CN113217077B - Construction method of tunnel fireproof coating - Google Patents

Construction method of tunnel fireproof coating Download PDF

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Publication number
CN113217077B
CN113217077B CN202110493117.8A CN202110493117A CN113217077B CN 113217077 B CN113217077 B CN 113217077B CN 202110493117 A CN202110493117 A CN 202110493117A CN 113217077 B CN113217077 B CN 113217077B
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tunnel
spraying
water
paint
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CN113217077A (en
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王睿
宁娜
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Hunan Hongsen Technology Co ltd
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Hunan Hongsen Technology Co ltd
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
    • E21F5/06—Fluids used for spraying
    • 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
    • C09D175/02—Polyureas
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/22—Luminous paints
    • 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • 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
    • C08K2201/011—Nanostructured additives

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
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  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
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  • Environmental & Geological Engineering (AREA)
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  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention provides a construction method of a tunnel fireproof coating, which comprises the following steps: spraying a silane coupling agent on the surface of the substrate to serve as a substrate; spraying non-expansion water-based fireproof paint on the surface of the substrate for multiple times to form a base layer with the thickness of 10-12 mm; spraying a surface layer on the surface of the base layer, wherein the surface layer spraying process comprises the following steps: dividing a tunnel portal into tunnel entrance and exit sections within 60 meters, spraying water-based energy storage luminous paint with the thickness of 0.25-0.4mm on the tunnel entrance and exit sections, extending inwards from the tunnel portal, and gradually reducing the thickness of the paint by 0.03-0.05mm every 15 meters; and spraying a multifunctional water paint with the thickness of 0.2-0.36mm on the middle section of the tunnel. According to the construction method of the tunnel fireproof coating, the luminous intensity of the coating changes according to the intensity of light within the range of 60 meters at the tunnel opening, so that the brightness difference between the inside and the outside of the tunnel opening is reduced, and the phenomena of black holes and white holes in the tunnel are eliminated; the middle section coating of the tunnel has the functions of luminescence and anions, so that the tunnel can be continuously illuminated, the air in the tunnel can be effectively purified, and the running cost of an exhaust system is reduced.

Description

Construction method of tunnel fireproof coating
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a construction method of a tunnel fireproof coating.
Background
Along with the rapid development of the traffic highway construction in China, the highway tunnel construction is in full play, and a large number of tunnels are constructed, so that convenience is brought to the transportation of people, and meanwhile, the management problem is also exposed at the operation stage. Firstly, because the illumination needs to be carried out for 24 hours uninterruptedly in a dark tunnel environment, the illumination power consumption in operation management is high, the cost is high, so that a plurality of units cannot bear the operation and maintenance cost of the tunnel, the illumination lamp is often incompletely turned on in the actual operation management of the highway tunnel in a plurality of places in China, the illumination brightness of the road surface of the operation of the highway tunnel is insufficient, and the difficulty is brought to safe driving; secondly, due to the change of light intensity, the phenomenon of black holes and white holes easily occur at the inlet section and the outlet section of the tunnel, so that hidden danger is caused for drivers to safely drive; thirdly, along with the increase of tunnel mileage, the tail gas content in the tunnel increases, and the air in the tunnel needs to be replaced through an exhaust system, and the exhaust system is high in operation cost and poor in exhaust effect.
In view of the above, an object of the present invention is to provide a new technology for solving the above-mentioned technical problems.
Disclosure of Invention
The invention aims to provide a construction method of a tunnel fireproof coating, which comprises the steps of respectively spraying water-based coatings with different components on an inlet section and an outlet section of a tunnel and a middle section of the tunnel, wherein the luminous intensity of the coating is changed according to the intensity of light within a range of 60 meters of a tunnel opening so as to reduce the brightness difference between the inside and the outside of the tunnel opening and eliminate the phenomena of black holes and white holes in the tunnel; the middle section coating of the tunnel has the functions of luminescence and anions, so that the tunnel can be continuously illuminated, the illumination operation cost is saved, the air in the tunnel can be effectively purified, and the operation cost of an exhaust system is reduced.
