CN115403343A - Fireproof heat-insulation concrete wallboard and preparation method thereof - Google Patents
Fireproof heat-insulation concrete wallboard and preparation method thereof Download PDFInfo
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- CN115403343A CN115403343A CN202211238287.2A CN202211238287A CN115403343A CN 115403343 A CN115403343 A CN 115403343A CN 202211238287 A CN202211238287 A CN 202211238287A CN 115403343 A CN115403343 A CN 115403343A
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- 239000004567 concrete Substances 0.000 title claims abstract description 122
- 238000009413 insulation Methods 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000003822 epoxy resin Substances 0.000 claims abstract description 43
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 43
- 239000006260 foam Substances 0.000 claims abstract description 21
- 239000003381 stabilizer Substances 0.000 claims abstract description 21
- 239000004088 foaming agent Substances 0.000 claims abstract description 20
- 238000004321 preservation Methods 0.000 claims abstract description 18
- 230000002265 prevention Effects 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims description 85
- 238000003756 stirring Methods 0.000 claims description 82
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 43
- 239000002002 slurry Substances 0.000 claims description 37
- -1 polypropylene Polymers 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 29
- 239000004568 cement Substances 0.000 claims description 23
- 239000010881 fly ash Substances 0.000 claims description 22
- 239000003054 catalyst Substances 0.000 claims description 19
- 239000003638 chemical reducing agent Substances 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- SYEWHONLFGZGLK-UHFFFAOYSA-N 2-[1,3-bis(oxiran-2-ylmethoxy)propan-2-yloxymethyl]oxirane Chemical compound C1OC1COCC(OCC1OC1)COCC1CO1 SYEWHONLFGZGLK-UHFFFAOYSA-N 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 14
- 239000004743 Polypropylene Substances 0.000 claims description 12
- 238000007580 dry-mixing Methods 0.000 claims description 12
- 229920001155 polypropylene Polymers 0.000 claims description 12
- 239000011973 solid acid Substances 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 229930182478 glucoside Natural products 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 11
- 150000004658 ketimines Chemical group 0.000 claims description 11
- 238000010992 reflux Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 5
- 239000012783 reinforcing fiber Substances 0.000 claims description 4
- 150000008052 alkyl sulfonates Chemical class 0.000 claims description 3
- 125000003158 alcohol group Chemical group 0.000 claims description 2
- 150000008051 alkyl sulfates Chemical class 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 claims description 2
- 239000002736 nonionic surfactant Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims 4
- 230000009970 fire resistant effect Effects 0.000 claims 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 2
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 239000011148 porous material Substances 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract 1
- 238000004901 spalling Methods 0.000 abstract 1
- 229920000259 polyoxyethylene lauryl ether Polymers 0.000 description 10
- 239000002253 acid Substances 0.000 description 9
- 238000001704 evaporation Methods 0.000 description 9
- 239000012299 nitrogen atmosphere Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 6
- 238000005034 decoration Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 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 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000008030 superplasticizer Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/281—Polyepoxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/32—Epoxy compounds containing three or more epoxy groups
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Building Environments (AREA)
Abstract
The invention relates to the technical field of concrete, in particular to a fireproof heat-insulation concrete wallboard and a preparation method thereof; the invention firstly prepares low-viscosity branched epoxy resin, utilizes the sphere-like structure to improve the dispersion performance in concrete, and utilizes the self film-forming property to fill micro pores in the concrete wallboard, reduce the water absorption, improve the impact resistance of the wallboard and prevent the surface from cracking and stripping; later this application further uses foaming agent and foam stabilizer to compound, makes the obturator bubble in the concrete wall board increase, promotes its thermal-insulated heat preservation performance. The concrete wallboard of this application preparation has good fire prevention heat preservation ability, and shock resistance, resistant spalling-resistant ability are strong, have excellent performance.
