CN114891410A - Pervious concrete high-weather-resistance protective agent and preparation method thereof - Google Patents
Pervious concrete high-weather-resistance protective agent and preparation method thereof Download PDFInfo
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- CN114891410A CN114891410A CN202210567910.2A CN202210567910A CN114891410A CN 114891410 A CN114891410 A CN 114891410A CN 202210567910 A CN202210567910 A CN 202210567910A CN 114891410 A CN114891410 A CN 114891410A
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- 239000003223 protective agent Substances 0.000 title claims abstract description 39
- 239000011380 pervious concrete Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 42
- 239000002270 dispersing agent Substances 0.000 claims abstract description 19
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 17
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000003085 diluting agent Substances 0.000 claims abstract description 12
- 239000012948 isocyanate Substances 0.000 claims abstract description 9
- 239000000049 pigment Substances 0.000 claims abstract description 9
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims abstract description 6
- 239000013638 trimer Substances 0.000 claims abstract description 5
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 4
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 4
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 4
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims abstract description 3
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 18
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 15
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 13
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 12
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 12
- -1 polysiloxane Polymers 0.000 claims description 12
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 12
- 239000004952 Polyamide Substances 0.000 claims description 11
- 229920002647 polyamide Polymers 0.000 claims description 11
- 239000002002 slurry Substances 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- 239000004567 concrete Substances 0.000 claims description 9
- 239000008096 xylene Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 6
- RSOILICUEWXSLA-UHFFFAOYSA-N bis(1,2,2,6,6-pentamethylpiperidin-4-yl) decanedioate Chemical group C1C(C)(C)N(C)C(C)(C)CC1OC(=O)CCCCCCCCC(=O)OC1CC(C)(C)N(C)C(C)(C)C1 RSOILICUEWXSLA-UHFFFAOYSA-N 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract description 5
- 229920006026 co-polymeric resin Polymers 0.000 abstract description 5
- 229910052731 fluorine Inorganic materials 0.000 abstract description 5
- 239000011737 fluorine Substances 0.000 abstract description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 2
- 239000001257 hydrogen Substances 0.000 abstract description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 abstract description 2
- 239000000178 monomer Substances 0.000 abstract description 2
- 229920001558 organosilicon polymer Polymers 0.000 abstract description 2
- 229920000058 polyacrylate Polymers 0.000 abstract description 2
- 238000004383 yellowing Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 239000001993 wax Substances 0.000 description 14
- 239000003973 paint Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 230000006750 UV protection Effects 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000013008 thixotropic agent Substances 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 230000037303 wrinkles Effects 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
- C09D143/00—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 containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
-
- 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
- C09D7/20—Diluents or solvents
-
- 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
- C09D7/45—Anti-settling agents
-
- 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
- C09D7/47—Levelling agents
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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
- C09D7/61—Additives non-macromolecular inorganic
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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
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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
- C09D7/65—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
- C08K3/30—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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a pervious concrete high-weather-resistance protective agent and a preparation method thereof, wherein the pervious concrete high-weather-resistance protective agent is formed by mixing A, B components. The component A consists of fluorine-silicon modified acrylic resin, a diluent, a dispersing agent, a filler, a pigment, an auxiliary agent and an anti-ultraviolet agent. The component B is an isocyanate curing agent. According to the invention, the main resin is fluorine-silicon modified acrylic resin, fluorine-containing silicon groups are introduced into the side chain of the acrylic resin and are simultaneously introduced into the acrylic polymer, and the organosilicon polymer with double bonds and the fluorine monomer with double bonds are used as modified copolymer resin, so that the weather resistance of the modified copolymer resin is greatly improved, the weather resistance of the modified copolymer resin is improved, and the service life of the modified copolymer resin is prolonged. The component B is trimer aliphatic polyisocyanate curing agent, which has the greatest advantages that no active hydrogen atom exists on the molecular structure, no intramolecular or intermolecular hydrogen bond is formed, the viscosity of the product is lower, and the product has good corrosion resistance and yellowing resistance, and the comprehensive performance is enhanced.
Description
Technical Field
The invention relates to the field of building materials, in particular to a pervious concrete high-weather-resistance protective agent and a preparation method thereof.
