CN114671706A - Thermal insulation coating based on inorganic plasticized microporous particulate material and application - Google Patents
Thermal insulation coating based on inorganic plasticized microporous particulate material and application Download PDFInfo
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- CN114671706A CN114671706A CN202210525735.0A CN202210525735A CN114671706A CN 114671706 A CN114671706 A CN 114671706A CN 202210525735 A CN202210525735 A CN 202210525735A CN 114671706 A CN114671706 A CN 114671706A
- Authority
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- China
- Prior art keywords
- inorganic
- particulate material
- cement
- microporous particulate
- plasticized
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- 239000011236 particulate material Substances 0.000 title claims abstract description 41
- 238000000576 coating method Methods 0.000 title claims abstract description 36
- 239000011248 coating agent Substances 0.000 title claims abstract description 34
- 238000009413 insulation Methods 0.000 title claims abstract description 7
- 239000004568 cement Substances 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000011230 binding agent Substances 0.000 claims abstract description 25
- 239000000126 substance Substances 0.000 claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 10
- 239000011256 inorganic filler Substances 0.000 claims abstract description 10
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000011449 brick Substances 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 31
- 239000006260 foam Substances 0.000 claims description 27
- 239000002245 particle Substances 0.000 claims description 24
- 239000004088 foaming agent Substances 0.000 claims description 16
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 15
- 239000011707 mineral Substances 0.000 claims description 15
- 239000000654 additive Substances 0.000 claims description 12
- 230000000996 additive effect Effects 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 9
- 239000003381 stabilizer Substances 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 235000019738 Limestone Nutrition 0.000 claims description 6
- 229910021536 Zeolite Inorganic materials 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 6
- IQYKECCCHDLEPX-UHFFFAOYSA-N chloro hypochlorite;magnesium Chemical compound [Mg].ClOCl IQYKECCCHDLEPX-UHFFFAOYSA-N 0.000 claims description 6
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 6
- 239000010881 fly ash Substances 0.000 claims description 6
- 239000006028 limestone Substances 0.000 claims description 6
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 claims description 6
- 239000004137 magnesium phosphate Substances 0.000 claims description 6
- 229960002261 magnesium phosphate Drugs 0.000 claims description 6
- 229910000157 magnesium phosphate Inorganic materials 0.000 claims description 6
- 235000010994 magnesium phosphates Nutrition 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 239000012744 reinforcing agent Substances 0.000 claims description 6
- 239000010457 zeolite Substances 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 150000004645 aluminates Chemical class 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 5
- 238000005187 foaming Methods 0.000 claims description 5
- 238000001238 wet grinding Methods 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 229920002748 Basalt fiber Polymers 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 3
- 239000011398 Portland cement Substances 0.000 claims description 3
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002518 antifoaming agent Substances 0.000 claims description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical class O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000007822 coupling agent Substances 0.000 claims description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- IPGANOYOHAODGA-UHFFFAOYSA-N dilithium;dimagnesium;dioxido(oxo)silane Chemical compound [Li+].[Li+].[Mg+2].[Mg+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O IPGANOYOHAODGA-UHFFFAOYSA-N 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
- 229930195729 fatty acid Natural products 0.000 claims description 3
- -1 fatty acid salt Chemical class 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002557 mineral fiber Substances 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 102000004169 proteins and genes Human genes 0.000 claims description 3
- 108090000623 proteins and genes Proteins 0.000 claims description 3
- 229910021487 silica fume Inorganic materials 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- 239000011863 silicon-based powder Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000004094 surface-active agent Substances 0.000 claims description 3
- 229920002994 synthetic fiber Polymers 0.000 claims description 3
- 239000012209 synthetic fiber Substances 0.000 claims description 3
- 239000008399 tap water Substances 0.000 claims description 3
- 235000020679 tap water Nutrition 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 239000004111 Potassium silicate Substances 0.000 claims description 2
- 239000004115 Sodium Silicate Substances 0.000 claims description 2
- 239000013590 bulk material Substances 0.000 claims description 2
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 claims description 2
- 229910052912 lithium silicate Inorganic materials 0.000 claims description 2
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 2
- 235000019353 potassium silicate Nutrition 0.000 claims description 2
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 2
