CN112322085B - PMMA waterproof coating for intercity high-speed railway and urban light rail concrete bridge - Google Patents
PMMA waterproof coating for intercity high-speed railway and urban light rail concrete bridge Download PDFInfo
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- CN112322085B CN112322085B CN202010965405.4A CN202010965405A CN112322085B CN 112322085 B CN112322085 B CN 112322085B CN 202010965405 A CN202010965405 A CN 202010965405A CN 112322085 B CN112322085 B CN 112322085B
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- 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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/61—Additives non-macromolecular inorganic
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- 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
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- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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
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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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
Abstract
The invention discloses a PMMA waterproof coating for intercity high-speed railways and urban light rail concrete bridges, which consists of A, B, C three components; the raw materials of the component A comprise: methyl methacrylate prepolymer resin, methyl methacrylate, amyl acrylate, terpene resin, epoxy resin, polypropylene glycol dimethacrylate, propylene carbonate, a polymerization inhibitor, hollow mesoporous silica nanospheres, montmorillonite, graphene, a pigment, N-dimethyl-p-toluidine, N-diethylaniline, cobalt isooctanoate, an ultraviolet absorbent and an anti-precipitation auxiliary agent; the component B comprises the following raw materials: methyl methacrylate pre-polymerized resin, methyl methacrylate, amyl acrylate, methyl acrylate-perfluoroalkyl ethyl acrylate diblock copolymer, polyethylene glycol dimethacrylate, layered aluminum phosphate, hydrotalcite, multi-walled carbon nano-tubes, anti-precipitation auxiliary agent and pigment; the component C comprises a curing agent.
Description
Technical Field
The invention relates to the technical field of waterproof coatings, in particular to a PMMA waterproof coating for intercity high-speed railways and urban light rail concrete bridges.
Background
The concrete bridge is easy to be eroded by rainwater, and the waterproof layer paved on the bridge surface layer can reduce or inhibit various diseases of the concrete bridge surface caused by water erosion, effectively improve the durability of the bridge structure and prolong the service life of the concrete bridge. The polymethacrylic resin waterproof coating is a brand new concrete waterproof material, can be quickly cured and molded at room temperature or low temperature after construction to form an integrally compact, continuous and seamless high-strength and high-elasticity coating, realizes the balanced combination of various physical properties including tensile strength, tearing strength, impact toughness, hardness, low-temperature resistance and elongation at break, is currently used as a waterproof layer of a concrete bridge structure, but the existing polymethacrylic resin waterproof coating has the defect of poor water resistance and ultraviolet resistance and limits the application of the coating.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides the PMMA waterproof coating for the intercity high-speed railway and the urban light rail concrete bridge, which has good water resistance and excellent heat resistance and ultraviolet resistance, and is used for long protection time in the intercity high-speed railway and the urban light rail concrete bridge.
The invention provides a PMMA waterproof coating for intercity high-speed railways and urban light rail concrete bridges, which consists of three parts, namely a component A, a component B and a component C, wherein the weight ratio of the component A to the component B to the component C is 95-120: 70-85: 3-5.8;
the component A comprises the following raw materials in parts by weight: 20-55 parts of methyl methacrylate prepolymer resin, 10-15 parts of methyl methacrylate, 3-13 parts of amyl acrylate, 2-9 parts of terpene resin, 3-11 parts of epoxy resin, 3-11 parts of polypropylene glycol dimethacrylate, 2-5 parts of propylene carbonate, 0.05-0.3 part of polymerization inhibitor, 2-9 parts of hollow mesoporous silica nanosphere, 4-13 parts of montmorillonite, 5-18 parts of graphene, 2-4 parts of pigment, 0.1-0.55 part of N, N-dimethyl-p-toluidine, 0.05-0.38 part of N, N-diethylaniline, 0.05-0.38 part of cobalt isooctanoate, 0.1-0.7 part of ultraviolet absorbent and 0.1-1 part of anti-precipitation auxiliary agent;
the component B comprises the following raw materials in parts by weight: 20-55 parts of methyl methacrylate prepolymer resin, 10-15 parts of methyl methacrylate, 3-13 parts of amyl acrylate, 1-8 parts of methyl acrylate-perfluoroalkyl ethyl acrylate diblock copolymer, 5-13 parts of polyethylene glycol dimethacrylate, 3-11 parts of layered aluminum phosphate, 5-9 parts of hydrotalcite, 1-6 parts of multi-walled carbon nanotube, 0.1-1 part of anti-precipitation auxiliary agent and 2-4 parts of pigment;
the component C comprises a curing agent.
