CN116284957A - Flame-retardant polystyrene board material, preparation method thereof and application thereof in tunnel thermal insulation engineering - Google Patents
Flame-retardant polystyrene board material, preparation method thereof and application thereof in tunnel thermal insulation engineering Download PDFInfo
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- CN116284957A CN116284957A CN202310061175.2A CN202310061175A CN116284957A CN 116284957 A CN116284957 A CN 116284957A CN 202310061175 A CN202310061175 A CN 202310061175A CN 116284957 A CN116284957 A CN 116284957A
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- 239000004793 Polystyrene Substances 0.000 title claims abstract description 87
- 229920002223 polystyrene Polymers 0.000 title claims abstract description 87
- 239000003063 flame retardant Substances 0.000 title claims abstract description 56
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 239000000463 material Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title abstract description 16
- 238000009413 insulation Methods 0.000 title description 9
- 239000002245 particle Substances 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 44
- 229920005989 resin Polymers 0.000 claims abstract description 38
- 239000011347 resin Substances 0.000 claims abstract description 38
- 239000011378 shotcrete Substances 0.000 claims abstract description 32
- 238000004321 preservation Methods 0.000 claims abstract description 26
- 239000000839 emulsion Substances 0.000 claims abstract description 23
- 239000004744 fabric Substances 0.000 claims abstract description 17
- 239000004567 concrete Substances 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 13
- 239000011256 inorganic filler Substances 0.000 claims abstract description 13
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 13
- 239000005871 repellent Substances 0.000 claims abstract description 13
- 230000002940 repellent Effects 0.000 claims abstract description 13
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 239000011248 coating agent Substances 0.000 claims description 81
- 238000000576 coating method Methods 0.000 claims description 37
- 238000001035 drying Methods 0.000 claims description 35
- 239000004794 expanded polystyrene Substances 0.000 claims description 26
- 238000002156 mixing Methods 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000004111 Potassium silicate Substances 0.000 claims description 8
- 239000002390 adhesive tape Substances 0.000 claims description 8
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 8
- 235000019353 potassium silicate Nutrition 0.000 claims description 8
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 8
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- 239000010881 fly ash Substances 0.000 claims description 6
- 229920001568 phenolic resin Polymers 0.000 claims description 6
- 239000005011 phenolic resin Substances 0.000 claims description 6
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 claims description 5
- 229910052912 lithium silicate Inorganic materials 0.000 claims description 5
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 5
- 239000000347 magnesium hydroxide Substances 0.000 claims description 5
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 5
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 4
- 239000012784 inorganic fiber Substances 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 239000004831 Hot glue Substances 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- NJVOHKFLBKQLIZ-UHFFFAOYSA-N (2-ethenylphenyl) prop-2-enoate Chemical compound C=CC(=O)OC1=CC=CC=C1C=C NJVOHKFLBKQLIZ-UHFFFAOYSA-N 0.000 claims description 2
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 claims description 2
- CBOCVOKPQGJKKJ-UHFFFAOYSA-L Calcium formate Chemical group [Ca+2].[O-]C=O.[O-]C=O CBOCVOKPQGJKKJ-UHFFFAOYSA-L 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 229940044172 calcium formate Drugs 0.000 claims description 2
- 235000019255 calcium formate Nutrition 0.000 claims description 2
- 239000004281 calcium formate Substances 0.000 claims description 2
- 229920003086 cellulose ether Polymers 0.000 claims description 2
- 238000000748 compression moulding Methods 0.000 claims description 2
- 239000004643 cyanate ester Substances 0.000 claims description 2
- CYKDLUMZOVATFT-UHFFFAOYSA-N ethenyl acetate;prop-2-enoic acid Chemical compound OC(=O)C=C.CC(=O)OC=C CYKDLUMZOVATFT-UHFFFAOYSA-N 0.000 claims description 2
- 238000005187 foaming Methods 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010451 perlite Substances 0.000 claims description 2
- 235000019362 perlite Nutrition 0.000 claims description 2
- 229920003192 poly(bis maleimide) Polymers 0.000 claims description 2
- 229920006122 polyamide resin Polymers 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- 239000009719 polyimide resin Substances 0.000 claims description 2
- 229920005594 polymer fiber Polymers 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 239000004965 Silica aerogel Substances 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 12
- 238000005303 weighing Methods 0.000 description 11
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical group OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 8
