CN112390613A - Inorganic light flame-retardant external wall insulation board and preparation method thereof - Google Patents
Inorganic light flame-retardant external wall insulation board and preparation method thereof Download PDFInfo
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- CN112390613A CN112390613A CN201910771957.9A CN201910771957A CN112390613A CN 112390613 A CN112390613 A CN 112390613A CN 201910771957 A CN201910771957 A CN 201910771957A CN 112390613 A CN112390613 A CN 112390613A
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- 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
Abstract
The invention relates to the field of heat insulation materials, and particularly discloses an inorganic light flame-retardant external wall heat insulation board which comprises the following raw materials: inorganic light mineral materials, rock wool, fly ash, expanded vermiculite, light magnesium oxide, aluminum hydroxide, anti-crack fibers, inorganic cementing materials, waterproof auxiliaries, plasticizers and purified water. The invention also discloses a preparation method of the inorganic light flame-retardant external wall insulation board. In order to solve the problem that the existing external wall insulation board is easy to ignite due to the adoption of organic materials, the invention prepares the inorganic light flame-retardant external wall insulation board through reasonable compatibility of raw materials, and the inorganic light flame-retardant external wall insulation board has the excellent performances of ageing resistance, water resistance, no combustion, low heat conductivity coefficient, saltpetering resistance and the like, and the raw materials are mostly natural minerals and have the advantage of low price.
Description
Technical Field
The invention relates to the field of heat insulation materials, in particular to an inorganic light flame-retardant external wall heat insulation board and a preparation method thereof.
Background
With the development of society and the progress of science and technology, the heat preservation requirement of people on buildings is continuously improved. Wherein, the external wall insulation board is as a kind of building structure who places the heat preservation in main part wall material outside and plays the heat preservation effect, can provide the protection to the major structure, avoids the major structure to produce great temperature variation, avoids the room temperature great fluctuation to appear simultaneously, and then is favorable to prolonging major structure's life. At present, the construction by adopting the external wall insulation board is the most widely applied insulation method.
However, with the occurrence of many fire accidents of building exterior wall insulation boards in recent years, the fire-proof performance of the exterior wall insulation boards is highly valued by various industries in the industry. At present, materials used for the outer wall insulation board are usually rubber powder polystyrene particles, phenolic resin foam boards, expandable polystyrene boards (EPS) or extruded sheets (XPS) and the like, the materials can be ignited under the conditions of naked flame, electric welding and the like, and gases such as chlorofluorocarbon, hydrofluorocarbon, freon and the like released in the combustion process can cause harm to the environment. Therefore, the design of an inorganic light flame-retardant external wall insulation board and a preparation method thereof becomes a problem which needs to be solved at present.
Disclosure of Invention
The invention aims to provide an inorganic light flame-retardant external wall insulation board and a preparation method thereof, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an inorganic light flame-retardant external wall insulation board comprises the following raw materials in parts by weight: 65-67 parts of inorganic light mineral material, 2 parts of rock wool, 3 parts of fly ash, 3 parts of expanded vermiculite, 2-2.4 parts of light magnesium oxide, 2.3-2.5 parts of aluminum hydroxide, 0.1-0.2 part of anti-crack fiber, 7-8.5 parts of inorganic cementing material, 0.5 part of waterproof auxiliary agent, 2.5-3.5 parts of plasticizer and 10 parts of purified water.
As a further scheme of the invention: the inorganic light mineral material is a mixture of two or three of expanded and vitrified micro-beads, expanded perlite and closed-cell perlite, the particle size range is 1.0-4.0mm, and coarse and fine particles are matched for use.
As a still further scheme of the invention: the anti-crack fiber is polypropylene short fiber with the specification of 9mm, and is purchased from Yizheng Fang commerce and trade company Limited.
As a still further scheme of the invention: the waterproof auxiliary agent is mainly one of methyl potassium silicate or methyl sodium silicate, and is purchased from Shang and Shang Co., Ltd.
