CN116333522B - Polymer cement waterproof paint with high adhesive property and preparation method thereof - Google Patents
Polymer cement waterproof paint with high adhesive property and preparation method thereof Download PDFInfo
- Publication number
- CN116333522B CN116333522B CN202310385756.1A CN202310385756A CN116333522B CN 116333522 B CN116333522 B CN 116333522B CN 202310385756 A CN202310385756 A CN 202310385756A CN 116333522 B CN116333522 B CN 116333522B
- Authority
- CN
- China
- Prior art keywords
- emulsion
- parts
- preparation
- mixed
- monomer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000011414 polymer cement Substances 0.000 title claims abstract description 53
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 239000003973 paint Substances 0.000 title abstract description 22
- 239000000839 emulsion Substances 0.000 claims abstract description 102
- 238000000576 coating method Methods 0.000 claims abstract description 44
- 239000011248 coating agent Substances 0.000 claims abstract description 42
- -1 modified acrylic ester Chemical class 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 29
- FHEHIXJLCWUPCZ-UHFFFAOYSA-N 4-prop-2-enylbenzene-1,2-diol Chemical compound OC1=CC=C(CC=C)C=C1O FHEHIXJLCWUPCZ-UHFFFAOYSA-N 0.000 claims description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 55
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 50
- 239000000178 monomer Substances 0.000 claims description 46
- 238000002156 mixing Methods 0.000 claims description 36
- 239000007864 aqueous solution Substances 0.000 claims description 29
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 25
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 25
- 239000003995 emulsifying agent Substances 0.000 claims description 24
- 239000003999 initiator Substances 0.000 claims description 23
- 239000000243 solution Substances 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 19
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 17
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical group SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 16
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 15
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 claims description 15
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 15
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 14
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 14
- 239000000047 product Substances 0.000 claims description 14
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 13
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 13
- 239000004568 cement Substances 0.000 claims description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- 239000000706 filtrate Substances 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 12
- CYEJMVLDXAUOPN-UHFFFAOYSA-N 2-dodecylphenol Chemical compound CCCCCCCCCCCCC1=CC=CC=C1O CYEJMVLDXAUOPN-UHFFFAOYSA-N 0.000 claims description 11
- 239000011874 heated mixture Substances 0.000 claims description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 10
- 239000013530 defoamer Substances 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 9
- 229920000570 polyether Polymers 0.000 claims description 9
- 239000012874 anionic emulsifier Substances 0.000 claims description 8
- 239000002518 antifoaming agent Substances 0.000 claims description 8
- 239000012875 nonionic emulsifier Substances 0.000 claims description 8
- 239000006174 pH buffer Substances 0.000 claims description 8
- 239000001632 sodium acetate Substances 0.000 claims description 8
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 6
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 4
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 4
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-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
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- 235000017281 sodium acetate Nutrition 0.000 claims description 4
- BHZOKUMUHVTPBX-UHFFFAOYSA-M sodium acetic acid acetate Chemical compound [Na+].CC(O)=O.CC([O-])=O BHZOKUMUHVTPBX-UHFFFAOYSA-M 0.000 claims description 4
- 235000017454 sodium diacetate Nutrition 0.000 claims description 4
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 4
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 claims description 4
- 150000001252 acrylic acid derivatives Chemical class 0.000 claims description 3
- 239000006179 pH buffering agent Substances 0.000 claims description 3
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 2
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 3
- 239000003469 silicate cement Substances 0.000 claims 1
- 238000004945 emulsification Methods 0.000 abstract description 8
- 239000000853 adhesive Substances 0.000 abstract description 7
- 239000003513 alkali Substances 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 230000006750 UV protection Effects 0.000 abstract description 2
- 239000002253 acid Substances 0.000 abstract description 2
- 239000008199 coating composition Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 21
- 239000008367 deionised water Substances 0.000 description 15
- 229910021641 deionized water Inorganic materials 0.000 description 15
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 14
- 239000004567 concrete Substances 0.000 description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 238000003756 stirring Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 238000007720 emulsion polymerization reaction Methods 0.000 description 9
- 239000011398 Portland cement Substances 0.000 description 8
- 239000004744 fabric Substances 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 235000017557 sodium bicarbonate Nutrition 0.000 description 7
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 description 6
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical group OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 6
- 238000006116 polymerization reaction Methods 0.000 description 6
- 230000001804 emulsifying effect Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 230000004224 protection Effects 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 150000003254 radicals Chemical class 0.000 description 3
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010556 emulsion polymerization method Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000011253 protective coating Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- WOAHJDHKFWSLKE-UHFFFAOYSA-N 1,2-benzoquinone Chemical compound O=C1C=CC=CC1=O WOAHJDHKFWSLKE-UHFFFAOYSA-N 0.000 description 1
- DUIOKRXOKLLURE-UHFFFAOYSA-N 2-octylphenol Chemical compound CCCCCCCCC1=CC=CC=C1O DUIOKRXOKLLURE-UHFFFAOYSA-N 0.000 description 1
- RNMDNPCBIKJCQP-UHFFFAOYSA-N 5-nonyl-7-oxabicyclo[4.1.0]hepta-1,3,5-trien-2-ol Chemical compound C(CCCCCCCC)C1=C2C(=C(C=C1)O)O2 RNMDNPCBIKJCQP-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229920001187 thermosetting 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1802—C2-(meth)acrylate, e.g. ethyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
-
- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/062—Copolymers with monomers not covered by C09D133/06
- C09D133/064—Copolymers with monomers not covered by C09D133/06 containing anhydride, COOH or COOM groups, with M being metal or onium-cation
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Polymerisation Methods In General (AREA)
Abstract
The invention discloses a polymer cement waterproof coating with high adhesive property and a preparation method thereof, belonging to the technical field of coating compositions. The preparation method of the invention firstly prepares the modified acrylic ester emulsion by means of pre-emulsification and seed emulsion synthesis, and then prepares the polymer cement waterproof coating with high adhesive property. The high-adhesion polymer cement waterproof paint prepared by the method has the advantages of ultraviolet resistance, acid and alkali resistance, good impermeability and high adhesive strength, and solves the problems of easy cracking and easy falling of the paint, thereby prolonging the service life of a building.