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 239000000306 component Substances 0.000 claims 3
- 231100000252 nontoxic Toxicity 0.000 abstract 1
- 230000003000 nontoxic effect Effects 0.000 abstract 1
- 238000004321 preservation Methods 0.000 description 9
- 238000005265 energy consumption Methods 0.000 description 6
- 239000004965 Silica aerogel Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 239000000499 gel Substances 0.000 description 3
- 239000010451 perlite Substances 0.000 description 3
- 235000019362 perlite Nutrition 0.000 description 3
- 239000010455 vermiculite Substances 0.000 description 3
- 229910052902 vermiculite Inorganic materials 0.000 description 3
- 235000019354 vermiculite Nutrition 0.000 description 3
- 239000002585 base Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 239000004964 aerogel Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011325 microbead Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000002351 wastewater 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
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00508—Cement paints
-
- 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
- C04B2111/40—Porous or lightweight materials
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
-
- 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to the technical field of inorganic coatings, and particularly relates to an inorganic plasticized microporous particulate material-based heat-insulating coating and application thereof, wherein dry components of the heat-insulating coating comprise, by volume, 5-85% of an inorganic plasticized microporous particulate material, 10-40% of an inorganic binder, 3-50% of an inorganic filler, 0.1-1% of an inorganic or organic fiber, and 0.5-4% of an auxiliary agent. When in application, 55-65% of dry components and 30-50% of water are mixed and stirred uniformly by manpower or machinery at normal temperature, and then the mixture is coated on the outer surfaces of refractory brick enclosure walls, conveying pipelines, metal doors and metal facilities of various industrial kilns; the inner and outer surfaces of the cement-based exterior wall of the building and the roof are coated with a firm and closed thermal insulation coating. The heat-insulating coating based on the inorganic plasticized microporous particulate material is non-toxic and harmless, does not generate harmful substances at high temperature, is green, environment-friendly and pollution-free, and has wide raw material sources and low price.
Description
Technical Field
The invention belongs to the technical field of inorganic coatings, and particularly relates to an inorganic plasticized microporous particulate material-based thermal insulation coating and application thereof.
Background
With the development of science and technology and the increasing demand of human society for energy, the energy problem has become a serious obstacle restricting the progress of human society. The energy consumption of China mainly comprises three major blocks: traffic energy consumption, industrial energy consumption and building energy consumption. In the industrial field, facilities such as equipment, conveying pipelines, high-temperature kilns and the like running at high temperature lose huge energy due to the lagging heat insulation technology. The industrial facilities running at high temperature have the characteristic of irregular shapes, so the inorganic heat-insulating coating is an energy-saving and consumption-reducing product which is urgently needed in the industrial field. The inorganic heat-insulating coating can also be applied to roofs, interior and exterior walls in the field of buildings.
The main components of the inorganic heat-insulating coating are inorganic binder, heat-insulating component and auxiliary material. The traditional inorganic heat-insulating coating comprises vitrified micro-beads, expanded perlite, expanded vermiculite and the like, and the main defects of the heat-insulating composition are high water absorption and poor heat-insulating effect. Aiming at the requirements of heat preservation and energy conservation in the industrial field at present, the heat preservation components in the inorganic heat preservation coating which is being developed are silica aerogel and hollow glass beads, and the main defect of the heat preservation components is high price.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an inorganic plasticized microporous particulate material-based heat-insulating coating and application thereof, wherein the heat-insulating coating is coated on the outer surfaces of refractory brick enclosure walls, conveying pipelines, metal doors and metal facilities of various industrial kilns; the cement-based outer wall has the characteristics of no toxicity, no harm, no harmful substance generation at high temperature, environmental protection, no pollution, wide raw material source, low price and the like on the inner surface, the outer surface and the roof of the cement-based outer wall of the building.
In order to achieve the purpose, the invention adopts the technical scheme that:
an inorganic plasticized microporous particulate material-based heat-insulating coating is prepared from the following raw materials in parts by weight: 55-65% of dry component and 30-50% of water; the dry components consist of the following raw materials in parts by volume: 5-85% of inorganic plasticized microporous particulate material, 10-40% of inorganic binder, 3-50% of inorganic filler, 0.1-1% of inorganic or organic fiber and 0.5-4% of auxiliary agent.
