CN113217077A - Construction method of tunnel fireproof coating - Google Patents

Construction method of tunnel fireproof coating Download PDF

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Publication number
CN113217077A
CN113217077A CN202110493117.8A CN202110493117A CN113217077A CN 113217077 A CN113217077 A CN 113217077A CN 202110493117 A CN202110493117 A CN 202110493117A CN 113217077 A CN113217077 A CN 113217077A
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tunnel
spraying
water
paint
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CN113217077B (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)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Plant Pathology (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 lining body as a substrate; spraying non-expansive 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 entrance into and out 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 entrance, and gradually reducing the thickness of the paint by 0.03-0.05mm every 15 meters; spraying multifunctional water paint with thickness of 0.2-0.36mm onto 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 60 meters of a tunnel opening, so that the difference of the internal and external brightness of the tunnel opening is reduced, and the phenomena of black holes and white holes in the tunnel are eliminated; the tunnel middle section coating has the functions of light emitting and negative ions, so that the interior of the tunnel can be continuously illuminated, the air in the tunnel can be effectively purified, and the operation 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
With the rapid development of the traffic road construction in China, the road tunnel construction is prosperous, a large amount of tunnel construction brings convenience to people in traffic trip, and meanwhile, a lot of management problems are exposed in the operation stage. Firstly, because the illumination needs to be carried out for 24 hours continuously in the dark environment of the tunnel, the illumination power consumption is high in operation management, the cost is high, so that a plurality of units cannot bear the operation and maintenance cost of the tunnel, and the designed illumination lamps are often not completely started in the actual operation management of the highway tunnel in many places in China, so that the road illumination brightness of the running operation of the highway tunnel is insufficient, and the difficulty is brought to safe running; secondly, the phenomena of 'black holes' and 'white holes' are easy to occur in the entrance section and the exit section of the tunnel due to the change of light intensity, and hidden dangers are caused to safe driving of drivers; thirdly, with the increase of the mileage of the tunnel, the content of tail gas in the tunnel is increased, air in the tunnel needs to be replaced through an exhaust system, the operation cost of the exhaust system is high, and the exhaust effect is poor.
In view of the above, the present invention provides a new technology to solve the above technical problems.
Disclosure of Invention
The technical problem to be solved by the invention is 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, an outlet section and a middle section of a tunnel, wherein the luminous intensity of the coating changes according to the intensity of light within the range of 60 meters at a tunnel opening so as to reduce the difference of the internal and external brightness of the tunnel and eliminate the phenomena of black holes and white holes in the tunnel; the tunnel middle section coating has the functions of light emitting and negative ions, so that the interior of 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:
step S1, the surface of the tunnel lining body is treated to ensure that the surface is flat and has no peeling and cracks;
step S2, spraying a silane coupling agent on the surface of the lining body as a substrate, wherein the thickness of the silane coupling agent is 25-30 μm;
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:
step S41, dividing the tunnel entrance into tunnel entrance and exit sections within 60 meters, and spraying water-based energy-storage luminous paint on the tunnel entrance and exit sections, 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 water-based polyurea resin, 10-15 parts of water-based fluorocarbon resin, 10-15 parts of water-based epoxy resin, 15-25 parts of energy storage luminescent material, 5-8 parts of flame retardant, 3-4 parts of dispersant, 1-2 parts of flatting agent, 5-8 parts of curing agent and 50-60 parts of water;
the energy storage luminescent material is a water-based organic coating luminescent material and comprises the following components in percentage by weight:
1 part of fluorine-containing acrylic 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 azobisisobutyronitrile;
spraying from the waist part to the top part of the tunnel by using a spraying machine to form a surface layer, wherein the thickness of the surface layer is 0.25-0.4 mm; extending inwards from the tunnel entrance, and gradually reducing the thickness of the coating by 0.03-0.05mm every 15 meters;
step S42, spraying the multifunctional water-based paint on the middle section of the tunnel, which comprises 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 water-based polyurea resin, 12-18 parts of water-based fluorocarbon resin, 8-10 parts of water-based vinyl chloride-vinyl acetate copolymer, 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 a water-based organic coating material and comprises the following components in percentage 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 part to the top part of the tunnel by using a spraying machine to form a surface layer, wherein the thickness of the surface layer is 0.2-0.36 mm.