Description
Technical Field
The invention relates to the technical field of concrete, in particular to a fireproof heat-insulation concrete wallboard and a preparation method thereof.
Background
With the continuous progress of interior decoration, the requirements of people on the decoration materials are gradually increased, and the decoration materials also begin to have more functions besides the initial decoration effect. As an indoor decoration material commonly used in recent years, the concrete wallboard is gradually popularized by virtue of the characteristics of light weight and convenience, wherein the wallboard contains a large amount of bubbles and can play a good heat preservation and insulation capacity, but the water absorption of the concrete wallboard is increased due to the fact that the concrete wallboard contains more open pores in the using process, so that the quality of the concrete wallboard is increased, the load is caused to a building, and the application range of the concrete wallboard is limited.
Disclosure of Invention
The invention aims to provide a fireproof heat-insulation concrete wallboard and a preparation method thereof, and aims to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a fire prevention heat preservation concrete wallboard which characterized in that: the fireproof heat-insulation concrete wallboard comprises the following components in parts by weight: 100-130 parts of cement, 25-40 parts of reinforcing fiber, 20-40 parts of fly ash, 1.4-3.1 parts of foaming agent, 0.1-0.9 part of foam stabilizer, 0.5-2 parts of water reducing agent, 4-10 parts of low-viscosity branched epoxy resin, 3.5-7 parts of curing agent and 70-90 parts of mixing water.
Further, the cement is sulphoaluminate cement; the reinforced fiber is any one of glass fiber and polypropylene fiber; the fly ash is any one of class I fly ash and class II fly ash.
Further, the foaming agent is any one or more of alkyl glucoside, alkyl sulfonate and alkyl sulfate; the foam stabilizer is an alcohol nonionic surfactant; the water reducing agent is one or more of a naphthalene water reducing agent and a polyacid water reducing agent.
Further, the curing agent is a ketimine curing agent.
A preparation method of a fireproof heat-insulation concrete wallboard comprises the following steps:
s1, preparing low-viscosity branched epoxy resin;
mixing glycerol triglycidyl ether with ethylene glycol, adding a catalyst, stirring uniformly, heating to 140-150 ℃, and carrying out reflux reaction for 8-12h to obtain low-viscosity branched epoxy resin;
s2, preparing a fireproof heat-insulation concrete wallboard;
s21, dry-mixing cement and fly ash for 5-10min, adding reinforcing fiber, and continuously mixing for 3-5min to obtain a concrete wallboard dry material;
s22, dissolving a water reducing agent in mixing water with the total amount of 60-70%, uniformly stirring, mixing with concrete wallboard dry materials, and uniformly mixing to obtain concrete wallboard slurry;
s23, adding a foaming agent, a foam stabilizer and low-viscosity branched epoxy resin into the residual mixing water, mixing, stirring and mixing at the speed of 1200-1500rpm for 5-8min, adding the mixture into the concrete wallboard slurry, continuously stirring uniformly, adding a curing agent, stirring uniformly, placing the slurry into a mold for curing and forming, and obtaining the fireproof heat-preservation concrete wallboard after curing.
Further, in step S1, the molar ratio of glycerol triglycidyl ether, ethylene glycol, and catalyst is (0.8-1): (1.1-1.3): (0.04-0.06).
Further, in step S1, the catalyst is a solid acid catalyst.
Further, in step S23, during curing, the curing temperature is 65-80 ℃, the curing humidity is 75-95%, and the curing time is 48-72h.
According to the method, firstly, the epoxy resin with a branched structure is prepared, glycerol triglycidyl ether is reacted with ethylene glycol to generate a spheroidal structure, so that a lubricating effect is achieved, the dispersibility of the epoxy resin in a cement system is improved, meanwhile, in the hydration process, water in cement slurry can be continuously consumed by cement, free water is reduced, and finally the epoxy resin is filled in micro pores of a wallboard, so that the water absorption of the micro pores is reduced. Meanwhile, the epoxy resin has good impact resistance, so that the mechanical property of the concrete wallboard can be effectively improved, the surface cracking and stripping are prevented, and the service life of the concrete wallboard is prolonged.
