CN112430058A - Magnesium-based heat-insulating fireproof material for buildings and preparation method thereof - Google Patents
Magnesium-based heat-insulating fireproof material for buildings and preparation method thereof Download PDFInfo
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- CN112430058A CN112430058A CN202011161003.5A CN202011161003A CN112430058A CN 112430058 A CN112430058 A CN 112430058A CN 202011161003 A CN202011161003 A CN 202011161003A CN 112430058 A CN112430058 A CN 112430058A
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- magnesium
- based heat
- fireproof material
- insulating
- insulating fireproof
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- 239000000463 material Substances 0.000 title claims abstract description 64
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000011777 magnesium Substances 0.000 title claims abstract description 49
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000654 additive Substances 0.000 claims abstract description 20
- 230000000996 additive effect Effects 0.000 claims abstract description 20
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 20
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 20
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 229910001629 magnesium chloride Inorganic materials 0.000 claims abstract description 16
- 239000010881 fly ash Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000002253 acid Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 37
- 239000000203 mixture Substances 0.000 claims description 21
- 239000012267 brine Substances 0.000 claims description 18
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 18
- 238000005303 weighing Methods 0.000 claims description 17
- 239000008247 solid mixture Substances 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- 239000003973 paint Substances 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 6
- 235000019739 Dicalciumphosphate Nutrition 0.000 claims description 5
- 239000001506 calcium phosphate Substances 0.000 claims description 5
- NEFBYIFKOOEVPA-UHFFFAOYSA-K dicalcium phosphate Chemical compound [Ca+2].[Ca+2].[O-]P([O-])([O-])=O NEFBYIFKOOEVPA-UHFFFAOYSA-K 0.000 claims description 5
- 229940038472 dicalcium phosphate Drugs 0.000 claims description 5
- 229910000390 dicalcium phosphate Inorganic materials 0.000 claims description 5
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 5
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 229940037003 alum Drugs 0.000 claims description 3
- 239000011790 ferrous sulphate Substances 0.000 claims description 3
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 3
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 3
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- 229920005552 sodium lignosulfonate Polymers 0.000 claims description 3
- -1 alum Chemical compound 0.000 claims description 2
- 229940032950 ferric sulfate Drugs 0.000 claims description 2
- 229960001781 ferrous sulfate Drugs 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 239000003112 inhibitor Substances 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 239000013078 crystal Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000002087 whitening effect Effects 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 229910052736 halogen Inorganic materials 0.000 abstract description 2
- 150000002367 halogens Chemical class 0.000 abstract description 2
- 239000004567 concrete Substances 0.000 description 6
- 239000012774 insulation material Substances 0.000 description 6
- 239000004566 building material Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 2
- 235000019341 magnesium sulphate Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- LWFBRHSTNWMMGN-UHFFFAOYSA-N 4-phenylpyrrolidin-1-ium-2-carboxylic acid;chloride Chemical compound Cl.C1NC(C(=O)O)CC1C1=CC=CC=C1 LWFBRHSTNWMMGN-UHFFFAOYSA-N 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 229920005551 calcium lignosulfonate Polymers 0.000 description 1
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
Classifications
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- 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
- C04B28/30—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 magnesium cements or similar cements
- C04B28/32—Magnesium oxychloride cements, e.g. Sorel cement
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
- C04B18/26—Wood, e.g. sawdust, wood shavings
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/14—Acids or salts thereof containing sulfur in the anion, e.g. sulfides
- C04B22/142—Sulfates
- C04B22/148—Aluminium-sulfate
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/14—Acids or salts thereof containing sulfur in the anion, e.g. sulfides
- C04B22/142—Sulfates
- C04B22/149—Iron-sulfates
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/16—Acids or salts thereof containing phosphorus in the anion, e.g. phosphates
-
- 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
- C04B24/16—Sulfur-containing compounds
- C04B24/18—Lignin sulfonic acid or derivatives thereof, e.g. sulfite lye
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
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- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
-
- 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
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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a magnesium-based heat-insulating fireproof material for buildings and a preparation method thereof. The magnesium-based heat-insulating fireproof material for the building takes magnesium oxide and magnesium chloride as main bodies, the material is light and high in hardness, the problems of halogen return, blooming and whitening of the material in the initial stage can be inhibited by adding an acid-proof agent, and the fly ash and the magnesium oxide are industrial product wastes, so that the waste utilization is realized when the magnesium-based heat-insulating fireproof material is used for the magnesium-based heat-insulating fireproof material, and the cost of the raw material is low; the finished product has good water resistance, is not easy to warp and deform, and does not have the expansion crack of a hardened body by adding the additive, and crystal water in the magnesium chloride material is wrapped by adding the additive, and the loss of the crystal water of the magnesium oxide is controlled by maintaining at constant temperature; the surface of the product is coated with the water-based fireproof coating, so that the overall performance of the product is further improved. Finally, the magnesium-based heat-insulating fireproof material which is good in water resistance, not easy to warp and deform, free of frosting and whitening, strong in corrosion resistance and strong in acid resistance is obtained, the preparation process is simple, and labor is saved in operation.