In order to solve the problems, the technical scheme of the invention is as follows:
a construction method of a tunnel fireproof coating comprises the following steps:
s1, performing surface treatment on a tunnel lining to enable the surface to be flat and free of peeling and cracks;
s2, spraying a silane coupling agent on the surface of the substrate to serve as a substrate, wherein the thickness of the substrate is 25-30 mu m;
step S3, spraying non-expansion water-based fireproof paint on the surface of the substrate for multiple times to form a base layer with the thickness of 10-12 mm;
step S4, spraying a surface layer on the surface of the base layer, wherein the surface layer spraying process comprises the following steps:
s41, dividing a tunnel portal into tunnel entrance and exit sections within 60 meters, spraying water-based energy storage luminous paint on the tunnel entrance and exit sections, and comprising the following steps:
mixing the water-based energy-storage luminous paint with a certain amount of water, and stirring the mixture into thick paste by using a stirrer, wherein the water-based energy-storage luminous paint comprises the following components in parts by weight:
30-40 parts of aqueous polyurea resin, 10-15 parts of aqueous fluorocarbon resin, 10-15 parts of aqueous epoxy resin, 15-25 parts of energy storage luminescent material, 5-8 parts of flame retardant, 3-4 parts of dispersing agent, 1-2 parts of flatting agent, 5-8 parts of curing agent and 50-60 parts of water;
the energy storage luminescent material is an aqueous organic coating luminescent material and comprises the following components in parts by weight:
1 part of fluorine-containing acrylic acid monomer, 1 part of vinylidene chloride, 1 part of vinyl acetate, 1 part of glycidyl methacrylate, 6 parts of methyl methacrylate, 6 parts of butyl acrylate, 2 parts of isobornyl methacrylate, 1 part of AH-171 vinyl trimethoxy silane, 1 part of sodium allylsulfonate, 30 parts of propylene glycol methyl ether, 20 parts of n-butyl alcohol, 30 parts of nano rare earth aluminate and 2 parts of AIBN azodiisobutyronitrile;
spraying from the waist to the top of the tunnel by adopting a spraying machine to form a surface layer, wherein the thickness of the surface layer is 0.25-0.4mm; extending inwards from the tunnel portal, and gradually reducing the thickness of the coating by 0.03-0.05mm every 15 meters;
step S42, spraying multifunctional water paint on the middle section of the tunnel, comprising the following steps:
mixing the multifunctional water-based paint with a certain amount of water, and stirring the mixture into thick paste by using a stirrer, wherein the multifunctional water-based paint comprises the following components in parts by weight:
35-38 parts of aqueous polyurea resin, 12-18 parts of aqueous fluorocarbon resin, 8-10 parts of aqueous vinyl chloride-vinyl acetate copolymer resin, 18-22 parts of functional material, 5-8 parts of flame retardant, 8-10 parts of auxiliary agent and 50-60 parts of water;
the functional material is an aqueous organic coating material and comprises the following components in parts by weight:
20 parts of nano rare earth aluminate, 10 parts of nano negative ion powder, 5 parts of nano titanium dioxide, 1 part of trifluoroethyl methacrylate, 1 part of vinylidene chloride, 1 part of vinyl acetate, 6 parts of ethyl methacrylate, 6 parts of butyl acrylate, 2 parts of isobornyl methacrylate, 1 part of AH-171 vinyl trimethoxy silane, 1 part of sodium allylsulfonate, 25 parts of propylene glycol methyl ether, 30 parts of isopropanol and 2 parts of dimethyl azodiisobutyrate, wherein the nano negative ion powder is nano silicate;
and spraying from the waist to the top of the tunnel by adopting a spraying machine to form a surface layer, wherein the thickness of the surface layer is 0.2-0.36mm.
Further, the water-based energy storage luminous paint spraying process of the tunnel inlet and outlet sections adopts a three-layer spraying forming process, and specifically comprises the following steps:
spraying primer with the dosage of 0.4kg/m 2 -0.45kg/m 2 The thickness is 0.15-0.2mm;
spraying a first layer of finish paint with the dosage of 0.3kg/m 2 -0.35kg/m 2 The thickness is 0.08-0.12mm;
spraying a second layer of finish paint with the dosage of 0.1kg/m 2 -0.12kg/m 2 The thickness is 0.03-0.05mm.
Further, the multifunctional water-based paint in the step S42 also comprises 1-2 parts of pigment, wherein the pigment is blue or white, the top of the middle section of the tunnel is sprayed into a blue sky and white pattern, and the waist of the middle section of the tunnel is sprayed into blue.
Further, the multifunctional water-based paint spraying process of the tunnel middle section adopts a three-layer spraying process, and specifically comprises the following steps:
spraying blue primer with the dosage of 0.4kg/m 2 -0.45kg/m 2 The thickness is 0.15-0.2mm;
spraying white cloud paint with the dosage of 0.3kg/m 2 -0.35kg/m 2 The thickness is 0.03-0.15mm;
spraying colorless finishing paint with the dosage of 0.1kg/m 2 -0.12kg/m 2 The thickness is 0.03-0.05mm.
Further, in step S3, the base layer spraying process includes the following steps:
mixing the non-expansion water-based fireproof paint and water according to the proportion of 1 (0.7-0.8), and stirring into thick paste by using a stirrer;
spraying from the waist to the top of the tunnel by using a spraying machine, wherein the thickness of the first spraying layer is 3-4mm, and spraying for the second time after the first spraying layer is dried completely to form a second spraying layer; this was cycled until the sprayed layer thickness reached 10-12mm.
