CN114958124A - Polymer cement waterproof coating and preparation method thereof - Google Patents
Polymer cement waterproof coating and preparation method thereof Download PDFInfo
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- CN114958124A CN114958124A CN202210584965.4A CN202210584965A CN114958124A CN 114958124 A CN114958124 A CN 114958124A CN 202210584965 A CN202210584965 A CN 202210584965A CN 114958124 A CN114958124 A CN 114958124A
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- 238000000576 coating method Methods 0.000 title claims abstract description 70
- 239000011248 coating agent Substances 0.000 title claims abstract description 68
- 239000011414 polymer cement Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title abstract description 14
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 59
- 239000000945 filler Substances 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000000839 emulsion Substances 0.000 claims abstract description 36
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 20
- 229920000058 polyacrylate Polymers 0.000 claims abstract description 20
- 229920001577 copolymer Polymers 0.000 claims abstract description 18
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 10
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 10
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 9
- 229910021591 Copper(I) chloride Inorganic materials 0.000 claims abstract description 8
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 claims abstract description 8
- WIVXEZIMDUGYRW-UHFFFAOYSA-L copper(i) sulfate Chemical compound [Cu+].[Cu+].[O-]S([O-])(=O)=O WIVXEZIMDUGYRW-UHFFFAOYSA-L 0.000 claims abstract description 8
- 229940045803 cuprous chloride Drugs 0.000 claims abstract description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 32
- 239000000843 powder Substances 0.000 claims description 22
- 239000011398 Portland cement Substances 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 21
- -1 polyethylene Polymers 0.000 claims description 19
- 239000002904 solvent Substances 0.000 claims description 18
- 239000006004 Quartz sand Substances 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 17
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 12
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 12
- 239000004698 Polyethylene Substances 0.000 claims description 11
- 229920000573 polyethylene Polymers 0.000 claims description 11
- 239000003973 paint Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 5
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 235000011187 glycerol Nutrition 0.000 claims 5
- 238000004078 waterproofing Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 11
- 239000004205 dimethyl polysiloxane Substances 0.000 description 7
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 7
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 7
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 7
- PHQOGHDTIVQXHL-UHFFFAOYSA-N n'-(3-trimethoxysilylpropyl)ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCN PHQOGHDTIVQXHL-UHFFFAOYSA-N 0.000 description 5
- 239000011734 sodium Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000012752 auxiliary agent Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 125000003636 chemical group Chemical group 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
-
- 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
- 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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2262—Oxides; Hydroxides of metals of manganese
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2275—Ferroso-ferric oxide (Fe3O4)
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Wood Science & Technology (AREA)
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- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a polymer cement waterproof coating, which comprises aqueous polyurethane resin, a modified filler, aqueous polyacrylate emulsion, styrene-acrylic acid copolymer emulsion, cuprous sulfate, cuprous chloride and water; the compatibility of the organic component and the inorganic component is improved by adding the modified filler, so that a coating formed by the prepared polymer cement waterproof coating has a good interwoven network structure, and the coating has good water resistance and mechanical properties. The invention further modifies the styrene-acrylic acid copolymer emulsion by using a silane coupling agent, glycerol and nonylphenol polyethylene glycol ether, improves the water resistance and mechanical property of a coating formed by the polymer cement waterproof coating, and has the tensile strength of 4.9 MPa. The invention also provides a preparation method of the polymer cement waterproof coating.
Description
Technical Field
The invention belongs to the field of building materials, and particularly relates to a polymer cement waterproof coating and a preparation method thereof.
Background
The polymer cement waterproof paint is a double-component water-based waterproof functional paint which is compounded by taking polymer emulsion such as acrylic ester, ethylene-vinyl acetate and the like as an organic liquid material of a main component, taking fillers such as cement, quartz sand and the like as an inorganic powder material of the main component and adding an auxiliary agent. The polymer cement waterproof coating has good water resistance and mechanical property, so the polymer cement waterproof coating has wide application in the field of buildings. With the improvement of the performance requirements of the market on the polymer cement waterproof coating, the mechanical tensile strength of the polymer cement waterproof coating in the prior art is difficult to reach 3.7MPa, and the water-resistant impermeability is difficult to exceed 2MPa, so that the water resistance and the mechanical performance of the existing polymer cement waterproof coating still need to be further improved.