Description
Technical Field
The invention relates to the technical field of heat-insulating fireproof materials, in particular to a magnesium-based heat-insulating fireproof material for buildings and a preparation method thereof.
Background
As one of the support industries in China, the building material industry has the defects that the excess capacity and the laggard production mode become barriers in development. The problems of high energy consumption and high pollution in the field of building materials persist in China for many years, and the traditional building material production activities and building construction modes become heavy burdens in energy-saving and environment-friendly work. The heat insulation materials are mainly organic heat insulation materials and inorganic heat insulation materials, wherein the organic heat insulation boards in the organic heat insulation materials are widely used in the current heat insulation material market, but have poor protective performance, and particularly can generate toxic gas which is very unfavorable to the environment in the combustion process. The inorganic heat-insulating material has the good self-characteristics of no aging, no thermal expansion, no cold shrinkage, cracking resistance, falling resistance and the like. Compared with organic heat-insulating material, it has unique superiority, and can not be substituted in building material, and can save lots of material and its cost is low.
Most of the raw materials of the heat insulation materials in the current market are various, the cost of the product is increased invisibly, and the problem of operation deviation is easy to occur in the preparation process. The application number is 201410245971.2, and the name is an environment-friendly wall fireproof heat-insulation board and a preparation method. Discloses a fireproof heat-insulation board which is prepared from the raw materials of straw powder, guanyl urea phosphate, boric acid, magnesium oxide, magnesium chloride or magnesium sulfate, fly ash or diatomite, perlite powder or vermiculite powder, styrene-acrylic emulsion, calcium lignosulfonate and tap water. The preparation method comprises mixing various raw materials, adding magnesium chloride or magnesium sulfate, styrene-acrylic emulsion and tap water, stirring at room temperature, placing in a template, rolling, maintaining, and demolding.
The best refractory material on the market at present comprises magnesium oxide and fly ash, wherein the magnesium oxide has high refractory and insulating properties, the melting point is 2852 ℃, the boiling point is 3600 ℃, and the relative density is 3.58(25 ℃), has excellent thermal stability, is high-temperature resistant, compact, non-toxic and non-flammable, does not belong to dangerous chemicals, and is an ideal green energy storage building material. The main oxide composition of the fly ash is as follows: SiO 22、AL2O3、FeO、Fe2O3、CaO、TiO2、MgO、K2O、Na2O、SO3MnO and the like are used as admixtures of mortar or concrete, and fly ash is added into the concrete to replace part of cement or fine aggregate, so that the cost can be reduced, the workability of the concrete can be improved, the impermeability, gas resistance, sulfate resistance and chemical corrosion resistance can be improved, the hydration heat can be reduced, the high temperature resistance of the concrete can be improved, the particle separation and water precipitation phenomena can be reduced, the shrinkage and cracking of the concrete can be reduced, and the corrosion of stray current to reinforcing steel bars in the concrete can be inhibited.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a magnesium-based heat-insulating fireproof material for buildings and a preparation method thereof.
The invention relates to a technical scheme of a magnesium-based heat-insulating fireproof material for buildings, which comprises the following steps:
a magnesium-base insulating fire-proof material for building is prepared from magnesium oxide, magnesium chloride, additive, acid-proofing agent and water.
Further, the magnesium-based heat-insulating fireproof material is composed of the following raw materials in percentage by mass: 35-70% of magnesium oxide, 9-30% of magnesium chloride, 9-30% of additive, 2-10% of acid inhibitor and 8-35% of water.