Further, the inorganic plasticized microporous particulate material is prepared from an inorganic cementing material or an inorganic cementing material, mineral micro powder, a chemical additive, water, a foam stabilizer and foam as raw materials in parts by weight as follows: 100-200 parts of cement, 0-100 parts of mineral micro powder, 3-30 parts of chemical additive, 40-225 parts of water, 3-10 parts of foam stabilizer and 10-50 parts of foam; uniformly mixing the cement, the mineral micro powder, the chemical additive and the water according to the proportion, and preparing slurry through wet grinding; or according to the proportion, the cement, the mineral micro powder, the chemical additive and the water which are dry-milled to the particle size of less than 40 mu m are uniformly mixed to prepare slurry; and then mixing with a foam stabilizer and foam, carrying out injection molding, curing to form a block material with the pore diameter of 5-800 μm, and then cutting and crushing to prepare a bulk material with the diameter of 0.08-200 mm. The foam holes in the inorganic plasticized microporous particulate material are independent and closed, and the surface of the particulate material has hydrophilicity, but the inside of the foam holes does not have water inlet property.
Further, the cement is at least one of general portland cement, sulphoaluminate cement, aluminate cement, alkali-activated cementing material, magnesium phosphate cement and magnesium oxychloride cement; the particle size of particles in the slurry prepared by wet grinding is less than 40 mu m; the mineral micro powder is at least one of fly ash, limestone powder and natural zeolite powder, and the particle size of the mineral micro powder is less than 40 mu m; the chemical additive is prepared from a waterproof agent and a reinforcing agent according to a mass ratio of 10-50: 40-60 of a mixture; the water is city tap water; the foam stabilizer is at least one of magnesium aluminum silicate, magnesium lithium silicate, modified bentonite and high molecular polymer; the foam is prepared from a foaming agent and water in a mass ratio of 1: 30-50 of foaming liquid mixed in proportion, and foam prepared by a nitrogen or air compressor;
further, the waterproof agent is at least one of emulsified paraffin, higher fatty acid salt and organosilicon waterproof powder; the reinforcing agent is at least one of nano-scale silicon powder, nano-scale magnesium oxide, nano-scale silicon oxide, nano-scale aluminum oxide and nano-scale zinc oxide; the foaming agent is at least one of a surfactant foaming agent, a protein foaming agent and a composite foaming agent; the curing condition for preparing the blocky material of the inorganic plasticized microporous particulate material is that the blocky material is maintained for more than 14 days under the environment with the temperature of 5-40 ℃ and the relative humidity of more than 90 percent or is maintained for more than 2 hours-7 days at the temperature of 40-95 ℃.
Further, the dry density of the block material of the inorganic plasticized microporous particulate material is 80-600 kg/m3The compressive strength is 0.2-3.5 MPa, the volume water absorption is not more than 6%, and the heat conductivity is 0.030-0.12W/(mK).
Further, the inorganic binder is at least one of a siliceous inorganic binder, an alkali-activated cementitious material, a magnesium phosphate cementitious material, magnesium oxychloride cement, a silicate cementitious material, aluminate cement and sulphoaluminate cement, and the siliceous inorganic binder is at least one of silica sol, sodium silicate, potassium silicate and lithium silicate.
Further, the inorganic filler is at least one of fly ash, slag powder, silica fume, limestone powder, natural zeolite powder and calcined clay.
Further, the inorganic organic fiber is at least one of glass fiber, ceramic fiber, carbon fiber, basalt fiber, mineral fiber and synthetic fiber.
Further, the auxiliary agent is at least one of a dispersing agent, a defoaming agent or an air entraining agent, a coupling agent, a high molecular polymer and an inorganic gel.
The heat insulating paint based on inorganic plasticized microporous granular material is prepared through mixing dry components, water and normal temperature and painting the mixture onto the outer surface of refractory brick protecting wall, conveying pipeline, metal door and metal facility in industrial kiln or the inner and outer surfaces of cement-base outer wall and roof.
The invention has the following beneficial effects:
1. the product is an environment-friendly low-carbon product, and the heat-insulating components currently used in the inorganic heat-insulating coating can be classified into 6 types: vitrified micro bubbles, expanded perlite, expanded vermiculite, hollow glass micro bubbles, hollow ceramic micro bubbles, silicon aerogel and the first 5 types of heat preservation components form holes at high temperature (more than 700 ℃ or 1000 ℃), so the energy consumption is high and the pollution is large; silica aerogel is prepared by using a siliceous material as a raw material, forming sol-gel mainly by a chemical method, and drying by supercritical high-pressure drying equipment or by using a solvent to replace water in the silica gel at low temperature, and has the problems of large equipment investment or serious environmental pollution. The forming principle of the product hole is as follows: foaming liquid containing foaming agent is foamed by nitrogen or air press and introduced into cement slurry; because the cement in the cement slurry is wet-ground or dry-ground to particles smaller than 40 mu m, the setting time is short, namely, the independent foam is quickly set and solidified to form closed pores with micron-sized dimensions; the nanometer oxide is doped, so that the hole wall has certain strength to ensure the integrity of the hole; the waterproof agent is mixed in the cement paste, so that capillary pores of the hardened cement paste are blocked and water does not enter, the surfaces of particles of the product are hydrophilic, and water does not enter pores; in addition, the production process of the product has no waste water discharge (water of flushing equipment is reused after precipitation), no toxic gas discharge and no solid waste discharge (solid waste is made into other building products), and has environment-friendly performance; the product forms foam pores at normal temperature and low temperature of 5-95 ℃, has low energy consumption and is a low-carbon product.
