CN111943586A - Heat insulation material for building exterior wall and preparation method thereof - Google Patents
Heat insulation material for building exterior wall and preparation method thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 38
- 238000009413 insulation Methods 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 29
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 24
- XNWFRZJHXBZDAG-UHFFFAOYSA-N ethylene glycol monomethyl ether Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 24
- 239000010881 fly ash Substances 0.000 claims abstract description 17
- 239000000839 emulsion Substances 0.000 claims abstract description 16
- 239000003365 glass fiber Substances 0.000 claims abstract description 16
- 239000003063 flame retardant Substances 0.000 claims abstract description 15
- 239000011230 binding agent Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003469 silicate cement Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 47
- WYURNTSHIVDZCO-UHFFFAOYSA-N tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 22
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 claims description 16
- 239000011398 Portland cement Substances 0.000 claims description 16
- PPBRXRYQALVLMV-UHFFFAOYSA-N styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 13
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N benzohydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000011259 mixed solution Substances 0.000 claims description 12
- YXFVVABEGXRONW-UHFFFAOYSA-N toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 9
- 238000009210 therapy by ultrasound Methods 0.000 claims description 9
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 claims description 8
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 6
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 6
- OMPJBNCRMGITSC-UHFFFAOYSA-N Incidol Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 6
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 125000003700 epoxy group Chemical group 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 230000001376 precipitating Effects 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 239000004568 cement Substances 0.000 abstract description 12
- 239000003638 reducing agent Substances 0.000 abstract description 4
- 239000002002 slurry Substances 0.000 abstract description 4
- 230000002708 enhancing Effects 0.000 abstract description 3
- 239000004570 mortar (masonry) Substances 0.000 description 16
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive Effects 0.000 description 6
- 239000004566 building material Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 238000007711 solidification Methods 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 229960003563 Calcium Carbonate Drugs 0.000 description 4
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 125000001165 hydrophobic group Chemical group 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000006011 modification reaction Methods 0.000 description 3
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 2
- XAPRFLSJBSXESP-UHFFFAOYSA-N Oxycinchophen Chemical compound N=1C2=CC=CC=C2C(C(=O)O)=C(O)C=1C1=CC=CC=C1 XAPRFLSJBSXESP-UHFFFAOYSA-N 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 2
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent 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
- C04B2201/30—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
Abstract
The invention discloses a thermal insulation material for a building exterior wall, which is prepared from the following raw materials in parts by weight: 25-40 parts of modified polyphenyl, 30-40 parts of fly ash, 100 parts of silicate cement, 10-20 parts of flame retardant, 10-15 parts of glass fiber, 75-100 parts of elastic emulsion and 1-5 parts of binder; the invention also discloses a preparation method of the heat insulation material for the building outer wall; the molecules of the polyphenyl particles are spherical molecules, and the structures of the polyphenyl particles are stable and compact molecules, so that the polyethylene glycol monomethyl ether can be grafted on the surfaces of the polyphenyl particles, on one hand, hydrophilic groups can be endowed to the polyphenyl particles to enhance the hydrophilic performance of the polyphenyl particles, and on the other hand, the polyethylene glycol monomethyl ether is often used as a raw material of a cement high-efficiency water reducing agent and can provide stronger dispersing performance for the cement particles, so that the stability of slurry can be improved after the prepared modified polyphenyl particles are mixed with cement.
Description
Technical Field
The invention belongs to the technical field of heat insulation materials, and particularly relates to a heat insulation material for a building outer wall and a preparation method thereof.
Background
Building materials, materials used in buildings, are collectively referred to as building materials. The novel building materials have a wide range, and include heat insulation materials, high-strength materials, breathable materials and the like. The building materials are a general term for materials used in civil engineering and construction work. In building materials, insulation materials generally refer to materials having a thermal conductivity of 0.2 or less. Heat insulation and preservation of buildings are important aspects of energy conservation, improvement of living environment and use functions. The proportion of building energy consumption in the whole human energy consumption is generally 30-40%, and most of the energy consumption is energy consumption of heating and air conditioning, so the building energy saving significance is great.