- 238000012216 screening Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 238000000465 moulding Methods 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000009746 freeze damage Effects 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 4
- 239000011325 microbead Substances 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- WHOZNOZYMBRCBL-OUKQBFOZSA-N (2E)-2-Tetradecenal Chemical compound CCCCCCCCCCC\C=C\C=O WHOZNOZYMBRCBL-OUKQBFOZSA-N 0.000 description 2
- MQJKPEGWNLWLTK-UHFFFAOYSA-N Dapsone Chemical compound C1=CC(N)=CC=C1S(=O)(=O)C1=CC=C(N)C=C1 MQJKPEGWNLWLTK-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000004746 geotextile Substances 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229940044654 phenolsulfonic acid Drugs 0.000 description 2
- 229920006389 polyphenyl polymer Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- BWLKKFSDKDJGDZ-UHFFFAOYSA-N [isocyanato(phenyl)methyl]benzene Chemical compound C=1C=CC=CC=1C(N=C=O)C1=CC=CC=C1 BWLKKFSDKDJGDZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- ZZTCPWRAHWXWCH-UHFFFAOYSA-N diphenylmethanediamine Chemical compound C=1C=CC=CC=1C(N)(N)C1=CC=CC=C1 ZZTCPWRAHWXWCH-UHFFFAOYSA-N 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000005297 material degradation process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000003359 percent control normalization Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/22—After-treatment of expandable particles; Forming foamed products
- C08J9/228—Forming foamed products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/22—After-treatment of expandable particles; Forming foamed products
- C08J9/224—Surface treatment
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
- C08J2325/06—Polystyrene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2461/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2461/04—Condensation polymers of aldehydes or ketones with phenols only
- C08J2461/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- 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
- C08K3/34—Silicon-containing compounds
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- 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
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- C08K7/24—Expanded, porous or hollow particles inorganic
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Abstract
The invention discloses a flame-retardant polystyrene board material, a preparation method thereof and application thereof in tunnel heat preservation engineering, belonging to the technical field of tunnel heat preservation, wherein the flame-retardant polystyrene board material comprises the following raw materials in parts by weight: 5-15 parts of polystyrene particles, 1-5 parts of emulsion, 20-30 parts of silicate, 0.1-1.5 parts of fiber, 0.1-1 part of water repellent, 20-30 parts of inorganic filler, 10-30 parts of thermosetting resin, 2-10 parts of resin curing agent and 1-5 parts of water. The heat preservation device for the tunnel in the cold region is provided with a primary supporting sprayed concrete layer, a geotechnical cloth layer, a waterproof board layer, a flame-retardant polystyrene board and a secondary lining concrete layer from inside to outside in sequence. The invention improves the flame retardant property of the polystyrene board, and can better preserve the heat of the surrounding rock of the tunnel, thereby better adapting to the special climatic conditions of the cold region and improving the safety and stability of the tunnel operation of the cold region.
Description
Technical Field
The invention belongs to the technical field of tunnel heat preservation, and particularly relates to a flame-retardant polystyrene board material, a preparation method thereof and application thereof in tunnel heat preservation engineering.
Background
The cold area of China is widely distributed and accounts for about 70% of the territorial area, so that a plurality of tunnel projects are built in order to meet the economic and social development demands, and the number of tunnels under construction and planning is quite large. At present, from the view point of established engineering, the problem of freeze injury frequently occurs, and the problem of freeze injury frequently becomes a main problem of a tunnel in a cold region, and the using function and durability of the tunnel are seriously affected. The freeze injury of a tunnel can be divided into: lining cracks, hot melt collapse, ice hanging, lining material degradation and the like. The frost damage occurrence factors of specific projects are many, and the unsmooth drainage or failure of the drainage prevention and control system caused by the problems of construction quality, design and the like is one of the main reasons.
Groundwater is a primary factor causing freeze injury to tunnels. After the tunnel is built, the underground water is immersed between the tunnel lining and the surrounding rock of the tunnel, even in the tunnel lining, and heat exchange is carried out between the underground water and the outside through the tunnel. When the external temperature is too low, the water freezes to cause frost heaving of surrounding rock and generate extra pressure on the tunnel lining structure; groundwater permeates into the tunnel lining, and the tunnel lining material is degraded due to repeated frost heaving action of moisture in the tunnel lining.
