CN113801556A - Waterborne polyurethane elastic coating with waterproof function and preparation method thereof - Google Patents
Waterborne polyurethane elastic coating with waterproof function and preparation method thereof Download PDFInfo
- Publication number
- CN113801556A CN113801556A CN202111110912.0A CN202111110912A CN113801556A CN 113801556 A CN113801556 A CN 113801556A CN 202111110912 A CN202111110912 A CN 202111110912A CN 113801556 A CN113801556 A CN 113801556A
- Authority
- CN
- China
- Prior art keywords
- elastic coating
- agent
- polyurethane elastic
- waterborne polyurethane
- stirrer
- 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.)
- Pending
Links
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 58
- 239000004814 polyurethane Substances 0.000 title claims abstract description 58
- 238000000576 coating method Methods 0.000 title claims abstract description 44
- 239000011248 coating agent Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 58
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 28
- 239000000843 powder Substances 0.000 claims abstract description 19
- 239000002562 thickening agent Substances 0.000 claims abstract description 19
- 239000000839 emulsion Substances 0.000 claims abstract description 18
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims abstract description 17
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims abstract description 17
- 239000007798 antifreeze agent Substances 0.000 claims abstract description 17
- 239000002270 dispersing agent Substances 0.000 claims abstract description 17
- 239000000945 filler Substances 0.000 claims abstract description 17
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims abstract description 17
- 239000003755 preservative agent Substances 0.000 claims abstract description 17
- 230000002335 preservative effect Effects 0.000 claims abstract description 17
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 17
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims abstract description 17
- 238000009736 wetting Methods 0.000 claims abstract description 17
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims abstract description 15
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical class [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 15
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 15
- 229940124543 ultraviolet light absorber Drugs 0.000 claims abstract description 8
- 241000276489 Merlangius merlangus Species 0.000 claims abstract description 7
- 239000013530 defoamer Substances 0.000 claims abstract description 4
- 239000002518 antifoaming agent Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- PEDCQBHIVMGVHV-UHFFFAOYSA-N glycerol group Chemical group OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000378 calcium silicate Substances 0.000 claims description 4
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 4
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000002070 nanowire Substances 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
- 229940058020 2-amino-2-methyl-1-propanol Drugs 0.000 claims description 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 229920002125 Sokalan® Polymers 0.000 claims description 2
- 125000001931 aliphatic group Chemical group 0.000 claims description 2
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical group CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 claims description 2
- 150000003863 ammonium salts Chemical class 0.000 claims description 2
- 229920003086 cellulose ether Polymers 0.000 claims description 2
- BEGLCMHJXHIJLR-UHFFFAOYSA-N methylisothiazolinone Chemical compound CN1SC=CC1=O BEGLCMHJXHIJLR-UHFFFAOYSA-N 0.000 claims description 2
- 239000002480 mineral oil Substances 0.000 claims description 2
- 235000010446 mineral oil Nutrition 0.000 claims description 2
- 239000004584 polyacrylic acid Substances 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical class [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 2
- 239000002250 absorbent Substances 0.000 claims 2
- 230000002745 absorbent Effects 0.000 claims 2
- 230000006750 UV protection Effects 0.000 abstract description 3
- 238000012216 screening Methods 0.000 abstract description 2
- 239000003973 paint Substances 0.000 description 6
- 230000002528 anti-freeze Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229940100555 2-methyl-4-isothiazolin-3-one Drugs 0.000 description 1
- 229940100484 5-chloro-2-methyl-4-isothiazolin-3-one Drugs 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- YYRMJZQKEFZXMX-UHFFFAOYSA-N calcium;phosphoric acid Chemical compound [Ca+2].OP(O)(O)=O.OP(O)(O)=O YYRMJZQKEFZXMX-UHFFFAOYSA-N 0.000 description 1
- DHNRXBZYEKSXIM-UHFFFAOYSA-N chloromethylisothiazolinone Chemical compound CN1SC(Cl)=CC1=O DHNRXBZYEKSXIM-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002426 superphosphate Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- 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
-
- 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
Abstract
The invention discloses a water-based polyurethane elastic coating with a waterproof function, which comprises the following components in percentage by weight: 6-11% of water, 0.1-0.2% of pH regulator, 0.05-0.4% of hydroxyethyl cellulose, 0.1-0.2% of preservative, 0.7-1.2% of wetting dispersant, 0.3-0.7% of defoamer, 16-24% of titanium dioxide, 5-12% of coarse whiting powder, 3-6% of nano filler, 4-8% of modified barium sulfate, 14-20% of calcium carbonate, 40-50% of polyurethane emulsion, 0.4-1% of ethylene glycol butyl ether, 0.3-1.2% of ultraviolet light absorber, 0.2-0.7% of nano silicon waterproof agent, 0.1-1.3% of flatting agent, 0.8-1.5% of antifreeze agent and 0.05-0.4% of thickening agent, and a preparation method of the waterborne polyurethane elastic coating with waterproof function. According to the invention, through screening and dosage ratio research of various polyurethane emulsions and auxiliaries, the waterborne polyurethane elastic coating with a super waterproof function is developed, and the product not only has the characteristics of high strength, high elongation and waterborne environmental-friendly waterborne polyurethane elastic coating, but also has the functions of water resistance, ultraviolet resistance and low temperature resistance.