Chinese patent CN101424103A discloses a building thermal insulation material, which is composed of rice hull, corncob core, volcanic rock slag, calcium carbonate, bamboo fiber and adhesive. The rice husk comprises the following components in percentage by weight: 25-35%, corncob core: 26-34%, volcanic rock ballast: 10-15%, calcium carbonate: 3-5%, bamboo fiber: 0.5-1%, binder: 20 to 26 percent. The manufacturing process comprises the following steps: pulverizing rice hull, corncob core, volcanic rock slag and calcium carbonate, and sieving with 60-120 mesh sieve; making bamboo fiber into fiber with diameter of 0.5-1 mm and length of 2-10 mm; preparing the treated rice hulls, corncobs, volcanic rock residues, calcium carbonate, bamboo fibers and an adhesive according to the weight percentage, uniformly stirring the mixture into paste, coating a release agent on the inner surface of a mould, and pouring the paste mixture into the mould to form the mixture; curing at 5-35 deg.c for 12-30 hr; and (6) demolding and packaging.
Disclosure of Invention
In order to overcome the technical problems, the invention provides a thermal insulation material for a building outer wall and a preparation method thereof.
The technical problems to be solved by the invention are as follows:
the polyphenyl prepared in the prior art has hydrophobic groups on the surface, and is not easy to wet and have affinity after being mixed with portland cement, so that the prepared mortar can be layered, the water retention performance of the mortar is reduced, and the finally prepared insulation board for the building outer wall can be influenced.
The purpose of the invention can be realized by the following technical scheme:
a thermal insulation material for building exterior walls is prepared from the following raw materials in parts by weight: 25-40 parts of modified polyphenyl, 30-40 parts of fly ash, 100 parts of silicate cement, 10-20 parts of flame retardant, 10-15 parts of glass fiber, 75-100 parts of elastic emulsion and 1-5 parts of binder;
the heat insulation material for the building outer wall is prepared by the following method:
firstly, adding portland cement into elastic emulsion, uniformly stirring at a rotating speed of 1200r/min for 40-45min, carrying out ultrasonic treatment for 2h, controlling the ultrasonic frequency to be 20-25kHz, then adding glass fiber and fly ash, heating to 40-45 ℃, and continuously stirring for 30-45min to obtain a mixture;
and secondly, adding modified polyphenyl into the prepared mixture, stirring for 2 hours at the rotating speed of 2500r/min of 2000-.
Further, the modified polyphenyl is prepared by the following method:
step S1, sequentially adding styrene, azodiisobutyronitrile, divinylbenzene and dodecyl mercaptan into a reaction kettle filled with toluene, introducing nitrogen, heating in a water bath at 45-55 ℃, magnetically stirring and reacting for 10 hours, adding hydroquinone, continuing to react for 1 hour, then dropwise adding methanol until no precipitate is generated, filtering, repeatedly precipitating for three times, filtering, washing and drying to prepare polystyrene, wherein the weight ratio of the styrene, the azodiisobutyronitrile, the divinylbenzene, the dodecyl mercaptan, the toluene and the hydroquinone is controlled to be 2: 0.1-0.2: 0.05-0.08: 0.2-0.3: 5: 0.02;
step S2, adding the polyphenyl prepared in the step S1 into tetrahydrofuran, magnetically stirring for 30min to prepare a mixed solution A, and controlling the weight ratio of polyphenyl particles to tetrahydrofuran to be 1: 80-85; adding polyethylene glycol monomethyl ether into tetrahydrofuran, dropwise adding benzoyl peroxide, stirring for 10-15min to prepare a mixed solution B, and controlling the weight ratio of the polyethylene glycol monomethyl ether to the tetrahydrofuran to be 2: 4-5; dropping the mixed solution B into the mixed solution A under the nitrogen atmosphere, reacting for 20 hours at the temperature of 45-50 ℃, centrifuging, filtering and washing for three times to prepare the modified polyphenyl, and controlling the weight ratio of the polyethylene glycol monomethyl ether to the benzoyl peroxide to be 5: 1.
In the step S1, styrene is used as a monomer, divinylbenzene is used as a cross-linking agent, dodecyl mercaptan is used as a chain transfer agent to prepare polyphenyl, then in the step S2, polyphenyl is modified, polyethylene glycol monomethyl ether is grafted on the surfaces of polyphenyl particles, hydrophilic groups such as hydroxyl groups are arranged on polyethylene glycol monomethyl ether molecules, in the modification process, liquid B is added into liquid A, the polyethylene glycol monomethyl ether and the polyphenyl are mixed, the surface of the polyphenyl has hydrophobic groups, and the polyphenyl is not easy to wet and have affinity after being mixed with silicate cement, so that the prepared mortar can generate a layering phenomenon, the water retention performance of the mortar is reduced, the finally prepared insulation board for the exterior wall of the building is influenced, the polyphenyl is modified, the hydrophilic groups are added, the polyphenyl particle molecules prepared in the step S1 are spherical molecules, the structure of the polyphenyl particle molecules is stable to be compact molecules, and the polyethylene glycol monomethyl ether can be grafted on the surfaces of the polyphenyl particles, on one hand, the modified polyphenyl granules can be endowed with hydrophilic groups to enhance the hydrophilic performance of the polyphenyl granules, and on the other hand, the polyethylene glycol monomethyl ether is often used as a raw material of a cement high-efficiency water reducing agent and can provide stronger dispersing performance for the cement granules, so that the prepared modified polyphenyl granules can be mixed with cement to increase the stability of slurry.