At present, the antifreezing measures of the tunnel in the cold region mainly comprise: a heating method, a heat preservation and insulation layer method, a cold-proof door method and the like. The heat preservation and insulation layer is widely used because of small engineering investment and strong applicability, and meets the heat preservation and insulation requirements; the modes of laying heat-insulating materials mainly comprise two modes: the first is laid between the primary support and the secondary lining; the second is laid between the primary support and the secondary lining and on the secondary lining surface. In the prior art, a form of paving a double-layer waterproof board and a heat insulation board between the primary support and the secondary lining is adopted, and the waterproof board is welded with a connecting belt, so that the swelling phenomenon can be caused.
The traditional heat insulating material such as polyurethane material is inflammable, easy to drip and melt, large in burning smoke, high in heat conductivity coefficient, poor in heat insulating effect, large in apparent density, heavy in self weight in the application process and high in falling risk.
Therefore, how to develop a flame-retardant polystyrene board material, a preparation method thereof and application thereof in tunnel thermal insulation engineering is a technical problem which needs to be solved by the technicians in the field.
Disclosure of Invention
In view of the above, the invention provides a flame-retardant polystyrene board material, a preparation method thereof and application thereof in tunnel thermal insulation engineering.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the flame-retardant polystyrene board material comprises the following raw materials in parts by weight: 5-15 parts of polystyrene particles, 1-5 parts of emulsion, 20-30 parts of silicate, 0.1-1.5 parts of fiber, 0.1-1 part of water repellent, 20-30 parts of inorganic filler, 10-30 parts of thermosetting resin, 2-10 parts of resin curing agent and 1-5 parts of water.
Further, the above polystyrene particles are pre-expanded polystyrene particles having a bulk density of 4 to 20 kg/cube.
Preferably, the bulk density is from 6 to 18 kg/cube.
The beneficial effect of adopting the further technical scheme is that: the fire resistance of the polystyrene board obtained when the bulk density is 6-18 kg/cube is obviously improved.
Further, the emulsion is one or more than two of silicone-acrylate emulsion, pure acrylic emulsion, styrene-acrylate emulsion and vinyl acetate-acrylate emulsion.
Further, the silicate is one or more of lithium silicate, sodium silicate and potassium silicate.
Further, the fibers are one or more of polymer fibers and inorganic fibers.
Preferably, the fibers are polypropylene fibers, polyamide fibers or glass fibers.
Further, the early strength agent is calcium formate, the water-retaining agent is cellulose ether, and the water repellent agent is organic silicon.
Further, the inorganic filler is one or more than two of aluminum hydroxide, magnesium hydroxide, calcium carbonate, silicon dioxide, barium sulfate, fly ash, floating beads, silicon dioxide aerogel, expanded perlite, expanded graphite and vitrified micro bubbles.
Further, the thermosetting resin is a phenolic resin, an epoxy resin, a polyamide resin, a polycarbonate, a cyanate ester, a bismaleimide resin, or a polyimide resin.
Further, the resin curing agent is phosphoric acid, phenolsulfonic acid, diaminodiphenyl sulfone, diaminodiphenyl methane or diphenylmethane isocyanate.
The invention also provides a preparation method of the flame-retardant polystyrene board, which comprises the following steps:
s1, mixing silicate, emulsion, inorganic filler, a monk water agent and water to form a coating agent A;
s2, fully mixing and coating the coating agent A and the pre-expanded polystyrene particles, and then transferring to 50-80 ℃ for fully drying and dispersing to obtain a pre-expanded polystyrene particle composition B after primary coating;
s3, fully mixing thermosetting resin, inorganic filler, fiber and water into a main agent of the coating agent C;
s4, fully mixing and coating the main agent of the coating agent C, the resin curing agent and the pre-expanded polystyrene particles B after primary coating to obtain a pre-expanded polystyrene particle composition D after secondary coating;
s5, transferring the composition D to a die, performing compression molding at normal temperature, maintaining pressure, drying and curing to obtain a flame-retardant polystyrene board or transferring the composition D to a forming machine at 50-65 ℃, drying and dispersing the composition D, transferring the composition D to the forming machine, and performing steam foaming and forming to obtain the flame-retardant polystyrene board;
the coating agent A comprises the following components in parts by weight: 20-40 parts of silicate, 1-5 parts of emulsion, 0.1-1 part of water repellent, 10-20 parts of inorganic filler and 10-20 parts of water;
the weight ratio of each component of the pre-expanded polystyrene particles mixed with the coating agent A is 6-18 parts, and the bulk density of the pre-expanded polystyrene particles is 4-20 kg/cube;
the coating agent C comprises the following components in parts by weight: 10-30 parts of thermosetting resin, 2-10 parts of resin curing agent: 10-20 parts of inorganic filler, 0.1-2 parts of fiber and 10-20 parts of water.