Further, the additive is a composition of two or more of fly ash, wood chips, silicon oxide and sodium lignosulphonate.
Further, the acid-proof agent is a composition of two or more of dicalcium phosphate, alum, ferric sulfate and ferrous sulfate.
The preparation method of the magnesium-based heat-insulating fireproof material for the building specifically comprises the following steps:
step one, preparing brine: weighing the magnesium oxide and the magnesium chloride in parts, grinding, filtering, screening, putting into a container, adding the water in parts, uniformly stirring for 10min, and preparing brine for later use;
step two, adding an additive: weighing the additive in the parts by weight, adding the additive into the brine prepared in the step one, and continuously stirring for 10-20 min to prepare a semi-finished magnesium-based heat-insulating fireproof material for later use;
step three, adding an acid-proof agent: weighing the acid-proof agent in the parts by weight, adding the acid-proof agent into the semi-finished magnesium-based heat-insulating fireproof material in the step two, and continuously stirring for 10-20 min to uniformly mix all the materials for later use;
step four, preparing a mould: pouring the uniform mixture prepared in the third step into a prepared mould, naturally standing for 24 hours, and solidifying for later use;
putting the solidified uniform mixture obtained in the step four and the mould into a constant-temperature drying oven, and maintaining the temperature at 50-60 ℃ for 24 hours;
and step six, removing the mold from the solid mixture cured in the step five, carrying out cutting and polishing treatment, then uniformly spraying the fireproof water-based paint on the surface of the solid mixture, and naturally airing to finally obtain the magnesium-based fireproof material.
Further, the number of the filter meshes in the step one is 10 meshes, and the stirring speed is 300 r/min.
Further, the stirring speed in the second step is 300 r/min.
Further, the stirring speed in the third step is 500 r/min.
Further, the spraying thickness in the sixth step is controlled to be 2 mm.
Compared with the prior art, the invention has the following beneficial effects:
the magnesium-based heat-insulating fireproof material for the building takes magnesium oxide and magnesium chloride as main bodies, the material is light and high in hardness, the problems of halogen return, blooming and whitening of the material in the initial stage can be inhibited by adding an acid-proof agent, and the fly ash and the magnesium oxide are industrial product wastes, so that the waste utilization is realized when the magnesium-based heat-insulating fireproof material is used for the magnesium-based heat-insulating fireproof material, and the cost of the raw material is low; the finished product has good water resistance, is not easy to warp and deform, and does not have the expansion crack of a hardened body by adding the additive, and crystal water in the magnesium chloride material is wrapped by adding the additive, and the loss of the crystal water of the magnesium oxide is controlled by maintaining at constant temperature; the surface of the product is coated with the water-based fireproof coating, so that the overall performance of the product is further improved. Finally, the magnesium-based heat-insulating fireproof material which is good in water resistance, not easy to warp and deform, free of frosting and whitening, strong in corrosion resistance and strong in acid resistance is obtained, the preparation process is simple, and labor is saved in operation.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Example 1
A magnesium-based heat-insulating fireproof material for buildings and a preparation method thereof specifically comprise the following steps:
step one, preparing brine: weighing 35g of magnesium oxide and 30g of magnesium chloride, grinding, screening by a 10-mesh screen, putting into a container, adding 8g of water, uniformly stirring at a stirring speed of 300r/min for 10min, and preparing brine for later use;
step two, adding an additive: weighing 20g of fly ash and 5g of sawdust, adding into the brine prepared in the step one, and continuously stirring for 20min at a stirring speed of 300r/min to prepare a semi-finished magnesium-based heat-insulating fireproof material for later use;
step three, adding an acid-proof agent: weighing 1g of dicalcium phosphate and 1g of ferrous sulfate, adding into the semi-finished magnesium-based heat-insulating fireproof material obtained in the second step, and continuously stirring for 20min at a stirring speed of 500r/min to uniformly mix all the materials for later use;
step four, preparing a mould: pouring the uniform mixture prepared in the third step into a prepared mould, naturally standing for 24 hours, and solidifying for later use;
putting the solidified uniform mixture obtained in the step four and the mould into a constant-temperature drying oven, maintaining the temperature at 60 ℃ for 24 hours;
and step six, removing the mold from the solid mixture cured in the step five, carrying out cutting and polishing treatment, then uniformly spraying the fireproof water-based paint on the surface of the solid mixture, controlling the spraying thickness to be 2mm, and naturally airing to finally obtain the magnesium-based fireproof material.