Further, the flame retardant is formed by mixing decabromodiphenylethane and brominated epoxy resin according to the weight ratio of 2: 5.
The adhesive is cyanoacrylate-acetylated hydroxypropyl cellulose adhesive.
Further, the weight ratio of the mixed liquid B to the mixed liquid A is controlled to be 1: 5-8.
The preparation method of the heat insulation material for the building outer wall comprises the following steps:
firstly, adding portland cement into elastic emulsion, uniformly stirring at a rotating speed of 1200r/min for 40-45min, carrying out ultrasonic treatment for 2h, controlling the ultrasonic frequency to be 20-25kHz, then adding glass fiber and fly ash, heating to 40-45 ℃, and continuously stirring for 30-45min to obtain a mixture;
and secondly, adding modified polyphenyl into the prepared mixture, stirring for 2 hours at the rotating speed of 2500r/min of 2000-.
The invention has the beneficial effects that:
the invention relates to a heat insulation material for building exterior walls, which takes modified polyphenyl, fly ash, portland cement and the like as raw materials, wherein the modified polyphenyl takes styrene as a monomer, divinylbenzene as a cross-linking agent and dodecyl mercaptan as a chain transfer agent in the step S1 in the preparation process to prepare polyphenyl, then polyphenyl is modified in the step S2, polyethylene glycol monomethyl ether is grafted on the surfaces of polyphenyl particles, hydrophilic groups such as hydroxyl groups are arranged on the molecules of the polyethylene glycol monomethyl ether, the polyethylene glycol monomethyl ether is added into the solution A in the modification process, the polyethylene glycol monomethyl ether is mixed with the polyphenyl, the surface of the polyphenyl has hydrophobic groups, and the polyphenyl is not easy to wet and have affinity after being mixed with the portland cement, so that the prepared mortar can be layered, the water retention property of the mortar is reduced, the finally prepared heat insulation board for the building exterior walls is influenced, the polyphenyl is modified, and the hydrophilic groups are added to the polyphenyl, the molecules of the polyphenyl particles prepared in the step S1 are spherical molecules, and the structures of the polyphenyl particles are stable and compact molecules, so that polyethylene glycol monomethyl ether can be grafted on the surfaces of the polyphenyl particles, on one hand, hydrophilic groups can be endowed to the polyphenyl particles to enhance the hydrophilic performance of the polyphenyl particles, and on the other hand, the polyethylene glycol monomethyl ether is usually used as a raw material of a cement high-efficiency water reducing agent and can provide stronger dispersing performance for the cement particles, so that the stability of slurry can be improved after the prepared modified polyphenyl particles are mixed with cement; therefore, the heat-insulating material prepared by the invention not only has excellent heat-insulating property, but also has good waterproof mechanical property.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious 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 thermal insulation material for building exterior walls is prepared from the following raw materials in parts by weight: 25 parts of modified polyphenyl, 30 parts of fly ash, 100 parts of portland cement, 10 parts of a flame retardant, 10 parts of glass fiber, 75 parts of elastic emulsion and 1 part of a binder;
the heat insulation material for the building outer wall is prepared by the following method:
firstly, adding portland cement into elastic emulsion, uniformly stirring at a rotating speed of 1200r/min for 40min, carrying out ultrasonic treatment for 2h, controlling the ultrasonic frequency to be 20kHz, adding glass fiber and fly ash, heating to 40 ℃, and continuously stirring for 30min to obtain a mixture;
and secondly, adding modified polyphenyl into the prepared mixture, stirring at the rotating speed of 2000r/min for 2 hours, then adding a binder, stirring for 10 minutes, then adding a flame retardant, continuously stirring for 10 minutes to prepare mortar, and then pouring the mortar into a mold for solidification to prepare the thermal insulation material for the outer wall.
