CN104961403B - Composite flame-retardant building thermal insulation material and preparation method thereof - Google Patents
Composite flame-retardant building thermal insulation material and preparation method thereof Download PDFInfo
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- CN104961403B CN104961403B CN201510309162.8A CN201510309162A CN104961403B CN 104961403 B CN104961403 B CN 104961403B CN 201510309162 A CN201510309162 A CN 201510309162A CN 104961403 B CN104961403 B CN 104961403B
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- 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 27
- 239000003063 flame retardant Substances 0.000 title claims abstract description 27
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 239000012774 insulation material Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000839 emulsion Substances 0.000 claims abstract description 25
- 239000004593 Epoxy Substances 0.000 claims abstract description 15
- 239000000178 monomer Substances 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 239000000835 fiber Substances 0.000 claims abstract description 12
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 11
- 239000011398 Portland cement Substances 0.000 claims abstract description 9
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 9
- 239000000440 bentonite Substances 0.000 claims abstract description 9
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 9
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010881 fly ash Substances 0.000 claims abstract description 9
- 239000010440 gypsum Substances 0.000 claims abstract description 9
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 9
- 239000005871 repellent Substances 0.000 claims abstract description 9
- 230000002940 repellent Effects 0.000 claims abstract description 9
- 229920003086 cellulose ether Polymers 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 10
- 239000004794 expanded polystyrene Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000003999 initiator Substances 0.000 claims description 8
- 229920006327 polystyrene foam Polymers 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 239000004567 concrete Substances 0.000 claims description 7
- -1 polypropylene Polymers 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 239000003995 emulsifying agent Substances 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 4
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 4
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical group [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 4
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 2
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 2
- 229910052681 coesite Inorganic materials 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 229910052906 cristobalite Inorganic materials 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 238000007720 emulsion polymerization reaction Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- OMNKZBIFPJNNIO-UHFFFAOYSA-N n-(2-methyl-4-oxopentan-2-yl)prop-2-enamide Chemical compound CC(=O)CC(C)(C)NC(=O)C=C OMNKZBIFPJNNIO-UHFFFAOYSA-N 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 229910052682 stishovite Inorganic materials 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 229910052905 tridymite Inorganic materials 0.000 claims description 2
- 239000011489 building insulation material Substances 0.000 claims 2
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims 2
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims 2
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims 2
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims 2
- 239000002994 raw material Substances 0.000 claims 2
- 238000000034 method Methods 0.000 claims 1
- 239000011810 insulating material Substances 0.000 abstract description 6
- 229920006389 polyphenyl polymer Polymers 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 229910010272 inorganic material Inorganic materials 0.000 description 5
- 239000011147 inorganic material Substances 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 229920000609 methyl cellulose Polymers 0.000 description 4
- 239000001923 methylcellulose Substances 0.000 description 4
- 235000010981 methylcellulose Nutrition 0.000 description 4
- 239000011368 organic material Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000012258 stirred mixture Substances 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- 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
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Building Environments (AREA)
Abstract
The invention relates to a composite flame-retardant building thermal insulation material and a preparation method thereof, wherein the composite flame-retardant building thermal insulation material comprises the following components: 425 ordinary portland cement, II-grade fly ash, silica fume, gypsum, bentonite, epoxy modified hybrid emulsion, fiber, cellulose ether, a water repellent, an LEE monomer type flame retardant, an expanding agent, polyphenyl particles and a KH550 silane coupling agent. The heat insulating material of the present invention has low heat conductivity, no combustion, high water resistance, light weight and high mechanical strength, and is suitable for heat insulating building wall.
Description
Technical Field
The invention relates to the field of heat-insulating building materials, in particular to a composite flame-retardant building heat-insulating material and a preparation method thereof.
Background
At present, the organic materials in the domestic building heat-insulating materials account for the largest proportion, such as expanded polystyrene boards, extruded polystyrene boards, polyurethane, phenolic resin foaming materials and the like, and in addition, the inorganic materials such as foamed cement boards, mineral (rock) wool, glass wool, inorganic heat-insulating mortar and the like. The composite thermal insulation material is a thermal insulation material which is researched more in recent years, and organic and inorganic materials are compounded, and mainly glue powder polyphenyl particle thermal insulation mortar and the like are adopted.
The organic material has a prominent problem of poor fire resistance, and the fire safety of the external wall insulation material must be further improved from several domestic building fires related to the external wall insulation material in recent years. In addition, organic materials have the disadvantages of low strength, short service life, and the like.