Disclosure of Invention
One of the purposes of the invention is to provide a polymer cement waterproof coating which has excellent water resistance and tensile strength by adding modified filler and optimizing raw material components.
The invention also aims to provide a preparation method of the polymer cement waterproof coating.
In order to realize the first invention, the following technical scheme is adopted:
a polymer cement waterproof coating comprises a component A and a component B; the component A comprises the following components in parts by weight: 20-40 parts of waterborne polyurethane resin, 100 parts of modified filler, 60-75 parts of waterborne polyacrylate emulsion and 20-30 parts of styrene-acrylic copolymer emulsion; the component B comprises: 1 part of cuprous sulfate, 0.5-2 parts of cuprous chloride and 10-20 parts of water;
the weight ratio of the component A to the component B is 100: 2-4;
the modified filler is prepared by modifying portland cement, calcium carbonate, quartz sand and clinker powder in a solvent through a silane coupling agent, polyethylene wax and polyacrylate.
The invention conception of the invention is as follows: modified filler is added into the polymer cement waterproof coating to improve the compatibility of each component; the modified filler is modified, and some organic chemical groups are introduced, so that the cross compatibility between organic components and inorganic components is improved, a coating formed by the prepared polymer cement waterproof coating has a good interwoven network structure, and the water resistance and the mechanical property of the coating are improved.
Moreover, on the basis of adding the modified filler, the inventor optimizes the raw material components and the dosage of the polymer cement waterproof coating through long-time experiments, so that the coating has better water resistance and mechanical property.
In one embodiment, the modified filler comprises the following raw materials in parts by weight: 100 parts of Portland cement, 1-10 parts of calcium carbonate, 5-20 parts of quartz sand, 8-20 parts of clinker powder, 10-20 parts of silane coupling agent, 5-10 parts of polyethylene wax and 10-20 parts of polyacrylate.
The solvent is a mixture of water and glycerol, wherein the weight ratio of the water to the glycerol is 10: 1-5.
The weight ratio of the solvent to the portland cement is 0.8-3: 1.
Specifically, the preparation method of the modified filler comprises the following steps: placing portland cement, calcium carbonate, quartz sand and clinker powder in a solvent, performing ultrasonic dispersion for 2-3 hours, adjusting the pH value to 7-9, slowly adding a silane coupling agent, polyethylene wax and polyacrylate, continuing ultrasonic dispersion for 1-2 hours, heating to 70-90 ℃, and reacting for 1-2 hours to obtain the modified filler.
Preferably, the clinker powder comprises the following chemical components in percentage by weight: 30-40% SiO 2 、6～10％Al 2 O 3 、7～12％BaO、8～13％CaO、7～12％ZnO、1～2％MgO、1～2％Fe 3 O 4 、0.5～1.5％Na 2 O, the balance being MnO 2 。
Preferably, the meshes of the portland cement, the calcium carbonate, the quartz sand and the clinker powder are 150-200 meshes.
In a further embodiment of the invention, the styrene-acrylic acid copolymer emulsion is modified by adopting a silane coupling agent, glycerol and nonylphenol polyethylene glycol ether, so that the water resistance, the mechanical property and the corrosion resistance of a coating formed by the coating are further improved, wherein the tensile strength can be improved to 4.9 MPa.
Preferably, when the styrene-acrylic acid copolymer emulsion is modified, the weight ratio of the styrene-acrylic acid copolymer emulsion to the silane coupling agent to the glycerol to the nonylphenol polyethylene glycol ether is 1: 0.8-5: 3-12: 5-12, and the raw materials are mixed, dispersed and reacted for 20-50 minutes under an ultrasonic condition.
Further, the polymer cement waterproof coating also comprises an auxiliary agent, wherein the auxiliary agent comprises at least one of a defoaming agent, stearic acid and sodium dodecyl benzene sulfonate. The defoamer is preferably polydimethylsiloxane.
The polymer cement waterproof coating disclosed by the invention is applied to the field of buildings.