The flame retardant is formed by mixing decabromodiphenylethane and brominated epoxy resin according to the weight ratio of 2: 5.
The adhesive is cyanoacrylate-acetylated hydroxypropyl cellulose adhesive.
The modified polyphenyl is prepared by the following method:
step S1, sequentially adding styrene, azodiisobutyronitrile, divinylbenzene and dodecyl mercaptan into a reaction kettle filled with toluene, introducing nitrogen, heating in a water bath at 45 ℃, magnetically stirring and reacting for 10 hours, adding hydroquinone, continuing to react for 1 hour, then dropwise adding methanol until no precipitate is generated, filtering, repeatedly precipitating for three times, filtering, washing and drying to prepare polyphenyl, and controlling the weight ratio of the styrene, the azodiisobutyronitrile, the divinylbenzene, the dodecyl mercaptan, the toluene and the hydroquinone to be 2: 0.1: 0.05: 0.2: 5: 0.02;
step S2, adding the polyphenyl prepared in the step S1 into tetrahydrofuran, magnetically stirring for 30min to prepare a mixed solution A, and controlling the weight ratio of polyphenyl particles to tetrahydrofuran to be 1: 80; adding polyethylene glycol monomethyl ether into tetrahydrofuran, dropwise adding benzoyl peroxide, stirring for 10min to prepare a mixed solution B, and controlling the weight ratio of the polyethylene glycol monomethyl ether to the tetrahydrofuran to be 2: 4; dropping the mixed solution B into the mixed solution A under the nitrogen atmosphere, reacting for 20 hours at the temperature of 45 ℃, centrifuging, filtering and washing for three times to prepare the modified polyphenyl, and controlling the weight ratio of the polyethylene glycol monomethyl ether to the benzoyl peroxide to be 5: 1.
Example 2
A thermal insulation material for building exterior walls is prepared from the following raw materials in parts by weight: 30 parts of modified polyphenyl, 32 parts of fly ash, 102 parts of portland cement, 12 parts of a flame retardant, 12 parts of glass fiber, 80 parts of elastic emulsion and 2 parts of a binder;
the heat insulation material for the building outer wall is prepared by the following method:
firstly, adding portland cement into elastic emulsion, uniformly stirring at a rotating speed of 1200r/min for 40min, carrying out ultrasonic treatment for 2h, controlling the ultrasonic frequency to be 20kHz, adding glass fiber and fly ash, heating to 40 ℃, and continuously stirring for 30min to obtain a mixture;
and secondly, adding modified polyphenyl into the prepared mixture, stirring at the rotating speed of 2000r/min for 2 hours, then adding a binder, stirring for 10 minutes, then adding a flame retardant, continuously stirring for 10 minutes to prepare mortar, and then pouring the mortar into a mold for solidification to prepare the thermal insulation material for the outer wall.
The rest is the same as example 1.
Example 3
A thermal insulation material for building exterior walls is prepared from the following raw materials in parts by weight: 35 parts of modified polyphenyl, 38 parts of fly ash, 108 parts of portland cement, 18 parts of a flame retardant, 14 parts of glass fiber, 85 parts of elastic emulsion and 4 parts of a binder;
the heat insulation material for the building outer wall is prepared by the following method:
firstly, adding portland cement into elastic emulsion, uniformly stirring at a rotating speed of 1200r/min for 40min, carrying out ultrasonic treatment for 2h, controlling the ultrasonic frequency to be 20kHz, adding glass fiber and fly ash, heating to 40 ℃, and continuously stirring for 30min to obtain a mixture;
and secondly, adding modified polyphenyl into the prepared mixture, stirring at the rotating speed of 2000r/min for 2 hours, then adding a binder, stirring for 10 minutes, then adding a flame retardant, continuously stirring for 10 minutes to prepare mortar, and then pouring the mortar into a mold for solidification to prepare the thermal insulation material for the outer wall.
The rest is the same as example 1.
Example 4
A thermal insulation material for building exterior walls is prepared from the following raw materials in parts by weight: 40 parts of modified polyphenyl, 40 parts of fly ash, 110 parts of portland cement, 20 parts of a flame retardant, 15 parts of glass fiber, 100 parts of elastic emulsion and 5 parts of a binder;
the heat insulation material for the building outer wall is prepared by the following method:
firstly, adding portland cement into elastic emulsion, uniformly stirring at a rotating speed of 1200r/min for 40min, carrying out ultrasonic treatment for 2h, controlling the ultrasonic frequency to be 20kHz, adding glass fiber and fly ash, heating to 40 ℃, and continuously stirring for 30min to obtain a mixture;
and secondly, adding modified polyphenyl into the prepared mixture, stirring at the rotating speed of 2000r/min for 2 hours, then adding a binder, stirring for 10 minutes, then adding a flame retardant, continuously stirring for 10 minutes to prepare mortar, and then pouring the mortar into a mold for solidification to prepare the thermal insulation material for the outer wall.
