CN113896497A - Phosphorus II type anhydrous gypsum-based wall thermal insulation material - Google Patents
Phosphorus II type anhydrous gypsum-based wall thermal insulation material Download PDFInfo
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- CN113896497A CN113896497A CN202111203333.0A CN202111203333A CN113896497A CN 113896497 A CN113896497 A CN 113896497A CN 202111203333 A CN202111203333 A CN 202111203333A CN 113896497 A CN113896497 A CN 113896497A
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 239000011574 phosphorus Substances 0.000 title claims abstract description 19
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 19
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 title claims abstract description 18
- 239000012774 insulation material Substances 0.000 title claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000004088 foaming agent Substances 0.000 claims abstract description 15
- 239000011810 insulating material Substances 0.000 claims abstract description 11
- 239000002893 slag Substances 0.000 claims abstract description 8
- 229920005594 polymer fiber Polymers 0.000 claims abstract description 7
- 230000003213 activating effect Effects 0.000 claims abstract description 5
- 239000004568 cement Substances 0.000 claims abstract description 5
- 239000000839 emulsion Substances 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 12
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 7
- 239000012190 activator Substances 0.000 claims description 7
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 7
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 7
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 7
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 7
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 7
- 235000011151 potassium sulphates Nutrition 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 5
- 229910052925 anhydrite Inorganic materials 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 229920002545 silicone oil Polymers 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 230000002940 repellent Effects 0.000 claims 1
- 239000005871 repellent Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 239000004566 building material Substances 0.000 abstract description 3
- 239000000843 powder Substances 0.000 description 7
- 239000002253 acid Substances 0.000 description 5
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 5
- 229920001038 ethylene copolymer Polymers 0.000 description 5
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 5
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 5
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 5
- 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 description 5
- 239000011159 matrix material Substances 0.000 description 5
- 229920000728 polyester Polymers 0.000 description 5
- 150000002431 hydrogen Chemical class 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- -1 sodium fatty alcohol Chemical class 0.000 description 4
- 238000004078 waterproofing Methods 0.000 description 4
- 239000011398 Portland cement Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 3
- 239000010440 gypsum Substances 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000001808 coupling effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000011806 microball Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—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 calcium sulfate cements
- C04B28/16—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 calcium sulfate cements containing anhydrite, e.g. Keene's cement
- C04B28/165—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 calcium sulfate cements containing anhydrite, e.g. Keene's cement containing synthetic anhydrite
-
- 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
- C04B11/00—Calcium sulfate cements
- C04B11/26—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke
-
- 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
- C04B14/22—Glass ; Devitrified glass
-
- 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
- C04B24/161—Macromolecular compounds comprising sulfonate or sulfate groups
- C04B24/166—Macromolecular compounds comprising sulfonate or sulfate groups obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
-
- 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)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Civil Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Building Environments (AREA)
Abstract
The invention belongs to the technical field of building materials, and particularly relates to a phosphorus II type anhydrous gypsum-based wall thermal insulation material. The wall heat-insulating material comprises phosphorus II type anhydrous gypsum, water, cement, slag, an activating agent, vitrified micro bubbles, polymer fibers, a waterproof agent and a foaming agent. The wall heat-insulating material has excellent heat-insulating effect in a humid environment.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a phosphorus II type anhydrous gypsum-based wall thermal insulation material.
Background
In order to solve the technical problem that the quality of a prepared downstream product is poor due to unstable composition of a building gypsum phase prepared from phosphogypsum, the applicant develops phosphorus II type anhydrous gypsum which is prepared by the following process: baking the phosphogypsum at 45 ℃ until the water content is less than or equal to 5%, then calcining at 800 +/-50 ℃ for 2h, cooling by air flow outside a hearth after sintering, grinding into powder with the specific surface area of 400 +/-20 m2/kg, and aging for 3 days. The phase composition of the phosphorus II type anhydrous gypsum is stable.
However, when the phosphorus II type anhydrite is used as a wall thermal insulation material, the thermal insulation effect is not good in a humid environment.
Disclosure of Invention
In view of the above, the invention aims to provide a phosphorus II type anhydrous gypsum-based wall thermal insulation material.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the wall heat insulating material includes anhydrous phosphate II gypsum, water, cement, slag, activator, vitrified micro ball, polymer fiber, waterproof agent and foaming agent.
Further, the specific surface area of the phosphorus II type anhydrous gypsum is 400 +/-20 m2/kg。
Further, the polymer fibers comprise polyvinyl alcohol fibers.
Further, the water-proofing agent comprises an aqueous hydrogen silicone oil emulsion.
Further, the activator includes potassium sulfate and aluminum sulfate.
Further, the foaming agent comprises fatty alcohol-polyoxyethylene ether sodium sulfate.
Further, the activator comprises, by mass, 0.3-0.7 part of potassium sulfate and 0.5-0.9 part of aluminum sulfate.
Furthermore, the wall heat-insulating material also comprises a silicone-acrylic emulsion, a water-retaining agent, a water reducing agent and an adhesive.
Further, the water-retaining agent comprises hydroxypropyl methyl cellulose ether.