The second invention purpose of the invention is realized by the following technical scheme:
a preparation method of the polymer cement waterproof coating comprises the following steps:
(1) stirring and mixing the waterborne polyurethane resin, the modified filler, the waterborne polyacrylate emulsion and the styrene-acrylic acid copolymer emulsion to obtain a component A;
(2) and (2) stirring and mixing cuprous sulfate, cuprous chloride and water to obtain a component B, then adding the component B into the component A, and continuously stirring to obtain the polymer cement waterproof coating.
Preferably, the stirring speed in the step (1) is 300-400 r/min, and the stirring time is 40-100 min.
Preferably, the stirring speed in the step (2) is 600-800 r/min, and the stirring time is 20-80 min.
Further, the modified filler is prepared by the following method: placing portland cement, calcium carbonate, quartz sand and clinker powder in a solvent, performing ultrasonic dispersion for 2-3 hours, adjusting the pH value to 7-9, slowly adding a silane coupling agent, polyethylene wax and polyacrylate, continuing ultrasonic dispersion for 1-2 hours, heating to 70-90 ℃, and reacting for 1-2 hours to obtain the modified filler.
Further, before the step (1), modifying the styrene-acrylic acid copolymer emulsion, specifically: and mixing the styrene-acrylic copolymer emulsion, a silane coupling agent, glycerol and nonylphenol polyethylene glycol ether, dispersing under an ultrasonic condition, and reacting for 20-50 minutes.
Compared with the prior art, the invention has the following beneficial effects:
(1) the modified filler is added into the polymer cement waterproof coating, and the compatibility of each component is improved by the modified filler, so that a coating formed by the prepared polymer cement waterproof coating has a good interwoven mesh structure, and the coating has good water resistance and mechanical properties.
(2) The styrene-acrylic acid copolymer emulsion is modified by using a silane coupling agent, glycerol and nonylphenol polyglycol ether, so that the water resistance and mechanical property of a coating formed by the polymer cement waterproof coating can be further improved, and the tensile strength can reach 4.9 MPa.
(3) The invention improves the water resistance and tensile strength of the polymer cement waterproof coating, and simultaneously ensures that the elongation at break reaches the standard of GBT 23445-2009 polymer cement waterproof coating.
Detailed Description
The following examples are only for illustrating the present invention, and the scope of the present invention is not limited to only the following examples. The objectives of the present invention can be achieved by the ordinary skilled person in the art according to the disclosure of the present invention and the ranges of the parameters.
In the examples of the present invention, the amounts of the respective raw materials are calculated in parts by weight unless otherwise specified.
Example 1
A polymer cement waterproof coating is prepared by the following steps:
(1) according to the parts by weight, stirring and mixing 22 parts of waterborne polyurethane resin, 100 parts of modified filler, 75 parts of waterborne polyacrylate emulsion and 20 parts of styrene-acrylic copolymer emulsion for 80min at the stirring speed of 300r/min to obtain a component A; wherein,
the meshes of the portland cement, calcium carbonate, quartz sand and clinker powder in the modified filler are 180-200 meshes; the melting block powder comprises the following chemical components in percentage by weightComprises the following components: 30% SiO 2 、10％Al 2 O 3 、7％BaO、8％CaO、7％ZnO、2％MgO、1％Fe 3 O 4 、0.5％Na 2 O, balance MnO 2 。
The preparation method of the modified filler comprises the following steps: putting 100 parts of portland cement, 2 parts of calcium carbonate, 6 parts of quartz sand and 9 parts of clinker powder into a solvent (the solvent is a mixture of water and glycerol, and the weight ratio of the water to the glycerol is 10: 2), wherein the weight ratio of the solvent to the portland cement is 1.5: 1, then carrying out ultrasonic dispersion for 2 hours, and then adjusting the pH value to 7; then slowly adding 12 parts of silane coupling agent KH-792, 6 parts of polyethylene wax and 18 parts of polyacrylate, continuing to perform ultrasonic dispersion for 1 hour, and then heating to 75 ℃ for reaction for 2 hours to obtain the modified filler.