On the basis, the foaming agent and the foam stabilizer are further compounded, so that the foaming effect is ensured, closed cells in the concrete wallboard are increased, the heat insulation performance of the concrete wallboard is improved, and meanwhile, the inorganic component in the concrete matrix can ensure that the concrete has good flame-retardant and fireproof performance, so that the concrete wallboard is improved to be suitable for most environments with fireproof requirements.
This application has still carried out steam curing to the concrete wallboard afterwards to ensure wallboard intensity, increase of service life.
Compared with the prior art, the invention has the following beneficial effects: the invention firstly prepares low-viscosity branched epoxy resin, utilizes the sphere-like structure to improve the dispersion performance in concrete, and utilizes the self film-forming property to fill micro pores in the concrete wallboard, reduce the water absorption, improve the impact resistance of the wallboard and prevent the surface from cracking and stripping; later this application further uses foaming agent and foam stabilizer to compound, makes the obturator bubble in the concrete wall board increase, promotes its thermal-insulated heat preservation performance. The concrete wallboard prepared by the application has good fireproof heat-insulating capacity, strong impact resistance and stripping resistance and excellent use performance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The cement used in the embodiment of the invention is sulphoaluminate fast-shadow cement sold by Thangshan Arctic bear building materials Co., ltd; the fly ash is first-grade fly ash sold by Shijiazhuang torch mineral products, inc.; glycerol triglycidyl ether is sold by Jiangsu New Material Co.Ltd; the solid acid catalyst is a YLCC-1 catalyst sold by Shanghai-Laite New Material science and technology Limited.
Example 1.
The preparation method of the fireproof heat-insulation concrete wallboard comprises the following steps:
s1, preparing low-viscosity branched epoxy resin;
mixing 0.8 part of glycerol triglycidyl ether and 1.1 parts of ethylene glycol in parts by mole, adding 0.04 part of solid acid catalyst TP3, uniformly stirring under the protection of nitrogen atmosphere, heating to 140 ℃, carrying out reflux reaction for 8 hours, and evaporating at 60 ℃ in vacuum until constant weight is achieved to obtain low-viscosity branched epoxy resin;
s2, preparing a fireproof heat-insulation concrete wallboard;
s21, dry-mixing 100 parts of sulphoaluminate cement and 20 parts of I-grade fly ash for 5min at a stirring speed of 60rpm, adding 25 parts of polypropylene fiber, and continuously mixing for 3min to obtain a concrete wallboard dry material;
s22, dissolving 0.5 part of a polycarboxylic acid water reducing agent in 42 parts of mixing water, uniformly stirring, mixing with a concrete wallboard dry material, stirring at the speed of 80rpm for 5min, and uniformly stirring to obtain concrete wallboard slurry;
s23, adding 1.4 parts of alkyl glucoside foaming agent, 0.1 part of polyoxyethylene lauryl ether foam stabilizer and 4 parts of low-viscosity branched epoxy resin into 28 parts of mixing water, mixing and stirring at 1200rpm for 5min, adding into the concrete wallboard slurry, continuing to stir uniformly at 150rpm, adding 3.5 parts of ketimine curing agent, mixing uniformly, placing the slurry into a mold, curing and forming, wherein the curing temperature is 65 ℃, the curing humidity is 75%, the curing time is 48h, and obtaining the fireproof heat-preservation concrete wallboard after curing.
Example 2.