Preferably, the polymerization inhibitor is one or a mixture of more of hydroquinone, tertiary butyl hydroquinone and p-benzoquinone.
Preferably, the hollow mesoporous silica nanospheres are modified hollow mesoporous silica nanospheres; the modified hollow mesoporous silica nanosphere is prepared according to the following process: adding curcumin into absolute ethyl alcohol, uniformly stirring, adding hollow mesoporous silica nanospheres, stirring for 20-35h in the dark at room temperature, adding 3-aminopropyl triethoxysilane, stirring for 7-12h at room temperature, washing the product, and drying to obtain modified nanospheres; dispersing octaaminopropyl POSS in toluene, uniformly stirring, adding o-hydroxybenzoyl chloride, dropwise adding pyridine, stirring at room temperature for 30-45h under the protection of nitrogen, adding the modified nanospheres after the reaction is finished, stirring at 65-75 ℃ for 30-45h, filtering, and drying to obtain the modified hollow mesoporous silica nanospheres.
Preferably, the weight ratio of the curcumin to the absolute ethyl alcohol to the hollow mesoporous silica nanospheres to the 3-aminopropyltriethoxysilane is 10-15: 15-20: 3-8: 1-3; the weight ratio of octa-aminopropyl POSS, toluene, o-hydroxybenzoyl chloride, pyridine to modified nanospheres is 3-5: 50-150: 5-20: 0.05-0.2: 50-75.
Preferably, in the component A and the component B, the pigment is talcum powder and carbon black in a weight ratio of 1-3: 12-23.
Preferably, the ultraviolet absorbent is benzotriazole ultraviolet absorbent UV-P, benzotriazole ultraviolet absorbent UV-327 and benzophenone ultraviolet absorbent UV-1, and the weight ratio is 2-10: 1-4: 3-11.
Preferably, in the component A and the component B, the anti-precipitation auxiliary agent is organically modified bentonite or fumed silica.
Preferably, the curing agent is methyl ethyl ketone peroxide and cumene hydroperoxide in a weight ratio of 3-10: 0.5-2 of the mixture.
Preferably, the methyl methacrylate prepolymer resin can be obtained by putting hard monomers methyl methacrylate, soft monomers butyl acrylate and benzoyl peroxide into a reactor with a temperature control and stirring device, heating for polymerization, adding a chain terminator to stop the polymerization reaction, and cooling.
Preferably, the octaaminopropyl POSS can be prepared by taking 3-aminopropyl triethoxysilane as a raw material and taking alcohols and deionized water as solvents through hydrolytic condensation reaction under the catalysis of tetramethylammonium hydroxide.