Although the inorganic material has the characteristic of non-combustibility, the inorganic material has poor heat insulation performance and waterproof performance and large specific gravity. Therefore, the composite thermal insulation material is a better choice at present. However, some current composite thermal insulation materials still cannot meet the fire protection requirement of A1 grade, and the thermal conductivity coefficient is also higher.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an organic and inorganic composite thermal insulation material which replaces inflammable organic thermal insulation materials and inorganic thermal insulation materials with high thermal conductivity.
The technical scheme adopted by the invention is as follows: the composite flame-retardant building heat-insulating material comprises the following components in percentage by mass: 425 ordinary portland cement 15-20%, II-grade fly ash 10-15%, silica fume 15-20%, gypsum 10-15%, bentonite 10-15%, epoxy modified hybrid emulsion 10-20%, fiber 0.25-0.6%, cellulose ether 0.1-0.3%, water repellent 2-8%, LEE monomer type flame retardant 10-20%, expanding agent 5-10%, polyphenyl granule 3-8%, KH550 silane coupling agent 0.3-0.6%.
Optimizing; the silica fume is white or light gray powder, SiO2The mass fraction of (B) is more than 85 percent, and the density is 200-250kg/m3The specific surface area is 20-28m2/g。
Optimizing; the polystyrene particles are expanded polystyrene foam particles, the particle size is 2-5mm, and the density is 6-15kg/m3。
Optimizing; the fiber is polypropylene fiber, bundle-shaped, the monofilament diameter is 26-62 μm, the length is 20mm, and the tensile strength is 350-450 MPa.
Optimizing; the cellulose ether is hydrocarbon propyl methyl cellulose ether.
Optimizing; the expanding agent is a solution prepared by dissolving and diluting a concrete expanding agent by 49 times with water.
Optimizing; the epoxy modified hybrid emulsion is prepared from the following substances in parts by weight: 134 parts of monomer, 1.2 parts of initiator, 4.62 parts of emulsifier, 20 parts of epoxy resin and 140 parts of deionized water, wherein the monomer comprises the following components in parts by mass: styrene, butyl acrylate, methyl methacrylate, methacrylic acid, diacetone acrylamide (40: 55: 30: 5: 4);
the preparation method of the epoxy modified hybrid emulsion comprises the following steps:
1) preparation of pre-emulsion: adding 140 parts of deionized water and 4.62 parts of emulsifier into a reaction bottle, heating to 40 ℃, stirring at 180rpm for 30min, simultaneously dripping 134 parts of monomer into the reaction bottle within 30min, and continuously stirring for 15min after dripping is finished to obtain epoxy-acrylic acid pre-emulsion;
2) seed emulsion polymerization: adding the 20% epoxy-acrylic acid pre-emulsion into a reaction bottle, heating to 79-81 ℃, adding 0.24 part of initiator, forming a seed emulsion after the system shows slight blue, continuously keeping the reaction for 1h, then dripping the rest 80% epoxy-acrylic acid pre-emulsion and 0.96 part of initiator within 3.5-4 h, gradually dripping 20 parts of epoxy resin dissolved by acetone after dripping is finished, heating to 84-86 ℃, keeping the temperature for 1h, then cooling, adjusting the pH value to 7-8, filtering and discharging to obtain the epoxy modified hybrid emulsion.
Optimizing; the initiator is ammonium persulfate.
Optimizing; the emulsifier is a mixture of sodium dodecyl sulfate and nonylphenol polyoxyethylene ether, wherein the mass ratio of the sodium dodecyl sulfate to the nonylphenol polyoxyethylene ether is 1: 2.
The invention provides a preparation method of a composite flame-retardant building thermal insulation material, which comprises the following steps:
1) mixing: weighing the inorganic cementing material according to the mass percentage: 425 placing ordinary portland cement, II-grade fly ash, silica fume, gypsum and bentonite into a stirrer, adding water, stirring for 5-10min at 180rpm, adding an epoxy modified hybrid emulsion, a water repellent, fibers, cellulose ether, an LEE monomer type flame retardant, an expanding agent and a KH550 silane coupling agent, stirring for 10-15min at 180rpm, and then adding polyphenyl granules and continuously stirring for 15-20 min;
2) molding: putting the mixture stirred in the step 1) into a mould, compacting and leveling, and demoulding after 24 hours at 25 ℃;
3) and (5) maintenance: maintaining at 21-25 deg.C and 45-75% relative humidity for 28 days.
Has the advantages that: the building heat-insulating material can reach A1-grade fireproof standard, has a heat conductivity coefficient which is obviously superior to that of inorganic materials and is not more than 0.56 w/(m.k), and has a volume weight which is less than that of other composite heat-insulating materials and can reach 200kg/m3The mechanical properties meet the requirements of practical application.
Detailed Description
The present invention will be further described with reference to a few specific examples thereof, but the present invention is not limited thereto.