Example 2
A magnesium-based heat-insulating fireproof material for buildings and a preparation method thereof specifically comprise the following steps:
step one, preparing brine: weighing 70g of magnesium oxide and 9g of magnesium chloride in parts by weight, grinding, screening by a 10-mesh sieve, putting into a container, adding 9g of water, uniformly stirring at a stirring speed of 300r/min for 10min, and preparing brine for later use;
step two, adding an additive: weighing 6g of fly ash and 3g of sawdust, adding into the brine prepared in the step one, and continuously stirring for 18min at a stirring speed of 300r/min to prepare a semi-finished magnesium-based heat-insulating fireproof material for later use;
step three, adding an acid-proof agent: 2g of dicalcium phosphate and 1g of ferric sulfate are weighed and added into the semi-finished product of the magnesium-based heat-insulating fireproof material obtained in the second step, and stirring is continued for 18min at a stirring speed of 500r/min, so that all the materials are uniformly mixed for later use;
step four, preparing a mould: pouring the uniform mixture prepared in the third step into a prepared mould, naturally standing for 24 hours, and solidifying for later use;
putting the solidified uniform mixture obtained in the step four and the mould into a constant-temperature drying oven, maintaining the temperature at 55 ℃ for 24 hours;
and step six, removing the mold from the solid mixture cured in the step five, carrying out cutting and polishing treatment, then uniformly spraying the fireproof water-based paint on the surface of the solid mixture, controlling the spraying thickness to be 2mm, and naturally airing to finally obtain the magnesium-based fireproof material.
Example 3
A magnesium-based heat-insulating fireproof material for buildings and a preparation method thereof specifically comprise the following steps:
step one, preparing brine: weighing 40g of magnesium oxide and 14g of magnesium chloride in parts by weight, grinding, screening by a 10-mesh screen, putting into a container, adding 10g of water, uniformly stirring at a stirring speed of 300r/min for 10min, and preparing brine for later use;
step two, adding an additive: weighing 25g of sawdust and 5g of silicon oxide, adding into the brine prepared in the step one, and continuously stirring for 15min at a stirring speed of 300r/min to prepare a magnesium-based heat-insulating fireproof material semi-finished product for later use;
step three, adding an acid-proof agent: weighing 3g of alum and 3g of ferric sulfate, adding into the semi-finished magnesium-based heat-insulating fireproof material obtained in the second step, and continuously stirring for 15min at a stirring speed of 500r/min, so that all the materials are uniformly mixed for later use;
step four, preparing a mould: pouring the uniform mixture prepared in the third step into a prepared mould, naturally standing for 24 hours, and solidifying for later use;
putting the solidified uniform mixture obtained in the step four and the mould into a constant-temperature drying box, maintaining the temperature at 58 ℃ for 24 hours;
and step six, removing the mold from the solid mixture cured in the step five, carrying out cutting and polishing treatment, then uniformly spraying the fireproof water-based paint on the surface of the solid mixture, controlling the spraying thickness to be 2mm, and naturally airing to finally obtain the magnesium-based fireproof material.
Example 4
A magnesium-based heat-insulating fireproof material for buildings and a preparation method thereof specifically comprise the following steps:
step one, preparing brine: weighing 37g of magnesium oxide and 9g of magnesium chloride in parts by weight, grinding, screening by a 10-mesh sieve, putting into a container, adding 35g of water, uniformly stirring at a stirring speed of 300r/min for 10min, and preparing brine for later use;
step two, adding an additive: weighing 4g of fly ash, 3g of sawdust and 2g of sodium lignosulfonate, adding into the brine prepared in the step one, and continuously stirring for 10min at a stirring speed of 300r/min to prepare a semi-finished magnesium-based heat-insulating fireproof material for later use;
step three, adding an acid-proof agent: weighing 4.5g of dicalcium phosphate and 5.5g of ferric sulfate, adding into the semi-finished magnesium-based heat-insulating fireproof material obtained in the second step, and continuously stirring for 10min at a stirring speed of 500r/min so as to uniformly mix all the materials for later use;
step four, preparing a mould: pouring the uniform mixture prepared in the third step into a prepared mould, naturally standing for 24 hours, and solidifying for later use;
putting the solidified uniform mixture obtained in the step four and the mould into a constant-temperature drying oven, keeping the temperature at 50 ℃, and maintaining for 24 hours;
and step six, removing the mold from the solid mixture cured in the step five, carrying out cutting and polishing treatment, then uniformly spraying the fireproof water-based paint on the surface of the solid mixture, controlling the spraying thickness to be 2mm, and naturally airing to finally obtain the magnesium-based fireproof material.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The magnesium-based heat-insulating fireproof material for the building is characterized in that: the magnesium-based heat-insulating fireproof material consists of magnesium oxide, magnesium chloride, an additive, an acid-proofing agent and water.
2. The magnesium-based heat-insulating and fireproof material for the building as claimed in claim 1, wherein: the magnesium-based heat-insulating fireproof material is composed of the following raw materials in percentage by mass: 35-70% of magnesium oxide, 9-30% of magnesium chloride, 9-30% of additive, 2-10% of acid inhibitor and 8-35% of water.
3. The magnesium-based heat-insulating and fireproof material for the building as claimed in claim 1 or 2, wherein: the additive is a composition of two or more of fly ash, wood chips, silicon oxide and sodium lignosulphonate.
4. The magnesium-based heat-insulating and fireproof material for the building as claimed in claim 1 or 2, wherein: the acid-proof agent is a composition of two or more of dicalcium phosphate, alum, ferric sulfate and ferrous sulfate.
5. A preparation method of magnesium-based heat-insulating fireproof material for buildings is characterized by comprising the following steps: the method specifically comprises the following steps:
step one, preparing brine: weighing the magnesium oxide and the magnesium chloride in parts, grinding, filtering, screening, putting into a container, adding the water in parts, uniformly stirring for 10min, and preparing brine for later use;
step two, adding an additive: weighing the additive in the parts by weight, adding the additive into the brine prepared in the step one, and continuously stirring for 10-20 min to prepare a semi-finished magnesium-based heat-insulating fireproof material for later use;
step three, adding an acid-proof agent: weighing the acid-proof agent in the parts by weight, adding the acid-proof agent into the semi-finished magnesium-based heat-insulating fireproof material in the step two, and continuously stirring for 10-20 min to uniformly mix all the materials for later use;
step four, preparing a mould: pouring the uniform mixture prepared in the third step into a prepared mould, naturally standing for 24 hours, and solidifying for later use;
putting the solidified uniform mixture obtained in the step four and the mould into a constant-temperature drying oven, and maintaining the temperature at 50-60 ℃ for 24 hours;
and step six, removing the mold from the solid mixture cured in the step five, carrying out cutting and polishing treatment, then uniformly spraying the fireproof water-based paint on the surface of the solid mixture, and naturally airing to finally obtain the magnesium-based fireproof material.
6. The preparation method of the magnesium-based heat-insulating fireproof material for the building as claimed in claim 5, wherein: the number of the filter meshes in the step one is 10 meshes, and the stirring speed is 300 r/min.
7. The preparation method of the magnesium-based heat-insulating fireproof material for the building as claimed in claim 5, wherein: and the stirring speed in the second step is 300 r/min.
8. The preparation method of the magnesium-based heat-insulating fireproof material for the building as claimed in claim 5, wherein: the stirring speed in the third step is 500 r/min.
9. The preparation method of the magnesium-based heat-insulating fireproof material for the building as claimed in claim 5, wherein: and the spraying thickness in the sixth step is controlled to be 2 mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7384342B1 (en) | 2022-10-12 | 2023-11-21 | 中建材科創新技術研究院（山東）有限公司 | Manufacturing equipment and method for airgel heat-retaining mortar for high-temperature firing furnaces |
-
2020
- 2020-10-27 CN CN202011161003.5A patent/CN112430058A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7384342B1 (en) | 2022-10-12 | 2023-11-21 | 中建材科創新技術研究院（山東）有限公司 | Manufacturing equipment and method for airgel heat-retaining mortar for high-temperature firing furnaces |
| JP2024057578A (en) * | 2022-10-12 | 2024-04-24 | 中建材科創新技術研究院（山東）有限公司 | Aerogel thermal mortar production apparatus for high temperature firing furnace and process therefor |
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