Description
Technical Field
The invention relates to the technical field of paint correlation, in particular to a water-based polyurethane elastic paint with a waterproof function and a preparation method thereof.
Background
With the continuous promotion of urbanization process, urban population is continuously increased, urban housing density is continuously increased, and the requirement of high-rise building on building materials is higher and higher. At present, in order to increase the safety and the aesthetic property of high-rise houses, paint is required to be painted on the outer wall of a building, and ultraviolet rays are irradiated for a long time in the process of using the outer wall paint, which is the most important difference point between the outer wall paint and the inner wall paint.
Meanwhile, the environment of the outer wall surface is very complex, so that the outer wall surface is not only subjected to ultraviolet irradiation, but also corroded by rainwater. Although the traditional elastic coating for the outer wall has a certain waterproof function, the corrosion resistance of the traditional elastic coating is poor, the adhesion degree of the traditional elastic coating on the wall is general, and if the erosion time of rainwater is too long, the heat-insulating layer, the base layer and the like on the whole outer wall surface are affected. In view of the above, we propose a water-based polyurethane elastic coating with waterproof function and a preparation method thereof.
Disclosure of Invention
The invention aims to provide a water-based polyurethane elastic coating with a waterproof function and a preparation method thereof, and aims to solve the problems in the background art.
In order to realize the purpose, the invention provides the following technical scheme that the waterborne polyurethane elastic coating with the waterproof function comprises the following components in percentage by weight: 6-11% of water, 0.1-0.2% of pH regulator, 0.05-0.4% of hydroxyethyl cellulose, 0.1-0.2% of preservative, 0.7-1.2% of wetting dispersant, 0.3-0.7% of defoamer, 16-24% of titanium dioxide, 5-12% of coarse whiting powder, 3-6% of nano filler, 4-8% of modified barium sulfate, 14-20% of calcium carbonate, 40-50% of polyurethane emulsion, 0.4-1% of ethylene glycol monobutyl ether, 0.3-1.2% of ultraviolet absorber, 0.2-0.7% of nano silicon waterproof agent, 0.1-1.3% of flatting agent, 0.8-1.5% of antifreeze agent and 0.05-0.4% of thickener.
Preferably, the pH regulator is 2-amino-2-methyl-1-propanol and the hydroxyethyl cellulose is a nonionic water-soluble cellulose ether.
Preferably, the preservative is a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one in any proportion; the wetting dispersant is polyacrylic acid ammonium salt or sodium polyacrylate salt; the defoaming agent is mineral oil or organic silicon defoaming agent.
Preferably, the titanium dioxide is rutile titanium dioxide, the calcium carbonate is ground calcium carbonate, and the emulsion is aliphatic polyether polyurethane emulsion.
Preferably, the antifreeze is glycerol ethoxylate antifreeze; the thickening agent is an associated polyurethane thickening agent.