2. The product has high cost performance; the silica aerogel with the best heat preservation effect at present has the internal pore diameter of particles of about 20 nm, the true density of the particles of 0.06-0.15 g/cm3, the thermal conductivity of the particles of 0.017-0.023W/(m.K) and the price of 200 per kilogram of 800 yuan RMB. The diameter of hollow glass bead particles is 5-100 mu m, the inner aperture of the particles is 2-50 mu m, the true density of the particles is 0.15-0.60 g/cm3 (the bulk density is 0.10-0.40 g/cm 3), the heat conductivity coefficient of the particles is 0.038-0.060W/(m.K), and the price is about 5000 yuan RMB per 1m3 (the bulk volume); the internal pore size of the product particles is 5-800 mu m, the true density of the particles is 0.08-0.60 g/cm3, the heat conductivity coefficient of the particles is 0.030-0.12W/(m.K), and the price is lower than 1000 yuan per 1m3 (stacking volume).
3. The product can be used in normal temperature and high temperature environment, the 6 types of heat preservation components (vitrified micro bubbles, expanded perlite, expanded vermiculite, hollow glass micro bubbles, hollow ceramic micro bubbles and silica aerogel) which are currently used in inorganic heat preservation paint can be used in normal temperature and high temperature environment, and the use environment temperature of the prepared inorganic heat preservation paint is determined by the properties and the mixing amount of the inorganic binder and the filler.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
An inorganic plasticized microporous particulate material-based heat-insulating coating is prepared from the following raw materials in parts by weight: 55% of dry component and 50% of water; the dry components consist of the following raw materials in parts by volume: 70% of inorganic plasticizing microporous particulate material, 20% of inorganic binder, 9% of inorganic filler, 0.1% of inorganic or organic fiber and 0.9% of auxiliary agent; the inorganic plasticizing microporous particulate material is prepared by wet grinding 100 parts by weight of cement, 200 parts by weight of mineral micro powder, 3-30 parts by weight of chemical additive and 40-225 parts by weight of water into slurry with particles smaller than 40 micrometers; or according to the proportion, the cement, the mineral micro powder, the chemical additive and the water which are dry-milled to the particle size of less than 40 mu m are uniformly mixed to prepare slurry; mixing the slurry with 3-10 parts by weight of foam stabilizer and 10-50 parts by weight of foam prepared by mechanical foaming, and performing injection molding; the mineral micro powder is at least one of fly ash, limestone powder and natural zeolite powder, and the particle size of the mineral micro powder is less than 40 mu m; the chemical additive is prepared from a waterproof agent and a reinforcing agent according to a mass ratio of 10-50: 40-60 mixtures; the water is city tap water; the foam stabilizer is at least one of magnesium aluminum silicate, magnesium lithium silicate, modified bentonite and high molecular polymer; the foam is prepared from a foaming agent and water in a mass ratio of 1: 30-50, and preparing foam by nitrogen or air compressor; the foaming agent is at least one of a surfactant foaming agent, a protein foaming agent and a composite foaming agent; the waterproof agent is at least one of emulsified paraffin, higher fatty acid salt and organosilicon waterproof powder; the reinforcing agent is at least one of nanoscale silicon powder, nanoscale magnesium oxide, nanoscale silicon oxide, nanoscale aluminum oxide and nanoscale zinc oxide; the curing condition for preparing the blocky material of the inorganic plasticized microporous particulate material is that the blocky material is maintained for more than 14 days under the environment with the temperature of 5-40 ℃ and the relative humidity of more than 90 percent or is maintained for more than 2 hours-7 days at the temperature of 40-95 ℃. The diameter of the formed foam pores is 100-800 μm, and the foam pores in the block material for preparing the inorganic plasticized microporous particulate material are independentThe mixture is sealed, cut and crushed into 0.08-5 mm of bulk materials. The dry density of the block material of the inorganic plasticized microporous particulate material is 80-110 kg/m3The compression strength is 0.2-3.5 MPa, the volume water absorption is not more than 6%, and the heat conductivity coefficient is 0.030-0.040W/(m.K); the inorganic binder is at least one of siliceous inorganic binder, alkali-activated cementing material, magnesium phosphate cementing material, magnesium oxychloride cement, silicate cementing material, aluminate cement and sulphoaluminate cement; the inorganic filler is at least one of fly ash, slag powder, silica fume, limestone powder, natural zeolite powder and calcined clay; the inorganic or organic fiber is at least one of glass fiber, ceramic fiber, carbon fiber, basalt fiber, mineral fiber and synthetic fiber; the auxiliary agent is at least one of a dispersing agent, a defoaming agent or an air entraining agent, a coupling agent, a high molecular polymer and inorganic gel.