Description
Technical Field
The invention relates to the technical field of coating compositions, in particular to a polymer cement waterproof coating with high adhesive property and a preparation method thereof.
Background
Concrete is the most widely used building material today. It is easy to be exposed to severe environment for a long period of timeDamaged by chemical reactions or by physical effects of certain corrosive media. The relevant literature shows that H 2 O、O 2 、CO 2 And Cl - Play a critical role in the corrosive damage process of concrete, especially in the presence of water. The permeability of concrete is closely related to its durability, so waterproofing of concrete becomes particularly important. The improvement of the waterproof mainly comprises two means: basic protection and additional protection. The first method improves the compactness of concrete mainly by optimizing the mixing ratio or adding a waterproof agent; the second method involves a protective coating.
The concrete protective coating can effectively prevent water and other corrosive media from entering the concrete, and is a main method for improving the durability of the concrete. The surface film-forming coating is widely applied in the field of concrete protection so far, and a compact protective layer is formed on the surface of the concrete, so that corrosion factors are effectively prevented from penetrating into the concrete. The polymer cement waterproof paint is widely used because of its excellent waterproof property, but the problem that the paint is easy to fall off and has poor adhesive strength is also very prominent.
The existing polymerized cement waterproof paint cannot give consideration to the characteristic of high adhesion on the basis of water resistance, and is easy to cause potential safety hazards and service time period of many buildings, so that the paint with high waterproof adhesion strength has good application prospect.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, in a first aspect of the present invention, there is provided a method for preparing a high-adhesion polymer cement waterproof paint which is stable in emulsion polymerization system and has good fluidity, comprising the steps of:
(1) Preparation of stable pre-emulsion:
mixing and preheating water, a mixed emulsifier, a pH buffer and a molecular weight regulator; adding a mixed acrylic acid monomer and 4-allylcatechol into a preheated mixture, and uniformly mixing to obtain a stable pre-emulsion;
(2) Preparing seed emulsion:
mixing water, mixed emulsifier, pH buffer and molecular weight regulator, and heating; adding an initiator solution, a mixed acrylic monomer and 4-allylcatechol into the heated mixture and reacting to obtain seed emulsion;
(3) Preparation of modified acrylate emulsion:
additionally taking an initiator solution, heating and adding the initiator solution and the stable pre-emulsion to the seed emulsion at the temperature to react; after the reaction, carrying out heat preservation, cooling, regulating the pH value of the product, filtering and collecting filtrate to obtain modified acrylic ester emulsion;
(4) Preparation of a polymer cement waterproof coating with high adhesive property:
and mixing the modified acrylic ester emulsion, water and cement uniformly, then adding a defoaming agent into the mixture, and continuing to mix until the components are dispersed uniformly to obtain the polymer cement waterproof coating with high bonding performance.
Preferably, the specific method of the step (1) is as follows, in parts by weight: mixing 70-90 parts of water, 2-3 parts of mixed emulsifier containing anionic emulsifier and 3-6 parts of nonionic emulsifier, 0.4-0.6 part of pH buffer and 2-4 parts of molecular weight regulator and preheating to 35-45 ℃; adding 100-130 parts of soft monomer, 50-70 parts of hard monomer, 6-8 parts of functional monomer, 3-4 parts of 4-allylcatechol into the preheated mixture within 40-50 min, and uniformly mixing to obtain the stable pre-emulsion.
Further preferably, the anionic emulsifier is at least one of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and sodium dodecyl sulfonate; the nonionic emulsifier is at least one of dodecyl phenol polyoxyethylene ether, polyvinyl alcohol, nonylphenol polyoxyethylene ether and octylphenol polyoxyethylene.
Further preferably, the pH buffer is at least one of sodium bicarbonate, sodium hydrogen acetate, disodium hydrogen phosphate, sodium acetate, and citric acid.
Further preferably, the molecular weight regulator is at least one of tertiary mercaptan, mercaptan ester and mercaptan ether.
Further preferably, the soft monomer is at least one of butyl acrylate and ethyl acrylate; the hard monomer is at least one of methyl methacrylate and ethyl methacrylate; the functional monomer is at least one of acrylic acid, methacrylic acid and acrylamide.
Preferably, the specific method of the step (2) is as follows, in parts by weight: mixing 50-70 parts of water, a mixed emulsifier containing 0.1-0.5 part of anionic emulsifier and 0.3-0.7 part of nonionic emulsifier, 0.4-0.6 part of pH buffering agent and 0.2-0.4 part of molecular weight regulator and heating to 70-90 ℃; and synchronously adding 2-4 parts of initiator solution, mixed acrylic acid monomer containing 10-14 parts of soft monomer, 5-8 parts of hard monomer and 0.5-1 part of functional monomer and 0.2-0.5 part of 4-allylcatechol into the heated mixture, and reacting for 20-40 min to obtain seed emulsion.
Further preferably, the initiator in the initiator solution is at least one of potassium persulfate and ammonium persulfate.
Still more preferably, the initiator solution is an aqueous solution of an initiator, wherein the mass percent concentration of the initiator is 3-7%.
Preferably, the specific method of the step (3) is as follows, in parts by weight: taking 25-30 parts of initiator solution, heating the initiator solution and the stable pre-emulsion to 80-90 ℃ and synchronously adding the initiator solution and the stable pre-emulsion into the seed emulsion for 3-4 hours at the temperature to perform reaction; after the reaction, the modified acrylic ester emulsion is obtained by heat preservation for 40 to 50min, natural cooling for 10 to 20min, adjusting the pH value of the product to 7 to 9, and filtering and collecting the filtrate.
Further preferably, the pH of the product is adjusted by a pH adjuster, which is at least one of ammonia, sodium hydroxide, potassium hydroxide.