The invention also provides an application of the flame-retardant polystyrene board material or the flame-retardant polystyrene board material prepared by the method in tunnel heat preservation engineering, which is characterized in that the tunnel heat preservation engineering is a heat preservation device for a cold area tunnel, and the heat preservation device for the cold area tunnel is sequentially provided with a primary support sprayed concrete layer, a geotechnical cloth layer, a waterproof board layer, a flame-retardant polystyrene board and a secondary lining concrete layer from inside to outside;
embedding a grid steel frame in the primary support sprayed concrete layer;
the geotechnical cloth layer is fixed on the primary support shotcrete layer in a penetrating way through a plurality of steel nails;
one side of the waterproof board layer is adhered and bonded with the geotechnical cloth layer;
the other side of the waterproof board layer is connected with a plurality of self-adhesive tapes through hot melt adhesive, the flame-retardant polystyrene board is adhered to the waterproof board layer through the plurality of self-adhesive tapes, and the adhered part is fixed through a plurality of expansion screws;
the secondary lining concrete layer is paved on the flame-retardant polystyrene board.
Further, the thickness of the primary support shotcrete layer is 50-100mm.
Further, the intervals of the steel nails are 500mm.
The invention has the beneficial effects that: the flame-retardant polystyrene board is prepared by secondarily coating the polystyrene particles, wherein the polystyrene particles are coated with the silicate system composition for the first time, and the polystyrene particles are coated with the thermosetting resin system composition for the second time. After the first coating, the silicate system composition carries out inorganic modification on the interface of the polystyrene particles, so that the flame retardant capability of the polystyrene particles is improved, and the thermosetting resin composition is used for coating and bonding the polystyrene particles into a plate for the second time, so that the flame retardant performance of the polystyrene plate is improved.
The interface of the tunnel rock wall, the primary support sprayed concrete layer and the secondary lining concrete layer is easy to freeze, thaw and shrink, repeated loading and forced deformation possibly generated to the whole structure are realized, and the geotechnical cloth layer, the waterproof plate layer and the flame-retardant polystyrene board material are arranged between the primary support sprayed concrete layer and the secondary lining concrete layer, so that the tunnel rock wall is supported, the damage of the surrounding rock permeability, the water frost and the expansion force to the secondary lining concrete layer is reduced, the tunnel surrounding rock is better insulated, the special weather conditions of a cold region are better adapted, the freezing injury of the primary support sprayed concrete layer and the secondary lining concrete layer to the structure due to the water freeze and thawing circulation at the back part of the primary support sprayed concrete layer and the secondary lining concrete layer is reduced, and the safety and the stability of the tunnel operation in the cold region are improved.
Drawings
FIG. 1 is a schematic diagram of a heat preservation device for a tunnel in a cold region;
FIG. 2 is a schematic diagram of a local enlarged structure of a heat preservation device for a tunnel in a cold region;
FIG. 3 is a schematic view of a primary shotcrete structure;
FIG. 4 is a schematic view of the structure of the geotextile layer fixed on the primary support shotcrete layer;
fig. 5 is a schematic view of a waterproof board structure.
Fig. 6 is a schematic structural view of a heat preservation device of comparative example 1, "double-layer waterproof board+heat preservation board".
The concrete is characterized by comprising a 1-tunnel rock wall, a 2-primary shotcrete layer, a 3-geotextile layer, a 4-waterproof board layer, a 5-flame-retardant polystyrene board, a 6-secondary lining concrete layer, a 7-grid steel frame, 8-steel nails, 9-self-adhesive tapes and 10-expansion screws.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The preparation method of the flame-retardant polystyrene board material comprises the following steps:
1) Screening pre-expanded polystyrene particles having a bulk density of 6 kg/cube;
2) Weighing 35 parts of potassium silicate, 3 parts of emulsion, 0.5 part of water repellent, 5 parts of hollow microbeads, 5 parts of fly ash and 20 parts of water, uniformly mixing to obtain a coating agent A, and adding the coating agent A into the pre-expanded polystyrene particles in the step 1) to perform primary coating;
3) Transferring the polystyrene particles subjected to primary coating into a drying oven at 65 ℃ for drying for 8 hours, and stirring and dispersing the polystyrene particles during the drying process to finally obtain the primary coated polystyrene particles in a dry and dispersed state;
4) Weighing 15 parts of phenolic resin, 2 parts of polypropylene fiber, 10 parts of aluminum hydroxide, 10 parts of calcium carbonate and 20 parts of water, fully and uniformly mixing to prepare a main agent of a coating agent C, wherein the resin curing agent of the coating agent C is phosphoric acid, the amount of the resin curing agent is 5 parts, and the resin curing agent is independently stored and added during coating;
5) Fully mixing the material prepared in the step 3) with the coating agent C prepared in the step 4), uniformly coating, drying and dispersing, and transferring to a forming machine for molding;
6) And (5) after demoulding, drying at normal temperature, curing for 14d, and cutting to obtain the flame-retardant polystyrene board material.