Further, the non-intumescent aqueous fire-retardant coating is a type 106-2 non-intumescent aqueous fire-retardant coating.
The construction method of the tunnel fireproof coating provided by the invention has the beneficial effects that:
1. according to the construction method of the tunnel fireproof coating, the water-based energy-storage luminous coating is used at the tunnel entrance and exit section, and the light emitted by the sunlight irradiates, so that the light of the tunnel entrance and exit section is adapted to the external light, the brightness difference between the inside and outside of the tunnel entrance is reduced, the phenomena of black holes and white holes in the tunnel are eliminated, and the driving safety in the tunnel is improved; meanwhile, the surface layer sprayed by the water-based energy storage luminous paint extends inwards from the tunnel portal, the thickness of the coating is gradually reduced by 0.03-0.05mm every 15 meters, so that the luminous brightness of the coating is gradually weakened, and then the coating is connected with the luminous brightness of the middle section of the tunnel, the light brightness difference in the tunnel is reduced, and the comfort of the luminous environment is comprehensively improved; the multifunctional water-based paint is used in the middle section of the tunnel, has the functions of emitting light and providing anions, can continuously illuminate the tunnel, saves the design illumination operation cost, contains nano anions and nano titanium dioxide, can effectively purify the air in the tunnel, ensures that the coating has the characteristics of resisting bacteria and mildew, and reduces the operation cost of an exhaust system.
2. According to the construction method of the tunnel fireproof coating, firstly, the fireproof coating with the thickness of 10-12mm is sprayed on the inner wall of the tunnel, then the surface of the fireproof coating is sprayed with the surface layer with the thickness of 0.2-0.4mm, and the surface layer material also has fireproof performance, so that the fireproof time of the tunnel coating can reach 150-180min.
Detailed Description
In order to better understand the technical solution in the embodiments of the present invention and make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the present invention will be further described.
The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and are understood to encompass values approaching those ranges or values. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and should be considered as specifically disclosed herein.
According to the construction method of the tunnel fireproof coating, different coatings are respectively used as the surface layers at the tunnel entrance and exit sections and the middle section, wherein the surface layer material of the tunnel entrance and exit sections mainly has an energy storage type luminous function so as to eliminate the phenomena of white holes and black holes at the tunnel entrance and exit sections; because tunnel mileage is longer, tunnel interlude is because tail gas pollution, characteristics such as ventilation inadequately, and the air quality is poor, and tunnel interlude needs continuous illumination just can guarantee safe driving, therefore the surface course of tunnel interlude mainly has luminous, provides anion, mould proof antibiotic function.
The water-based energy-storage luminous paint required by the construction method of the invention is firstly described in detail below.
The water-based energy storage luminous paint comprises the following components in parts by weight:
30-40 parts of aqueous polyurea resin, 10-15 parts of aqueous fluorocarbon resin, 10-15 parts of aqueous epoxy resin, 15-25 parts of energy storage luminescent material, 5-8 parts of flame retardant, 3-4 parts of dispersing agent, 1-2 parts of flatting agent, 5-8 parts of curing agent and 50-60 parts of water;
the energy storage luminescent material is an aqueous organic coating luminescent material and comprises the following components in parts by weight:
1 part of fluorine-containing acrylic acid monomer, 1 part of vinylidene chloride, 1 part of vinyl acetate, 1 part of glycidyl methacrylate, 6 parts of methyl methacrylate, 6 parts of butyl acrylate, 2 parts of isobornyl methacrylate, 1 part of AH-171 vinyl trimethoxy silane, 1 part of sodium allylsulfonate, 30 parts of propylene glycol methyl ether, 20 parts of n-butyl alcohol, 30 parts of nano rare earth aluminate and 2 parts of AIBN azodiisobutyronitrile.
Specifically, the preparation method of the energy storage luminescent material comprises the following steps:
the connecting pipelines of the ultrasonic reactor are in a sealed state, vacuumized and filled with nitrogen;
then adding solvent with the formula amount of 80% into an ultrasonic reactor, starting an ultrasonic stirring device, slowly adding nano rare earth aluminate into the solvent, and carrying out ultrasonic stirring for 30min;
uniformly stirring a monomer material, namely a fluorine-containing acrylic monomer, vinylidene chloride, vinyl acetate, glycidyl methacrylate, methyl methacrylate, butyl acrylate, isobornyl methacrylate, AH-171 vinyl trimethoxy silane and sodium allylsulfonate by a high-speed dispersing machine; the initiator AIBN azo diisobutyronitrile is dissolved by a solvent with the formula amount of 20 percent for standby;
raising the temperature in the reaction kettle to 80 ℃, and simultaneously dropwise adding a monomer and 80% of initiator solution for 3-4 hours;
after heat preservation for 1h, dropwise adding 10% of initiator solution, and then, after heat preservation for 1h, dropwise adding the rest 10% of initiator solution;
preserving heat for 3h, cooling, and filtering to obtain the aqueous organic coating luminescent material.