Example 1
Weighing inorganic cementing materials: 425 ordinary portland cement 180g, II-grade fly ash 150g, silica fume 170g, gypsum 130g and bentonite 100g, placing the materials into a stirrer, adding water, stirring for 5min at 180rpm, adding water accounting for 110% of the inorganic cementing material, then adding epoxy modified hybrid emulsion 100g, polypropylene fiber 3g, hydrocarbon propyl methyl cellulose ether 2g, water repellent 50g, LEE monomer type flame retardant 150g, concrete expanding agent 80g and KH550 silane coupling agent 4g, stirring for 10min at 180rpm, then adding expanded polystyrene foam particles 33.6g, continuously stirring for 20min, placing the stirred mixture into a mould, compacting and leveling, and demoulding after 25 ℃ and 24 h. Then maintaining for 28 days at 21-25 deg.C and 45-75% relative humidity.
The performance of the composite flame-retardant building thermal insulation material of the embodiment is as follows:
(1) volume weight: 186kg/m3(ii) a (2) Water absorption: 0.23 percent; (3) 28-day compressive strength: 0.45 Mpa; (4) coefficient of thermal conductivity: 0.48 w/(m.k).
Example 2
Weighing inorganic cementing materials: 425 ordinary portland cement 200g, II-grade fly ash 150g, silica fume 180g, gypsum 130g and bentonite 100g, placing the materials into a stirrer, adding water, stirring for 10min at 180rpm, adding water accounting for 110% of the inorganic cementing material, then adding epoxy modified hybrid emulsion 120g, polypropylene fiber 4g, hydrocarbon propyl methyl cellulose ether 3.5g, water repellent 50g, LEE monomer type flame retardant 150g, concrete expanding agent 90g and KH550 silane coupling agent 4g, stirring for 15min at 180rpm, then adding expanded polystyrene foam particles 36.4g, continuously stirring for 15min, placing the stirred mixture into a mould, compacting and leveling, and demoulding after 25 ℃ and 24 h. Then maintaining for 28 days at 21-25 deg.C and 45-75% relative humidity.
The performance of the composite flame-retardant building thermal insulation material of the embodiment is as follows:
(1) volume weight: 182kg/m3(ii) a (2) Water absorption: 0.21 percent; (3) 28-day compressive strength: 0.43 Mpa; (4) coefficient of thermal conductivity: 0.43 w/(m.k).
Example 3
Weighing inorganic cementing materials: 425 g of ordinary portland cement, 140g of II-grade fly ash, 165g of silica fume, 140g of gypsum and 100g of bentonite, adding water into a stirrer, stirring for 5min at 180rpm, adding 110g of epoxy modified hybrid emulsion, 4g of polypropylene fiber, 3.5g of hydrocarbon propyl methyl cellulose ether, 50g of water repellent, 150g of LEE monomer type flame retardant, 60g of concrete expanding agent and 4g of KH550 silane coupling agent, stirring for 15min at 180rpm, adding 36.4g of expanded polystyrene foam particles, continuously stirring for 20min, putting the stirred mixture into a mould, compacting and leveling, and demoulding after 25 ℃ and 24 h. Then maintaining for 28 days at 21-25 deg.C and 45-75% relative humidity.
The performance of the composite flame-retardant building thermal insulation material of the embodiment is as follows:
(1) volume weight: 194kg/m3(ii) a (2) Water absorption: 0.25 percent; (3) 28-day compressive strength: 0.52 MPa; (4) coefficient of thermal conductivity: 0.48 w/(m.k).
Claims (8)
1. The composite flame-retardant building thermal insulation material is characterized by comprising the following raw materials in parts by weight: 425 ordinary portland cement 180g, II-grade fly ash 150g, silica fume 170g, gypsum 130g, bentonite 100g, epoxy modified hybrid emulsion 100g, polypropylene fiber 3g, hydroxypropyl methyl cellulose ether 2g, water repellent 50g, LEE monomer type flame retardant 150g, concrete expanding agent 80g, expanded polystyrene foam particles 33.6g, and KH550 silane coupling agent 4 g.
2. The composite flame-retardant building thermal insulation material is characterized by comprising the following raw materials in parts by weight: 425 ordinary portland cement 200g, II-grade fly ash 150g, silica fume 180g, gypsum 130g, bentonite 100g, epoxy modified hybrid emulsion 120g, polypropylene fiber 4g, hydroxypropyl methyl cellulose ether 3.5g, water repellent 50g, LEE monomer type flame retardant 150g, concrete expanding agent 90g, expanded polystyrene foam particles 36.4g, and KH550 silane coupling agent 4 g.