Further, the spraying process of the water-based energy-storage luminous paint at the inlet and outlet section of the tunnel adopts a three-layer spraying forming process, and specifically comprises the following steps:
spraying primer with the dosage of 0.4kg/m2-0.45kg/m2The thickness is 0.15-0.2 mm;
spraying a first layer of finish paint with the dosage of 0.3kg/m2-0.35kg/m2The thickness is 0.08-0.12 mm;
spraying a second layer of finish paint with the dosage of 0.1kg/m2-0.12kg/m2The thickness is 0.03-0.05 mm.
Further, the multifunctional water-based paint of step S42 further includes 1-2 parts of pigment, the pigment is blue or white, the top of the middle section of the tunnel is sprayed with a blue sky white cloud pattern, and the waist of the middle section of the tunnel is sprayed with blue.
Further, the multifunctional water-based paint spraying process 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/m2-0.45kg/m2The thickness is 0.15-0.2 mm;
spraying white cloud paint with the dosage of 0.3kg/m2-0.35kg/m2The thickness is 0.03-0.15 mm;
spraying colorless finish paint with the dosage of 0.1kg/m2-0.12kg/m2The thickness is 0.03-0.05 mm.
Further, in step S3, the base layer spraying process includes the following steps:
mixing the non-expansive water-based fireproof coating and water according to the proportion of 1 (0.7-0.8), and stirring the mixture into thick paste by a stirrer;
spraying from the waist part to the top part 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 is repeated until the thickness of the sprayed layer reaches 10-12 mm.
Further, the non-intumescent water-based fire retardant coating is a 106-2 type non-intumescent water-based fire retardant coating.
The construction method of the tunnel fireproof coating provided by the invention has the beneficial effects that:
according to the construction method of the tunnel fireproof coating, the water-based energy-storage luminous coating is used at the entrance and exit sections of the tunnel and emits light under the irradiation of sunlight, so that the light at the entrance and exit sections of the tunnel is adapted to the external light, the difference of the internal and external brightness of the tunnel portal 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, a surface layer sprayed by the water-based energy storage luminous paint extends inwards from the tunnel entrance, the thickness of the coating is gradually reduced by 0.03-0.05mm every 15 meters, so that the brightness of the coating is gradually reduced, the coating is further connected with the brightness of the middle section of the tunnel, the light brightness difference in the tunnel is reduced, and the comfort of the light environment is comprehensively improved; the multifunctional water-based paint used in the middle section of the tunnel has the functions of emitting light and providing negative ions, so that the interior of the tunnel can be continuously illuminated, the design illumination operation cost is saved, and the water-based paint contains nanometer negative ion components and nanometer titanium dioxide, so that the air in the tunnel can be effectively purified, the coating has the characteristics of antibiosis and mould prevention, and the operation cost of an exhaust system is reduced.
Secondly, the construction method of the tunnel fireproof coating provided by the invention comprises the steps of firstly spraying a layer of 10-12mm fireproof coating on the inner wall of the tunnel, then spraying a layer of 0.2-0.4mm surface layer on the surface of the fireproof coating, wherein the surface layer material also has fireproof performance, so that the fireproof time of the tunnel coating can reach 150-180 min.
Detailed Description
The following description of the present invention is provided to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention and to make the above objects, features and advantages of the present invention more comprehensible.
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual values, and between the individual values may be combined with each other to yield one or more new ranges of values, which ranges of values should be considered as specifically disclosed herein.
The construction method of the tunnel fireproof coating uses different coatings as surface layers at the entrance and exit sections and the middle section of the tunnel respectively, wherein the surface layer material of the entrance and exit sections of the tunnel mainly has an energy storage type light-emitting function so as to eliminate white holes and black holes at the hole openings; because the tunnel mileage is longer, the tunnel interlude is because characteristics such as tail gas pollution, not ventilate, and air quality is poor, and the tunnel interlude need last illumination just can guarantee safe driving, therefore the surface course of tunnel interlude mainly has luminous, provide anion, mould proof antibiotic function.
The following first describes the water-based energy-storage luminescent coating required by the construction method of the invention in detail.