Preferably, the specific method of the step (4) is as follows, in parts by weight: and mixing 90-130 parts of the modified acrylic ester emulsion, 5-10 parts of water and 100-140 parts of cement uniformly, then adding 1-5 parts of defoamer into the mixture, and continuing to mix until the components are dispersed uniformly to obtain the polymer cement waterproof coating with high adhesive property.
Further preferably, the cement is at least one of ordinary Portland cement of type P.I42.5 and 42.5R sulphoaluminate cement.
Further preferably, the defoaming agent is at least one of polyether defoaming agent and organic silicon defoaming agent.
According to the preparation method provided by the invention, water is selected as a dispersion medium, and the anionic emulsifier and the nonionic emulsifier are selected, so that the stability of emulsion can be improved, the anionic emulsifier is adsorbed on the surfaces of polymer particles and ionized to form a surface negative layer, and the electrostatic repulsive force keeps a system stable; the nonionic emulsifier is adsorbed on the particle surface to form an elastic interface film, and the film is used for preventing colloidal particles from coagulating to form two protective 'barriers' with completely different properties. A pH buffer to maintain the pH of the emulsion constant during polymerization; the pH adjustor adjusts the pH of the polymer emulsion to be within a proper range. The molecular weight regulator can react with free radical to terminate active chain, and the regulator molecule itself forms a new free radical, which can reduce the molecular weight of polymer without affecting the polymerization rate, and avoid the deterioration of the processability of polymer caused by too high molecular weight in the polymerization process. The addition of the initiator may control the reaction rate of the emulsion polymerization system.
The copolymer with better cohesive strength and higher use temperature can be produced after the soft monomer and the hard monomer added in the emulsion polymerization process are copolymerized, and the addition of a small amount of functional monomer can also improve the polymerization process and the stability in the polymerization process. In addition, 4-allyl catechol is added in the emulsion polymerization process, catechol groups are introduced, on one hand, phenolic hydroxyl groups in the 4-allyl catechol are oxidized into quinone, the oxidized 4-allyl catechol and unoxidized 4-allyl catechol are crosslinked, disproportionation reaction is carried out between the catechol structure and the o-benzoquinone to generate semi-quinone free radicals, and then coupling is carried out to form crosslinking bonds, so that the formed high molecular network polymer is deeply self-crosslinked, firm and flexible, and the cohesive force between the polymer cement coating and a concrete matrix is improved. On the other hand in the presence of Ca 2+ Under the condition, catechol groups can be bonded withCoordination to form Ca 2+ Catechol complex realizes balance of oxidation and coordination, so that the adhesive force between the polymer cement coating and the concrete body is greatly enhanced.
The invention synthesizes polymer emulsion by utilizing a monomer pre-emulsification semi-continuous seed emulsion polymerization mode, and the performance is better. When the pre-emulsification process is adopted, monomer beads formed in the stirring process of the monomer can not adsorb emulsifying agents from the periphery, so that the system of the emulsion is more stable in the polymerization process, and gel is reduced; in addition, the mixed monomers can be uniformly mixed by the pre-emulsification process, which is beneficial to the normal operation of emulsion polymerization. The final emulsion particle size distribution of the emulsion obtained by the seed emulsion polymerization method is narrow, which is beneficial to improving the rheological property of the emulsion; in addition, by using a seed emulsion polymerization method, the particle structure can be designed to produce a polymer emulsion having a heterogeneous or heterogeneous structure and having an interpenetrating network structure, giving the polymer emulsion a special function. Furthermore, the synthesized modified acrylic ester emulsion and cement are combined to form an interpenetrating network structure which is mutually penetrated, crosslinked and solidified, so that the coating has a flexible network of an organic polymer material and a network structure of an inorganic cementing material. Thus, moisture can be prevented from carrying corrosion factors into the interior of the coating, further enhancing the corrosion resistance of the polymer cement coating.
In a second aspect of the invention, a polymer cement waterproof coating with high binding power, difficult falling, cracking and aging resistance is provided, and the polymer cement waterproof coating with high binding performance is prepared by adopting the preparation method provided by the first aspect of the invention.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the preparation method adopts a mode of combining pre-emulsification and seed emulsion polymerization technology in emulsion synthesis, ensures that an emulsion polymerization system is more stable, is not easy to generate gel, and ensures good fluidity of emulsion; in the emulsion polymerization process, catechol groups are introduced through 4-allyl catechol, so that the cohesive force between the polymer cement coating and the concrete surface is greatly improved, the coating is not easy to fall off and crack, and the building is effectively protected; in addition, the molecules of the modified acrylic ester emulsion obtained by the method do not contain C=C unsaturated bonds, the molecules are relatively stable, and the material aging caused by fracture degradation due to interference of external heat energy, ultraviolet rays and ozone is not easy to occur, so that the service life of a building is further prolonged.
2. The polymer cement waterproof paint with high adhesive property has strong adhesive force, is not easy to fall off, crack and resist aging, and has excellent waterproof property.
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention. The experimental methods, in which specific conditions are not noted in the following examples, were selected according to conventional methods and conditions, or according to the commercial specifications.