Further, the water reducing agent comprises a polyester polycarboxylic acid water reducing agent.
Further, the adhesive comprises re-dispersible emulsion powder of vinyl acetate-ethylene copolymer.
Further, the wall heat-insulating material comprises, by mass, 100 parts of phosphorus II type anhydrous gypsum, 70-85 parts of water, 3-9 parts of cement, 5-12 parts of slag, 0.8-1.6 parts of an activator, 65-85 parts of vitrified micro bubbles, 0.3-0.7 part of polymer fibers, 0.3-0.9 part of a waterproof agent, 0.2-0.6 part of a foaming agent, 0.2-0.7 part of silicone-acrylic emulsion, 0.2-0.6 part of a water-retaining agent, 0.3-0.7 part of a water-reducing agent and 0.2-0.6 part of an adhesive.
The invention also aims to protect the preparation method of the wall thermal insulation material, and the raw materials are uniformly mixed.
The invention has the beneficial effects that:
the wall heat-insulating material has excellent heat-insulating effect in a humid environment.
The invention further solves the technical problem that the high strength and the low density cannot be considered when the phosphorus II is prepared into the wall heat-insulating material.
According to the invention, the foaming agent can further improve the heat insulation effect of the wall heat insulation material.
According to the invention, under the coupling action of the foaming agent and the vitrified micro bubbles, the closed pore porosity of the matrix can be effectively increased, the pore structure characteristics are improved, the weak interface transition zone between the glass beads and the slurry is further reduced, and the water absorption rate and the density of the matrix are macroscopically reduced, so that the heat insulation performance of the wall heat insulation material is obviously improved.
Detailed Description
The examples are provided for better illustration of the present invention, but the present invention is not limited to the examples. Therefore, those skilled in the art should make insubstantial modifications and adaptations to the embodiments of the present invention in light of the above teachings and remain within the scope of the invention.
In the following examples, polyvinyl alcohol fibers were obtained from the company Coli, Japan, specifically, water-soluble high molecular polymer polyvinyl alcohol fibers;
aqueous hydrogen-silicon oil emulsions were purchased from basf, germany;
the silicone-acrylic emulsion is purchased from Guanong chemical technology Co., Ltd, Guangzhou;
hydroxypropyl methyl cellulose ether was purchased from west card (china) building materials ltd;
the polyester polycarboxylic acid water reducing agent is purchased from Pasteur Germany and has the model number of MELFLUX 2651F;
the re-dispersible latex powder of vinyl acetate-ethylene copolymer is purchased from Wake chemical (China) Co.Ltd;
sodium fatty alcohol polyoxyethylene ether sulfate was purchased from Shandong Huixin chemical technology Co., Ltd, and its model is AES.
Example 1
The phosphorus II type anhydrous gypsum is prepared by the following steps:
baking the phosphogypsum at 45 ℃ until the water content is less than or equal to 5%, then calcining at 800 +/-50 ℃ for 2h, cooling to room temperature through air flow outside a hearth after sintering, grinding into powder with the specific surface area of 400 +/-20 m2/kg, and aging for 3 days.
Example 2
The wall heat-insulating material comprises the following raw materials:
phosphorus type II anhydrite from example 1: 100 kg;
tap water: 75 kg;
P.O 42.5 grade Portland cement: 5 kg;
slag (S95 grade, specific surface area 400-450 m)2/kg)：7kg；
Activating agent: 0.5kg of potassium sulfate and 0.7kg of aluminum sulfate;
vitrified micro bubbles (volume weight 80-130kg/m3, particle size 150-: 75 kg;
polyvinyl alcohol fibers: 0.3 kg;
water-proofing agent: 0.6kg of aqueous hydrogen silicone oil emulsion;
silicone acrylic emulsion (solid content 30%): 0.4 kg;
water-retaining agent: 0.6kg of hydroxypropyl methyl cellulose ether;
polyester polycarboxylic acid water reducing agent: 0.3 kg;
adhesive: 0.5kg of re-dispersible emulsion powder of vinyl acetate-ethylene copolymer;
foaming agent: 0.4kg of sodium fatty alcohol polyoxyethylene ether sulfate.
The preparation steps of the wall heat insulation material are as follows: mixing the above materials.
Example 3
The wall heat-insulating material comprises the following raw materials:
phosphorus type II anhydrite from example 1: 100 kg;
tap water: 73 kg;
P.O 42.5 grade Portland cement: 4 kg;
slag (S95 grade, specific surface area 400-450 m)2/kg)：7kg；
Activating agent: 0.4kg of potassium sulfate and 0.7kg of aluminum sulfate;
vitrified micro bubbles (volume weight 80-130 kg/m)3Particle size 150-: 68 kg;
polyvinyl alcohol fibers: 0.4 kg;
water-proofing agent: 0.4kg of aqueous hydrogen silicone oil emulsion;
silicone acrylic emulsion (solid content 30%): 0.3 kg;
water-retaining agent: 0.5kg of hydroxypropyl methyl cellulose ether;
0.3kg of polyester polycarboxylic acid water reducing agent;
adhesive: 0.2kg of re-dispersible emulsion powder of vinyl acetate-ethylene copolymer;
foaming agent: 0.2kg of sodium fatty alcohol polyoxyethylene ether sulfate.