The rest is the same as example 1.
Comparative example 1
Compared with example 1, the preparation method of the comparative example, which replaces the modified polyphenyl with the polyphenyl, is as follows:
firstly, adding portland cement into elastic emulsion, uniformly stirring at a rotating speed of 1200r/min for 40min, carrying out ultrasonic treatment for 2h, controlling the ultrasonic frequency to be 20kHz, adding glass fiber and fly ash, heating to 40 ℃, and continuously stirring for 30min to obtain a mixture;
and secondly, adding polyphenyl into the prepared mixture, stirring for 2 hours at the rotating speed of 2000r/min, then adding a binder, stirring for 10 minutes, then adding a flame retardant, continuously stirring for 10 minutes to prepare mortar, and then pouring the mortar into a mold for solidification to prepare the thermal insulation material for the outer wall.
Comparative example 2
The comparative example is a thermal insulation material for external walls in the market.
The thermal conductivity, water absorption and compressive strength of examples 1 to 4 and comparative examples 1 to 2 were measured, and the results are shown in the following table;
| thermal conductivity W/(m.K) | Water absorption% | Compressive strength MPa | |
| Example 1 | 0.042 | 2.5 | 42.65 |
| Example 2 | 0.044 | 2.3 | 42.68 |
| Example 3 | 0.041 | 2.4 | 42.70 |
| Example 4 | 0.041 | 2.2 | 41.68 |
| Comparative example 1 | 0.080 | 2.8 | 40.33 |
| Comparative example2 | 0.098 | 3.0 | 40.25 |
As can be seen from the above table, the thermal conductivity of examples 1 to 4 is 0.041 to 0.044W/(m.K), the water absorption is 2.2 to 2.5%, the compressive strength is 42.65 to 42.70MPa, the thermal conductivity of comparative examples 1 to 2 is 0.080 to 0.0984W/(m.K), the water absorption is 2.8 to 3.0%, and the compressive strength is 40.25 to 40.33 MPa; therefore, the prepared polyphenyl particle molecules are spherical molecules, and the structure of the polyphenyl particle molecules is stable and compact, so that the polyethylene glycol monomethyl ether can be grafted on the surfaces of the polyphenyl particles, on one hand, hydrophilic groups can be endowed to the polyphenyl particles, and the hydrophilic performance of the polyphenyl particles is enhanced, on the other hand, the polyethylene glycol monomethyl ether is usually used as a raw material of a cement high-efficiency water reducing agent, and can provide stronger dispersing performance for the cement particles, so that the stability of slurry can be improved after the prepared modified polyphenyl particles are mixed with cement.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (5)
1. The heat insulation material for the building outer wall is characterized by being prepared from the following raw materials in parts by weight: 25-40 parts of modified polyphenyl, 30-40 parts of fly ash, 100 parts of silicate cement, 10-20 parts of flame retardant, 10-15 parts of glass fiber, 75-100 parts of elastic emulsion and 1-5 parts of binder;
the heat insulation material for the building outer wall is prepared by the following method:
firstly, adding portland cement into elastic emulsion, uniformly stirring at a rotating speed of 1200r/min for 40-45min, carrying out ultrasonic treatment for 2h, controlling the ultrasonic frequency to be 20-25kHz, then adding glass fiber and fly ash, heating to 40-45 ℃, and continuously stirring for 30-45min to obtain a mixture;
and secondly, adding modified polyphenyl into the prepared mixture, stirring for 2 hours at the rotating speed of 2500r/min of 2000-.