Example 1
The preparation method of the polymer cement waterproof paint with high adhesive property comprises the following steps:
(1) Adding 80g of deionized water, a mixed emulsifier containing 2.7g of sodium dodecyl sulfate and 4.5g of dodecylphenol polyoxyethylene ether, 0.5g of sodium bicarbonate and 3g of tertiary mercaptan into a pre-emulsifying tank, mixing at the speed of 450rpm and preheating to 40 ℃ in a water bath; a mixed acrylic monomer containing 108g of ethyl acrylate, 54g of ethyl methacrylate and 6.3g of methacrylic acid and 3.6g of 4-allylcatechol are added into the preheated mixture at a constant speed within 45min and uniformly mixed to obtain a stable pre-emulsion;
(2) 60g of deionized water, a mixed emulsifier containing 0.3g of sodium dodecyl sulfate and 0.5g of dodecylphenol polyoxyethylene ether, 0.5g of sodium bicarbonate and 0.3g of tertiary mercaptan are added into a four-necked flask, stirred and mixed at a speed of 350rpm and heated to 80 ℃ in a water bath; synchronously adding 3g of ammonium persulfate aqueous solution with the mass percent concentration of 5%, mixed acrylic acid monomer containing 12g of ethyl acrylate, 6g of ethyl methacrylate and 0.7g of methacrylic acid and 0.4g of 4-allyl catechol into the heated mixture, and reacting for 30min to obtain seed emulsion;
(3) Taking 27g of ammonium persulfate aqueous solution with the mass percent concentration of 5%, heating the ammonium persulfate aqueous solution and the stable pre-emulsion to 85 ℃ and synchronously adding the ammonium persulfate aqueous solution and the stable pre-emulsion into the seed emulsion at a constant speed within 3 hours at the temperature to perform a reaction; after the reaction, preserving heat for 45min, naturally cooling for 15min, regulating the pH value of the product to 7-9 by ammonia water, filtering by 120-mesh filter cloth, and collecting filtrate to obtain modified acrylic ester emulsion;
(4) And sequentially adding 110g of the modified acrylic ester emulsion, 8g of water and 120g of P.I42.5 ordinary Portland cement into a stirring tank, uniformly mixing, then adding 3g of polyether defoamer into the mixture, and continuously mixing until all the components are uniformly dispersed, thus obtaining the polymer cement waterproof coating with high bonding performance.
The embodiment also provides the polymer cement waterproof coating with high adhesive property prepared by the method.
Example 2
The preparation method of the polymer cement waterproof paint with high adhesive property comprises the following steps:
(1) Adding 80g of deionized water, a mixed emulsifier containing 2.7g of sodium dodecyl sulfate and 4.5g of dodecylphenol polyoxyethylene ether, 0.5g of sodium bicarbonate and 3g of tertiary mercaptan into a pre-emulsifying tank, mixing at the speed of 450rpm and preheating to 40 ℃ in a water bath; a mixed acrylic monomer containing 108g of ethyl acrylate, 54g of ethyl methacrylate and 6.3g of methacrylic acid and 3.6g of 4-allylcatechol are added into the preheated mixture at a constant speed within 45min and uniformly mixed to obtain a stable pre-emulsion;
(2) 60g of deionized water, a mixed emulsifier containing 0.3g of sodium dodecyl sulfate and 0.5g of dodecylphenol polyoxyethylene ether, 0.5g of sodium bicarbonate and 0.3g of tertiary mercaptan are added into a four-necked flask, stirred and mixed at a speed of 350rpm and heated to 80 ℃ in a water bath; synchronously adding 3g of ammonium persulfate aqueous solution with the mass percent concentration of 5%, mixed acrylic acid monomer containing 12g of ethyl acrylate, 6g of ethyl methacrylate and 0.7g of methacrylic acid and 0.4g of 4-allyl catechol into the heated mixture, and reacting for 30min to obtain seed emulsion;
(3) Taking 27g of ammonium persulfate aqueous solution with the mass percent concentration of 5%, heating to 85 ℃, and synchronously adding the ammonium persulfate aqueous solution and the stable pre-emulsion to the seed emulsion at a constant speed within 3 hours at the temperature to react; after the reaction, preserving heat for 45min, naturally cooling for 15min, regulating the pH value of the product to 7-9 by ammonia water, filtering by 120-mesh filter cloth, and collecting filtrate to obtain modified acrylic ester emulsion;
(4) 130g of the modified acrylic ester emulsion, 8g of water and 120g of P.I42.5 ordinary Portland cement are sequentially added into a stirring tank, uniformly mixed, then 3g of polyether defoamer is added into the mixture, and the mixture is continuously mixed until all components are uniformly dispersed, so that the polymer cement waterproof coating with high bonding performance is obtained.
The embodiment also provides the polymer cement waterproof coating with high adhesive property prepared by the method.
Example 3
The preparation method of the polymer cement waterproof paint with high adhesive property comprises the following steps:
(1) Adding 80g of deionized water, a mixed emulsifier containing 2.7g of sodium dodecyl sulfate and 4.5g of dodecylphenol polyoxyethylene ether, 0.5g of sodium bicarbonate and 3g of tertiary mercaptan into a pre-emulsifying tank, mixing at the speed of 450rpm and preheating to 40 ℃ in a water bath; a mixed acrylic monomer containing 108g of ethyl acrylate, 54g of ethyl methacrylate and 6.3g of methacrylic acid and 3.6g of 4-allylcatechol are added into the preheated mixture at a constant speed within 45min and uniformly mixed to obtain a stable pre-emulsion;
(2) 60g of deionized water, a mixed emulsifier containing 0.3g of sodium dodecyl sulfate and 0.5g of dodecylphenol polyoxyethylene ether, 0.5g of sodium bicarbonate and 0.3g of tertiary mercaptan are added into a four-necked flask, stirred and mixed at a speed of 350rpm and heated to 80 ℃ in a water bath; synchronously adding 3g of ammonium persulfate aqueous solution with the mass percent concentration of 5%, mixed acrylic acid monomer containing 12g of ethyl acrylate, 6g of ethyl methacrylate and 0.7g of methacrylic acid and 0.4g of 4-allyl catechol into the heated mixture, and reacting for 30min to obtain seed emulsion;
(3) Taking 27g of ammonium persulfate aqueous solution with the mass percent concentration of 5%, heating to 85 ℃, and synchronously adding the ammonium persulfate aqueous solution and the stable pre-emulsion to the seed emulsion at a constant speed within 3 hours at the temperature to react; after the reaction, preserving heat for 45min, naturally cooling for 15min, regulating the pH value of the product to 7-9 by ammonia water, filtering by 120-mesh filter cloth, and collecting filtrate to obtain modified acrylic ester emulsion;
(4) And sequentially adding 90g of the modified acrylic ester emulsion, 8g of water and 120g of P.I42.5 ordinary Portland cement into a stirring tank, uniformly mixing, then adding 3g of polyether defoamer into the mixture, and continuously mixing until all the components are uniformly dispersed, thus obtaining the polymer cement waterproof coating with high bonding performance.