Background
The urbanization process of china has advanced dramatically since the 21 st century. More and more urban ground surfaces adopt ecological and environment-friendly permeable pavements to solve the urban heat island effect, the permeable pavements are paved by permeable concrete,
the excellent characteristics of ventilation, water permeability, cooling, noise reduction and comfortable walking make the permeable concrete an indispensable auxiliary material in the garden landscape road. However, most of the existing water permeable paint protective agents are solvent type acrylic resins, and although the water permeable paint protective agents have good film-forming properties, the structural characteristics of the acrylic resins cause the weather resistance, water resistance and ultraviolet resistance to be unsatisfactory, and the light and color retention effects are poor, so that the problems of texture gliding, color loss and the like can occur after the water permeable paint protective agents are sprayed on the surface of concrete for a certain time, and the protective effect on the surface of the water permeable concrete can also be reduced, so that a water permeable concrete protective agent with stronger weather resistance is urgently needed to solve the problems.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-weather-resistant protective agent for pervious concrete, which not only has good film-forming property, but also has excellent weather resistance, water resistance and ultraviolet light resistance, has good light and color retention effects, and can prolong the protection time of the surface of the pervious concrete.
In order to achieve the purpose, the invention adopts the technical scheme that: a pervious concrete high-weatherability protective agent is prepared by mixing A, B components. The component A comprises fluorine-silicon modified acrylic resin, a diluent, a dispersing agent, a filler, a pigment, an auxiliary agent and an anti-ultraviolet agent. The component B is an isocyanate curing agent. The A, B component has the weight ratio of 5-7: 1.
furthermore, the component A comprises 55-75 wt% of fluorine-silicon modified acrylic resin, 8-20 wt% of diluent, 1-2 wt% of dispersant, 0.5-5 wt% of filler, 0.7-1.3 wt% of assistant, 0.5-5 wt% of anti-ultraviolet agent and 3-13 wt% of pigment.
Furthermore, the diluent is xylene, butyl acetate and propylene glycol monomethyl ether acetate, and the weight percentage of each component in the permeable concrete organic protective agent is 9.5-10.5% of xylene, 3.5-4.5% of butyl acetate and 3.5-4.5% of propylene glycol monomethyl ether acetate.
Furthermore, the auxiliary agent is an acrylate leveling agent and polyamide wax anti-settling wax slurry, and the weight percentage of each component of the auxiliary agent in the permeable concrete organic protective agent is 0.4-0.6% of the acrylate leveling agent and 0.4-0.6% of the polyamide wax anti-settling wax slurry.
Preferably, the filler is barium sulfate.
Preferably, the dispersing agent is a mixture of a high-molecular polycarboxylic acid solution and a polysiloxane solution.
Preferably, the anti-uv agent is bis (1,2,2,6, 6-pentamethyl-4-piperidinyl) sebacate.
Preferably, the component B is a trimer aliphatic polyisocyanate curing agent.
A preparation method of a pervious concrete high-weather-resistance protective agent comprises the following steps:
1) under the condition of stirring, sequentially adding a diluent xylene, butyl acetate and propylene glycol monomethyl ether acetate into a mixing kettle, stirring and mixing, and then sequentially adding a dispersing agent, an acrylate leveling agent and an anti-ultraviolet agent for mixing;
2) stirring and dispersing for 10-15 minutes at 800r/min for 600-;
3) according to the weight ratio of the component A to the component B, the component A and the component B are uniformly mixed under the stirring condition to obtain the pervious concrete high-weather-resistant protective agent.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the fluorine-containing silicon group is introduced into the acrylic polymer through introducing the fluorine-containing silicon group into the side chain of the acrylic resin, and the organosilicon polymer with double bonds and the fluorine monomer with double bonds are used as modified copolymer resin, so that the water resistance, cold resistance, heat resistance and ultraviolet resistance of the acrylic resin are greatly improved, and the weather resistance and the service life of the acrylic resin are improved.
In the invention, the component B curing agent is trimer aliphatic polyisocyanate curing agent, and the aliphatic isocyanate has the greatest advantage over aromatic isocyanate that no active hydrogen atom exists on the structure of the synthesized aliphatic isocyanate trimer, and no intramolecular or intermolecular hydrogen bond is formed, so that the product has low viscosity, good corrosion resistance and yellowing resistance, and enhanced comprehensive performance.
In the invention, the dispersing agent is a mixture of a macromolecular polycarboxylic acid solution and a polysiloxane solution, is a controlled flocculation dispersing agent, has wide universality, improves wetting, has stronger floating color and floating color prevention capability on a multicolor system, and has excellent comprehensive performance.