Compared with the embodiment 1, the embodiment increases the addition amount of the glycol in the step S1;
the preparation method of the fireproof heat-insulation concrete wallboard comprises the following steps:
s1, preparing low-viscosity branched epoxy resin;
mixing 0.8 part of glycerol triglycidyl ether and 1.3 parts of ethylene glycol in parts by mole, adding 0.04 part of solid acid catalyst TP3, uniformly stirring under the protection of nitrogen atmosphere, heating to 140 ℃, carrying out reflux reaction for 8 hours, and evaporating at 60 ℃ in vacuum until constant weight is achieved to obtain low-viscosity branched epoxy resin;
s2, preparing a fireproof heat-insulation concrete wallboard;
s21, dry-mixing 100 parts of sulphoaluminate cement and 20 parts of I-grade fly ash for 5min at a stirring speed of 60rpm, adding 25 parts of polypropylene fiber, and continuously mixing for 3min to obtain a concrete wallboard dry material;
s22, dissolving 0.5 part of a polycarboxylic acid water reducing agent in 42 parts of mixing water, uniformly stirring, mixing with concrete wallboard dry materials, stirring at the speed of 80rpm for 5min, and uniformly stirring to obtain concrete wallboard slurry;
s23, adding 1.4 parts of alkyl glucoside foaming agent, 0.1 part of polyoxyethylene lauryl ether foam stabilizer and 4 parts of low-viscosity branched epoxy resin into 28 parts of mixing water, mixing and stirring at 1200rpm for 5min, adding into the concrete wallboard slurry, continuing to stir uniformly at 150rpm, adding 3.5 parts of ketimine curing agent, mixing and stirring uniformly, placing the slurry into a mold, curing and forming, wherein the curing temperature is 65 ℃, the curing humidity is 75%, the curing time is 48h, and obtaining the fireproof heat-preservation concrete wallboard after curing.
Example 3.
This example increased the amount of the blowing agent added in step S23 compared to example 1;
the preparation method of the fireproof heat-insulation concrete wallboard comprises the following steps:
s1, preparing low-viscosity branched epoxy resin;
mixing 0.8 part of glycerol triglycidyl ether and 1.1 parts of ethylene glycol in parts by mole, adding 0.04 part of solid acid catalyst TP3 under the protection of nitrogen atmosphere, uniformly stirring, heating to 140 ℃, performing reflux reaction for 8 hours, and evaporating at 60 ℃ in vacuum until constant weight to obtain low-viscosity branched epoxy resin;
s2, preparing a fireproof heat-insulation concrete wallboard;
s21, dry-mixing 100 parts of sulphoaluminate cement and 20 parts of I-grade fly ash for 5min at a stirring speed of 60rpm, adding 25 parts of polypropylene fiber, and continuously mixing for 3min to obtain a concrete wallboard dry material;
s22, dissolving 0.5 part of a polycarboxylic acid water reducing agent in 42 parts of mixing water, uniformly stirring, mixing with concrete wallboard dry materials, stirring at the speed of 80rpm for 5min, and uniformly stirring to obtain concrete wallboard slurry;
s23, adding 3.1 parts of alkyl glucoside foaming agent, 0.1 part of polyoxyethylene lauryl ether foam stabilizer and 4 parts of low-viscosity branched epoxy resin into 28 parts of mixing water, mixing and stirring at 1200rpm for 5min, adding into the concrete wallboard slurry, continuing to stir uniformly at 150rpm, adding 3.5 parts of ketimine curing agent, mixing uniformly, placing the slurry into a mold, curing and forming, wherein the curing temperature is 65 ℃, the curing humidity is 75%, the curing time is 48h, and obtaining the fireproof heat-preservation concrete wallboard after curing.
Example 4.