The embodiment also provides the polymer cement waterproof coating with high adhesive property prepared by the method.
Example 4
The preparation method of the polymer cement waterproof paint with high adhesive property comprises the following steps:
(1) 70g of deionized water, a mixed emulsifier containing 2g of sodium dodecyl benzene sulfonate and 3g of polyvinyl alcohol, 0.4g of sodium hydrogen acetate and 2g of mercaptan ester are added into a pre-emulsification tank, mixed at the speed of 450rpm and preheated to 35 ℃ in a water bath; adding 100g of butyl acrylate, 50g of methyl methacrylate, 6g of acrylic acid mixed acrylic acid monomer and 3g of 4-allyl catechol into a preheated mixture at a constant speed within 40min, and uniformly mixing to obtain a stable pre-emulsion;
(2) 50g of deionized water, a mixed emulsifier containing 0.1g of sodium dodecyl benzene sulfonate and 0.3g of polyvinyl alcohol, 0.4g of sodium hydrogen acetate and 0.2g of mercaptan ester are added into a four-necked flask, stirred and mixed at a speed of 350rpm and heated to 70 ℃ in a water bath; synchronously adding 2g of potassium persulfate aqueous solution with the mass percent concentration of 5%, mixed acrylic acid monomer containing 10g of butyl acrylate, 5g of methyl methacrylate and 0.5g of acrylic acid and 0.2g of 4-allylcatechol into the heated mixture, and reacting for 20min to obtain seed emulsion;
(3) Taking 25g of potassium persulfate aqueous solution with the mass percent concentration of 5%, heating the potassium persulfate aqueous solution and the stable pre-emulsion to 80 ℃ and synchronously adding the potassium persulfate aqueous solution and the stable pre-emulsion into the seed emulsion at a constant speed within 3h at the temperature to perform reaction; after the reaction, preserving heat for 40min, naturally cooling for 10min, regulating the pH value of a product to be 7-9 through sodium hydroxide, filtering with 120-mesh filter cloth, and collecting filtrate to obtain modified acrylic ester emulsion;
(4) And sequentially adding 90g of the modified acrylic ester emulsion, 5g of water and 110g of 42.5R sulfoaluminate cement into a stirring tank, uniformly mixing, then adding 1g of an organosilicon defoamer into the mixture, and continuously mixing until all the components are uniformly dispersed, thus obtaining the polymer cement waterproof coating with high adhesive property.
The embodiment also provides the polymer cement waterproof coating with high adhesive property prepared by the method.
Example 5
The preparation method of the polymer cement waterproof paint with high adhesive property comprises the following steps:
(1) 90g of deionized water, a mixed emulsifier containing 3g of sodium dodecyl sulfate and 6g of polyoxyethylene nonylphenol ether, 0.6g of disodium hydrogen phosphate and 4g of mercaptan ether are added into a pre-emulsifying tank, mixed at the rotating speed of 450rpm and preheated to 45 ℃ in a water bath; adding 130g of ethyl acrylate, 70g of ethyl methacrylate, 8g of acrylamide, 4g of 4-allyl catechol into a preheated mixture at a constant speed within 50min, and uniformly mixing to obtain a stable pre-emulsion;
(2) 70g of deionized water, a mixed emulsifier containing 0.5g of sodium dodecyl sulfonate and 0.7g of polyoxypropylene ether, 0.6g of disodium hydrogen phosphate and 0.4g of mercaptan ether are added into a four-necked flask, stirred and mixed at the speed of 350rpm, and heated to 90 ℃ in a water bath; synchronously adding 4g of ammonium persulfate aqueous solution with the mass percent concentration of 5%, mixed acrylic acid monomer containing 14g of ethyl acrylate, 8g of ethyl methacrylate and 1g of acrylamide and 0.5g of 4-allylcatechol into the heated mixture, and reacting for 40min to obtain seed emulsion;
(3) Taking 30g of ammonium persulfate aqueous solution with the mass percent concentration of 5%, heating the ammonium persulfate aqueous solution and the stable pre-emulsion to 90 ℃ and synchronously adding the ammonium persulfate aqueous solution and the stable pre-emulsion into the seed emulsion at a constant speed within 4 hours at the temperature to perform reaction; after the reaction, preserving heat for 50min, naturally cooling for 20min, regulating the pH value of a product to be 7-9 by potassium hydroxide, filtering by 120-mesh filter cloth, and collecting filtrate to obtain modified acrylic ester emulsion;
(4) 130g of the modified acrylic ester emulsion, 10g of water and 140g of P.I42.5 ordinary Portland cement are sequentially added into a stirring tank, uniformly mixed, and then 5g of polyether defoamer is added into the mixture, and the mixture is continuously mixed until all the components are uniformly dispersed, so that the polymer cement waterproof coating with high bonding performance is obtained.
The embodiment also provides the polymer cement waterproof coating with high adhesive property prepared by the method.