In the invention, the ultraviolet resistant agent is bis (1,2,2,6, 6-pentamethyl-4-piperidyl) sebacate, and the ultraviolet resistant agent is used for the coating and can effectively prolong the service life of the coating and prevent cracks and loss of luster.
In the invention, the diluent is a mixture of xylene, butyl acetate and propylene glycol monomethyl ether acetate, and the mixture of the three components can meet various requirements of the paint, such as good solubility to non-volatile paint components, increased intersolubility among the paint components, moderate volatilization rate of the mixed diluent, stronger capability of reducing the viscosity of the paint, good leveling property of a paint film and avoidance of wrinkles in the drying process of the paint film.
The assistant is an acrylate leveling agent and a polyamide wax anti-settling wax slurry, wherein the acrylate leveling agent can improve the wettability of a base material, promote the leveling of a paint film, prevent shrinkage cavities and has a defoaming effect, and the polyamide wax anti-settling wax slurry is a slurry thixotropic agent consisting of modified polyamide wax, forms a strong network structure in the paint, has excellent thixotropic performance and good dispersibility, and provides excellent sagging prevention, settling prevention and thickening effects. And the barium sulfate filler plays a role in enhancing the hardness and plumpness of the paint film.
Detailed Description
The brand and model of the fluorosilicone modified acrylic resin in examples 1-3 was Dismann NEOCRYL B-851.
Example 1
A high-weather-resistant protective agent for pervious concrete is prepared by the following steps of: 1, wherein the component A comprises 67 percent of fluorine-silicon modified acrylic resin, 10.5 percent of dimethylbenzene, 4 percent of butyl acetate, 3.5 percent of propylene glycol methyl ether acetate, 1 percent of dispersant, 10 percent of pigment, 0.5 percent of acrylate leveling agent, 0.6 percent of polyamide wax anti-settling slurry, 1.9 percent of barium sulfate and 1 percent of ultraviolet resistant agent, wherein the dispersant is a mixture of a high molecular polycarboxylic acid solution and a polysiloxane solution, and the ultraviolet resistant agent is bis (1,2,2,6, 6-pentamethyl-4-piperidyl) sebacate. The component B is an aliphatic isocyanate curing agent.
The preparation method of the pervious concrete high-weather-resistance protective agent comprises the following steps:
1) at room temperature (the room temperature is 25 +/-10 ℃), sequentially adding a diluent xylene, butyl acetate and propylene glycol monomethyl ether acetate into a mixing kettle, stirring and mixing, and then sequentially adding a dispersing agent, an acrylate leveling agent and an anti-ultraviolet agent for mixing;
2) stirring and dispersing for 10-15 minutes at 800r/min for 600-;
3) and (3) under the stirring condition, uniformly mixing the component A and the component B to obtain the pervious concrete high-weather-resistance protective agent.
Example 2
A high weather-resistant protective agent for pervious concrete is prepared by the following steps: a, B double components are mixed according to the weight proportion of 1, wherein the component A comprises 59.3 percent of fluorine-silicon modified acrylic resin, 10.5 percent of dimethylbenzene, 4.5 percent of butyl acetate, 4.5 percent of propylene glycol methyl ether acetate, 2 percent of dispersant, 10 percent of pigment, 0.6 percent of acrylate leveling agent, 0.6 percent of polyamide wax anti-settling wax slurry, 3 percent of barium sulfate and 5 percent of ultraviolet resistant agent according to the weight proportion, wherein the dispersant is a mixture of a high molecular polycarboxylic acid solution and a polysiloxane solution, and the ultraviolet resistant agent is bis (1,2,2,6, 6-pentamethyl-4-piperidyl) sebacate. The component B is an aliphatic isocyanate curing agent.
The rest of the examples are as in example 1
Example 3
A high-weather-resistant protective agent for pervious concrete is prepared by the following steps: 1, wherein the component A comprises 75 percent of fluorine-silicon modified acrylic resin, 9.5 percent of dimethylbenzene, 3.5 percent of butyl acetate, 3.5 percent of propylene glycol methyl ether acetate, 1 percent of dispersant, 3 percent of pigment, 0.4 percent of acrylate leveling agent, 0.4 percent of polyamide wax anti-settling slurry, 1.6 percent of barium sulfate and 2.1 percent of ultraviolet resistant agent, wherein the dispersant is a mixture of a high molecular polycarboxylic acid solution and a polysiloxane solution, and the ultraviolet resistant agent is bis (1,2,2,6, 6-pentamethyl-4-piperidyl) sebacate. The component B is an aliphatic isocyanate curing agent.