As a still further scheme of the invention: the plasticizer is mainly acrylic elastic latex, is used for increasing the flexibility and the strength of the heat-insulation board, and is purchased from Lin Yizheng Fang commercial and trade company Limited.
The preparation method of the inorganic light flame-retardant outer wall insulation board comprises the following steps:
1) weighing purified water according to parts by weight, adding the purified water into a liquid dispersion tank (the existing product, the specific model is selected according to the requirement, and the specification is not limited herein), sequentially adding a waterproof auxiliary agent, a plasticizer and an inorganic cementing material, and stirring for 20 minutes to prepare a material A (uniform viscous liquid) for later use;
2) respectively weighing inorganic light mineral materials, rock wool, fly ash, expanded vermiculite, light magnesium oxide, aluminum hydroxide and anti-crack fibers according to the weight parts, conveying the materials into a stirrer through a conveying belt, and uniformly stirring to obtain a material B; the stirrer is a drum stirrer (double-cone type), can be an existing product, and is not limited in the specification, and the specific type is selected according to the requirement;
3) conveying the material A obtained in the step 1) into a stirrer through a pipeline, mixing the material A with the material B, and then continuously stirring the mixture uniformly to obtain a loose material C without obvious liquid;
4) conveying the material C prepared in the step 3) to a bin of a press through a conveying belt, starting the press and pressing by adopting the existing process conditions to obtain the external wall insulation board;
5) and (4) conveying the external wall insulation board pressed in the step 4) into a drying chamber through a conveyor belt, and curing for a short time to obtain the external wall insulation board.
As a still further scheme of the invention: in the step 1), the stirring speed is 1500 r/min.
Compared with the prior art, the invention has the beneficial effects that:
the inorganic light flame-retardant outer wall insulation board is prepared by reasonably matching inorganic light mineral materials, rock wool, fly ash, expanded vermiculite, light magnesium oxide, aluminum hydroxide, anti-crack fibers, inorganic cementing materials, waterproof auxiliaries, plasticizers and other raw materials, has excellent performances of aging resistance, water resistance, no combustion, low heat conductivity coefficient, saltpetering resistance and the like, is mainly made of natural minerals, is low in price and easy to purchase, belongs to a green environment-friendly novel building material, and solves the problem that the existing outer wall insulation board is easy to ignite due to the adoption of organic materials.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to specific embodiments.
Example 1
An inorganic light flame-retardant external wall insulation board comprises the following raw materials in parts by weight: 67 parts of inorganic light mineral material, 2 parts of rock wool, 3 parts of fly ash, 3 parts of expanded vermiculite, 2.4 parts of light magnesium oxide, 2.5 parts of aluminum hydroxide, 0.1 part of anti-crack fiber, 7 parts of inorganic cementing material, 0.5 part of waterproof auxiliary agent, 2.5 parts of plasticizer and 10 parts of purified water.
The inorganic light mineral material is a mixture of two or three of expanded and vitrified beads, expanded perlite and closed-cell perlite, the particle size range is 1.0-4.0mm, and coarse and fine particles are matched for use.
Further, the rock wool is rock wool fiber and is made of high-quality basalt.
Furthermore, the fly ash is mainly from a power plant and is recycled, and the strength and durability of the insulation board are enhanced through the fly ash because the fly ash particles are in a porous honeycomb structure.
Furthermore, the expanded vermiculite is produced from Shijiazhuang in Hebei province, has low thermal conductivity and is a good heat insulation material.
Further, the light magnesium oxide is white powder with high fire-resistant and heat-insulating properties, and is available from near-Yizheng Doo commerce and trade company.
Further, the aluminum hydroxide is an inorganic flame retardant, can not only resist flame, but also prevent fuming, does not produce harmful gas, and is purchased from near-Yizheng Fang commercial and trade company Limited.
Furthermore, the anti-crack fiber is polypropylene short fiber with the specification of 9mm, and is purchased from near-Yizheng Fang commercial Co.
Further, the inorganic cementing material is a mixture of two or three of portland cement, gypsum powder, silica sol, potassium silicate and clay, and in this embodiment, the inorganic cementing material is preferably 4 parts by weight of potassium silicate and 3 parts by weight of clay.