(2) According to the parts by weight, 1 part of cuprous sulfate, 0.5 part of cuprous chloride and 15 parts of water are stirred and mixed for 20min at the stirring speed of 800r/min to prepare a component B, then the component B is added into the component A, the weight ratio of the component A to the component B is 100: 4, and polydimethylsiloxane and sodium dodecyl benzene sulfonate (the addition amounts of polydimethylsiloxane and sodium dodecyl benzene sulfonate are respectively 0.1 percent and 0.8 percent of the total weight of the component A and the component B) are added and stirred uniformly to prepare the polymer cement waterproof coating.
Example 2
A polymer cement waterproof coating is prepared by the following steps:
(1) according to the parts by weight, stirring and mixing 25 parts of waterborne polyurethane resin, 100 parts of modified filler, 62 parts of waterborne polyacrylate emulsion and 25 parts of styrene-acrylic copolymer emulsion for 40min at a stirring speed of 400r/min to obtain a component A; wherein,
the meshes of the portland cement, calcium carbonate, quartz sand and clinker powder in the modified filler are 180-200 meshes; the fusion cake powder comprises the following chemical components in percentage by weight: 40% SiO 2 10% of Al 2 O 3 7% of BaO, 8% of CaO, 7% of ZnO, 2% of MgO and 2% of Fe 3 O 4 0.5% of Na 2 O, balance MnO 2 Composition of
The preparation method of the modified filler comprises the following steps: putting 100 parts of portland cement, 2 parts of calcium carbonate, 5 parts of quartz sand and 8 parts of clinker powder into a solvent (the solvent is a mixture of water and glycerol, the weight ratio of the water to the glycerol is 10: 3), the weight ratio of the solvent to the portland cement is 1.5: 1, performing ultrasonic dispersion for 2 hours, and adjusting the pH value to 8; then slowly adding 18 parts of silane coupling agent KH-792, 8 parts of polyethylene wax and 10 parts of polyacrylate, continuing to perform ultrasonic dispersion for 1 hour, and then heating to 80 ℃ for reaction for 2 hours to obtain the modified filler.
(2) According to the parts by weight, 1 part of cuprous sulfate, 0.6 part of cuprous chloride and 12 parts of water are stirred and mixed for 60min at the stirring speed of 600r/min to prepare a component B, then the component B is added into the component A, the weight ratio of the component A to the component B is 100: 3, and polydimethylsiloxane and sodium dodecyl benzene sulfonate (the addition amounts of the polydimethylsiloxane and the sodium dodecyl benzene sulfonate are respectively 0.1 percent and 0.6 percent of the total weight of the component A and the component B) are added and stirred uniformly to prepare the polymer cement waterproof coating.
Example 3
A polymer cement waterproof coating is prepared by the following steps:
(1) according to the parts by weight, stirring and mixing 30 parts of waterborne polyurethane resin, 100 parts of modified filler, 68 parts of waterborne polyacrylate emulsion and 28 parts of styrene-acrylic copolymer emulsion for 100min at a stirring speed of 350r/min to obtain a component A; wherein,
the meshes of the portland cement, calcium carbonate, quartz sand and clinker powder in the modified filler are 180-200 meshes; the fusion cake powder comprises the following chemical components in percentage by weight: 35% SiO 2 、8％Al 2 O 3 、7％BaO、8％CaO、7％ZnO、1％MgO、1％Fe 3 O 4 、0.5％Na 2 O, balance MnO 2 。
The preparation method of the modified filler comprises the following steps: according to the weight parts, 100 parts of portland cement, 2 parts of calcium carbonate, 8 parts of quartz sand and 7 parts of clinker powder are placed in a solvent (the solvent is a mixture of water and glycerol, the weight ratio of the water to the glycerol is 10: 3), the weight ratio of the solvent to the portland cement is 1.5: 1, ultrasonic dispersion is carried out for 2 hours, the pH value is adjusted to 9, 15 parts of silane coupling agent KH-792, 6 parts of polyethylene wax and 15 parts of polyacrylate are slowly added, ultrasonic dispersion is carried out for 1 hour continuously, and then the temperature is increased to 85 ℃ for reaction for 2 hours, so that the modified filler is prepared.