The preparation steps of the wall heat insulation material are as follows: mixing the above materials.
Example 4
The wall heat-insulating material comprises the following raw materials:
phosphorus type II anhydrite from example 1: 100 kg;
tap water: 81 kg;
P.O 42.5 grade Portland cement: 6 kg;
slag (S95 grade, specific surface area 400-450 m)2/kg)：6kg；
Activating agent: 0.6kg of potassium sulfate and 0.6kg of aluminum sulfate;
vitrified micro bubbles (volume weight 80-130kg/m3, particle size 150-: 73 kg;
polyvinyl alcohol fibers: 0.6 kg;
water-proofing agent: 0.7kg of aqueous hydrogen silicone oil emulsion;
silicone acrylic emulsion (solid content 30%): 0.3 kg;
water-retaining agent: 0.6kg of hydroxypropyl methyl cellulose ether;
0.6kg of polyester polycarboxylic acid water reducing agent;
adhesive: 0.3kg of re-dispersible emulsion powder of vinyl acetate-ethylene copolymer;
foaming agent: 0.3kg of sodium fatty alcohol polyoxyethylene ether sulfate.
The preparation steps of the wall heat insulation material are as follows: mixing the above materials.
Example 5
This embodiment is different from embodiment 4 in that: does not contain fatty alcohol polyoxyethylene ether sodium sulfate.
Example 6
This embodiment is different from embodiment 4 in that: no vitrified micro bubbles are contained.
Performance detection
The wall thermal insulation materials prepared in examples 2 to 6 were tested for compressive strength, density and thermal conductivity according to GB/T28627-2012 plastering gypsum, and the results are shown in Table 1.
TABLE 1 test results
| Detecting content | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 |
| Compressive strength/MPa | 1.53 | 1.65 | 1.47 | 4.36 | 9.68 |
| Density/(kg/m)3) | 305 | 316 | 298 | 436 | 980 |
| Thermal conductivity/(W/(m.K)) | 0.15 | 0.17 | 0.13 | 0.39 | 0.46 |
As is clear from Table 1, the thermal conductivity of example 4 was reduced by 0.26W/(mK) and 0.33W/(mK) as compared with examples 5 and 6, respectively. Therefore, the foaming agent and the vitrified micro bubbles can further improve the sound insulation effect in the invention, and the reason may be that: the foaming agent can enter air into the solution under the action of mechanical stirring to generate closed foam in the matrix, so that the density is reduced, and the heat insulation performance is enhanced; under the coupling action of the foaming agent and the vitrified micro bubbles, the closed pore porosity of the matrix can be effectively increased, the pore structure characteristics are improved, the weak interface transition zone between the glass beads and the slurry is further reduced, the water absorption rate and the density of the matrix are macroscopically reduced, and therefore the heat insulation performance of the wall heat insulation material is obviously improved.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The wall heat insulating material is characterized by comprising phosphorus II type anhydrous gypsum, water, cement, slag, an activating agent, vitrified micro bubbles, polymer fibers, a waterproof agent and a foaming agent.
2. The wall insulation of claim 1, wherein the phosphorus type II anhydrite has a specific surface area of 400 ± 20m2/kg。
3. The wall insulation of claim 1 or 2, wherein the polymer fibers comprise polyvinyl alcohol fibers.
4. The wall insulation of any of claims 1-3, wherein the water repellent agent comprises an aqueous hydrogen silicone oil emulsion.
5. The wall insulation of any of claims 1-4, wherein the activator comprises potassium sulfate and aluminum sulfate.
6. The wall insulation material of claim 5, wherein the activator comprises, by mass, 0.3 to 0.7 parts of potassium sulfate and 0.5 to 0.9 parts of aluminum sulfate.
7. The wall insulation of any of claims 1-6, wherein the foaming agent comprises sodium fatty alcohol-polyoxyethylene ether sulfate.
8. The wall insulation of any one of claims 1-7, further comprising a silicone-acrylic emulsion, a water retention agent, a water reducing agent, and an adhesive.
9. The wall thermal insulation material of claim 8, which comprises, by mass, 100 parts of phosphorus II type anhydrous gypsum, 70-85 parts of water, 3-9 parts of cement, 5-12 parts of slag, 0.8-1.6 parts of an activator, 65-85 parts of vitrified micro bubbles, 0.3-0.7 part of polymer fibers, 0.3-0.9 part of a waterproof agent, 0.2-0.6 part of a foaming agent, 0.2-0.7 part of a silicone-acrylic emulsion, 0.2-0.6 part of a water-retaining agent, 0.3-0.7 part of a water-reducing agent and 0.2-0.6 part of an adhesive.
10. A method for preparing a wall insulation material according to claims 1-9, characterized in that the raw materials are mixed uniformly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111203333.0A CN113896497A (en) | 2021-10-15 | 2021-10-15 | Phosphorus II type anhydrous gypsum-based wall thermal insulation material |
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Application publication date: 20220107 |