2. The heat insulating material for the external wall of the building as claimed in claim 1, wherein the modified polyphenyl is prepared by the following method:
step S1, sequentially adding styrene, azodiisobutyronitrile, divinylbenzene and dodecyl mercaptan into a reaction kettle filled with toluene, introducing nitrogen, heating in a water bath at 45-55 ℃, magnetically stirring and reacting for 10 hours, adding hydroquinone, continuing to react for 1 hour, then dropwise adding methanol until no precipitate is generated, filtering, repeatedly precipitating for three times, filtering, washing and drying to prepare polystyrene, wherein the weight ratio of the styrene, the azodiisobutyronitrile, the divinylbenzene, the dodecyl mercaptan, the toluene and the hydroquinone is controlled to be 2: 0.1-0.2: 0.05-0.08: 0.2-0.3: 5: 0.02;
step S2, adding the polyphenyl prepared in the step S1 into tetrahydrofuran, magnetically stirring for 30min to prepare a mixed solution A, and controlling the weight ratio of polyphenyl particles to tetrahydrofuran to be 1: 80-85; adding polyethylene glycol monomethyl ether into tetrahydrofuran, dropwise adding benzoyl peroxide, stirring for 10-15min to prepare a mixed solution B, and controlling the weight ratio of the polyethylene glycol monomethyl ether to the tetrahydrofuran to be 2: 4-5; dropping the mixed solution B into the mixed solution A under the nitrogen atmosphere, reacting for 20 hours at the temperature of 45-50 ℃, centrifuging, filtering and washing for three times to prepare the modified polyphenyl, and controlling the weight ratio of the polyethylene glycol monomethyl ether to the benzoyl peroxide to be 5: 1.
3. The heat insulating material for the outer wall of a building as claimed in claim 1, wherein the flame retardant is a mixture of decabromodiphenylethane and brominated epoxy resin in a weight ratio of 2: 5.
4. The heat insulating material for the outer wall of a building as claimed in claim 2, wherein the weight ratio of the mixed liquid B to the mixed liquid A is controlled to be 1: 5-8.
5. The preparation method of the heat insulation material for the building outer wall according to claim 1, characterized by comprising the following steps:
firstly, adding portland cement into elastic emulsion, uniformly stirring at a rotating speed of 1200r/min for 40-45min, carrying out ultrasonic treatment for 2h, controlling the ultrasonic frequency to be 20-25kHz, then adding glass fiber and fly ash, heating to 40-45 ℃, and continuously stirring for 30-45min to obtain a mixture;
and secondly, adding modified polyphenyl into the prepared mixture, stirring for 2 hours at the rotating speed of 2500r/min of 2000-.
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| CN202010743972.5A CN111943586A (en) | 2020-07-29 | 2020-07-29 | Heat insulation material for building exterior wall and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113429819A (en) * | 2021-06-07 | 2021-09-24 | 泰州市中山涂料有限公司 | Wall-protecting water-based interface agent and preparation method thereof |
| CN114956716A (en) * | 2022-04-15 | 2022-08-30 | 武昌理工学院 | Light composite building exterior wall thermal insulation material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424103A (en) * | 2007-11-05 | 2009-05-06 | 江苏南通三建集团有限公司 | Building thermal insulation material and production method thereof |
| CN106278354A (en) * | 2016-08-31 | 2017-01-04 | 张家口市凯博风房地产开发有限公司 | A kind of external-wall heat-insulation material and preparation method thereof |
| CN107311572A (en) * | 2017-08-01 | 2017-11-03 | 长兴贝斯德邦建材科技有限公司 | Novel energy-saving inorganic modified polyphenyl particle heat-insulating plate and its production technology |
| CN111348874A (en) * | 2020-03-10 | 2020-06-30 | 王善波 | Insulation board for building external wall and preparation method thereof |
-
2020
- 2020-07-29 CN CN202010743972.5A patent/CN111943586A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424103A (en) * | 2007-11-05 | 2009-05-06 | 江苏南通三建集团有限公司 | Building thermal insulation material and production method thereof |
| CN106278354A (en) * | 2016-08-31 | 2017-01-04 | 张家口市凯博风房地产开发有限公司 | A kind of external-wall heat-insulation material and preparation method thereof |
| CN107311572A (en) * | 2017-08-01 | 2017-11-03 | 长兴贝斯德邦建材科技有限公司 | Novel energy-saving inorganic modified polyphenyl particle heat-insulating plate and its production technology |
| CN111348874A (en) * | 2020-03-10 | 2020-06-30 | 王善波 | Insulation board for building external wall and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113429819A (en) * | 2021-06-07 | 2021-09-24 | 泰州市中山涂料有限公司 | Wall-protecting water-based interface agent and preparation method thereof |
| CN114956716A (en) * | 2022-04-15 | 2022-08-30 | 武昌理工学院 | Light composite building exterior wall thermal insulation material and preparation method thereof |
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Application publication date: 20201117 |