Example 6
The preparation method of the polymer cement waterproof paint with high adhesive property comprises the following steps:
(1) Adding 80g of deionized water, a mixed emulsifier containing 2.7g of sodium dodecyl sulfonate and 4.5g of octyl phenol polyoxyethylene ether, 0.5g of sodium acetate and 3g of tertiary mercaptan into a pre-emulsifying tank, mixing at the speed of 450rpm and preheating to 40 ℃ in a water bath; a mixed acrylic monomer containing 108g of ethyl acrylate, 54g of ethyl methacrylate and 6.3g of methacrylic acid and 3.6g of 4-allylcatechol are added into the preheated mixture at a constant speed within 45min and uniformly mixed to obtain a stable pre-emulsion;
(2) 60g of deionized water, a mixed emulsifier containing 0.3g of sodium dodecyl sulfate and 0.5g of ethylene oxide, 0.5g of sodium acetate and 0.3g of tertiary mercaptan are added into a four-necked flask, stirred and mixed at a speed of 350rpm and heated to 80 ℃ in a water bath; 3g of ammonium persulfate aqueous solution with the mass percentage concentration of 3%, mixed acrylic acid monomer containing 12g of ethyl acrylate, 6g of ethyl methacrylate and 0.7g of methacrylic acid and 0.4g of 4-allyl catechol are synchronously added into the heated mixture and reacted for 30min to obtain seed emulsion;
(3) Taking 27g of ammonium persulfate aqueous solution with the mass percent concentration of 3%, heating the ammonium persulfate aqueous solution and the stable pre-emulsion to 85 ℃ and synchronously adding the ammonium persulfate aqueous solution and the stable pre-emulsion into the seed emulsion at a constant speed within 3 hours at the temperature to perform a reaction; after the reaction, preserving heat for 45min, naturally cooling for 15min, regulating the pH value of the product to 7-9 by ammonia water, filtering by 120-mesh filter cloth, and collecting filtrate to obtain modified acrylic ester emulsion;
(4) And sequentially adding 110g of the modified acrylic ester emulsion, 8g of water and 120g of P.I42.5 ordinary Portland cement into a stirring tank, uniformly mixing, then adding 3g of polyether defoamer into the mixture, and continuously mixing until all the components are uniformly dispersed, thus obtaining the polymer cement waterproof coating with high bonding performance.
The embodiment also provides the polymer cement waterproof coating with high adhesive property prepared by the method.
Example 7
The preparation method of the polymer cement waterproof paint with high adhesive property comprises the following steps:
(1) Adding 80g of deionized water, a mixed emulsifier containing 2.7g of sodium dodecyl sulfate and 4.5g of dodecylphenol polyoxyethylene ether, 0.5g of citric acid and 3g of tertiary mercaptan into a pre-emulsification tank, mixing at the speed of 450rpm and preheating to 40 ℃ in a water bath; a mixed acrylic monomer containing 108g of ethyl acrylate, 54g of ethyl methacrylate and 6.3g of methacrylic acid and 3.6g of 4-allylcatechol are added into the preheated mixture at a constant speed within 45min and uniformly mixed to obtain a stable pre-emulsion;
(2) 60g of deionized water, a mixed emulsifier containing 0.3g of sodium dodecyl sulfate and 0.5g of dodecylphenol polyoxyethylene ether, 0.5g of citric acid and 0.3g of tertiary mercaptan are added into a four-necked flask, stirred and mixed at a speed of 350rpm and heated to 80 ℃ in a water bath; synchronously adding 3g of ammonium persulfate aqueous solution with the mass percentage concentration of 7%, mixed acrylic acid monomer containing 12g of ethyl acrylate, 6g of ethyl methacrylate and 0.7g of methacrylic acid and 0.4g of 4-allyl catechol into the heated mixture, and reacting for 30min to obtain seed emulsion;
(3) Taking 27g of ammonium persulfate aqueous solution with the mass percent concentration of 7%, heating the ammonium persulfate aqueous solution and the stable pre-emulsion to 85 ℃ and synchronously adding the ammonium persulfate aqueous solution and the stable pre-emulsion into the seed emulsion at a constant speed within 3 hours at the temperature to perform a reaction; after the reaction, preserving heat for 45min, naturally cooling for 15min, regulating the pH value of the product to 7-9 by ammonia water, filtering by 120-mesh filter cloth, and collecting filtrate to obtain modified acrylic ester emulsion;
(4) And sequentially adding 110g of the modified acrylic ester emulsion, 8g of water and 120g of P.I42.5 ordinary Portland cement into a stirring tank, uniformly mixing, then adding 3g of polyether defoamer into the mixture, and continuously mixing until all the components are uniformly dispersed, thus obtaining the polymer cement waterproof coating with high bonding performance.
The embodiment also provides the polymer cement waterproof coating with high adhesive property prepared by the method.
Comparative example 1
This comparative example was substantially identical to example 1, except that in the preparation method of this comparative example, 4-allylcatechol was not added in the corresponding steps, and the remaining conditions were unchanged.
Comparative example 2
The preparation method of the polymer cement waterproof paint with high adhesive property comprises the following steps:
(1) Adding 140g of deionized water, a mixed emulsifier containing 3g of sodium dodecyl sulfate and 5g of dodecylphenol polyoxyethylene ether, 1g of sodium bicarbonate and 3.3g of tertiary mercaptan into a three-neck flask, and uniformly stirring; adding 120g of ethyl acrylate, 60g of ethyl methacrylate, 7g of methacrylic acid mixed acrylic acid monomer, 4g of 4-allylcatechol and 30g of ammonium persulfate aqueous solution with the mass percent concentration of 5% into a three-neck flask, heating to 85 ℃ and reacting for 3 hours, preserving heat for 45 minutes, naturally cooling for 15 minutes, regulating the pH value of a product to be 7-9 by ammonia water, filtering by using 120-mesh filter cloth, and collecting filtrate to obtain modified acrylic ester emulsion;
(2) And sequentially adding 110g of modified acrylic ester emulsion, 8g of water and 120g of P.I42.5 ordinary Portland cement into a stirring tank, uniformly mixing, then adding 3g of polyether defoamer into the mixture, and continuously mixing until all components are uniformly dispersed, thus obtaining the polymer cement waterproof coating with high adhesive property.
The comparative example also provides a high-adhesion polymer cement waterproof coating prepared by the method.