Compared with example 1, the present example increases the addition amount of the foam stabilizer in step S23;
the preparation method of the fireproof heat-insulation concrete wallboard comprises the following steps:
s1, preparing low-viscosity branched epoxy resin;
mixing 0.8 part of glycerol triglycidyl ether and 1.1 parts of ethylene glycol in parts by mole, adding 0.04 part of solid acid catalyst TP3, uniformly stirring under the protection of nitrogen atmosphere, heating to 140 ℃, carrying out reflux reaction for 8 hours, and evaporating at 60 ℃ in vacuum until constant weight is achieved to obtain low-viscosity branched epoxy resin;
s2, preparing a fireproof heat-insulation concrete wallboard;
s21, dry-mixing 100 parts of sulphoaluminate cement and 20 parts of I-grade fly ash for 5min at a stirring speed of 60rpm, adding 25 parts of polypropylene fiber, and continuously mixing for 3min to obtain a concrete wallboard dry material;
s22, dissolving 0.5 part of a polycarboxylic acid water reducing agent in 42 parts of mixing water, uniformly stirring, mixing with concrete wallboard dry materials, stirring at the speed of 80rpm for 5min, and uniformly stirring to obtain concrete wallboard slurry;
s23, adding 1.4 parts of alkyl glucoside foaming agent, 0.9 part of polyoxyethylene lauryl ether foam stabilizer and 4 parts of low-viscosity branched epoxy resin into 28 parts of mixing water, mixing and stirring at 1200rpm for 5min, adding into the concrete wallboard slurry, continuing to stir uniformly at 150rpm, adding 3.5 parts of ketimine curing agent, mixing and stirring uniformly, placing the slurry into a mold, curing and forming, wherein the curing temperature is 65 ℃, the curing humidity is 75%, the curing time is 48h, and obtaining the fireproof heat-preservation concrete wallboard after curing.
Example 5.
Compared with the embodiment 1, the embodiment increases the addition amount of the low-viscosity hyperbranched epoxy resin and the curing agent in the step S23;
the preparation method of the fireproof heat-insulation concrete wallboard comprises the following steps:
s1, preparing low-viscosity branched epoxy resin;
mixing 0.8 part of glycerol triglycidyl ether and 1.1 parts of ethylene glycol in parts by mole, adding 0.04 part of solid acid catalyst TP3, uniformly stirring under the protection of nitrogen atmosphere, heating to 140 ℃, carrying out reflux reaction for 8 hours, and evaporating at 60 ℃ in vacuum until constant weight is achieved to obtain low-viscosity branched epoxy resin;
s2, preparing a fireproof heat-insulation concrete wallboard;
s21, dry-mixing 100 parts of sulphoaluminate cement and 20 parts of I-grade fly ash for 5min at a stirring speed of 60rpm, adding 25 parts of polypropylene fiber, and continuously mixing for 3min to obtain a concrete wallboard dry material;
s22, dissolving 0.5 part of a polycarboxylic acid water reducing agent in 42 parts of mixing water, uniformly stirring, mixing with concrete wallboard dry materials, stirring at the speed of 80rpm for 5min, and uniformly stirring to obtain concrete wallboard slurry;
s23, adding 1.4 parts of alkyl glucoside foaming agent, 0.1 part of polyoxyethylene lauryl ether foam stabilizer and 10 parts of low-viscosity branched epoxy resin into 28 parts of mixing water, mixing and stirring at 1200rpm for 5min, adding into the concrete wallboard slurry, continuing to stir uniformly at 150rpm, adding 7 parts of ketimine curing agent, mixing uniformly, placing the slurry into a mold, curing and forming, wherein the curing temperature is 65 ℃, the curing humidity is 75%, the curing time is 48h, and obtaining the fireproof heat-preservation concrete wallboard after curing.
Example 6.