In the raw materials of the PMMA waterproof coating for the intercity high-speed railway and the urban light rail concrete bridge, methyl methacrylate prepolymer resin is specifically used as a main material, methyl methacrylate is added as a hard monomer, amyl acrylate is used as a soft monomer, polypropylene glycol dimethacrylate and polyethylene glycol dimethacrylate are used as crosslinking monomers, the content of each monomer is controlled, the rigidity and flexibility of the coating are adjusted, the coating has excellent flexibility and hardness, the crosslinking density of the coating is improved, an interpenetrating network structure is formed, and the strength and the tear resistance of the coating are improved; terpene resin, epoxy resin and methyl acrylate-perfluoroalkyl ethyl acrylate diblock copolymer are added for modification, a coarse structure is formed in a system, and the synergistic effect of various substances is exerted, so that the obtained coating has good water resistance, high adhesive force and good heat resistance, and hollow mesoporous silica nanospheres, montmorillonite, graphene, layered aluminum phosphate, hydrotalcite and multi-walled carbon nanotubes are specifically selected to be matched as fillers to exert the synergistic effect, so that the obtained coating has good water resistance, excellent corrosion resistance, good thermal stability and ultraviolet aging resistance, in the preparation process of the modified hollow mesoporous silica nanospheres in a preferred mode, firstly, curcumin and the hollow mesoporous silica nanospheres are taken as raw materials, are stirred at room temperature in a dark place to be adsorbed on the hollow mesoporous silica nanospheres, and then, 3-aminopropyltriethoxysilane is taken as a modifier to modify the hollow mesoporous silica nanospheres, amino is introduced on the surface of the nano-sphere to obtain a modified nano-sphere; the preparation method comprises the steps of taking octa-aminopropyl POSS and o-hydroxybenzoyl chloride as raw materials, controlling reaction conditions to enable amino in the octa-aminopropyl POSS to react with acyl chloride in the o-hydroxybenzoyl chloride, introducing the o-hydroxybenzoyl group with an ultraviolet absorption group into the POSS, adding modified nanospheres to react with active groups in the modified nanospheres, combining the modified hollow mesoporous silica nanospheres and the POSS, and adding the modified hollow mesoporous silica nanospheres into a system, wherein on one hand, the modified hollow mesoporous silica nanospheres are synergistic with montmorillonite, graphene, layered aluminum phosphate, hydrotalcite and multi-walled carbon nanotubes to endow the coating with excellent waterproofness, corrosion resistance and heat resistance, on the other hand, the modified hollow mesoporous silica nanospheres have a synergistic effect with a specific ultraviolet absorbent consisting of a benzotriazole ultraviolet absorbent UV-P, a benzotriazole ultraviolet absorbent UV-327 and a benzophenone ultraviolet absorbent UV-1, free radicals caused by ultraviolet rays can be efficiently captured, so that the paint has excellent ultraviolet aging resistance, and the service life of the paint is prolonged; n, N-dimethyl-p-toluidine, N-diethylaniline and cobalt isooctanoate are specifically selected to be matched as an accelerator, so that the obtained coating is fast in curing, thorough in curing and high in crosslinking density.
As proved by performance tests of a coating prepared by the coating, the tensile strength (GB/T528) is more than or equal to 17MPa, the elongation at break (GB/T528) is more than 167%, and the coating has low-temperature flexibility (minus 25 ℃) and no crack (GB/T16777).
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
The invention provides a PMMA waterproof coating for intercity high-speed railways and urban light rail concrete bridges, which consists of three parts, namely a component A, a component B and a component C, wherein the weight ratio of the component A to the component B to the component C is 120: 70: 5.8;
the component A comprises the following raw materials in parts by weight: 20 parts of methyl methacrylate prepolymer resin, 15 parts of methyl methacrylate, 3 parts of amyl acrylate, 9 parts of terpene resin, 3 parts of epoxy resin, 11 parts of polypropylene glycol dimethacrylate, 4 parts of propylene carbonate, 0.1 part of polymerization inhibitor, 2 parts of hollow mesoporous silica nanospheres, 13 parts of montmorillonite, 5 parts of graphene, 4 parts of pigment, 0.55 part of N, N-dimethyl-p-toluidine, 0.05 part of N, N-diethylaniline, 0.38 part of cobalt isooctanoate, 0.1 part of ultraviolet absorbent and 1 part of anti-precipitation auxiliary agent;
the component B comprises the following raw materials in parts by weight: 20 parts of methyl methacrylate prepolymer resin, 15 parts of methyl methacrylate, 3 parts of amyl acrylate, 8 parts of methyl acrylate-perfluoroalkyl ethyl acrylate diblock copolymer, 7 parts of polyethylene glycol dimethacrylate, 5 parts of layered aluminum phosphate, 5 parts of hydrotalcite, 6 parts of multi-walled carbon nanotube, 1 part of anti-precipitation auxiliary agent and 4 parts of pigment;
the component C comprises a curing agent.
Example 2
The invention provides a PMMA waterproof coating for intercity high-speed railways and urban light rail concrete bridges, which consists of three parts, namely a component A, a component B and a component C, wherein the weight ratio of the component A to the component B to the component C is 95: 85: 3;
the component A comprises the following raw materials in parts by weight: 55 parts of methyl methacrylate prepolymer resin, 10 parts of methyl methacrylate, 13 parts of amyl acrylate, 2 parts of terpene resin, 8 parts of epoxy resin, 3 parts of polypropylene glycol dimethacrylate, 2 parts of propylene carbonate, 0.3 part of polymerization inhibitor, 9 parts of hollow mesoporous silica nanosphere, 4 parts of montmorillonite, 18 parts of graphene, 2 parts of pigment, 0.3 part of N, N-dimethyl-p-toluidine, 0.38 part of N, N-diethylaniline, 0.05 part of cobalt isooctanoate, 0.7 part of ultraviolet absorbent and 0.1 part of anti-precipitation auxiliary agent;
the component B comprises the following raw materials in parts by weight: 55 parts of methyl methacrylate prepolymer resin, 10 parts of methyl methacrylate, 13 parts of amyl acrylate, 1 part of methyl acrylate-perfluoroalkyl ethyl acrylate diblock copolymer, 5 parts of polyethylene glycol dimethacrylate, 11 parts of layered aluminum phosphate, 7 parts of hydrotalcite, 1 part of multi-walled carbon nanotube, 0.1 part of anti-precipitation auxiliary agent and 2 parts of pigment;
the component C comprises a curing agent.
Example 3
The invention provides a PMMA waterproof coating for intercity high-speed railways and urban light rail concrete bridges, which consists of three parts, namely a component A, a component B and a component C, wherein the weight ratio of the component A to the component B to the component C is 120: 77: 5;
the component A comprises the following raw materials in parts by weight: 28 parts of methyl methacrylate prepolymer resin, 14 parts of methyl methacrylate, 6 parts of amyl acrylate, 9 parts of terpene resin, 11 parts of epoxy resin, 9 parts of polypropylene glycol dimethacrylate, 5 parts of propylene carbonate, 0.05 part of hydroquinone, 8 parts of hollow mesoporous silica nanospheres, 8 parts of montmorillonite, 13 parts of graphene, 0.8 part of talcum powder, 3.2 parts of carbon black, 0.1 part of N, N-dimethyl-P-toluidine, 0.3 part of N, N-diethylaniline, 0.3 part of cobalt isooctanoate, 0.3 part of benzotriazole ultraviolet absorbent UV-P, 0.78 part of benzotriazole ultraviolet absorbent UV-3270.03, 10.27 parts of benzophenone ultraviolet absorbent UV-10, and 0.87 part of anti-precipitation auxiliary agent organic modified bentonite;
the component B comprises the following raw materials in parts by weight: 28 parts of methyl methacrylate prepolymer resin, 14 parts of methyl methacrylate, 6 parts of amyl acrylate, 2 parts of methyl acrylate-perfluoroalkyl ethyl acrylate diblock copolymer, 13 parts of polyethylene glycol dimethacrylate, 3 parts of layered aluminum phosphate, 9 parts of hydrotalcite, 5 parts of multi-walled carbon nanotube, 0.87 part of anti-precipitation auxiliary agent organic modified bentonite, 0.8 part of talcum powder and 3.2 parts of carbon black;
the component C comprises methyl ethyl ketone peroxide and cumene hydroperoxide according to the weight ratio of 3: 2;
the hollow mesoporous silica nanospheres are modified hollow mesoporous silica nanospheres; the modified hollow mesoporous silica nanosphere is prepared according to the following process: adding curcumin into absolute ethyl alcohol, uniformly stirring, adding hollow mesoporous silica nanospheres, stirring at room temperature in a dark place for 35 hours, adding 3-aminopropyl triethoxysilane, stirring at room temperature for 7 hours, washing the product, and drying to obtain modified nanospheres; dispersing octa-aminopropyl POSS in toluene, uniformly stirring, adding o-hydroxybenzoyl chloride, dropwise adding pyridine, stirring at room temperature for 45 hours under the protection of nitrogen, adding modified nanospheres after the reaction is finished, stirring at 65 ℃ for 45 hours, filtering, and drying to obtain the modified hollow mesoporous silica nanospheres; wherein the weight ratio of the curcumin to the absolute ethyl alcohol to the hollow mesoporous silica nanospheres to the 3-aminopropyltriethoxysilane is 10: 15: 3: 3; the weight ratio of octa-aminopropyl POSS, toluene, o-hydroxybenzoyl chloride, pyridine and modified nanospheres is 3: 150: 5: 0.2: 56.
example 4
The invention provides a PMMA waterproof coating for intercity high-speed railways and urban light rail concrete bridges, which consists of three parts, namely a component A, a component B and a component C, wherein the weight ratio of the component A to the component B to the component C is 95: 82: 4;
the component A comprises the following raw materials in parts by weight: 50 parts of methyl methacrylate prepolymer resin, 11 parts of methyl methacrylate, 8 parts of amyl acrylate, 3 parts of terpene resin, 8 parts of epoxy resin, 5 parts of polypropylene glycol dimethacrylate, 2.3 parts of propylene carbonate, 0.11 part of polymerization inhibitor, 3 parts of hollow mesoporous silica nanospheres, 11 parts of montmorillonite, 8 parts of graphene, 2.8 parts of pigment, 0.32 part of N, N-dimethyl-p-toluidine, 0.15 part of N, N-diethylaniline, 0.21 part of cobalt isooctanoate, 0.1 part of ultraviolet absorbent and 0.35 part of anti-precipitation auxiliary agent fumed silica;
the component B comprises the following raw materials in parts by weight: 50 parts of methyl methacrylate prepolymer resin, 11 parts of methyl methacrylate, 8 parts of amyl acrylate, 7 parts of methyl acrylate-perfluoroalkyl ethyl acrylate diblock copolymer, 8 parts of polyethylene glycol dimethacrylate, 5.7 parts of layered aluminum phosphate, 6.7 parts of hydrotalcite, 2 parts of multi-walled carbon nanotube, 0.35 part of anti-precipitation auxiliary agent fumed silica and 2.8 parts of pigment;
the component C comprises methyl ethyl ketone peroxide and cumene hydroperoxide according to the weight ratio of 10: 0.5 of a mixture;
the polymerization inhibitor is hydroquinone and p-benzoquinone, and the weight ratio of the polymerization inhibitor to the p-benzoquinone is 5: 2;
the hollow mesoporous silica nanospheres are modified hollow mesoporous silica nanospheres; the modified hollow mesoporous silica nanosphere is prepared according to the following process: adding curcumin into absolute ethyl alcohol, uniformly stirring, adding hollow mesoporous silica nanospheres, stirring at room temperature in a dark place for 20 hours, adding 3-aminopropyl triethoxysilane, stirring at room temperature for 12 hours, washing a product, and drying to obtain modified nanospheres; dispersing octa-aminopropyl POSS in toluene, uniformly stirring, adding o-hydroxybenzoyl chloride, dropwise adding pyridine, stirring for 30 hours at room temperature under the protection of nitrogen, adding modified nanospheres after the reaction is finished, stirring for 30 hours at 75 ℃, filtering and drying to obtain the modified hollow mesoporous silica nanospheres; wherein the weight ratio of the curcumin to the absolute ethyl alcohol to the hollow mesoporous silica nanospheres to the 3-aminopropyltriethoxysilane is 15: 20: 7: 1; the weight ratio of octa-aminopropyl POSS, toluene, o-hydroxybenzoyl chloride, pyridine and modified nanospheres is 5: 50: 20: 0.05: 75;
in the component A and the component B, the pigment is talcum powder and carbon black according to the weight ratio of 1: 23, a mixture of;
the ultraviolet absorbent is benzotriazole ultraviolet absorbent UV-P, benzotriazole ultraviolet absorbent UV-327 and benzophenone ultraviolet absorbent UV-1, and the weight ratio is 2: 4: 3 in a mixture of two or more.
Example 5
The invention provides a PMMA waterproof coating for intercity high-speed railways and urban light rail concrete bridges, which consists of three parts, namely a component A, a component B and a component C, wherein the weight ratio of the component A to the component B to the component C is 100: 83: 4;
the component A comprises the following raw materials in parts by weight: 38 parts of methyl methacrylate prepolymer resin, 10 parts of methyl methacrylate, 11 parts of amyl acrylate, 5 parts of terpene resin, 4 parts of epoxy resin, 3.3 parts of polypropylene glycol dimethacrylate, 3 parts of propylene carbonate, 0.21 part of polymerization inhibitor tert-butyl hydroquinone, 2 parts of hollow mesoporous silica nanospheres, 4.5 parts of montmorillonite, 7 parts of graphene, 2.2 parts of pigment, 0.4 part of N, N-dimethyl-p-toluidine, 0.12 part of N, N-diethylaniline, 0.1 part of cobalt isooctanoate, 0.17 part of ultraviolet absorbent and 0.35 part of anti-precipitation auxiliary agent organic modified bentonite;
the component B comprises the following raw materials in parts by weight: 38 parts of methyl methacrylate prepolymer resin, 10 parts of methyl methacrylate, 11 parts of amyl acrylate, 4 parts of methyl acrylate-perfluoroalkyl ethyl acrylate diblock copolymer, 8 parts of polyethylene glycol dimethacrylate, 5 parts of layered aluminum phosphate, 6 parts of hydrotalcite, 4 parts of multi-walled carbon nanotube, 0.35 part of anti-precipitation auxiliary agent organic modified bentonite and 2.2 parts of pigment;
the component C comprises methyl ethyl ketone peroxide and cumene hydroperoxide according to the weight ratio of 6: 1;
the hollow mesoporous silica nanospheres are modified hollow mesoporous silica nanospheres; the modified hollow mesoporous silica nanosphere is prepared according to the following process: adding curcumin into absolute ethyl alcohol, uniformly stirring, adding hollow mesoporous silica nanospheres, stirring at room temperature in a dark place for 20 hours, adding 3-aminopropyl triethoxysilane, stirring at room temperature for 9 hours, washing a product, and drying to obtain modified nanospheres; dispersing octaaminopropyl POSS in toluene, uniformly stirring, adding o-hydroxybenzoyl chloride, dropwise adding pyridine, stirring at room temperature for 38 hours under the protection of nitrogen, adding modified nanospheres after the reaction is finished, stirring at 68 ℃ for 42 hours, filtering, and drying to obtain the modified hollow mesoporous silica nanospheres; wherein the weight ratio of the curcumin to the absolute ethyl alcohol to the hollow mesoporous silica nanospheres to the 3-aminopropyltriethoxysilane is 11: 17: 8: 2; the weight ratio of octa-aminopropyl POSS, toluene, o-hydroxybenzoyl chloride, pyridine and modified nanospheres is 4: 120: 11: 0.1: 50;
in the component A and the component B, the pigment is talcum powder and carbon black according to the weight ratio of 1: 17;
the ultraviolet absorbent is benzotriazole ultraviolet absorbent UV-P, benzotriazole ultraviolet absorbent UV-327 and benzophenone ultraviolet absorbent UV-1, and the weight ratio is 3: 2: 11, in a mixture.
Example 6
The invention provides a PMMA waterproof coating for intercity high-speed railways and urban light rail concrete bridges, which consists of three parts, namely a component A, a component B and a component C, wherein the weight ratio of the component A to the component B to the component C is 110: 80: 5;
the component A comprises the following raw materials in parts by weight: 40 parts of methyl methacrylate prepolymer resin, 11 parts of methyl methacrylate, 5 parts of amyl acrylate, 6 parts of terpene resin, 7 parts of epoxy resin, 5.5 parts of polypropylene glycol dimethacrylate, 3 parts of propylene carbonate, 0.18 part of polymerization inhibitor hydroquinone, 5 parts of hollow mesoporous silica nanospheres, 9 parts of montmorillonite, 11 parts of graphene, 3.1 parts of pigment, 0.28 part of N, N-dimethyl-p-toluidine, 0.3 part of N, N-diethylaniline, 0.2 part of cobalt isooctanoate, 0.4 part of ultraviolet absorbent and 0.6 part of anti-precipitation auxiliary agent organic modified bentonite;
the component B comprises the following raw materials in parts by weight: 48 parts of methyl methacrylate prepolymer resin, 14 parts of methyl methacrylate, 7 parts of amyl acrylate, 4.3 parts of methyl acrylate-perfluoroalkyl ethyl acrylate diblock copolymer, 8.7 parts of polyethylene glycol dimethacrylate, 6.5 parts of layered aluminum phosphate, 6 parts of hydrotalcite, 2 parts of multi-walled carbon nanotube, 0.1 part of anti-precipitation auxiliary agent organic modified bentonite and 3.2 parts of pigment;
the component C comprises methyl ethyl ketone peroxide and cumene hydroperoxide according to the weight ratio of 3: 1.6;
the hollow mesoporous silica nanospheres are modified hollow mesoporous silica nanospheres; the modified hollow mesoporous silica nanosphere is prepared according to the following process: adding curcumin into absolute ethyl alcohol, uniformly stirring, adding hollow mesoporous silica nanospheres, stirring for 30h in the dark at room temperature, adding 3-aminopropyl triethoxysilane, stirring for 8.5h at room temperature, washing the product, and drying to obtain modified nanospheres; dispersing octaaminopropyl POSS in toluene, uniformly stirring, adding o-hydroxybenzoyl chloride, dropwise adding pyridine, stirring at room temperature for 36 hours under the protection of nitrogen, adding modified nanospheres after the reaction is finished, stirring at 70 ℃ for 40 hours, filtering, and drying to obtain the modified hollow mesoporous silica nanospheres; wherein the weight ratio of the curcumin to the absolute ethyl alcohol to the hollow mesoporous silica nanospheres to the 3-aminopropyltriethoxysilane is 12: 17: 5: 2; the weight ratio of octa-aminopropyl POSS, toluene, o-hydroxybenzoyl chloride, pyridine and modified nanospheres is 3: 100: 10: 0.1: 70;
in the component A and the component B, the pigment is talcum powder and carbon black according to the weight ratio of 2.2: 19, or a mixture thereof;
the ultraviolet absorbent is benzotriazole ultraviolet absorbent UV-P, benzotriazole ultraviolet absorbent UV-327 and benzophenone ultraviolet absorbent UV-1, and the weight ratio is 5: 3: 9, and (b).
The coating in the embodiment 6 is used for preparing a test piece for a waterproof layer, the test piece is cured for 7 days under standard conditions after being dried, and the test result of the overall performance test is as follows: water impermeability (0.6MPa, 24 h): water impermeable (GB/T16777); alkali resistance (saturated calcium hydroxide solution, 240 h): no foaming, no cracking, no shedding (GB/T9274); acid resistance (2% sulfuric acid, 2% hydrochloric acid, 240 h): no foaming, no cracking, no shedding (GB/T9274); salt spray resistance test (1000 h): no foaming, no cracking, no falling off (GB/T1771); ultraviolet accelerated aging resistance (1000 h): no obvious discoloration and no powdering cracking on the surface (GB/T14522); the adhesion (GB/T5210-2006) is 3.5 MPa; the heat resistance (100 ℃, 2h) is free from bubbling and flowing (GB/T16777).
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The PMMA waterproof coating for the intercity high-speed railway and the urban light rail concrete bridge is characterized by comprising three parts, namely a component A, a component B and a component C, wherein the weight ratio of the component A to the component B to the component C is 95-120: 70-85: 3-5.8;
the component A comprises the following raw materials in parts by weight: 20-55 parts of methyl methacrylate prepolymer resin, 10-15 parts of methyl methacrylate, 3-13 parts of amyl acrylate, 2-9 parts of terpene resin, 3-11 parts of epoxy resin, 3-11 parts of polypropylene glycol dimethacrylate, 2-5 parts of propylene carbonate, 0.05-0.3 part of polymerization inhibitor, 2-9 parts of hollow mesoporous silica nanosphere, 4-13 parts of montmorillonite, 5-18 parts of graphene, 2-4 parts of pigment, 0.1-0.55 part of N, N-dimethyl-p-toluidine, 0.05-0.38 part of N, N-diethylaniline, 0.05-0.38 part of cobalt isooctanoate, 0.1-0.7 part of ultraviolet absorbent and 0.1-1 part of anti-precipitation auxiliary agent;
the component B comprises the following raw materials in parts by weight: 20-55 parts of methyl methacrylate prepolymer resin, 10-15 parts of methyl methacrylate, 3-13 parts of amyl acrylate, 1-8 parts of methyl acrylate-perfluoroalkyl ethyl acrylate diblock copolymer, 5-13 parts of polyethylene glycol dimethacrylate, 3-11 parts of layered aluminum phosphate, 5-9 parts of hydrotalcite, 1-6 parts of multi-walled carbon nanotube, 0.1-1 part of anti-precipitation auxiliary agent and 2-4 parts of pigment;
the component C comprises a curing agent;
the hollow mesoporous silica nanospheres are modified hollow mesoporous silica nanospheres; the modified hollow mesoporous silica nanosphere is prepared according to the following process: adding curcumin into absolute ethyl alcohol, uniformly stirring, adding hollow mesoporous silica nanospheres, stirring for 20-35h in the dark at room temperature, adding 3-aminopropyl triethoxysilane, stirring for 7-12h at room temperature, washing the product, and drying to obtain modified nanospheres; dispersing octa-aminopropyl POSS in toluene, uniformly stirring, adding o-hydroxybenzoyl chloride, dropwise adding pyridine, stirring at room temperature for 30-45h under the protection of nitrogen, adding modified nanospheres after the reaction is finished, stirring at 65-75 ℃ for 30-45h, filtering, and drying to obtain the modified hollow mesoporous silica nanospheres;
the ultraviolet absorbent is benzotriazole ultraviolet absorbent UV-P, benzotriazole ultraviolet absorbent UV-327 and benzophenone ultraviolet absorbent UV-1, and the weight ratio is 2-10: 1-4: 3-11.
2. The PMMA waterproof paint for intercity high-speed railways and urban light rail concrete bridges of claim 1, wherein the polymerization inhibitor is one or a mixture of hydroquinone, tert-butyl hydroquinone and p-benzoquinone.
3. The PMMA waterproof coating for intercity high-speed railways and urban light rail concrete bridges of claim 1 is characterized in that the weight ratio of curcumin to absolute ethyl alcohol to hollow mesoporous silica nanospheres to 3-aminopropyltriethoxysilane is 10-15: 15-20: 3-8: 1-3; the weight ratio of octa-aminopropyl POSS, toluene, o-hydroxybenzoyl chloride, pyridine to modified nanospheres is 3-5: 50-150: 5-20: 0.05-0.2: 50-75.
4. The PMMA waterproof coating for intercity high-speed railways and urban light rail concrete bridges of claim 1, wherein in the component A and the component B, the pigment is talcum powder and carbon black according to the weight ratio of 1-3: 12-23.
5. The PMMA waterproof coating for intercity high-speed railways and urban light rail concrete bridges of claim 1, wherein in the component A and the component B, the anti-precipitation auxiliary agent is organically modified bentonite or fumed silica.
6. The PMMA waterproof coating for intercity high-speed railways and urban light rail concrete bridges of any one of claims 1 to 5, wherein the curing agent is methyl ethyl ketone peroxide and cumene hydroperoxide in a weight ratio of 3-10: 0.5-2 of the mixture.
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| CN115433491B (en) * | 2022-03-10 | 2023-12-22 | 上海恒方防腐工程有限公司 | Anti-skid material capable of easily breaking ice on pavement and application |
| CN117534326A (en) * | 2023-12-12 | 2024-02-09 | 广东兴辉陶瓷集团有限公司 | Preparation method of rock plate protection glaze and printed rock plate |
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