A water-based energy storage luminous paint comprises the following components in parts by weight:
30-40 parts of water-based polyurea resin, 10-15 parts of water-based fluorocarbon resin, 10-15 parts of water-based epoxy resin, 15-25 parts of energy storage luminescent material, 5-8 parts of flame retardant, 3-4 parts of dispersant, 1-2 parts of flatting agent, 5-8 parts of curing agent and 50-60 parts of water;
the energy storage luminescent material is a water-based organic coating luminescent material and comprises the following components in percentage by weight:
1 part of fluorine-containing acrylic 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 allyl sulfonate, 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 azobisisobutyronitrile.
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, and the ultrasonic reactor is vacuumized and filled with nitrogen;
then adding a solvent with the formula amount of 80% into the ultrasonic reactor, starting an ultrasonic stirring device, slowly adding the nano rare earth aluminate into the solvent, and ultrasonically stirring for 30 min;
uniformly stirring a monomer material including 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 using a high-speed disperser; dissolving an initiator AIBN azodiisobutyronitrile in a solvent with the formula amount of 20% for later use;
raising the temperature in the reaction kettle to 80 ℃, simultaneously dropwise adding the monomer and 80% of initiator solution, and finishing dropping for 3-4 h;
after heat preservation is carried out for 1h, 10 percent of initiator solution is dripped, and then heat preservation is carried out for 1h, and the rest 10 percent of initiator solution is dripped;
preserving the temperature for 3h, cooling and filtering to obtain the water-based organic coating type luminescent material.
In the invention, the grain size of the nano rare earth aluminate is 40-80 nm;
the fluorine-containing acrylic monomer is trifluoroethyl methacrylate.
The flame retardant is one or more of diatomite, talcum powder and kaolin;
the dispersant is selected from BKY-163 from Picker chemical company; the leveling agent is selected from BKY-052 of Picker chemical company; the curing agent is selected from 3390, Bayer AG.
The invention provides a water-based energy storage luminescent coating, which is prepared by the following steps:
mixing the aqueous polyurea resin, the aqueous fluorocarbon resin, the aqueous epoxy resin, the dispersant and a certain amount of water, and uniformly stirring;
and adding the energy storage luminescent material, the flame retardant, the dispersing agent, the flatting agent, the defoaming agent, the curing agent and the balance of water, and uniformly stirring to prepare the water-based energy storage luminescent paint for the tunnel.
The water-based energy storage luminescent coating adopts water-based polyurea resin as main resin, and is matched with water-based fluorocarbon resin and water-based epoxy resin, so that the performances of weather resistance, waterproofness and the like of the luminescent coating 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 aqueous fluorocarbon resin, so that the system has a self-cleaning function, and the surface of the coating is not easy to fall ash, thereby maintaining the sustainable usability of the energy storage luminescent material.
The following detailed description of the water-based energy storage luminescent coating and the properties thereof are provided by specific examples:
example 1
A water-based energy storage luminous paint comprises the following components in parts by weight:
30 parts of water-based polyurea resin, 10 parts of water-based fluorocarbon resin, 15 parts of water-based 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 a water-based organic coating luminescent material and comprises the following components in percentage by weight:
1 part of fluorine-containing acrylic 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 allyl sulfonate, 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 azobisisobutyronitrile.
Example 2
A water-based energy storage luminous paint comprises the following components in parts by weight:
40 parts of water-based polyurea resin, 15 parts of water-based fluorocarbon resin, 10 parts of water-based epoxy resin, 25 parts of energy storage luminescent material, 8 parts of flame retardant, 3 parts of dispersant, 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 a water-based organic coating luminescent material and comprises the following components in percentage by weight:
1 part of fluorine-containing acrylic 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 allyl sulfonate, 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 azobisisobutyronitrile.
Example 3
A water-based energy storage luminous paint comprises the following components in parts by weight:
35 parts of water-based polyurea resin, 12 parts of water-based fluorocarbon resin, 12 parts of water-based epoxy resin, 20 parts of energy storage luminescent material, 6 parts of flame retardant, 3 parts of dispersant, 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 a water-based organic coating luminescent material and comprises the following components in percentage by weight:
1 part of fluorine-containing acrylic 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 allyl sulfonate, 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 azobisisobutyronitrile.