This example changed the kind of the foaming agent in step S23 compared with example 1;
the preparation method of the fireproof heat-insulation concrete wallboard comprises the following steps of:
s1, preparing low-viscosity branched epoxy resin;
mixing 0.8 part of glycerol triglycidyl ether and 1.1 parts of ethylene glycol in parts by mole, adding 0.04 part of solid acid catalyst TP3, uniformly stirring under the protection of nitrogen atmosphere, heating to 140 ℃, carrying out reflux reaction for 8 hours, and evaporating at 60 ℃ in vacuum until constant weight is achieved to obtain low-viscosity branched epoxy resin;
s2, preparing a fireproof heat-insulation concrete wallboard;
s21, dry-mixing 100 parts of sulphoaluminate cement and 20 parts of I-grade fly ash for 5min at a stirring speed of 60rpm, adding 25 parts of polypropylene fiber, and continuously mixing for 3min to obtain a concrete wallboard dry material;
s22, dissolving 0.5 part of a polycarboxylic acid water reducing agent in 42 parts of mixing water, uniformly stirring, mixing with concrete wallboard dry materials, stirring at the speed of 80rpm for 5min, and uniformly stirring to obtain concrete wallboard slurry;
s23, adding 1.4 parts of alkyl sulfonate foaming agent, 0.1 part of polyoxyethylene lauryl ether foam stabilizer and 4 parts of low-viscosity branched epoxy resin into 28 parts of mixing water, mixing and stirring at 1200rpm for 5min, adding into the slurry of the concrete water wallboard, continuing to stir uniformly at 150rpm, adding 3.5 parts of ketimine curing agent, mixing uniformly, placing the slurry into a mold, curing and forming, wherein the curing temperature is 65 ℃, the curing humidity is 75%, the curing time is 48h, and obtaining the fireproof heat-preservation concrete wallboard after curing.
Example 7.
In this example, the curing conditions in step S23 were changed as compared with example 1;
the preparation method of the fireproof heat-insulation concrete wallboard comprises the following steps:
s1, preparing low-viscosity branched epoxy resin;
mixing 0.8 part of glycerol triglycidyl ether and 1.1 parts of ethylene glycol in parts by mole, adding 0.04 part of solid acid catalyst TP3 under the protection of nitrogen atmosphere, uniformly stirring, heating to 140 ℃, performing reflux reaction for 8 hours, and evaporating at 60 ℃ in vacuum until constant weight to obtain low-viscosity branched epoxy resin;
s2, preparing a fireproof heat-insulation concrete wallboard;
s21, dry-mixing 100 parts of sulphoaluminate cement and 20 parts of I-grade fly ash for 5min at a stirring speed of 60rpm, adding 25 parts of polypropylene fiber, and continuously mixing for 3min to obtain a concrete wallboard dry material;
s22, dissolving 0.5 part of a polycarboxylic acid water reducing agent in 42 parts of mixing water, uniformly stirring, mixing with a concrete wallboard dry material, stirring at the speed of 80rpm for 5min, and uniformly stirring to obtain concrete wallboard slurry;
s23, adding 1.4 parts of alkyl glucoside foaming agent, 0.1 part of polyoxyethylene lauryl ether foam stabilizer and 4 parts of low-viscosity branched epoxy resin into 28 parts of mixing water, mixing and stirring at 1200rpm for 5min, adding into the concrete wallboard slurry, continuing to stir uniformly at 150rpm, adding 3.5 parts of ketimine curing agent, mixing uniformly, placing the slurry into a mold, curing and forming, wherein the curing temperature is 80 ℃, the curing humidity is 95%, the curing time is 72h, and obtaining the fireproof heat-preservation concrete wallboard after curing.
Example 8.