(2) Stirring and mixing 1 part of cuprous sulfate, 0.5 part of cuprous chloride and 10 parts of water for 80min at the stirring speed of 700r/min to obtain a component B, and then adding the component B into the component A, wherein the weight ratio of the component A to the component B is 100: and 2, adding polydimethylsiloxane and sodium dodecyl benzene sulfonate (the addition amounts of the polydimethylsiloxane and the sodium dodecyl benzene sulfonate are respectively 0.1 percent and 0.5 percent of the total weight of the component A and the component B), and uniformly stirring to obtain the polymer cement waterproof coating.
Example 4
This example compares to example 3 only in that it modifies the styrene-acrylic acid copolymer emulsion prior to the preparation of component A by the following process: mixing styrene-acrylic acid copolymer emulsion, silane coupling agent KH-792, glycerol and nonylphenol polyethylene glycol ether according to the weight ratio of 1: 2: 4: 6, placing under the ultrasonic condition to disperse and react for 30 minutes.
Example 5
This example compares to example 3 only in that it modifies the styrene-acrylic acid copolymer emulsion prior to the preparation of component A by the following process: mixing styrene-acrylic acid copolymer emulsion, silane coupling agent KH-792, glycerol and nonylphenol polyethylene glycol ether according to the weight ratio of 1: 4: 7: 10, placing under the ultrasonic condition to disperse and react for 50 minutes.
Comparative example 1
In comparison with example 1, comparative example 1 directly uses the same amounts of portland cement, calcium carbonate, quartz sand, and clinker powder instead of the modified filler (i.e., the filler in comparative example 1 is not modified), and the rest of the components and procedures are the same as those in example 1.
Comparative example 2
In comparison with example 2, in comparative example 2, polyethylene wax and polyacrylate in example 2 were replaced with equal amounts of polyethylene glycol, and the remaining components and preparation process were the same as in example 2.
Comparative example 3
Compared with example 3, in comparative example 3, 10 parts of aqueous polyurethane resin, 100 parts of modified filler, 80 parts of aqueous polyacrylate emulsion and 10 parts of styrene-acrylic acid copolymer emulsion are stirred and mixed to obtain component A, and the rest components and the preparation process are the same as those in example 3.
Product effectiveness testing
1. Water resistance test of coating
The water resistance of the coating layer formed from the polymer cement waterproof coating materials prepared in examples 1 to 4 and comparative examples 1 to 3 was tested according to the requirements of GBT 23445-2009 polymer cement waterproof coating material, and the results are shown in Table 1.
TABLE 1
As can be seen from Table 1, the polymer cement waterproof coatings of the embodiments 1 to 4 of the invention have good water permeability resistance, which is obviously superior to those of the comparative examples 1 to 3. The coating formed by the paint has good water resistance after the filler is specially modified.
After the styrene-acrylic acid copolymer emulsion is further modified in the embodiment 4, the water permeability resistance of the coating formed by the coating can be obviously improved.
In addition, after the coating formed by the polymer cement waterproof coating in example 4 is placed in hot water at 60 ℃ for 48 hours, the water resistance of the coating formed by the coating is tested according to the requirements in GBT 23445-2009 polymer cement waterproof coating, the water impermeability (0.3MPa, 30min) still passes, and the impermeability is 2.0 MPa; the coating layer formed of the polymer cement waterproof paint of example 3 was treated in the same manner, and the impermeability was reduced to 1.3 MPa.
2. Mechanical testing
The mechanical properties (tensile strength) of the coating formed from the polymer cement waterproof coating obtained in examples 1 to 4 and comparative examples 1 to 3 were measured according to the requirements of GBT 23445-2009 polymer cement waterproof coating, and the results are shown in Table 2.
TABLE 2
As can be seen from Table 2, the tensile strength of the coating formed by the polymer cement waterproof paint prepared in the embodiments 1 to 4 of the invention is obviously superior to that of the comparative examples 1 to 3. Furthermore, it can be seen from the results of examples 3 and 4 that the styrene-acrylic copolymer emulsion is modified before addition to further improve the tensile strength of the coating layer formed from the coating material.