In the invention, the grain diameter of the nano rare earth aluminate is 40-80nm;
the fluorine-containing acrylic monomer is trifluoroethyl methacrylate.
The flame retardant is one or more of diatomite, talcum powder and kaolin;
the dispersant is BKY-163 of Pick chemical company; the leveling agent is BKY-052 of Pick chemical company; the curing agent is selected from curing agents 3390 of bayer company.
The preparation method of the water-based energy storage luminous paint provided by the invention comprises the following steps:
mixing water-based polyurea resin, water-based fluorocarbon resin, water-based epoxy resin, dispersing agent and a certain amount of water, and uniformly stirring;
adding the energy storage luminescent material, the flame retardant, the dispersing agent, the leveling agent, the defoaming agent, the curing agent and the balance of water, and uniformly stirring to prepare the tunnel water-based energy storage luminescent coating.
According to the water-based energy-storage luminous paint, the water-based polyurea resin is used as a main resin, and is matched with the water-based fluorocarbon resin and the water-based epoxy resin, so that the performances of weather resistance, water resistance and the like of the luminous paint are improved; the energy storage luminescent material is prepared by adopting nano rare earth aluminate through coating treatment, so that the stability of the luminescent material in a system can be improved, the luminous intensity can be improved, and the afterglow time can be prolonged; the system contains the water-based fluorocarbon resin, so that the system has a self-cleaning function, and the surface of the coating is not easy to fall off, thereby maintaining the sustainable usability of the energy storage luminescent material.
The water-based energy-storage luminescent paint and the performance thereof are described in detail by the following specific examples:
example 1
The water-based energy storage luminous paint comprises the following components in parts by weight:
30 parts of aqueous polyurea resin, 10 parts of aqueous fluorocarbon resin, 15 parts of aqueous epoxy resin, 15 parts of energy storage luminescent material, 5 parts of flame retardant, 4 parts of dispersing agent, 1 part of flatting agent, 1 part of defoaming agent, 8 parts of curing agent and 50 parts of water;
the energy storage luminescent material is an aqueous organic coating luminescent material and comprises the following components in parts by weight:
1 part of fluorine-containing acrylic acid monomer, 1 part of vinylidene chloride, 1 part of vinyl acetate, 1 part of glycidyl methacrylate, 6 parts of methyl methacrylate, 6 parts of butyl acrylate, 2 parts of isobornyl methacrylate, 1 part of AH-171 vinyl trimethoxy silane, 1 part of sodium allylsulfonate, 30 parts of propylene glycol methyl ether, 20 parts of n-butyl alcohol, 30 parts of nano rare earth aluminate and 2 parts of AIBN azodiisobutyronitrile.
Example 2
The water-based energy storage luminous paint comprises the following components in parts by weight:
40 parts of aqueous polyurea resin, 15 parts of aqueous fluorocarbon resin, 10 parts of aqueous epoxy resin, 25 parts of energy storage luminescent material, 8 parts of flame retardant, 3 parts of dispersing agent, 2 parts of flatting agent, 2 parts of defoaming agent, 5 parts of curing agent and 60 parts of water;
the energy storage luminescent material is an aqueous organic coating luminescent material and comprises the following components in parts by weight:
1 part of fluorine-containing acrylic acid monomer, 1 part of vinylidene chloride, 1 part of vinyl acetate, 1 part of glycidyl methacrylate, 6 parts of methyl methacrylate, 6 parts of butyl acrylate, 2 parts of isobornyl methacrylate, 1 part of AH-171 vinyl trimethoxy silane, 1 part of sodium allylsulfonate, 30 parts of propylene glycol methyl ether, 20 parts of n-butyl alcohol, 30 parts of nano rare earth aluminate and 2 parts of AIBN azodiisobutyronitrile.
Example 3
The water-based energy storage luminous paint comprises the following components in parts by weight:
35 parts of aqueous polyurea resin, 12 parts of aqueous fluorocarbon resin, 12 parts of aqueous epoxy resin, 20 parts of energy storage luminescent material, 6 parts of flame retardant, 3 parts of dispersing agent, 2 parts of flatting agent, 1 part of defoaming agent, 6 parts of curing agent and 55 parts of water;
the energy storage luminescent material is an aqueous organic coating luminescent material and comprises the following components in parts by weight:
1 part of fluorine-containing acrylic acid monomer, 1 part of vinylidene chloride, 1 part of vinyl acetate, 1 part of glycidyl methacrylate, 6 parts of methyl methacrylate, 6 parts of butyl acrylate, 2 parts of isobornyl methacrylate, 1 part of AH-171 vinyl trimethoxy silane, 1 part of sodium allylsulfonate, 30 parts of propylene glycol methyl ether, 20 parts of n-butyl alcohol, 30 parts of nano rare earth aluminate and 2 parts of AIBN azodiisobutyronitrile.
The aqueous energy storage luminescent coating of examples 1-3 was subjected to performance testing with the following results:
the multifunctional water-based paint required by the construction method of the invention is described in detail.
The multifunctional water-based paint comprises the following components in parts by weight:
35-38 parts of aqueous polyurea resin, 12-18 parts of aqueous fluorocarbon resin, 8-10 parts of aqueous vinyl chloride-vinyl acetate copolymer resin, 18-22 parts of functional material, 5-8 parts of flame retardant, 8-10 parts of auxiliary agent and 50-60 parts of water;
the functional material is an aqueous organic coating material and comprises the following components in parts by weight:
20 parts of nano rare earth aluminate, 10 parts of nano negative ion powder, 5 parts of nano titanium dioxide, 1 part of trifluoroethyl methacrylate, 1 part of vinylidene chloride, 1 part of vinyl acetate, 6 parts of ethyl methacrylate, 6 parts of butyl acrylate, 2 parts of isobornyl methacrylate, 1 part of AH-171 vinyl trimethoxy silane, 1 part of sodium allylsulfonate, 25 parts of propylene glycol methyl ether, 30 parts of isopropanol and 2 parts of dimethyl azodiisobutyrate, wherein the nano negative ion powder is nano silicate.
Specifically, the preparation method of the functional material comprises the following steps:
the connecting pipelines of the ultrasonic reactor are in a sealed state, vacuumized and filled with nitrogen;
then adding a solvent with the formula amount of 80% into an ultrasonic reactor, starting an ultrasonic stirring device, slowly adding nano rare earth aluminate, nano negative ion powder and nano titanium dioxide into the solvent, and carrying out ultrasonic stirring for 30min;
uniformly stirring monomer materials such as trifluoroethyl methacrylate, vinylidene chloride, vinyl acetate, ethyl methacrylate, butyl acrylate, isobornyl methacrylate, AH-171 vinyl trimethoxy silane and sodium allylsulfonate by a high-speed dispersing machine; the initiator azobisisobutyrate dimethyl ester is dissolved by a solvent with the formula amount of 20 percent for standby;
raising the temperature in the reaction kettle to 80 ℃, and simultaneously dropwise adding a monomer and 80% of initiator solution for 3-4 hours;
after heat preservation for 1h, dropwise adding 10% of initiator solution, and then, after heat preservation for 1h, dropwise adding the rest 10% of initiator solution;
preserving heat for 3h, cooling, filtering to obtain the functional material.
In the invention, the particle size of the nano rare earth aluminate is 40-80nm; the particle size of the nano negative ion powder is 20-100nm.
The flame retardant is one or more of diatomite, talcum powder and kaolin;
the auxiliary agent comprises a dispersing agent, a leveling agent and a curing agent, wherein the dispersing agent is selected from BKY-163 of Pick chemical company; the leveling agent is BKY-052 of Pick chemical company; the curing agent is selected from curing agents 3390 of bayer company.
The preparation method of the multifunctional water-based paint provided by the invention comprises the following steps:
step S1, mixing water-based polyurea resin, water-based fluorocarbon resin, water-based vinyl chloride-vinyl acetate copolymer resin and a certain amount of water, and uniformly stirring;
and S2, adding the functional material, the flame retardant, the auxiliary agent and the balance of water, and uniformly stirring to prepare the multifunctional water-based paint for the tunnel.
The multifunctional water-based paint adopts the water-based polyurea resin as the main resin, and is matched with the water-based fluorocarbon resin and the water-based vinyl chloride-vinyl acetate copolymer to improve the performances of weather resistance, water resistance and the like of the water-based paint; the functional coating material is prepared by coating nano rare earth aluminate, nano negative ion powder and nano titanium dioxide by adopting an organic material, and can improve the stability and dispersibility of the functional material in a system, thereby improving the luminous performance and the negative ion performance of the water-based paint. Therefore, the device is used in the middle section of the tunnel, so that the interior of the tunnel can be continuously illuminated, and the design illumination operation cost is saved; can increase the release amount of negative ions, improve the air environment in the tunnel, and improve the antibacterial and mildew-proof properties of the coating.
The multifunctional water-based paint provided by the invention is explained in detail below through specific embodiments.