Test example 1
The high-adhesion polymer cement waterproof coatings prepared in examples 1 to 3 and comparative examples 1 to 2 were subjected to performance tests, according to GB/T16777-2008,the polymer cement waterproof paint was tested for tensile strength, elongation at break, adhesive strength and low temperature flexibility. The test pieces are respectively put into a ultraviolet radiation degree of 0.89W/m 2 Irradiating at constant temperature of (45+ -2deg.C) for 240H, soaking in 0.1% sodium hydroxide (NaOH) solution at (23+ -2deg.C) for 7d, and soaking in 2% sulfuric acid (H) at (23+ -2deg.C 2 SO 4 ) 7d in the solution, cutting a dumbbell I-type test piece meeting the GB/T528 requirement after treatment, carrying out a tensile test, clamping the test piece on a testing machine, and stretching until the tensile strength and the elongation at break of the test piece are achieved under ultraviolet aging, acidity and alkalinity conditions; installing the test piece on a testing machine, keeping the center line of the surface of the test piece in the vertical direction and the center of a clamp of the testing machine on the same line, stretching until the test piece is damaged, and recording the maximum tensile force of the test piece as the bonding strength of the test piece; placing the test piece and the bent plate or the round bar into the freezing solution of a low-temperature refrigerator adjusted to-10 ℃, keeping the thermometer probe and the test piece at the same horizontal position at-10 ℃ for 1h, bending the test piece around the round bar or the bent plate for 180 degrees in the freezing solution within 3s, and observing whether cracks exist on the surface of the test piece by naked eyes. The impermeability of the polymer cement paint is tested according to the GB/T23445-2009 standard, a test piece is placed into a penetrometer, the surface of the test piece shows water permeability, and the water pressure (MPa) at that time is recorded.
The results of the performance test of the high adhesion polymer cement waterproof paint are shown in Table 1.
Table 1 results of Performance test of Polymer Cement Water-proof coatings with high adhesive Properties prepared in examples 1 to 3 and comparative examples 1 to 2
As can be seen from the test results in Table 1, example 1 shows an experimental scheme with superior overall performance. In example 2, the amount of the modified acrylate emulsion was increased, but the elongation at break was increased, but after the amount of the emulsion was increased, the cement ratio was decreased, resulting in a decrease in tensile strength of the coating film. In example 3, the amount of emulsion was reduced, and the performance of the paint was also poor after the liquid-powder ratio was lowered. In comparative example 1, the addition of 4-allylcatechol did not result in a decrease in the adhesive strength of the coating film and a deterioration in the weather resistance of the coating film. The emulsion is prepared in a manner that the pre-emulsification and the seed emulsion synthesis are not performed in comparative example 2, so that the stability of an emulsion system is poor, the gel rate is increased, and the performance of a finished product is further affected.
According to design requirements, the tensile strength retention rate of the embodiment is more than or equal to 80% after ultraviolet treatment, more than or equal to 60% after acid treatment and more than or equal to 60% after alkali treatment; the elongation at break is more than or equal to 150% after ultraviolet treatment, more than or equal to 150% after acid treatment, and more than or equal to 150% after alkali treatment; the impermeability test is more than or equal to 0.6MPa; the bonding strength is more than or equal to 0.5MPa. In conclusion, the polymer cement waterproof coating with high adhesive property prepared by the invention has the advantages of ultraviolet resistance, acid and alkali resistance, good impermeability and high adhesive strength, and overcomes the problems of easy cracking and easy falling of the coating.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (8)
1. The preparation method of the polymer cement waterproof coating with high adhesive property is characterized by comprising the following steps of:
(1) Preparation of stable pre-emulsion:
mixing and preheating water, a mixed emulsifier, a pH buffer and a molecular weight regulator; adding a mixed acrylic acid monomer and 4-allylcatechol into a preheated mixture, and uniformly mixing to obtain a stable pre-emulsion;
(2) Preparing seed emulsion:
mixing water, mixed emulsifier, pH buffer and molecular weight regulator, and heating; adding an initiator solution, a mixed acrylic monomer and 4-allylcatechol into the heated mixture and reacting to obtain seed emulsion;
(3) Preparation of modified acrylate emulsion:
additionally taking an initiator solution, heating and adding the initiator solution and the stable pre-emulsion into the seed emulsion to react; after the reaction, carrying out heat preservation, cooling, regulating the pH value of the product, filtering and collecting filtrate to obtain modified acrylic ester emulsion;
(4) Preparation of a polymer cement waterproof coating with high adhesive property:
mixing the modified acrylic ester emulsion, water and cement uniformly, then adding a defoaming agent into the mixture, and continuing to mix until the components are dispersed uniformly to obtain the polymer cement waterproof coating with high bonding performance;
the specific method of the step (1) comprises the following steps of, by weight: mixing 70-90 parts of water, 2-3 parts of mixed emulsifier containing anionic emulsifier and 3-6 parts of nonionic emulsifier, 0.4-0.6 part of pH buffer and 2-4 parts of molecular weight regulator and preheating to 35-45 ℃; adding 100-130 parts of soft monomer, 50-70 parts of hard monomer, 6-8 parts of mixed acrylic monomer of functional monomer and 3-4 parts of 4-allylcatechol into the preheated mixture within 40-50 min, and uniformly mixing to obtain stable pre-emulsion;
the anionic emulsifier is at least one of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and sodium dodecyl sulfonate; the nonionic emulsifier is at least one of dodecyl phenol polyoxyethylene ether, polyvinyl alcohol, nonylphenol polyoxyethylene ether and octylphenol polyoxyethylene; the soft monomer is at least one of butyl acrylate and ethyl acrylate; the hard monomer is at least one of methyl methacrylate and ethyl methacrylate; the functional monomer is at least one of acrylic acid, methacrylic acid and acrylamide.
2. The method of manufacturing according to claim 1, characterized in that: the pH buffering agent is at least one of sodium bicarbonate, sodium hydrogen acetate, disodium hydrogen phosphate, sodium acetate and citric acid; the molecular weight regulator is at least one of tertiary mercaptan, mercaptan ester and mercaptan ether.
3. The preparation method according to claim 1, wherein the specific method of step (2) is as follows, in parts by weight: mixing 50-70 parts of water, a mixed emulsifier containing 0.1-0.5 part of anionic emulsifier and 0.3-0.7 part of nonionic emulsifier, 0.4-0.6 part of pH buffering agent and 0.2-0.4 part of molecular weight regulator and heating to 70-90 ℃; and synchronously adding 2-4 parts of initiator solution, mixed acrylic acid monomer containing 10-14 parts of soft monomer, 5-8 parts of hard monomer and 0.5-1 part of functional monomer and 0.2-0.5 part of 4-allylcatechol into the heated mixture, and reacting for 20-40 min to obtain seed emulsion.