The aqueous energy storage luminescent coatings of examples 1-3 were subjected to performance tests, the test results being as follows:
Figure BDA0003053199290000071
then, the multifunctional water-based paint required by the construction method of the invention is elaborated.
The multifunctional water-based paint comprises the following components in parts by weight:
35-38 parts of water-based polyurea resin, 12-18 parts of water-based fluorocarbon resin, 8-10 parts of water-based vinyl chloride-vinyl acetate copolymer, 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 a water-based organic coating material and comprises the following components in percentage 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, and the ultrasonic reactor is vacuumized and filled with nitrogen;
then adding a solvent with the formula amount of 80% into the ultrasonic reactor, starting an ultrasonic stirring device, slowly adding the nano rare earth aluminate, the nano anion powder and the nano titanium dioxide into the solvent, and ultrasonically stirring for 30 min;
uniformly stirring monomer materials of trifluoroethyl methacrylate, vinylidene chloride, vinyl acetate, ethyl methacrylate, butyl acrylate, isobornyl methacrylate, AH-171 vinyl trimethoxy silane and sodium allylsulfonate by using a high-speed dispersion machine; dissolving an initiator of dimethyl azodiisobutyrate by using a solvent with the formula amount of 20% for standby;
raising the temperature in the reaction kettle to 80 ℃, simultaneously dropwise adding the monomer and 80% of initiator solution, and finishing dropping for 3-4 h;
after heat preservation is carried out for 1h, 10 percent of initiator solution is dripped, and then heat preservation is carried out for 1h, and the rest 10 percent of initiator solution is dripped;
preserving the temperature for 3h, cooling and filtering to obtain the functional material.
In the invention, the particle size of the nano rare earth aluminate is 40-80 nm; the particle size of the nanometer anion powder is 20-100 nm.
The flame retardant is one or more of diatomite, talcum powder and kaolin;
the auxiliary agent comprises a dispersing agent, a flatting agent and a curing agent, wherein the dispersing agent is selected from BKY-163 of Pickering chemical company; the leveling agent is selected from BKY-052 of Picker chemical company; the curing agent is selected from 3390, Bayer AG.
The preparation method of the multifunctional water-based paint provided by the invention comprises the following steps:
step S1, mixing the water-based polyurea resin, the water-based fluorocarbon resin, the water-based vinyl chloride-vinyl acetate copolymer resin and a certain amount of water, and uniformly stirring;
and step 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 disclosed by the invention 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 resin, so that the performances of weather resistance, waterproofness and the like of the water-based paint are improved; the functional material is prepared by adopting an aqueous organic coating material and coating the nano rare earth aluminate, the nano anion powder and the nano titanium dioxide by adopting an organic material, so that the stability and the dispersibility of the functional material in a system can be improved, and the luminous performance and the anion performance of the aqueous coating are improved. Therefore, the LED lamp 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; the release amount of negative ions can be improved, the air environment in the tunnel is improved, and the antibacterial and mildewproof performance of the coating can be improved.
The multifunctional water-based paint provided by the invention is explained in detail by specific embodiments.
Example 4
The multifunctional water-based paint comprises the following components in parts by weight:
35 parts of water-based polyurea resin, 12 parts of water-based fluorocarbon resin, 8 parts of water-based 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 a water-based organic coating material and comprises the following components in percentage 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 vinyltrimethoxysilane, 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 water-based polyurea resin, 18 parts of water-based fluorocarbon resin, 10 parts of water-based vinyl chloride-vinyl acetate copolymer, 22 parts of functional material, 8 parts of flame retardant, 10 parts of auxiliary agent and 60 parts of water;
the functional material is a water-based organic coating type luminescent material and comprises the following components in percentage 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 vinyltrimethoxysilane, 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 water-based polyurea resin, 15 parts of water-based fluorocarbon resin, 10 parts of water-based 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 a water-based organic coating type luminescent material and comprises the following components in percentage 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 vinyltrimethoxysilane, 1 part of sodium allylsulfonate, 25 parts of propylene glycol methyl ether, 30 parts of isopropanol and 2 parts of dimethyl azodiisobutyrate
The multifunctional water-based paint of the examples 4 to 6 is subjected to performance tests, and the test results are as follows:
Figure BDA0003053199290000101
Figure BDA0003053199290000111
the construction method of the tunnel fire-retardant coating of the present invention will be explained in detail.