3. The method of claim 1 or 2The composite flame-retardant building thermal insulation material is characterized in that: the silica fume is white or light gray powder, SiO2The mass fraction of (B) is more than 85 percent, and the density is 200-250kg/m3The specific surface area is 20-28m2/g，
The expanded polystyrene foam particles have the particle size of 2-5mm and the density of 6-15kg/m3；
The polypropylene fiber is in a bundle shape, the monofilament diameter is 26-62 μm, the length is 20mm, and the tensile strength is 350-450 MPa.
4. The composite flame-retardant building insulation material according to claim 1 or 2, characterized in that: the concrete expanding agent is a solution dissolved and diluted 49 times by water.
5. The composite flame-retardant building insulation material according to claim 1 or 2, characterized in that: the epoxy modified hybrid emulsion is prepared from the following substances in parts by weight: 134 parts of monomer, 1.2 parts of initiator, 4.62 parts of emulsifier, 20 parts of epoxy resin and 140 parts of deionized water, wherein the monomer comprises the following components in parts by mass: styrene, butyl acrylate, methyl methacrylate, methacrylic acid, diacetone acrylamide (40: 55: 30: 5: 4);
the preparation method of the epoxy modified hybrid emulsion comprises the following steps:
1) preparation of pre-emulsion: adding 140 parts of deionized water and 4.62 parts of emulsifier into a reaction bottle, heating to 40 ℃, stirring at 180rpm for 30min, simultaneously dripping 134 parts of monomer into the reaction bottle within 30min, and continuously stirring for 15min after dripping is finished to obtain epoxy-acrylic acid pre-emulsion;
2) seed emulsion polymerization: adding the 20% epoxy-acrylic acid pre-emulsion into a reaction bottle, heating to 79-81 ℃, adding 0.24 part of initiator, forming a seed emulsion after the system shows slight blue, continuously keeping the reaction for 1h, then dripping the rest 80% epoxy-acrylic acid pre-emulsion and 0.96 part of initiator within 3.5-4 h, gradually dripping 20 parts of epoxy resin dissolved by acetone after dripping is finished, heating to 84-86 ℃, keeping the temperature for 1h, then cooling, adjusting the pH value to 7-8, filtering and discharging to obtain the epoxy modified hybrid emulsion.
6. The composite flame-retardant building thermal insulation material as claimed in claim 5, wherein: the initiator is ammonium persulfate.
7. The composite flame-retardant building thermal insulation material as claimed in claim 5, wherein: the emulsifier is a mixture of sodium dodecyl sulfate and nonylphenol polyoxyethylene ether, wherein the mass ratio of the sodium dodecyl sulfate to the nonylphenol polyoxyethylene ether is 1: 2.
8. A preparation method for preparing the composite flame-retardant building thermal insulation material as claimed in any one of claims 6 or 7, is characterized by comprising the following steps:
1) mixing: weighing the inorganic cementing materials according to the weight ratio: 425 placing ordinary portland cement, II-grade fly ash, silica fume, gypsum and bentonite into a stirrer, adding water, stirring for 5-10min at 180rpm, adding an epoxy modified hybrid emulsion, a water repellent, fibers, cellulose ether, an LEE monomer type flame retardant, an expanding agent and a KH550 silane coupling agent, stirring for 10-15min at 180rpm, and then adding expanded polystyrene foam particles and continuously stirring for 5-20 min;
2) molding: putting the mixture stirred in the step 1) into a mould, compacting and leveling, and demoulding after 24 hours at 25 ℃;
3) and (5) maintenance: maintaining at 21-25 deg.C and 45-75% relative humidity for 28 days.
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| CN110776301B (en) * | 2019-11-28 | 2021-12-14 | 席宗隆 | Microwave modified inorganic cementing material, preparation method and application thereof |
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|---|---|---|---|---|
| CN101229970A (en) * | 2007-01-23 | 2008-07-30 | 上海同表保温科技有限公司 | Exterior wall composite insulation heat-proof plastering material |
| CN103396077A (en) * | 2013-07-24 | 2013-11-20 | 安徽英柯建材有限公司 | Crack-resistant thermal insulation mortar |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441944A (en) * | 1981-12-31 | 1984-04-10 | Pmp Corporation | Building board composition and method of making same |
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2015
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101229970A (en) * | 2007-01-23 | 2008-07-30 | 上海同表保温科技有限公司 | Exterior wall composite insulation heat-proof plastering material |
| CN103396077A (en) * | 2013-07-24 | 2013-11-20 | 安徽英柯建材有限公司 | Crack-resistant thermal insulation mortar |
Non-Patent Citations (1)
| Title |
|---|
| 水性环氧改性丙烯酸红外热屏蔽土层材料的研究;李少香;《中国博士学位论文全文数据库工程科技I辑》;20091115(第11期);第32-34、41-54页 * |
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