4. The preparation method according to claim 1, wherein the specific method of the step (3) is as follows in parts by weight: taking 25-30 parts of initiator solution, heating to 80-90 ℃, and synchronously adding the initiator solution and the stable pre-emulsion into the seed emulsion for 3-4 hours at the temperature to react; after the reaction, the modified acrylic ester emulsion is obtained by heat preservation for 40 to 50min, natural cooling for 10 to 20min, adjusting the pH value of the product to 7 to 9, and filtering and collecting the filtrate.
5. The method of manufacturing according to claim 1, characterized in that: the initiator solution is an aqueous solution of an initiator, wherein the mass percentage concentration of the initiator is 3-7%; the initiator is at least one of potassium persulfate and ammonium persulfate.
6. The preparation method according to claim 1, wherein the specific method of the step (4) is as follows in parts by weight: and mixing 90-130 parts of the modified acrylic ester emulsion, 5-10 parts of water and 100-140 parts of cement uniformly, then adding 1-5 parts of defoamer into the mixture, and continuing to mix until the components are dispersed uniformly to obtain the polymer cement waterproof coating with high adhesive property.
7. The method of manufacturing according to claim 1, characterized in that: the cement is at least one of ordinary silicate cement with the model of P.I42.5 and 42.5R sulphoaluminate cement; the defoaming agent is at least one of polyether defoaming agent and organic silicon defoaming agent.
8. A polymer cement waterproof coating with high adhesive property is characterized in that: a preparation method according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310385756.1A CN116333522B (en) | 2023-04-12 | 2023-04-12 | Polymer cement waterproof paint with high adhesive property and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310385756.1A CN116333522B (en) | 2023-04-12 | 2023-04-12 | Polymer cement waterproof paint with high adhesive property and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116333522A CN116333522A (en) | 2023-06-27 |
| CN116333522B true CN116333522B (en) | 2024-01-09 |
Family
ID=86877172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310385756.1A Active CN116333522B (en) | 2023-04-12 | 2023-04-12 | Polymer cement waterproof paint with high adhesive property and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116333522B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437657A (en) * | 2018-09-14 | 2019-03-08 | 华南理工大学 | A kind of Diamond Search cement group water-proofing material polymerized emulsion and preparation method thereof |
| CN112159494A (en) * | 2020-08-28 | 2021-01-01 | 江苏康爱特环境工程集团有限公司 | Water-based road marking paint emulsion and preparation method thereof |
| CN115353761A (en) * | 2022-08-09 | 2022-11-18 | 湖北工业大学 | Polymer cement anticorrosive paint and preparation method thereof |
-
2023
- 2023-04-12 CN CN202310385756.1A patent/CN116333522B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437657A (en) * | 2018-09-14 | 2019-03-08 | 华南理工大学 | A kind of Diamond Search cement group water-proofing material polymerized emulsion and preparation method thereof |
| CN112159494A (en) * | 2020-08-28 | 2021-01-01 | 江苏康爱特环境工程集团有限公司 | Water-based road marking paint emulsion and preparation method thereof |
| CN115353761A (en) * | 2022-08-09 | 2022-11-18 | 湖北工业大学 | Polymer cement anticorrosive paint and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116333522A (en) | 2023-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112851850B (en) | Preparation method of silicon-acrylic emulsion for preparing polymer cement-based waterproof coating | |
| CN108047396B (en) | Multi-cation mud-resistant polycarboxylate superplasticizer and preparation method thereof | |
| CN110003400A (en) | A kind of silane coupler modified polycarboxylate water-reducer and preparation method thereof | |
| CN113549415A (en) | High-solid-content strippable water-based pressure-sensitive adhesive and preparation method thereof | |
| CN115197610A (en) | Waterproof coating with high water resistance and high bonding strength and preparation method thereof | |
| CN111019057B (en) | Viscosity-reducing polycarboxylate superplasticizer and preparation method thereof | |
| CN112812242B (en) | Viscosity regulator for concrete and preparation method thereof | |
| CN114044847B (en) | High-water-resistance and dirt-resistance acrylate emulsion and preparation method thereof | |
| CN116333522B (en) | Polymer cement waterproof paint with high adhesive property and preparation method thereof | |
| CN112409901B (en) | Waterborne polyurethane coating and preparation method thereof | |
| CN114163577A (en) | Viscosity-reducing water reducer and preparation method and application thereof | |
| CN110790875B (en) | Organic silicon modified acrylic emulsion adhesive and preparation method thereof | |
| CN108276532A (en) | A kind of stone material waterproof back mesh glue styrene-acrylic emulsion and preparation method thereof | |
| CN112708140A (en) | Early-strength cement dispersion polymer and preparation method thereof | |
| CN109384415B (en) | Preparation method of concrete anti-cracking reinforcing agent | |
| CN115353580A (en) | High-water-resistance alkali-resistance VAE emulsion, preparation method and application thereof, and waterproof coating | |
| CN115353761A (en) | Polymer cement anticorrosive paint and preparation method thereof | |
| CN111978455B (en) | Hydrophobic fluorine modified acrylic emulsion and preparation method and application thereof | |
| CN111393560B (en) | Acrylate emulsion for PVC floor glue and preparation method thereof | |
| CN113683736A (en) | Viscosity reduction type polycarboxylate superplasticizer for high-strength concrete and preparation method thereof | |
| JPS61127711A (en) | Production of acrylic copolymer having vinyl group-containing organosilicon group | |
| CN110982019A (en) | High-viscosity-reduction type polycarboxylic acid slump retaining agent and preparation method thereof | |
| CN111320719A (en) | High-permeability acrylic emulsion | |
| CN110724416A (en) | Preparation method of modified hydroxyl ester-based polymer emulsion | |
| CN114907521B (en) | Anti-dispersant for film-forming protection type underwater concrete and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |