing powder: adding portland cement, aluminate cement, gypsum, slow-release fluorosilane powder, a thixotropic agent, coarse whiting, quartz sand and a water reducing agent into stirring equipment, and uniformly stirring to obtain powder;
(c) When in use, the powder is added into the liquid material according to the mass ratio of the liquid material to the powder, and the mixture is stirred and mixed uniformly to obtain the super-hydrophobic cement-based flexible waterproof coating.
Example 3-2 to example 3-8:
examples 3-2 to 3-8 are substantially the same as example 3-1 except that: the amount of the carboxylated styrene-butadiene latex in the liquid material is different, and the specific amount of the carboxylated styrene-butadiene latex is shown in table 2.
Tensile strength, elongation at break and adhesive strength properties of the waterproof coatings prepared in examples 3-1 to 3-8 were measured according to the test standard "polymer cement waterproof coating" GB/T23445-2009, and water absorption rates of coating films of the waterproof coatings prepared in examples 3-1 to 3-8 were measured according to the test standard JC/T1017-2006 "polymer emulsion for architectural waterproof coatings", and the corresponding test results are shown in table 2.
TABLE 2 influence of amount of carboxylated styrene-butadiene latex on the Performance of the waterproof coating
As can be seen from table 2, the bonding strength of the waterproof coating gradually increases with the increase of the amount of the carboxylated styrene-butadiene latex, and thus it can be seen that the addition of the carboxylated styrene-butadiene latex can improve the bonding performance of the waterproof coating; in addition, with the increase of the amount of the carboxylated styrene-butadiene latex, the tensile strength and the elongation at break of the waterproof coating do not change obviously, and the water absorption of the coating film has a slight increase trend, so that the content of the carboxylated styrene-butadiene emulsion is preferably 5 to 20 parts, and more preferably 10 to 15 parts, by comprehensively considering the bonding strength and the water absorption of the waterproof coating.
3. Study experiment of the use amount of slow-release silane powder:
in order to investigate the influence of the amount of the slow-release silane powder in the powder on the performance of the prepared super-hydrophobic cement-based flexible waterproof coating, the inventors carried out the following experiments, namely, example 4-1 to example 4-8.
Example 4-1:
the super-hydrophobic cement-based flexible waterproof coating consists of a liquid material and a powder material, wherein the mass ratio of the liquid material to the powder material is 1:2. The liquid material comprises the following raw materials in parts by weight: 75 parts of vinyl versatate, 10 parts of carboxylic styrene-butadiene latex, 0.3 part of defoaming agent, 0.5 part of film-forming assistant, 0.2 part of bactericide and 14 parts of water; the powder material comprises the following raw materials in parts by weight: 45 parts of common 42.5 portland cement, 5 parts of aluminate cement, 5 parts of gypsum, 0 part of slow-release silane powder, 23 parts of quartz sand, 20 parts of triple superphosphate, 0.5 part of thixotropic agent and 0.3 part of polycarboxylic acid water reducing agent. Wherein the slow release type silane powder is the slow release type silane powder prepared in example 1; the film-forming additive is an alcohol ester dodecafilm-forming additive; the water reducing agent is a polycarboxylic acid water reducing agent; the thixotropic agent is high-molecular xanthan powder; the defoaming agent is a mineral oil defoaming agent.
The preparation method of the super-hydrophobic cement-based flexible waterproof coating comprises the following steps:
(a) Preparing a liquid material: stirring and uniformly mixing vinyl versatate and carboxylic styrene-butadiene latex, then adding a film-forming assistant, a defoaming agent, a bactericide and water while stirring, and uniformly mixing to obtain a liquid material;
(b) Preparing powder: adding portland cement, aluminate cement, gypsum, slow-release fluorosilane powder, a thixotropic agent, coarse whiting, quartz sand and a water reducing agent into stirring equipment, and uniformly stirring to obtain powder;
(c) When in use, the powder is added into the liquid material according to the mass ratio of the liquid material to the powder, and the mixture is stirred and mixed uniformly to obtain the super-hydrophobic cement-based flexible waterproof coating.
Example 4-2 to example 4-9:
examples 4-2 to 4-9 are substantially the same as example 4-1 except that: the dosage of the slow release type silane powder in the powder material, and the specific dosage of the slow release type silane powder are shown in table 3.
Tensile strength, elongation at break and adhesive strength properties of the waterproof coatings prepared in examples 4-1 to 4-9 were measured according to the test standard "polymer cement waterproof coating" GB/T23445-2009, and water absorption rates of coating films of the waterproof coatings prepared in examples 4-1 to 4-9 were measured according to the test standard JC/T1017-2006 "polymer emulsion for architectural waterproof coatings", and the corresponding test results are shown in table 3.