Preferably, the nano filler comprises the following types and the mass content of the total components: 4-6% of nano aluminum oxide, 3-5% of nano zinc oxide and 5-8% of calcium silicate nanowires, wherein the sizes of the nano aluminum oxide, the nano zinc oxide and the calcium silicate nanowires are all lower than 100 nanometers, and the heavy calcium carbonate powder is 1250-mesh natural calcium carbonate powder.
Preferably, the ultraviolet absorber adopts an ultraviolet absorber UV-531, and the leveling agent is polyurethane.
A preparation method of a water-based polyurethane elastic coating with a waterproof function comprises the following steps:
step S1, adding water into a stirrer, sequentially adding a PH regulator and hydroxyethyl cellulose, controlling the rotating speed of the stirrer at 450r/min, and continuously dispersing for 7-10 min;
s2, sequentially adding a preservative, a wetting dispersant, a defoaming agent and ethylene glycol monobutyl ether, adjusting the rotating speed of a stirrer to 350-450r/min, and continuously dispersing for 4-8 min;
step S3, adding titanium dioxide, modified barium sulfate, calcium carbonate, coarse whiting powder and nano filler, adjusting the rotating speed of a stirrer to 1000-1500r/min, and continuously dispersing for 15-20 min;
s4, keeping the rotation speed of the stirrer at 500-;
and S5, reducing the rotating speed of the stirrer to below 450-500r/min, adding an antifreeze agent, a thickening agent, an ultraviolet light absorber, a nano silicon waterproof agent and a leveling agent, and continuously dispersing in the stirrer for 10-20min until the system is a uniform and particle-free white mixture.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, through screening and dosage ratio research of various polyurethane emulsions and auxiliaries, the waterborne polyurethane elastic coating with a super waterproof function is developed, and the product not only has the characteristics of high strength, high elongation and waterborne environmental-friendly waterborne polyurethane elastic coating, but also has the functions of water resistance, ultraviolet resistance and low temperature resistance.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: the technical solution of the present patent will be described in further detail with reference to the following embodiments.
The waterborne polyurethane elastic coating with the waterproof function comprises the following components in percentage by weight: 6-11% of water, 0.1-0.2% of pH regulator, 0.05-0.4% of hydroxyethyl cellulose, 0.1-0.2% of preservative, 0.7-1.2% of wetting dispersant, 0.3-0.7% of defoamer, 16-24% of titanium dioxide, 5-12% of coarse whiting powder, 3-6% of nano filler, 4-8% of modified barium sulfate, 14-20% of calcium carbonate, 40-50% of polyurethane emulsion, 0.4-1% of ethylene glycol monobutyl ether, 0.3-1.2% of ultraviolet absorber, 0.2-0.7% of nano silicon waterproof agent, 0.1-1.3% of flatting agent, 0.8-1.5% of antifreeze agent and 0.05-0.4% of thickener.
A preparation method of a water-based polyurethane elastic coating with a waterproof function comprises the following steps:
step S1, adding water into a stirrer, sequentially adding a PH regulator and hydroxyethyl cellulose, controlling the rotating speed of the stirrer at 450r/min, and continuously dispersing for 7-10 min;
s2, sequentially adding a preservative, a wetting dispersant, a defoaming agent and ethylene glycol monobutyl ether, adjusting the rotating speed of a stirrer to 350-450r/min, and continuously dispersing for 4-8 min;
step S3, adding titanium dioxide, modified barium sulfate, calcium carbonate, coarse whiting powder and nano filler, adjusting the rotating speed of a stirrer to 1000-1500r/min, and continuously dispersing for 15-20 min;
s4, keeping the rotation speed of the stirrer at 500-;
and S5, reducing the rotating speed of the stirrer to below 450-500r/min, adding an antifreeze agent, a thickening agent, an ultraviolet light absorber, a nano silicon waterproof agent and a leveling agent, and continuously dispersing in the stirrer for 10-20min until the system is a uniform and particle-free white mixture.
Detailed description of the preferred embodiment 1
The waterborne polyurethane elastic coating with the waterproof function comprises the following components in percentage by weight: 6% of water, 0.1% of pH regulator, 0.1% of hydroxyethyl cellulose, 0.1% of preservative, 1% of wetting dispersant, 0.5% of defoaming agent, 17% of titanium dioxide, 6% of triple superphosphate powder, 3% of nano filler, 4% of modified barium sulfate, 14% of calcium carbonate, 44% of polyurethane emulsion, 0.7% of ethylene glycol monobutyl ether, 0.4% of ultraviolet light absorber, 0.7% of nano silicon waterproof agent, 1% of flatting agent, 1.3% of antifreeze agent and 0.1% of thickening agent.
A preparation method of a water-based polyurethane elastic coating with a waterproof function comprises the following steps:
step S1, adding water into a stirrer, sequentially adding a pH regulator and hydroxyethyl cellulose, controlling the rotating speed of the stirrer at 450r/min, and continuously dispersing for 8 min;
step S2, sequentially adding a preservative, a wetting dispersant, a defoaming agent and ethylene glycol monobutyl ether, adjusting the rotating speed of a stirrer to 400r/min, and continuously dispersing for 5 min;
step S3, adding titanium dioxide, modified barium sulfate, calcium carbonate, heavy calcium carbonate powder and nano filler, adjusting the rotating speed of a stirrer to 1200r/min, and continuously dispersing for 16 min;
step S4, keeping the rotating speed of a stirrer at 650r/min, slowly adding polyurethane emulsion, and continuously dispersing for 3 min;
and S5, reducing the rotating speed of the stirrer to be below 500r/min, adding an antifreeze agent, a thickening agent, an ultraviolet absorber, a nano silicon waterproof agent and a leveling agent, and continuously dispersing in the stirrer for 13min until the system is a uniform and particle-free white mixture.
Specific example 2
The waterborne polyurethane elastic coating with the waterproof function comprises the following components in percentage by weight: 10% of water, 0.2% of pH regulator, 0.2% of hydroxyethyl cellulose, 0.1% of preservative, 0.7% of wetting dispersant, 0.3% of defoaming agent, 16% of titanium dioxide, 5% of heavy calcium carbonate powder, 5% of nano filler, 4% of modified barium sulfate, 14% of calcium carbonate, 40% of polyurethane emulsion, 0.5% of ethylene glycol monobutyl ether, 1% of ultraviolet light absorber, 0.4% of nano silicon waterproof agent, 1.3% of flatting agent, 1.25% of antifreeze agent and 0.05% of thickening agent.
A preparation method of a water-based polyurethane elastic coating with a waterproof function comprises the following steps:
step S1, adding water into a stirrer, sequentially adding a pH regulator and hydroxyethyl cellulose, controlling the rotating speed of the stirrer at 300r/min, and continuously dispersing for 10 min;
step S2, sequentially adding a preservative, a wetting dispersant, a defoaming agent and ethylene glycol monobutyl ether, adjusting the rotating speed of a stirrer to 400r/min, and continuously dispersing for 8 min;
step S3, adding titanium dioxide, modified barium sulfate, calcium carbonate, heavy calcium carbonate powder and nano filler, adjusting the rotating speed of a stirrer to 1000r/min, and continuously dispersing for 18 min;
step S4, keeping the rotating speed of a stirrer at 650r/min, slowly adding polyurethane emulsion, and continuously dispersing for 4 min;
and S5, reducing the rotating speed of the stirrer to below 480r/min, adding an antifreeze agent, a thickening agent, an ultraviolet absorber, a nano silicon waterproof agent and a leveling agent, and continuously dispersing in the stirrer for 20min until the system is a uniform and particle-free white mixture.
Specific example 3
The waterborne polyurethane elastic coating with the waterproof function comprises the following components in percentage by weight: 6.4% of water, 0.1% of pH regulator, 0.4% of hydroxyethyl cellulose, 0.1% of preservative, 1% of wetting dispersant, 0.5% of defoaming agent, 16% of titanium dioxide, 6% of heavy calcium carbonate powder, 3% of nano filler, 8% of modified barium sulfate, 15% of calcium carbonate, 41% of polyurethane emulsion, 0.5% of ethylene glycol monobutyl ether, 0.7% of ultraviolet light absorber, 0.2% of nano silicon waterproof agent, 0.1% of flatting agent, 0.9% of antifreeze agent and 0.1% of thickening agent.
A preparation method of a water-based polyurethane elastic coating with a waterproof function comprises the following steps:
step S1, adding water into a stirrer, sequentially adding a pH regulator and hydroxyethyl cellulose, controlling the rotating speed of the stirrer at 400r/min, and continuously dispersing for 10 min;
step S2, sequentially adding a preservative, a wetting dispersant, a defoaming agent and ethylene glycol monobutyl ether, adjusting the rotating speed of a stirrer to 400r/min, and continuously dispersing for 8 min;
step S3, adding titanium dioxide, modified barium sulfate, calcium carbonate, heavy calcium carbonate powder and nano filler, adjusting the rotating speed of a stirrer to 1300r/min, and continuously dispersing for 20 min;
step S4, keeping the rotating speed of a stirrer at 650r/min, slowly adding polyurethane emulsion, and continuously dispersing for 5 min;
and S5, reducing the rotating speed of the stirrer to below 450r/min, adding an antifreeze agent, a thickening agent, an ultraviolet absorber, a nano silicon waterproof agent and a leveling agent, and continuously dispersing in the stirrer for 15min until the system is a uniform and particle-free white mixture.
Specific example 4
The waterborne polyurethane elastic coating with the waterproof function comprises the following components in percentage by weight: 6% of water, 0.2% of pH regulator, 0.05% of hydroxyethyl cellulose, 0.15% of preservative, 0.7% of wetting dispersant, 0.5% of defoaming agent, 20% of titanium dioxide, 5% of heavy calcium carbonate powder, 5% of nano filler, 5% of modified barium sulfate, 15% of calcium carbonate, 40% of polyurethane emulsion, 0.4% of ethylene glycol monobutyl ether, 0.3% of ultraviolet light absorber, 0.7% of nano silicon waterproof agent, 0.1% of flatting agent, 0.85% of antifreeze agent and 0.05% of thickening agent.
A preparation method of a water-based polyurethane elastic coating with a waterproof function comprises the following steps:
step S1, adding water into a stirrer, sequentially adding a PH regulator and hydroxyethyl cellulose, controlling the rotating speed of the stirrer at 340r/min, and continuously dispersing for 7-10 min;
step S2, sequentially adding a preservative, a wetting dispersant, a defoaming agent and ethylene glycol monobutyl ether, adjusting the rotating speed of a stirrer to 400r/min, and continuously dispersing for 6 min;
step S3, adding titanium dioxide, modified barium sulfate, calcium carbonate, heavy calcium carbonate powder and nano filler, adjusting the rotating speed of a stirrer to 1250r/min, and continuously dispersing for 17 min;
step S4, keeping the rotating speed of a stirrer at 650r/min, slowly adding polyurethane emulsion, and continuously dispersing for 5 min;
and S5, reducing the rotating speed of the stirrer to 475r/min, adding an antifreeze agent, a thickening agent, an ultraviolet absorber, a nano silicon waterproof agent and a leveling agent, and continuously dispersing in the stirrer for 13min until the system is a uniform and particle-free white mixture.
The elastic coating prepared according to the 4 examples above is tested according to the JG/T172-2014 elastic building coating standard, and the stain resistance, the contrast ratio, the normal temperature elongation, the strength and the elongation at-10 ℃ all meet the standard requirements, and the specific example 4 is the best;
the elastic coatings prepared in 4 examples meet the requirements of solid content, strength, elongation at break and waterproof performance, and the specific example 2 is the best.
Therefore, the waterborne polyurethane elastic coating with the waterproof function for the outer wall has the characteristics of high strength, high elongation, water-based environment-friendly waterborne polyurethane elastic coating, and has the functions of water resistance, ultraviolet resistance and low temperature resistance.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The water-based polyurethane elastic coating with the waterproof function is characterized by comprising the following components in parts by weight: the elastic coating comprises the following components in percentage by weight: 6-11% of water, 0.1-0.2% of pH regulator, 0.05-0.4% of hydroxyethyl cellulose, 0.1-0.2% of preservative, 0.7-1.2% of wetting dispersant, 0.3-0.7% of defoamer, 16-24% of titanium dioxide, 5-12% of coarse whiting powder, 3-6% of nano filler, 4-8% of modified barium sulfate, 14-20% of calcium carbonate, 40-50% of polyurethane emulsion, 0.4-1% of ethylene glycol monobutyl ether, 0.3-1.2% of ultraviolet absorber, 0.2-0.7% of nano silicon waterproof agent, 0.1-1.3% of flatting agent, 0.8-1.5% of antifreeze agent and 0.05-0.4% of thickener.
2. The waterborne polyurethane elastic coating with the waterproof function as claimed in claim 1, wherein the waterborne polyurethane elastic coating is characterized in that: the PH regulator is 2-amino-2-methyl-1-propanol, and the hydroxyethyl cellulose is nonionic water-soluble cellulose ether.
3. The waterborne polyurethane elastic coating with the waterproof function as claimed in claim 2, wherein: the preservative is a mixture of 5-chloro-2-methyl-4-isothiazoline-3-ketone and 2-methyl-4-isothiazoline-3-ketone in any proportion; the wetting dispersant is polyacrylic acid ammonium salt or sodium polyacrylate salt; the defoaming agent is mineral oil or organic silicon defoaming agent.
4. The waterborne polyurethane elastic coating with the waterproof function as claimed in claim 3, wherein the waterborne polyurethane elastic coating is characterized in that: the titanium dioxide is rutile titanium dioxide, the calcium carbonate is ground calcium carbonate, and the emulsion is aliphatic polyether polyurethane emulsion.
5. The waterborne polyurethane elastic coating with the waterproof function as claimed in claim 4, wherein the waterborne polyurethane elastic coating is characterized in that: the antifreeze agent is a glycerol ethoxylate antifreeze agent; the thickening agent is an associated polyurethane thickening agent.
6. The waterborne polyurethane elastic coating with the waterproof function of claim 5, wherein the waterborne polyurethane elastic coating is characterized in that: the nano filler comprises the following types and accounts for the mass content of the total components: 4-6% of nano aluminum oxide, 3-5% of nano zinc oxide and 5-8% of calcium silicate nanowires, wherein the sizes of the nano aluminum oxide, the nano zinc oxide and the calcium silicate nanowires are all lower than 100 nanometers, and the heavy calcium carbonate powder is 1250-mesh natural calcium carbonate powder.
7. The waterborne polyurethane elastic coating with the waterproof function as claimed in claim 6, wherein the waterborne polyurethane elastic coating is characterized in that: the ultraviolet absorbent is ultraviolet absorbent UV-531, and the leveling agent is polyurethane.
8. A method for preparing the waterborne polyurethane elastic coating with the waterproof function according to any one of claims 1 to 7, wherein the method comprises the following steps: the preparation method comprises the following steps:
step S1, adding water into a stirrer, sequentially adding a PH regulator and hydroxyethyl cellulose, controlling the rotating speed of the stirrer at 450r/min, and continuously dispersing for 7-10 min;
s2, sequentially adding a preservative, a wetting dispersant, a defoaming agent and ethylene glycol monobutyl ether, adjusting the rotating speed of a stirrer to 350-450r/min, and continuously dispersing for 4-8 min;
step S3, adding titanium dioxide, modified barium sulfate, calcium carbonate, coarse whiting powder and nano filler, adjusting the rotating speed of a stirrer to 1000-1500r/min, and continuously dispersing for 15-20 min;
s4, keeping the rotation speed of the stirrer at 500-;
and S5, reducing the rotating speed of the stirrer to below 450-500r/min, adding an antifreeze agent, a thickening agent, an ultraviolet light absorber, a nano silicon waterproof agent and a leveling agent, and continuously dispersing in the stirrer for 10-20min until the system is a uniform and particle-free white mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111110912.0A CN113801556A (en) | 2021-09-23 | 2021-09-23 | Waterborne polyurethane elastic coating with waterproof function and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111110912.0A CN113801556A (en) | 2021-09-23 | 2021-09-23 | Waterborne polyurethane elastic coating with waterproof function and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113801556A true CN113801556A (en) | 2021-12-17 |
Family
ID=78940091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111110912.0A Pending CN113801556A (en) | 2021-09-23 | 2021-09-23 | Waterborne polyurethane elastic coating with waterproof function and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113801556A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0979850A1 (en) * | 1998-08-11 | 2000-02-16 | Hercules Incorporated | Use of aqueous protective coating compositions for industrial coatings and aqueous coating compositions |
| CN111909610A (en) * | 2020-08-14 | 2020-11-10 | 上海三棵树防水技术有限公司 | Polyurethane waterproof coating and preparation method thereof |
| CN112940598A (en) * | 2021-03-09 | 2021-06-11 | 上海三棵树防水技术有限公司 | Super-hydrophobic water-based polyurethane waterproof coating and preparation method thereof |
-
2021
- 2021-09-23 CN CN202111110912.0A patent/CN113801556A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0979850A1 (en) * | 1998-08-11 | 2000-02-16 | Hercules Incorporated | Use of aqueous protective coating compositions for industrial coatings and aqueous coating compositions |
| CN111909610A (en) * | 2020-08-14 | 2020-11-10 | 上海三棵树防水技术有限公司 | Polyurethane waterproof coating and preparation method thereof |
| CN112940598A (en) * | 2021-03-09 | 2021-06-11 | 上海三棵树防水技术有限公司 | Super-hydrophobic water-based polyurethane waterproof coating and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104327657B (en) | A kind of heat insulation Waterproof corrosion coating of external wall energy-saving | |
| CN102604498B (en) | High-pollution-resistant high weatherproof water-based external wall emulsion paint and preparation method thereof | |
| CN102702907B (en) | Nanometer silicon wall paint for external wall | |
| CN103360881A (en) | Nano-silica sol-modified outer wall paint and preparation method thereof | |
| CN102391754A (en) | Double-coated hollow glass microbead heat-insulated coating and preparation method thereof | |
| CN112745726A (en) | High-performance organic-inorganic composite heat-reflection waterproof coating, and preparation method and application thereof | |
| CN112266663A (en) | Quick-drying primer for renovating exterior wall tiles and preparation method thereof | |
| CN112300703A (en) | Water-based bio-based climbing frame coating and preparation method thereof | |
| CN105778676A (en) | Heat-insulating, waterproof and environment-friendly paint and preparation method thereof | |
| CN113249020A (en) | High-stain-resistance sewage-water-resistant polyurethane waterproof coating and preparation method thereof | |
| CN103666130A (en) | Preparation method of full water-borne fluorocarbon acid-resistant texture coating | |
| CN114806289A (en) | Primer-free water-based exterior wall latex paint and preparation method thereof | |
| CN113265181A (en) | Reflective heat-insulation primer-topcoat exterior wall coating and preparation method thereof | |
| CN104910759A (en) | Water-based epoxy paint and preparation method thereof | |
| CN110684453A (en) | Water-based high-brightness easy-cleaning porcelainized coating for tunnel and preparation method thereof | |
| CN113801556A (en) | Waterborne polyurethane elastic coating with waterproof function and preparation method thereof | |
| CN112266678A (en) | Waterproof coating for external wall and preparation method thereof | |
| CN107892849A (en) | A kind of reflective heat-insulation paint and preparation method thereof | |
| CN115505317A (en) | Water-based epoxy asphalt waterproof and anticorrosive coating for inner wall of water tank and preparation method thereof | |
| CN105199522A (en) | Weather-resistant heat-isolation outer wall emulsion paint | |
| CN113429841B (en) | Water-based coating composition for forming wall heat-insulating coating and wall reflection heat-insulating coating system containing heat-insulating coating | |
| CN115304949A (en) | Fireproof fluorescent inorganic coating for exterior wall and preparation method thereof | |
| CN112341889A (en) | Texture coating and preparation method and application thereof | |
| CN111944374A (en) | Inorganic water-based fluorocarbon coating composition for exterior wall and preparation method thereof | |
| WO2021114593A1 (en) | Water-based environment-friendly automatic construction high-weather-resistance protective material and preparation method therefor |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211217 |