Example 4
The multifunctional water-based paint comprises the following components in parts by weight:
35 parts of aqueous polyurea resin, 12 parts of aqueous fluorocarbon resin, 8 parts of aqueous vinyl chloride-vinyl acetate copolymer, 18 parts of functional material, 5 parts of flame retardant, 8 parts of auxiliary agent and 50 parts of water;
the functional material is an aqueous organic coating material and comprises the following components in parts by weight:
20 parts of nano rare earth aluminate, 10 parts of nano negative ion powder, 5 parts of nano titanium dioxide, 1 part of trifluoroethyl methacrylate, 1 part of vinylidene chloride, 1 part of vinyl acetate, 6 parts of ethyl methacrylate, 6 parts of butyl acrylate, 2 parts of isobornyl methacrylate, 1 part of AH-171 vinyl trimethoxysilane, 1 part of sodium allylsulfonate, 25 parts of propylene glycol methyl ether, 30 parts of isopropanol and 2 parts of dimethyl azodiisobutyrate.
Example 5
The multifunctional water-based paint comprises the following components in parts by weight:
38 parts of aqueous polyurea resin, 18 parts of aqueous fluorocarbon resin, 10 parts of aqueous vinyl chloride-vinyl acetate copolymer resin, 22 parts of functional material, 8 parts of flame retardant, 10 parts of auxiliary agent and 60 parts of water;
the functional material is an aqueous organic coating type luminescent material and comprises the following components in parts by weight:
20 parts of nano rare earth aluminate, 10 parts of nano negative ion powder, 5 parts of nano titanium dioxide, 1 part of trifluoroethyl methacrylate, 1 part of vinylidene chloride, 1 part of vinyl acetate, 6 parts of ethyl methacrylate, 6 parts of butyl acrylate, 2 parts of isobornyl methacrylate, 1 part of AH-171 vinyl trimethoxysilane, 1 part of sodium allylsulfonate, 25 parts of propylene glycol methyl ether, 30 parts of isopropanol and 2 parts of dimethyl azodiisobutyrate.
Example 6
The multifunctional water-based paint comprises the following components in parts by weight:
37 parts of aqueous polyurea resin, 15 parts of aqueous fluorocarbon resin, 10 parts of aqueous vinyl chloride-vinyl acetate copolymer, 20 parts of functional material, 6 parts of flame retardant, 9 parts of auxiliary agent and 55 parts of water;
the functional material is an aqueous organic coating type luminescent material and comprises the following components in parts by weight:
20 parts of nano rare earth aluminate, 10 parts of nano negative ion powder, 5 parts of nano titanium dioxide, 1 part of trifluoroethyl methacrylate, 1 part of vinylidene chloride, 1 part of vinyl acetate, 6 parts of ethyl methacrylate, 6 parts of butyl acrylate, 2 parts of isobornyl methacrylate, 1 part of AH-171 vinyl trimethoxysilane, 1 part of sodium allylsulfonate, 25 parts of propylene glycol methyl ether, 30 parts of isopropanol and 2 parts of dimethyl azodiisobutyrate
The multifunctional aqueous paints of examples 4 to 6 were subjected to performance tests, and the test results are as follows:
the method of constructing the tunnel fire-resistant coating of the present invention will be described in detail.
A construction method of a tunnel fireproof coating comprises the following steps:
s1, performing surface treatment on a tunnel lining to enable the surface to be flat and free of peeling and cracks;
s2, spraying a silane coupling agent on the surface of the substrate to serve as a substrate, wherein the thickness of the substrate is 25-30 mu m;
step S3, spraying non-expansion water-based fireproof paint on the surface of the substrate for multiple times to form a base layer with the thickness of 10-12 mm;
specifically, 106-2 type non-expansion water-based fireproof paint and water are mixed according to the proportion of 1 (0.7-0.8), and stirred into thick paste by a stirrer;
spraying from the waist to the top of the tunnel by using a spraying machine, wherein the thickness of the first spraying layer is 3-4mm, and spraying for the second time after the first spraying layer is dried completely to form a second spraying layer; this was cycled until the sprayed layer thickness reached 10-12mm.
Step S4, spraying a surface layer on the surface of the base layer, wherein the surface layer spraying process comprises the following steps:
s41, dividing a tunnel portal into tunnel entrance and exit sections within 60 meters, spraying water-based energy storage luminous paint on the tunnel entrance and exit sections, and comprising the following steps:
mixing the water-based energy-storage luminous paint with a certain amount of water, and stirring the mixture into thick paste by using a stirrer, wherein the water-based energy-storage luminous paint can adopt the technical schemes of the water-based energy-storage luminous paint embodiments 1-3;
spraying from the waist to the top of the tunnel by adopting a spraying machine to form a surface layer, wherein the thickness of the surface layer is 0.25-0.4mm; extending inwards from the tunnel portal, and gradually reducing the thickness of the coating by 0.03-0.05mm every 15 meters;
specifically, the water-based energy storage luminous paint spraying process of the tunnel inlet and outlet sections adopts a three-layer spraying forming process, and specifically comprises the following steps:
spraying priming paint, wherein the dosage of the priming paint is 0.4kg/m 2 -0.45kg/m 2 The thickness is 0.15-0.2mm;
spraying a first layer of finish paint with the dosage of 0.3kg/m 2 -0.35kg/m 2 The thickness is 0.08-0.12mm;
spraying a second layer of finish paint with the dosage of 0.1kg/m 2 -0.12kg/m 2 The thickness is 0.03-0.05mm.