The rest of the example was as in example 1.
Comparative example 1
The organic protecting agent for pervious concrete consists of solvent type acrylic resin 60 wt%, xylene 8 wt%, butyl acetate 3 wt%, propylene glycol methyl ether acetate 3 wt%, dispersant 1 wt%, pigment 8 wt%, acrylate leveling agent 0.5 wt%, polyamide wax deposition preventing slurry 1 wt%, organic bentonite 1.0 wt%, deposited barium sulfate 13 wt% and chlorinated paraffin 1.5 wt%.
The pervious concrete high weather-resistant protective agent obtained in example 1 was subjected to performance testing, and the results are shown in table 1:
TABLE 1
As can be seen from Table 1, the pervious concrete high-weatherability protective agent prepared by the embodiment has higher indexes than the ordinary acrylic acid protective agent, and has more excellent durability, water resistance and weather resistance.
The pervious concrete high-weatherability protective agent prepared in example 1 is sprayed on the surface of pervious concrete, and the sprayed surface is naturally exposed for 24 months, and through comparison experiments with the existing protective agent at home and abroad, the obtained results are shown in table 2:
TABLE 2
As can be seen from Table 2, the pervious concrete high-weatherability protective agent prepared by the embodiment has stronger weatherability in gloss and color, obviously enhanced ultraviolet resistance and superior gloss and color retention effects compared with similar samples.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is to be construed by the appended claims and equivalents thereof.
Claims (9)
1. The high-weather-resistance protective agent for the pervious concrete is characterized in that: is prepared by mixing A, B components; the component A comprises fluorine-silicon modified acrylic resin, a diluent, a dispersing agent, barium sulfate, a pigment, an auxiliary agent and an anti-ultraviolet agent; the component B is an isocyanate curing agent; the A, B component has the weight ratio of 5-7: 1.
2. the pervious concrete high-weather-resistant protective agent as claimed in claim 1, wherein: the component A comprises 55-75 wt% of fluorine-silicon modified acrylic resin, 8-20 wt% of diluent, 1-2 wt% of dispersant, 0.5-5 wt% of barium sulfate, 0.7-1.3 wt% of assistant, 0.5-5 wt% of anti-ultraviolet agent and 3-13 wt% of pigment.
3. The pervious concrete high-weather-resistant protective agent as claimed in claim 2, characterized in that: the diluent is xylene, butyl acetate and propylene glycol methyl ether acetate, and the weight percentage of each component in the permeable concrete organic protective agent is 9.5-10.5% of xylene, 3.5-4.5% of butyl acetate and 3.5-4.5% of propylene glycol methyl ether acetate.
4. The pervious concrete high-weather-resistant protective agent as claimed in claim 2, characterized in that: the auxiliary agent is an acrylate leveling agent and polyamide wax anti-settling wax slurry, and the weight percentage of each component of the auxiliary agent in the permeable concrete organic protective agent is 0.4-0.6% of the acrylate leveling agent and 0.4-0.6% of the polyamide wax anti-settling wax slurry.
5. The pervious concrete high-weather-resistant protective agent as claimed in claim 2, characterized in that: the filler is barium sulfate.
6. The pervious concrete high-weather-resistant protective agent as claimed in claim 2, characterized in that: the dispersing agent is a mixture of a high-molecular polycarboxylic acid solution and a polysiloxane solution.
7. The pervious concrete high-weather-resistant protective agent as claimed in claim 2, characterized in that: the anti-ultraviolet agent is bis (1,2,2,6, 6-pentamethyl-4-piperidyl) sebacate.
8. The pervious concrete high-weather-resistant protective agent as claimed in claim 2, characterized in that: the component B is trimer aliphatic polyisocyanate curing agent.
9. The preparation method of the pervious concrete high-weather-resistance protective agent is characterized by comprising the following steps: the component A as claimed in claim 2, wherein the component A comprises the following components by weight percent, 1) under the stirring condition, sequentially adding the diluents xylene, butyl acetate and propylene glycol monomethyl ether acetate into a mixing kettle, stirring and mixing, and then sequentially adding the dispersing agent, the acrylate leveling agent and the anti-ultraviolet agent for mixing; 2) stirring and dispersing for 10-15 minutes at 800r/min for 600-; 3) according to the weight ratio of the component A to the component B, the component A and the component B are uniformly mixed under the stirring condition to obtain the pervious concrete high-weather-resistant protective agent.
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