Example 2
The preparation method of the flame-retardant polystyrene board material comprises the following steps:
1) Screening pre-expanded polystyrene particles having a bulk density of 8 kg/cube;
2) Weighing 20 parts of potassium silicate, 5 parts of emulsion, 0.6 part of water repellent, 7 parts of hollow microbeads, 5 parts of fly ash and 20 parts of water, uniformly mixing to obtain a coating agent A, and adding the coating agent A into the pre-expanded polystyrene particles in the step 1) to perform primary coating;
3) Transferring the polystyrene particles subjected to primary coating into a drying oven at 65 ℃ for drying for 8 hours, and stirring and dispersing the polystyrene particles during the drying process to finally obtain the primary coated polystyrene particles in a dry and dispersed state;
4) Weighing 15 parts of epoxy resin, 2 parts of glass fiber, 10 parts of magnesium hydroxide, 10 parts of silicon dioxide and 20 parts of water, fully and uniformly mixing to prepare a main agent of a coating agent C, wherein the resin curing agent of the coating agent C is diamino diphenyl sulfone, the amount of the resin curing agent is 3 parts, and the resin curing agent is independently stored and added during coating;
5) Fully mixing the material prepared in the step 3) with the coating agent C prepared in the step 4), uniformly coating, and transferring to a special die;
6) And (5) after demoulding, drying at normal temperature, curing for 14d, and cutting to obtain the flame-retardant polystyrene board material.
Example 3
The preparation method of the flame-retardant polystyrene board comprises the following steps:
1) Screening pre-expanded polystyrene particles having a bulk density of 10 kg/cube;
2) Weighing 20 parts of potassium silicate, 2 parts of emulsion, 0.2 part of water repellent, 5 parts of hollow microbeads, 5 parts of fly ash and 20 parts of water, uniformly mixing to obtain a coating agent A, and adding the coating agent A into the pre-expanded polystyrene particles in the step 1) to perform primary coating;
3) Transferring the polystyrene particles subjected to primary coating into a drying oven at 65 ℃ for drying for 8 hours, and stirring and dispersing the polystyrene particles during the drying process to finally obtain the primary coated polystyrene particles in a dry and dispersed state;
4) 15 parts of polyurethane resin, 1.5 parts of glass fiber, 10 parts of floating beads and 20 parts of water are weighed and mixed fully and uniformly to prepare a main agent of a coating agent C, wherein the resin curing agent of the coating agent C is diphenylmethane diisocyanate, the amount of the resin curing agent is 3 parts, and the resin curing agent is stored independently and added during coating;
5) Fully mixing the material prepared in the step 3) with the coating agent C prepared in the step 4), uniformly coating, drying and dispersing, and transferring to a forming machine for molding;
6) And (5) after demoulding, drying at normal temperature, curing for 14d, and cutting to obtain the flame-retardant polystyrene board material.