Furthermore, the elongation at break of the coatings prepared in test examples 1 to 4 is 290%, 270%, 230% and 220%, respectively, which meet the 200% standard specified in GBT 23445-2009 polymer cement waterproof coating material.
The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The above-described embodiments of the present invention are to be considered in all respects as illustrative and not restrictive. Therefore, any minor modifications, equivalent changes and modifications to the above embodiments according to the spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. A polymer cement waterproof coating is characterized by comprising a component A and a component B; the component A comprises the following components in parts by weight: 20-40 parts of waterborne polyurethane resin, 100 parts of modified filler, 60-75 parts of waterborne polyacrylate emulsion and 20-30 parts of styrene-acrylic copolymer emulsion; the component B comprises: 1 part of cuprous sulfate, 0.5-2 parts of cuprous chloride and 10-20 parts of water;
the weight ratio of the component A to the component B is 100: 2-4;
the modified filler is prepared by modifying portland cement, calcium carbonate, quartz sand and clinker powder in a solvent through a silane coupling agent, polyethylene wax and polyacrylate.
2. The polymer cement waterproof coating material as claimed in claim 1, wherein the modified filler comprises the following raw materials in parts by weight: 100 parts of Portland cement, 1-10 parts of calcium carbonate, 5-20 parts of quartz sand, 8-20 parts of clinker powder, 10-20 parts of silane coupling agent, 5-10 parts of polyethylene wax and 10-20 parts of polyacrylate.
3. The polymer cement waterproof coating material as claimed in claim 2, wherein the solvent is a mixture of water and glycerol, wherein the weight ratio of water to glycerol is 10: 1-5; the weight ratio of the solvent to the portland cement is 0.8-3: 1.
4. The polymer cement waterproof coating material as claimed in claim 3, wherein the mesh number of the portland cement, calcium carbonate, quartz sand and clinker powder is 150-200 mesh.
5. The polymer cement waterproof coating as claimed in claim 4, wherein the clinker powder comprises the following chemical components in percentage by weight: 30-40% SiO 2 、6～10％Al 2 O 3 、7～12％BaO、8～13％CaO、7～12％ZnO、1～2％MgO、1～2％Fe 3 O 4 、0.5～1.5％Na 2 O, the balance being MnO 2 。
6. The polymer cement waterproofing paint according to any of claims 1 to 5, wherein the styrene-acrylic acid copolymer emulsion is modified with a silane coupling agent, glycerin, and nonylphenol polyethylene glycol ether.
7. The polymer cement waterproof coating as claimed in claim 6, wherein the weight ratio of the styrene-acrylic acid copolymer emulsion to the silane coupling agent, the glycerol and the nonylphenol polyethylene glycol ether is 1: 0.8-5: 3-12: 5-12 during modification.
8. A process for preparing a polymer cement waterproofing paint according to any of claims 1 to 7, characterized by comprising the steps of:
(1) stirring and mixing the waterborne polyurethane resin, the modified filler, the waterborne polyacrylate emulsion and the styrene-acrylic acid copolymer emulsion to obtain a component A;
(2) and (2) stirring and mixing cuprous sulfate, cuprous chloride and water to obtain a component B, then adding the component B into the component A, and continuously stirring to obtain the polymer cement waterproof coating.
9. The method for preparing polymer cement waterproof paint according to claim 8, wherein the modified filler is prepared by the following method: placing portland cement, calcium carbonate, quartz sand and clinker powder in a solvent, performing ultrasonic dispersion for 2-3 hours, adjusting the pH value to 7-9, slowly adding a silane coupling agent, polyethylene wax and polyacrylate, continuing ultrasonic dispersion for 1-2 hours, heating to 70-90 ℃, and reacting for 1-2 hours to obtain the modified filler.
10. The method for preparing the polymer cement waterproof paint according to claim 9, wherein before the step (1), the method further comprises the modification of styrene-acrylic acid copolymer emulsion, specifically: and mixing the styrene-acrylic copolymer emulsion, a silane coupling agent, glycerol and nonylphenol polyethylene glycol ether, dispersing under an ultrasonic condition, and reacting for 20-50 minutes.
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