The preparation method of the fireproof heat-insulation concrete wallboard comprises the following steps of:
s1, preparing low-viscosity branched epoxy resin;
mixing 1 part of glycerol triglycidyl ether and 1.3 parts of ethylene glycol in parts by mole, adding 0.06 part of a solid acid catalyst TP3 under the protection of nitrogen atmosphere, uniformly stirring, heating to 150 ℃, carrying out reflux reaction for 12 hours, and evaporating at 60 ℃ in vacuum until constant weight is achieved to obtain low-viscosity branched epoxy resin;
s2, preparing a fireproof heat-insulation concrete wallboard;
s21, dry-mixing 130 parts by weight of sulphoaluminate cement and 40 parts by weight of I-grade fly ash for 5min at a stirring speed of 60rpm, adding 40 parts by weight of polypropylene fiber, and continuously mixing for 3min to obtain a concrete wallboard dry material;
s22, dissolving 2 parts of a polycarboxylate superplasticizer in 54 parts of mixing water, uniformly stirring, mixing with concrete wallboard dry materials, stirring at a speed of 80rpm for 5min, and uniformly stirring to obtain concrete wallboard slurry;
s23, adding 3.1 parts of alkyl glucoside foaming agent, 0.9 part of polyoxyethylene lauryl ether foam stabilizer and 10 parts of low-viscosity branched epoxy resin into 36 parts of mixing water, stirring and mixing at 1200rpm for 5min, adding into the concrete wallboard slurry, continuing to stir uniformly at 150rpm, adding 7 parts of ketimine curing agent, stirring uniformly, placing the slurry into a mold for curing and forming, wherein the curing temperature is 80 ℃, the curing humidity is 95%, the curing time is 72h, and obtaining the fireproof heat-preservation concrete wallboard after curing.
Comparative example 1.
In contrast to example 1, no low viscosity branched epoxy resin was prepared for this comparative example;
the preparation method of the fireproof heat-insulation concrete wallboard comprises the following steps of:
s1, preparing a fireproof heat-insulation concrete wallboard;
s11, dry-mixing 100 parts of sulphoaluminate cement and 20 parts of I-grade fly ash for 5min at a stirring speed of 60rpm, adding 25 parts of polypropylene fiber, and continuously mixing for 3min to obtain a concrete wallboard dry material;
s12, dissolving 0.5 part of a polycarboxylic acid water reducing agent in 42 parts of mixing water, uniformly stirring, mixing with concrete wallboard dry materials, stirring at the speed of 80rpm for 5min, and uniformly stirring to obtain concrete wallboard slurry;
s13, adding 1.4 parts of alkyl glucoside foaming agent and 0.1 part of polyoxyethylene lauryl ether foam stabilizer into 28 parts of mixing water, mixing and stirring at the speed of 1200rpm for 5min, adding into the concrete wallboard slurry, continuously stirring uniformly at the speed of 150rpm, placing the slurry into a mold, curing and forming, wherein the curing temperature is 65 ℃, the curing humidity is 75%, and the curing time is 48h, and obtaining the fireproof heat-preservation concrete wallboard after curing.
Comparative example 2.
Compared with example 1, the comparative example does not add a foam stabilizer;
the preparation method of the fireproof heat-insulation concrete wallboard comprises the following steps:
s1, preparing low-viscosity branched epoxy resin;
mixing 0.8 part of glycerol triglycidyl ether and 1.1 parts of ethylene glycol in parts by mole, adding 0.04 part of solid acid catalyst TP3 under the protection of nitrogen atmosphere, uniformly stirring, heating to 140 ℃, performing reflux reaction for 8 hours, and evaporating at 60 ℃ in vacuum until constant weight to obtain low-viscosity branched epoxy resin;
s2, preparing a fireproof heat-insulation concrete wallboard;
s21, dry-mixing 100 parts of sulphoaluminate cement and 20 parts of I-grade fly ash for 5min at a stirring speed of 60rpm, adding 25 parts of polypropylene fiber, and continuously mixing for 3min to obtain a concrete wallboard dry material;
s22, dissolving 0.5 part of a polycarboxylic acid water reducing agent in 42 parts of mixing water, uniformly stirring, mixing with a concrete wallboard dry material, stirring at the speed of 80rpm for 5min, and uniformly stirring to obtain concrete wallboard slurry;
s23, adding 1.4 parts of alkyl glucoside foaming agent, 0.1 part of polyoxyethylene lauryl ether foam stabilizer and 4 parts of low-viscosity branched epoxy resin into 28 parts of mixing water, mixing and stirring at 1200rpm for 5min, adding into the concrete wallboard slurry, continuing to stir uniformly at 150rpm, adding 3.5 parts of ketimine curing agent, mixing uniformly, placing the slurry into a mold, curing and forming, wherein the curing temperature is 65 ℃, the curing humidity is 75%, the curing time is 48h, and obtaining the fireproof heat-preservation concrete wallboard after curing.