The heat insulating paint based on inorganic plasticized microporous granular material is prepared through mixing dry components, water and normal temperature and painting the mixture onto the outer surface of refractory brick protecting wall, conveying pipeline, metal door and metal facility in industrial kiln or the inner and outer surfaces of cement-base outer wall and roof.
Example 2
Example 2 differs from example 1 in that: the volume ratio of the inorganic plasticizing micropore particulate material, the inorganic binder, the inorganic filler, the inorganic or organic fiber and the auxiliary agent is = 60%: 30%: 9%: 0.5%: 0.5 percent; the mass ratio of dry components to water = 60%: 40 percent, the particle diameter of the inorganic plasticized microporous particulate material is 0.15-15 mm, and the dry density of the prepared blocky material of the inorganic plasticized microporous particulate material is 110-130 kg/m3The compressive strength is more than or equal to 0.3MPa, the volume water absorption is less than or equal to 6%, the heat conductivity coefficient is 0.040-0.045W/(m.K), and the diameter of the foam hole is 50-700 microns.
Example 3
Example 3 differs from example 1 in that: the volume ratio of the inorganic plasticized microporous particulate material to the inorganic binder to the inorganic filler to the inorganic or organic fiber to the auxiliary agent is = 85%: 10%: 3%: 1%: 1 percent; the mass ratio of dry components to water = 65%: 30 percent.
Example 4
Example 4 differs from example 1 in that: the volume ratio of the inorganic plasticized microporous particulate material to the inorganic binder to the inorganic filler to the inorganic or organic fiber to the auxiliary agent is = 5%: 40%: 50%: 1%: 4 percent.
The heat-insulating coating based on the inorganic plasticized microporous particulate material can be used in a normal-temperature environment and a high-temperature environment, and the actual use environment temperature is determined by the property and the mixing amount of the inorganic binder (because the filler is inorganic, the heat-insulating coating can adapt to any temperature environment). The coating is coated on the inner surface, the outer surface and the roof of the cement-based outer wall of the building (normal temperature environment), and the inorganic binder can be general portland cement and sulphoaluminate cement; the inorganic binder can be one of high-alumina cement, magnesium oxychloride cement, siliceous inorganic binder and alkali-activated cementing material; coating on the outer surface of metal facility at temperature higher than 200 deg.C, wherein the inorganic binder can be silicon inorganic binder; the coating is coated on the outer surface of a metal facility with corrosion resistance requirements, and the inorganic binder can be one of siliceous inorganic binders and magnesium phosphate cementing materials.
The invention relates to a heat-insulating coating based on an inorganic plasticized microporous particulate material, which forms a firm and closed heat-insulating coating after coating, and the basic performance of the heat-insulating layer is as follows: the dry density is 150-700kg/m3The compression strength is 0.4-4.0MPa, and the heat conductivity is 0.040-0.14W/(m.K). The thickness of the heat-insulating layer is calculated according to the heat conductivity coefficient of the heat-insulating layer and the requirements of heat insulation and energy conservation. The heat-insulating layer must not crack and pulverize in the using process.
The embodiments described above are intended to facilitate one of ordinary skill in the art in understanding and using the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. An insulation coating based on an inorganic plasticized microporous particulate material is characterized by being prepared from the following raw materials in parts by weight: 55-65% of dry component and 30-50% of water; the dry components consist of the following raw materials in parts by volume: 5-85% of inorganic plasticized microporous particulate material, 10-40% of inorganic binder, 3-50% of inorganic filler, 0.1-1% of inorganic or organic fiber and 0.5-4% of auxiliary agent.