TABLE 3 discussion of the amount of slow-release silane powder
As can be seen from table 3, when the slow-release silane powder is not added, the water absorption of the prepared waterproof coating is very high, 10.91%, and the water absorption of the waterproof coating is obviously reduced with the increase of the use amount of the slow-release silane powder; when the using amount of the slow-release silane powder is 2.0 parts, the water absorption rate is only 1.26%, and compared with the waterproof coating without the slow-release silane powder, the water absorption rate of the waterproof coating is reduced by 88.5%, so that the water absorption rate of the waterproof coating can be reduced and the waterproof and water-resistant performances of the waterproof coating can be improved by adding the slow-release silane powder. In addition, when the dosage of the slow release type silane powder is in the range of 0.4-2.0 parts, the tensile strength, the elongation at break and the bonding strength of the waterproof coating are not obviously changed along with the increase of the dosage of the slow release type silane powder, and when the dosage of the slow release type silane powder exceeds 2.0 parts, the tensile strength of the waterproof coating has an obvious reduction trend, and the water absorption rate of a coating film is increased. Therefore, the amount of the silane powder to be used is preferably 0.4 to 2.0 parts, more preferably 1.2 to 2.0 parts.
4. Preparation of super-hydrophobic cement-based flexible waterproof coating
A super-hydrophobic cement-based flexible waterproof coating comprises a liquid material and a powder material, wherein the mass ratio of the liquid material to the powder material is 1:2; the liquid material comprises the following raw materials in parts by weight: 60-80 parts of tertiary ethylene carbonate emulsion, 5-20 parts of carboxylic styrene-butadiene latex, 0.2-0.6 part of defoaming agent, 0.2-1 part of film-forming assistant, 0.1-0.5 part of bactericide and 5-20 parts of water; the powder material comprises the following raw materials in parts by weight: 30 to 45 portions of Portland cement, 5 to 10 portions of aluminate cement, 5 to 10 portions of gypsum, 0.5 to 2 portions of slow-release silane powder, 20 to 40 portions of quartz sand, 5 to 20 portions of triple superphosphate, 0.1 to 0.5 portion of thixotropic agent and 0.2 to 0.5 portion of water reducing agent; wherein the film-forming additive is an alcohol ester dodecafilm-forming additive; the water reducing agent is a polycarboxylic acid water reducing agent; the thixotropic agent is high-molecular xanthan powder; the defoaming agent is a mineral oil defoaming agent.
The preparation method of the super-hydrophobic cement-based flexible waterproof coating comprises the following steps:
(a) Preparing a liquid material: stirring and uniformly mixing the vinyl versatate emulsion and the carboxylic styrene-butadiene latex, then adding the film-forming assistant, the defoaming agent, the bactericide and water while stirring, and uniformly mixing to obtain a liquid material;
(b) Preparing powder: uniformly stirring and mixing portland cement, aluminate cement, gypsum, slow-release silane powder, a thixotropic agent, coarse whiting, quartz sand and a water reducing agent to obtain powder;
(c) And adding the powder into the liquid material according to the mass ratio of the liquid material to the powder material, and uniformly mixing to obtain the super-hydrophobic cement-based flexible waterproof coating.
Table 4 specific examples of preparing super-hydrophobic cement-based flexible waterproof coating
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, but rather as the following description is intended to cover all modifications, equivalents and improvements falling within the spirit and scope of the present invention.
Claims (5)
1. The slow-release silane powder is characterized by being prepared from the following raw materials in parts by weight: 20-40 parts of fluorosilane, 5-10 parts of silicate ester, 5-10 parts of titanate coupling agent, 1-2 parts of OP-10, 80-2 parts of span, 20-30 parts of micro silicon powder, 5-10 parts of calcium carbonate whisker, 2-10 parts of PVA and 15-25 parts of water; the polymerization degree of the PVA is 1600-4000;
the preparation method of the slow-release silane powder comprises the following steps:
(1) Uniformly stirring OP-10, span 80, fluorosilane, silicate ester and titanate coupling agent to obtain uniform emulsion, adding PVA, silica micropowder, calcium carbonate whisker and water into the emulsion, and uniformly stirring to obtain slurry;
(2) And (2) drying the slurry prepared in the step (1) to prepare powder with the particle size of 0.1-0.4 mm, thus obtaining the slow-release silane powder.
2. The slow-release silane powder according to claim 1, wherein the fluorosilane is at least one of perfluorooctyltriethoxysilane and perfluorodecyltrimethoxysilane; the silicate is at least one of methyl orthosilicate and ethyl orthosilicate; the titanate coupling agent is a chelating titanate coupling agent.
3. The slow-release silane powder as claimed in claim 2, wherein the mesh number of the micro silicon powder is 1200-1500 meshes; the length of the calcium carbonate whisker is 20-80 mu m, and the diameter is 0.5-1.2 mu m.
4. The slow-release silane powder according to any one of claims 1 to 3, wherein the drying temperature in step (2) is 60 ℃ to 70 ℃.
5. Use of the slow-release silane powder of any one of claims 1 to 4 in the preparation of a water-repellent coating.
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