Example 4
The preparation method of the flame-retardant polystyrene board comprises the following steps:
1) Screening pre-expanded polystyrene particles having a bulk density of 12 kg/cube;
2) Weighing 30 parts of potassium silicate, 5 parts of lithium silicate, 4 parts of emulsion, 0.4 part of water repellent, 5 parts of fly ash and 20 parts of water, uniformly mixing to obtain a coating agent A, and adding the coating agent A into the pre-expanded polystyrene particles in the step 1) to perform primary coating;
3) Transferring the polystyrene particles subjected to primary coating into a drying oven at 65 ℃ for drying for 8 hours, and stirring and dispersing the polystyrene particles during the drying process to finally obtain the primary coated polystyrene particles in a dry and dispersed state;
4) Weighing 20 parts of phenolic resin, 1.5 parts of polypropylene fiber, 10 parts of magnesium hydroxide, 10 parts of calcium carbonate and 20 parts of water, fully and uniformly mixing to prepare a main agent of a coating agent C, wherein the resin curing agent of the coating agent C is phenol sulfonic acid, the quantity of the resin curing agent is 2 parts, and the resin curing agent is independently stored and added during coating;
5) Fully mixing the material prepared in the step 3) with the coating agent C prepared in the step 4), uniformly coating, drying and dispersing, and transferring to a forming machine for molding;
6) And (5) after demoulding, drying at normal temperature, curing for 14d, and cutting to obtain the flame-retardant polystyrene board material.
Example 5
The preparation method of the flame-retardant polystyrene board comprises the following steps:
1) Screening pre-expanded polystyrene particles having a bulk density of 14 kg/cube;
2) Weighing 30 parts of potassium silicate, 5 parts of lithium silicate, 4 parts of emulsion, 0.4 part of water repellent, 5 parts of hollow microbeads and 20 parts of water, uniformly mixing to obtain a coating agent A, and adding the coating agent A into the pre-expanded polystyrene particles in the step 1) to perform primary coating;
3) Transferring the polystyrene particles subjected to primary coating into a drying oven at 65 ℃ for drying for 8 hours, and stirring and dispersing the polystyrene particles during the drying process to finally obtain the primary coated polystyrene particles in a dry and dispersed state;
4) Weighing 20 parts of phenolic resin, 1 part of polypropylene fiber, 10 parts of aluminum hydroxide, 10 parts of calcium carbonate and 20 parts of water, fully and uniformly mixing to prepare a main agent of a coating agent C, wherein the resin curing agent of the coating agent C is phosphoric acid, the quantity of the resin curing agent is 5 parts, and the resin curing agent is independently stored and added during coating;
5) Fully mixing the material prepared in the step 3) with the coating agent C prepared in the step 4), uniformly coating, drying and dispersing, and transferring to a forming machine for molding;
6) And (5) after demoulding, drying at normal temperature, curing for 14d, and cutting to obtain the flame-retardant polystyrene board material.
Example 6
The preparation method of the flame-retardant polystyrene board comprises the following steps:
1) Screening pre-expanded polystyrene particles having a bulk density of 18 kg/cube;
2) Weighing 15 parts of potassium silicate, 15 parts of sodium silicate, 5 parts of lithium silicate, 2 parts of emulsion, 0.1 part of water repellent, 5 parts of floating beads and 20 parts of water, uniformly mixing to obtain a coating agent A, and adding the coating agent A into the pre-expanded polystyrene particles in the step 1) to perform primary coating;
3) Transferring the polystyrene particles subjected to primary coating into a drying oven at 65 ℃ for drying for 8 hours, and stirring and dispersing the polystyrene particles during the drying process to finally obtain the primary coated polystyrene particles in a dry and dispersed state;
4) Weighing 20 parts of phenolic resin, 1 part of glass fiber, 10 parts of magnesium hydroxide, 10 parts of calcium carbonate and 20 parts of water, fully and uniformly mixing to prepare a main agent of a coating agent C, wherein the resin curing agent of the coating agent C is phosphoric acid, the quantity of the resin curing agent is 5 parts, and the resin curing agent is independently stored and added during coating;
5) Fully mixing the material prepared in the step 3) with the coating agent C prepared in the step 4), uniformly coating, drying and dispersing, and transferring to a forming machine for molding;
6) And (5) after demoulding, drying at normal temperature, curing for 14d, and cutting to obtain the flame-retardant polystyrene board material.
In summary, the conventional preparation method of the polystyrene board material was used as a control group, and the preparation method of the polystyrene board material of the present invention was used as an experimental group, and the control group was compared with the polystyrene board materials of examples 1 to 6. Under the same conditions, index data of each item are obtained as follows in table 1:
TABLE 1
| Project | Oxygen index |
| Unit (B) | ％ |
| Control group | 30 |
| Example 1 | 45 |
| Example 2 | 49 |
| Example 3 | 43 |
| Example 4 | 52 |
| Example 5 | 50 |
| Example 6 | 55 |
As can be seen from the above Table 1, the polystyrene board material obtained by the present invention has a significantly higher flame retardant property than the polystyrene board material obtained by the conventional preparation method.