A construction method of a tunnel fireproof coating comprises the following steps:
step S1, the surface of the tunnel lining body is treated to ensure that the surface is flat and has no peeling and cracks;
step S2, spraying a silane coupling agent on the surface of the lining body as a substrate, wherein the thickness of the silane coupling agent is 25-30 μm;
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;
concretely, 106-2 type non-expansive water-based fireproof coating and water are mixed according to the proportion of 1 (0.7-0.8), and stirred into thick slurry by a stirrer;
spraying from the waist part to the top part 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 is repeated until the thickness of the sprayed layer reaches 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:
step S41, dividing the tunnel entrance into tunnel entrance and exit sections within 60 meters, and spraying water-based energy-storage luminous paint on the tunnel entrance and exit sections, comprising the following steps:
mixing the water-based energy storage luminescent coating with a certain amount of water, and stirring the mixture into thick paste by using a stirrer, wherein the water-based energy storage luminescent coating can adopt the technical scheme of the water-based energy storage luminescent coating in the embodiment 1-3;
spraying from the waist part to the top part of the tunnel by using a spraying machine to form a surface layer, wherein the thickness of the surface layer is 0.25-0.4 mm; extending inwards from the tunnel entrance, and gradually reducing the thickness of the coating by 0.03-0.05mm every 15 meters;
specifically, the spraying process of the water-based energy-storage luminous paint at the entrance and exit section of the tunnel adopts a three-layer spraying forming process, and specifically comprises the following steps:
spraying primer, wherein the using amount of the primer is 0.4kg/m2-0.45kg/m2The thickness is 0.15-0.2 mm;
spraying a first layer of finish paint with the dosage of 0.3kg/m2-0.35kg/m2The thickness is 0.08-0.12 mm;
spraying a second layer of finish paint with the dosage of 0.1kg/m2-0.12kg/m2The thickness is 0.03-0.05 mm.
Step S42, spraying the multifunctional water-based paint on the middle section of the tunnel, which comprises the following steps:
mixing the multifunctional water-based paint with a certain amount of water, and stirring the mixture into thick paste by a stirrer, wherein the multifunctional water-based paint can adopt the technical scheme of the embodiment 4-6 of the multifunctional water-based paint;
and spraying from the waist part to the top part of the tunnel by using a spraying machine to form a surface layer, wherein the thickness of the surface layer is 0.2-0.36 mm.
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, the pigment is blue and white respectively, the paint with different colors is prepared, so that the top of the middle section of the tunnel is sprayed with a blue sky and white cloud pattern, and the waist of the middle section of the tunnel is sprayed with blue. Specifically, a three-layer spraying process is adopted, and comprises the following steps:
spraying blue primer with the dosage of 0.4kg/m2-0.45kg/m2The thickness is 0.15-0.2 mm;
spraying white cloud paint with the dosage of 0.3kg/m2-0.35kg/m2The thickness is 0.03-0.15 mm;
spraying colorless finish paint with the dosage of 0.1kg/m2-0.12kg/m2The thickness is 0.03-0.05 mm.
By the spraying process, the middle section of the tunnel is designed to present a dynamic landscape, so that the psychological depression and tension formed by a driver in the 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.
According to the construction method of the tunnel fireproof coating, the water-based energy-storage luminous coating is used at the entrance and exit sections of the tunnel and emits light under the irradiation of sunlight, so that the light at the entrance and exit sections of the tunnel is adapted to the external light, the difference of the internal and external brightness of the tunnel portal 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, a surface layer sprayed by the water-based energy storage luminous paint extends inwards from the tunnel entrance, the thickness of the coating is gradually reduced by 0.03-0.05mm every 15 meters, so that the brightness of the coating is gradually reduced, the coating is further connected with the brightness of the middle section of the tunnel, the light brightness difference in the tunnel is reduced, and the comfort of the light environment is comprehensively improved; the multifunctional water-based paint used in the middle section of the tunnel has the functions of emitting light and providing negative ions, so that the interior of the tunnel can be continuously illuminated, the design illumination operation cost is saved, and the water-based paint contains nanometer negative ion components and nanometer titanium dioxide, so that the air in the tunnel can be effectively purified, the coating has the characteristics of antibiosis and mould prevention, and the operation cost of an exhaust system is reduced.