2. An insulating coating based on an inorganic plasticized microporous particulate material according to claim 1, wherein: the inorganic plasticized microporous particulate material is prepared from the following raw materials in parts by weight: 100-200 parts of cement, 0-100 parts of mineral micro powder, 3-30 parts of chemical additive, 40-225 parts of water, 3-10 parts of foam stabilizer and 10-50 parts of foam; uniformly mixing the cement, the mineral micro powder, the chemical additive and the water according to the proportion, and preparing slurry through wet grinding; or according to the proportion, the cement, the mineral micro powder, the chemical additive and the water which are dry-milled to the particle size of less than 40 mu m are uniformly mixed to prepare slurry; and then mixing with a foam stabilizer and foam, carrying out injection molding, curing to form a block material with the pore diameter of 5-800 μm, and then cutting and crushing to prepare a bulk material with the diameter of 0.08-200 mm.
3. An insulating coating based on an inorganic plasticized microporous particulate material according to claim 2, wherein: the cement is at least one of general portland cement, sulphoaluminate cement, aluminate cement, alkali-activated cementing material, magnesium phosphate cement and magnesium oxychloride cement; the particle size of particles in the slurry prepared by wet grinding is less than 40 mu m; the mineral micro powder is at least one of fly ash, limestone powder and natural zeolite powder, and the particle size of the mineral micro powder is less than 40 mu m; the chemical additive is prepared from a waterproof agent and a reinforcing agent according to a mass ratio of 10-50: 40-60 mixtures; the water is city tap water; the foam stabilizer is at least one of magnesium aluminum silicate, magnesium lithium silicate, modified bentonite and high molecular polymer; the foam is prepared from a foaming agent and water in a mass ratio of 1: 30-50 to prepare foaming liquid, and performing foaming by using nitrogen or an air compressor.
4. The inorganic plasticized microporous particulate material of claim 3, wherein: the waterproof agent is at least one of emulsified paraffin, higher fatty acid salt and organosilicon waterproof powder; the reinforcing agent is at least one of nano-scale silicon powder, nano-scale magnesium oxide, nano-scale silicon oxide, nano-scale aluminum oxide and nano-scale zinc oxide; the foaming agent is at least one of surfactant foaming agent, protein foaming agent and composite foaming agent; the curing condition for preparing the blocky material of the inorganic plasticized microporous particulate material is that the blocky material is maintained for more than 14 days under the environment with the temperature of 5-40 ℃ and the relative humidity of more than 90 percent or is maintained for more than 2 hours-7 days at the temperature of 40-95 ℃.
5. An insulating coating based on an inorganic plasticized microporous particulate material according to claim 4, wherein: the dry density of the block material of the inorganic plasticized microporous particulate material is 80-600 kg/m3The compressive strength is 0.2-3.5 MPa, the volume water absorption is not more than 6%, and the heat conductivity is 0.030-0.12W/(m.K).
6. An insulating coating based on an inorganic plasticized microporous particulate material according to claim 5, wherein: the inorganic binder is at least one of siliceous inorganic binder, alkali-activated cementing material, magnesium phosphate cementing material, magnesium oxychloride cement, silicate cementing material, aluminate cement and sulphoaluminate cement; the siliceous inorganic binder is at least one of silica sol, sodium silicate, potassium silicate and lithium silicate.
7. An insulating coating based on an inorganic plasticized microporous particulate material according to claim 6, wherein: the inorganic filler is at least one of fly ash, slag powder, silica fume, limestone powder, natural zeolite powder and calcined clay.
8. An insulating coating based on an inorganic plasticized microporous particulate material according to claim 7, wherein: the inorganic or organic fiber is at least one of glass fiber, ceramic fiber, carbon fiber, basalt fiber, mineral fiber and synthetic fiber.
9. An insulating coating based on an inorganic plasticized microporous particulate material according to claim 8, wherein: the auxiliary agent is at least one of a dispersing agent, a defoaming agent or an air entraining agent, a coupling agent, a high molecular polymer and inorganic gel.
10. Use of an insulating coating based on an inorganic plasticized microporous particulate material according to any of claims 1 to 9, characterized in that: the dry components, water and water are mixed and stirred uniformly at normal temperature and are coated on the outer surfaces of refractory brick enclosure walls, conveying pipelines, metal doors and metal facilities of industrial kilns or the inner and outer surfaces of cement-based outer walls of buildings and roofs.
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