And (3) detection: the products of examples 1-8 and comparative examples 1-2 were prepared as wallboards having a thickness of 50mm and the thermal conductivity of examples 1-8 and comparative examples 1-2 were tested according to GB/T10294-2008; detecting the water content according to GB/T23451-2009; the results of the measurements are given in the following table:
finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a fire prevention heat preservation concrete wallboard which characterized in that: the fireproof heat-insulation concrete wallboard comprises the following components in parts by weight: 100-130 parts of cement, 25-40 parts of reinforcing fiber, 20-40 parts of fly ash, 1.4-3.1 parts of foaming agent, 0.1-0.9 part of foam stabilizer, 0.5-2 parts of water reducing agent, 4-10 parts of low-viscosity branched epoxy resin, 3.5-7 parts of curing agent and 70-90 parts of mixing water.
2. A fire-resistant thermal insulation concrete wall panel according to claim 1, characterized in that: the cement is sulphoaluminate cement; the reinforced fiber is any one of glass fiber and polypropylene fiber; the fly ash is any one of class I fly ash and class II fly ash.
3. A fire-resistant thermal insulation concrete wall panel according to claim 1, characterized in that: the foaming agent is any one or more of alkyl glucoside, alkyl sulfonate and alkyl sulfate; the foam stabilizer is an alcohol nonionic surfactant; the water reducing agent is one or more of a naphthalene water reducing agent and a polyacid water reducing agent.
4. A fire-resistant thermal insulation concrete wall panel according to claim 1, characterized in that: the curing agent is a ketimine curing agent.
5. The preparation method of the fireproof heat-insulation concrete wallboard is characterized by comprising the following steps of:
s1, preparing low-viscosity branched epoxy resin;
mixing glycerol triglycidyl ether with ethylene glycol, adding a catalyst, stirring uniformly, heating to 140-150 ℃, and performing reflux reaction for 8-12h to obtain low-viscosity branched epoxy resin under the protection of nitrogen;
s2, preparing a fireproof heat-insulation concrete wallboard;
s21, dry-mixing cement and fly ash for 5-10min, adding reinforcing fiber, and continuously mixing for 3-5min to obtain a concrete wallboard dry material;
s22, dissolving a water reducing agent in mixing water with the total amount of 60-70%, uniformly stirring, mixing with a concrete wallboard dry material, and uniformly mixing to obtain concrete wallboard slurry;
s23, adding a foaming agent, a foam stabilizer and low-viscosity branched epoxy resin into the residual mixing water, mixing, stirring and mixing at the speed of 1200-1500rpm for 5-8min, adding the mixture into the concrete wallboard slurry, continuously stirring uniformly, adding a curing agent, stirring uniformly, placing the slurry into a mold for curing and forming, and obtaining the fireproof heat-preservation concrete wallboard after curing.
6. The method for preparing the fireproof heat-insulation concrete wallboard according to claim 5, characterized in that: in the step S1, the molar ratio of the glycerol triglycidyl ether, the glycol and the catalyst is (0.8-1): (1.1-1.3): (0.04-0.06).
7. The method for preparing the fireproof heat-insulation concrete wallboard according to claim 5, characterized in that: in step S1, the catalyst is a solid acid catalyst.
8. The preparation method of the fireproof heat-insulation concrete wallboard as claimed in claim 5, characterized in that: in the step S23, during maintenance, the maintenance temperature is 65-80 ℃, the maintenance humidity is 75-95%, and the maintenance time is 48-72h.
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Application publication date: 20221129 |