Secondly, the construction method of the tunnel fireproof coating provided by the invention comprises the steps of firstly spraying a layer of 10-12mm fireproof coating on the inner wall of the tunnel, then spraying a layer of 0.2-0.4mm surface layer on the surface of the fireproof coating, wherein the surface layer material also has fireproof performance, so that the fireproof time of the tunnel coating can reach 150-180 min.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the described embodiments. Various changes, modifications, substitutions and alterations to these embodiments will occur to those skilled in the art without departing from the spirit and scope of the present invention.

Claims (6)

1. A construction method of a tunnel fireproof coating is characterized by comprising the following steps:
step S1, the surface of the tunnel lining body is treated to ensure that the surface is flat and has no peeling and cracks;
step S2, spraying a silane coupling agent on the surface of the lining body as a substrate, wherein the thickness of the silane coupling agent is 25-30 μm;
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:
step S41, dividing the tunnel entrance into tunnel entrance and exit sections within 60 meters, and spraying water-based energy-storage luminous paint on the tunnel entrance and exit sections, 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 water-based polyurea resin, 10-15 parts of water-based fluorocarbon resin, 10-15 parts of water-based epoxy resin, 15-25 parts of energy storage luminescent material, 5-8 parts of flame retardant, 3-4 parts of dispersant, 1-2 parts of flatting agent, 5-8 parts of curing agent and 50-60 parts of water;
the energy storage luminescent material is a water-based organic coating luminescent material and comprises the following components in percentage by weight:
1 part of fluorine-containing acrylic 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 azobisisobutyronitrile;
spraying from the waist part to the top part of the tunnel by using a spraying machine to form a surface layer, wherein the thickness of the surface layer is 0.25-0.4 mm; extending inwards from the tunnel entrance, and gradually reducing the thickness of the coating by 0.03-0.05mm every 15 meters;
step S42, spraying the multifunctional water-based paint on the middle section of the tunnel, which comprises 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 water-based polyurea resin, 12-18 parts of water-based fluorocarbon resin, 8-10 parts of water-based vinyl chloride-vinyl acetate copolymer, 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 a water-based organic coating material and comprises the following components in percentage 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 part to the top part of the tunnel by using a spraying machine to form a surface layer, wherein the thickness of the surface layer is 0.2-0.36 mm.
2. The construction method of the tunnel fireproof coating according to claim 1, wherein the spraying process of the water-based energy-storage luminous coating at the entrance and exit section of the tunnel adopts a three-layer spraying forming process, and specifically comprises the following steps:
spraying primer with the dosage of 0.4kg/m2-0.45kg/m2The thickness is 0.15-0.2 mm;
spraying a first layer of finish paint with the dosage of 0.3kg/m2-0.35kg/m2The thickness is 0.08-0.12 mm;
spraying a second layer of finish paint with the dosage of 0.1kg/m2-0.12kg/m2The thickness is 0.03-0.05 mm.
3. The method of claim 1, wherein the multifunctional water-based paint of step S42 further comprises 1-2 parts of pigment, the pigment is blue or white, the top of the middle section of the tunnel is sprayed with a blue-sky-white-cloud pattern, and the waist of the middle section of the tunnel is sprayed with blue.
4. The construction method of the tunnel fireproof coating according to claim 3, wherein the multifunctional water-based paint spraying process of 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/m2-0.45kg/m2The thickness is 0.15-0.2 mm;
spraying white cloud paint with the dosage of 0.3kg/m2-0.35kg/m2The thickness is 0.03-0.15 mm;
spraying colorless finish paint with the dosage of 0.1kg/m2-0.12kg/m2The thickness is 0.03-0.05 mm.
5. The method of claim 1, wherein the step S3, the base layer spraying process comprises the following steps:
mixing the non-expansive water-based fireproof coating and water according to the proportion of 1 (0.7-0.8), and stirring the mixture into thick paste by a stirrer;
spraying from the waist part to the top part 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 is repeated until the thickness of the sprayed layer reaches 10-12 mm.
6. The method of constructing a fire-retardant tunnel coating according to claim 5, wherein said non-intumescent aqueous fire-retardant paint is a type 106-2 non-intumescent aqueous fire-retardant paint.
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