Step S42, spraying multifunctional water paint on the middle section of the tunnel, comprising the following steps:
mixing the multifunctional water-based paint and a certain amount of water, and stirring into thick paste by using a stirrer, wherein the multifunctional water-based paint can adopt the technical schemes of the multifunctional water-based paint embodiments 4-6;
and spraying from the waist to the top of the tunnel by adopting a spraying machine to form a surface layer, wherein the thickness of the surface layer is 0.2-0.36mm.
Preferably, in the multifunctional water-based spraying process of the middle section of the tunnel, 1-2 parts of pigment is added into the paint, wherein the pigment is respectively blue and white, and the paint is adjusted to be different colors, so that the top of the middle section of the tunnel is sprayed into a blue sky and white cloud pattern, and the waist of the middle section of the tunnel is sprayed into blue. The method specifically adopts a three-layer spraying process and comprises the following steps:
spraying blue primer with the dosage of 0.4kg/m 2 -0.45kg/m 2 The thickness is 0.15-0.2mm;
spray coating white cloudPaint with the dosage of 0.3kg/m 2 -0.35kg/m 2 The thickness is 0.03-0.15mm;
spraying colorless finishing paint with the dosage of 0.1kg/m 2 -0.12kg/m 2 The thickness is 0.03-0.05mm.
Through the spraying process, the dynamic landscape is designed in the middle section of the tunnel, so that psychological depression and tension emotion formed by a driver in a long tunnel can be relieved, and the safe driving coefficient is further improved; wherein the spraying area of the white cloud paint accounts for 10-30% of the spraying area of the blue primer.
1. According to the construction method of the tunnel fireproof coating, the water-based energy-storage luminous coating is used at the tunnel entrance and exit section, and the light emitted by the sunlight irradiates, so that the light of the tunnel entrance and exit section is adapted to the external light, the brightness difference between the inside and outside of the tunnel entrance is reduced, the phenomena of black holes and white holes in the tunnel are eliminated, and the driving safety in the tunnel is improved; meanwhile, the surface layer sprayed by the water-based energy storage luminous paint extends inwards from the tunnel portal, the thickness of the coating is gradually reduced by 0.03-0.05mm every 15 meters, so that the luminous brightness of the coating is gradually weakened, and then the coating is connected with the luminous brightness of the middle section of the tunnel, the light brightness difference in the tunnel is reduced, and the comfort of the luminous environment is comprehensively improved; the multifunctional water-based paint is used in the middle section of the tunnel, has the functions of emitting light and providing anions, can continuously illuminate the tunnel, saves the design illumination operation cost, contains nano anions and nano titanium dioxide, can effectively purify the air in the tunnel, ensures that the coating has the characteristics of resisting bacteria and mildew, and reduces the operation cost of an exhaust system.
2. According to the construction method of the tunnel fireproof coating, firstly, the fireproof coating with the thickness of 10-12mm is sprayed on the inner wall of the tunnel, then the surface of the fireproof coating is sprayed with the surface layer with the thickness of 0.2-0.4mm, and the surface layer material also has fireproof performance, so that the fireproof time of the tunnel coating can reach 150-180min.
The embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims (6)

1. The construction method of the tunnel fireproof coating is characterized by comprising the following steps of:
s1, performing surface treatment on a tunnel lining to enable the surface to be flat and free of peeling and cracks;
s2, spraying a silane coupling agent on the surface of the substrate to serve as a substrate, wherein the thickness of the substrate is 25-30 mu m;
step S3, spraying non-expansion water-based fireproof paint on the surface of the substrate for multiple times to form a base layer with the thickness of 10-12 mm;
step S4, spraying a surface layer on the surface of the base layer, wherein the surface layer spraying process comprises the following steps:
s41, dividing a tunnel portal into tunnel entrance and exit sections within 60 meters, spraying water-based energy storage luminous paint on the tunnel entrance and exit sections, and comprising the following steps:
mixing the water-based energy-storage luminous paint with a certain amount of water, and stirring the mixture into thick paste by using a stirrer, wherein the water-based energy-storage luminous paint comprises the following components in parts by weight:
30-40 parts of aqueous polyurea resin, 10-15 parts of aqueous fluorocarbon resin, 10-15 parts of aqueous epoxy resin, 15-25 parts of energy storage luminescent material, 5-8 parts of flame retardant, 3-4 parts of dispersing agent, 1-2 parts of flatting agent, 5-8 parts of curing agent and 50-60 parts of water;
the energy storage luminescent material is an aqueous organic coating luminescent material and comprises the following components in parts by weight:
1 part of fluorine-containing acrylic acid monomer, 1 part of vinylidene chloride, 1 part of vinyl acetate, 1 part of glycidyl methacrylate, 6 parts of methyl methacrylate, 6 parts of butyl acrylate, 2 parts of isobornyl methacrylate, 1 part of AH-171 vinyl trimethoxy silane, 1 part of sodium allylsulfonate, 30 parts of propylene glycol methyl ether, 20 parts of n-butyl alcohol, 30 parts of nano rare earth aluminate and 2 parts of AIBN azodiisobutyronitrile;
spraying from the waist to the top of the tunnel by adopting a spraying machine to form a surface layer, wherein the thickness of the surface layer is 0.25-0.4mm; extending inwards from the tunnel portal, and gradually reducing the thickness of the coating by 0.03-0.05mm every 15 meters;
step S42, spraying multifunctional water paint on the middle section of the tunnel, comprising the following steps:
mixing the multifunctional water-based paint with a certain amount of water, and stirring the mixture into thick paste by using a stirrer, wherein the multifunctional water-based paint comprises the following components in parts by weight:
35-38 parts of aqueous polyurea resin, 12-18 parts of aqueous fluorocarbon resin, 8-10 parts of aqueous vinyl chloride-vinyl acetate copolymer resin, 18-22 parts of functional material, 5-8 parts of flame retardant, 8-10 parts of auxiliary agent and 50-60 parts of water;
the functional material is an aqueous organic coating material and comprises the following components in parts by weight:
20 parts of nano rare earth aluminate, 10 parts of nano negative ion powder, 5 parts of nano titanium dioxide, 1 part of trifluoroethyl methacrylate, 1 part of vinylidene chloride, 1 part of vinyl acetate, 6 parts of ethyl methacrylate, 6 parts of butyl acrylate, 2 parts of isobornyl methacrylate, 1 part of AH-171 vinyl trimethoxy silane, 1 part of sodium allylsulfonate, 25 parts of propylene glycol methyl ether, 30 parts of isopropanol and 2 parts of dimethyl azodiisobutyrate, wherein the nano negative ion powder is nano silicate;
and spraying from the waist to the top of the tunnel by adopting a spraying machine to form a surface layer, wherein the thickness of the surface layer is 0.2-0.36mm.
2. The construction method of the tunnel fireproof coating according to claim 1, wherein the water-based energy storage luminous paint spraying process of the tunnel inlet and outlet section adopts a three-layer spraying forming process, and specifically comprises the following steps:
spraying primer with the dosage of 0.4kg/m 2 -0.45kg/m 2 The thickness is 0.15-0.2mm;
spraying a first layer of finish paint with the dosage of 0.3kg/m 2 -0.35kg/m 2 The thickness is 0.08-0.12mm;
spraying a second layer of finish paint with the dosage of 0.1kg/m 2 -0.12kg/m 2 The thickness is 0.03-0.05mm.
3. The method for constructing a fireproof coating for tunnels according to claim 1, wherein the multifunctional water-based paint in step S42 further comprises 1-2 parts of pigment, wherein the pigment is blue or white, the top of the middle section of the tunnel is sprayed with a blue sky white pattern, and the waist of the middle section of the tunnel is sprayed with blue.
4. The method for constructing a fireproof coating for a tunnel according to claim 3, wherein the spraying process of the multifunctional water-based paint for the middle section of the tunnel adopts a three-layer spraying process, and specifically comprises the following steps:
spraying blue primer with the dosage of 0.4kg/m 2 -0.45kg/m 2 The thickness is 0.15-0.2mm;
spraying white cloud paint with the dosage of 0.3kg/m 2 -0.35kg/m 2 The thickness is 0.03-0.15mm;
spraying colorless finishing paint with the dosage of 0.1kg/m 2 -0.12kg/m 2 The thickness is 0.03-0.05mm.
5. The method of constructing a tunnel fire protection coating according to claim 1, wherein in step S3, the base layer spraying process comprises the steps of:
mixing the non-expansion water-based fireproof paint and water according to the proportion of 1 (0.7-0.8), and stirring into thick paste by using a stirrer;
spraying from the waist to the top of the tunnel by using a spraying machine, wherein the thickness of the first spraying layer is 3-4mm, and spraying for the second time after the first spraying layer is dried completely to form a second spraying layer; this was cycled until the sprayed layer thickness reached 10-12mm.
6. The method of constructing a tunnel fire-resistant coating according to claim 5, wherein the non-intumescent aqueous fire-resistant coating is a type 106-2 non-intumescent aqueous fire-resistant coating.
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