As shown in fig. 1 and 2, the heat preservation device for the tunnel in the cold region is provided with a primary shotcrete layer 2, a geotechnical cloth layer 3, a waterproof board layer 4, a flame-retardant polyphenyl board 5 and a secondary lining concrete layer 6 from inside to outside in sequence; the heat preservation device is paved on a tunnel rock wall 1;
as shown in fig. 3, a grid steel frame 7 is buried in the primary support shotcrete layer 2; the primary support shotcrete layer 2 covers the tunnel rock wall 1 completely; the grid steel frame 7 is easy to form a whole with the primary shotcrete layer 2, a water seepage channel is not easy to form on the contact surface, the durability and the freezing resistance of the primary support are improved, the primary shotcrete layer 2 is used as a tunnel lining, and the functions of support and fire prevention are simultaneously exerted. The primary support shotcrete layer 2 is used for filling and leveling uneven parts of the tunnel rock wall 1, and leveling protruding corner parts such as the grid steel frame 7 and the like to enable a base surface to be basically flat, so that the heat insulation performance is prevented from being influenced by puncturing the geotechnical cloth layer 3 and the waterproof board layer 4.
As shown in fig. 4, the geotechnical cloth layer 3 is fixed on the primary support shotcrete layer 2 in a penetrating way through a plurality of steel nails 8; the geotechnical cloth layer 3 isolates the primary support sprayed concrete layer 2 and the waterproof board layer 4, so that the primary support sprayed concrete layer 2 and the waterproof board layer keep the overall structure and functions, the carrying capacity is enhanced, the tensile strength and the deformation resistance of the primary support sprayed concrete layer 2 are enhanced, and the stability of the primary support sprayed concrete layer 2 is enhanced; the geotechnical cloth layer 3 has good water conductivity, and can discharge redundant liquid and gas in the structure of the primary support shotcrete layer 2;
one side of the waterproof board layer 4 is adhered and bonded with the geotechnical cloth layer 3; the waterproof board layer 4 can effectively prevent the erosion and other influences of redundant liquid and gas on the secondary lining concrete layer 6, and prevent the frost heaving among the tunnel rock wall 1, the primary support shotcrete layer 2 and the secondary lining concrete layer 6 from being influenced and degraded mutually; the influence of the surface unevenness of the primary shotcrete layer 2 on the waterproof board layer 4 is prevented, and the geotechnical cloth layer 3 is resistant to high temperature, freezing, aging and corrosion and is not damaged by worms;
as shown in fig. 5, the other side of the waterproof board layer 4 is connected with a plurality of self-adhesive tapes 9 through hot melt adhesives, the flame-retardant polystyrene board 5 is adhered to the waterproof board layer 4 through the plurality of self-adhesive tapes 9, and the adhered part is fixed through a plurality of expansion screws 10. The self-adhesive tape 9 and the expansion bolts 10 enable the waterproof board layer 4 to be completely attached to the surfaces of the geotechnical cloth layer 3 and the primary support shotcrete layer 2, no air enters, and the heat preservation effect is excellent;
a secondary lining concrete layer 6 is laid on the flame-retardant polystyrene board 5.
In one embodiment, the thickness of the primary support shotcrete 2 is 50-100mm.
In one embodiment, the number of steel studs 8 is 500mm apart.
Comparative example 1
As shown in fig. 6, the heat preservation device using the double-layer waterproof board and the heat preservation board sequentially sets the primary support sprayed concrete layer, the geotechnical cloth layer, the first waterproof board layer, the flame-retardant polyphenyl board and the second waterproof board layer from inside to outside, and the method has the advantages that the lap joint gap between the two boards is larger in the construction process, the gap is larger towards the vault direction, the heat preservation effect is greatly reduced, and the construction efficiency is low.
The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The flame-retardant polystyrene board material is characterized by comprising the following raw materials in parts by weight: 5-15 parts of polystyrene particles, 1-5 parts of emulsion, 20-30 parts of silicate, 0.1-1.5 parts of fiber, 0.1-1 part of water repellent, 20-30 parts of inorganic filler, 10-30 parts of thermosetting resin, 2-10 parts of resin curing agent and 1-5 parts of water.
2. The flame retardant polystyrene board material according to claim 1, wherein said polystyrene particles are pre-expanded polystyrene particles having a bulk density of 4 to 20 kg/cc.
3. The flame-retardant polystyrene board material according to claim 1, wherein the emulsion is one or more of silicone-acrylate emulsion, pure acrylic emulsion, styrene-acrylate emulsion and vinyl acetate-acrylate emulsion.
4. The flame-retardant polystyrene board material according to claim 1, wherein the silicate is one or more of lithium silicate, sodium silicate and potassium silicate.
5. The flame-retardant polystyrene board material according to claim 1, wherein the fibers are one or more of polymer fibers and inorganic fibers.
6. The flame-retardant polystyrene board material according to claim 1, wherein the early strength agent is calcium formate, the water-retaining agent is cellulose ether, and the water repellent agent is organic silicon.
7. The flame-retardant polystyrene board material according to claim 1, wherein the inorganic filler is one or more of aluminum hydroxide, magnesium hydroxide, calcium carbonate, silica, barium sulfate, fly ash, floating beads, silica aerogel, expanded perlite, expanded graphite, and vitrified micro bubbles.
8. The flame retardant polystyrene board material according to claim 1, wherein said thermosetting resin is a phenolic resin, an epoxy resin, a polyamide resin, a polycarbonate, a cyanate ester, a bismaleimide resin or a polyimide resin.
9. A method for preparing the flame retardant polystyrene board material according to any one of claims 1 to 8, comprising the steps of:
s1, mixing silicate, emulsion, inorganic filler, a monk water agent and water to form a coating agent A;
s2, fully mixing and coating the coating agent A and the pre-expanded polystyrene particles, and then transferring to 50-80 ℃ for fully drying and dispersing to obtain a pre-expanded polystyrene particle composition B after primary coating;
s3, fully mixing thermosetting resin, inorganic filler, fiber and water into a main agent of the coating agent C;
s4, fully mixing and coating the main agent of the coating agent C, the resin curing agent and the pre-expanded polystyrene particles B after primary coating to obtain a pre-expanded polystyrene particle composition D after secondary coating;
s5, transferring the composition D to a die, performing compression molding at normal temperature, maintaining pressure, drying and curing to obtain a flame-retardant polystyrene board material or transferring the composition D to a forming machine at 50-65 ℃, drying and dispersing, transferring to the forming machine, and performing steam foaming and forming to obtain the flame-retardant polystyrene board material;
the coating agent A comprises the following components in parts by weight: 20-40 parts of silicate, 1-5 parts of emulsion, 0.1-1 part of water repellent, 10-20 parts of inorganic filler and 10-20 parts of water;
the weight ratio of each component of the pre-expanded polystyrene particles mixed with the coating agent A is 6-18 parts, and the bulk density of the pre-expanded polystyrene particles is 4-20 kg/cube;
the coating agent C comprises the following components in parts by weight: 10-30 parts of thermosetting resin, 2-10 parts of resin curing agent: 10-20 parts of inorganic filler, 0.1-2 parts of fiber and 10-20 parts of water.
10. The application of the flame-retardant polystyrene board material according to any one of claims 1 to 8 or the flame-retardant polystyrene board material prepared by the method according to claim 9 in tunnel heat preservation engineering is characterized in that the tunnel heat preservation engineering is a heat preservation device for a cold area tunnel, and the heat preservation device for the cold area tunnel is sequentially provided with a primary shotcrete layer, a geotechnical cloth layer, a waterproof board layer, a flame-retardant polystyrene board and a secondary lining concrete layer from inside to outside;
a grid steel frame is buried in the primary support sprayed concrete layer;
the geotechnical cloth layer is fixed on the primary support shotcrete layer in a penetrating way through a plurality of steel nails;
one side of the waterproof board layer is bonded and attached with the geotechnical cloth layer;
the other side of the waterproof board layer is connected with a plurality of self-adhesive tapes through hot melt adhesives, the flame-retardant polystyrene board is adhered to the waterproof board layer through the plurality of self-adhesive tapes, and the adhered part is fixed through a plurality of expansion screws;
the secondary lining concrete layer is paved on the flame-retardant polystyrene board.
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| CN202310061175.2A CN116284957A (en) | 2023-01-16 | 2023-01-16 | Flame-retardant polystyrene board material, preparation method thereof and application thereof in tunnel thermal insulation engineering |
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|---|---|---|---|
| CN202310061175.2A CN116284957A (en) | 2023-01-16 | 2023-01-16 | Flame-retardant polystyrene board material, preparation method thereof and application thereof in tunnel thermal insulation engineering |
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