Further, the waterproof auxiliary agent is mainly one of methyl potassium silicate or methyl sodium silicate, which is commercially available from shang zheng shang dynasty business ltd.
Furthermore, the plasticizer is mainly acrylic elastic latex, is used for increasing the flexibility and the strength of the insulation board, and is purchased from the near-Yizheng Shang Fang.
In this embodiment, the preparation method of the inorganic light flame-retardant exterior wall insulation board (taking an insulation board with a specification size of 60cm × 30cm × 6cm as an example) includes the following steps:
1) weighing 10 parts of purified water according to the formula in parts by weight, adding the purified water into a liquid dispersion tank, sequentially adding 0.5 part of waterproof auxiliary agent, 2.5 parts of plasticizer, 4 parts of potassium silicate and 3 parts of clay, and stirring (at the speed of 1500r/min) for 20 minutes to obtain a material A (uniform viscous liquid) for later use;
2) respectively weighing 35 parts of expanded perlite, 32 parts of expanded vitrified micro bubbles, 2 parts of rock wool, 3 parts of fly ash, 3 parts of expanded vermiculite, 2.4 parts of light magnesium oxide, 2.5 parts of aluminum hydroxide and 0.1 part of anti-crack fiber according to the parts by weight, conveying the materials into a roller of a roller type stirrer (a double-cone type) through a conveying belt, and uniformly stirring to obtain a material B;
3) conveying the material A obtained in the step 1) into a stirrer through a pipeline, mixing the material A with the material B, and then continuously stirring the mixture uniformly to obtain a loose material C without obvious liquid;
4) conveying the material C prepared in the step 3) to a bin of a press through a conveying belt, and adjusting the compression ratio of the press to 2: 1, starting a press and pressing by adopting the existing process conditions to obtain the external wall insulation board;
5) and (3) conveying the external wall insulation board pressed in the step 4) into a drying chamber through a conveyor belt, and drying, steam curing and curing (by adopting the existing process) to obtain the external wall insulation board.
Example 2
An inorganic light flame-retardant external wall insulation board comprises the following raw materials in parts by weight: 65 parts of inorganic light mineral material, 2 parts of rock wool, 3 parts of fly ash, 3 parts of expanded vermiculite, 2 parts of light magnesium oxide, 2.3 parts of aluminum hydroxide, 0.2 part of anti-crack fiber, 8.5 parts of inorganic cementing material, 0.5 part of waterproof auxiliary agent, 3.5 parts of plasticizer and 10 parts of purified water.
The inorganic light mineral material is a mixture of two or three of expanded and vitrified micro bubbles, expanded perlite and closed-cell perlite, the particle size range is 1.0-4.0mm, and coarse and fine particles are matched for use.
Further, the rock wool is rock wool fiber and is made of high-quality basalt.
Furthermore, the fly ash is mainly from a power plant and is recycled, and the strength and durability of the insulation board are enhanced through the fly ash because the fly ash particles are in a porous honeycomb structure.
Furthermore, the expanded vermiculite is produced from Shijiazhuang in Hebei province, has low thermal conductivity and is a good heat insulation material.
Further, the light magnesium oxide is white powder with high fire-resistant and heat-insulating properties, and is available from near-Yizheng Doo commerce and trade company.
Further, the aluminum hydroxide is an inorganic flame retardant, can not only resist flame, but also prevent fuming, does not produce harmful gas, and is purchased from near-Yizheng Fang commercial and trade company Limited.
Furthermore, the anti-crack fiber is polypropylene short fiber with the specification of 9mm, and is purchased from near-Yizheng Fang commercial Co.
Further, the inorganic cementing material is a mixture of two or three of portland cement, gypsum powder, silica sol, potassium silicate and clay, and in this embodiment, the inorganic cementing material is preferably 2 parts by weight of potassium silicate, 2 parts by weight of silica sol and 4.5 parts by weight of 425 portland cement.
Further, the waterproof auxiliary agent is mainly one of methyl potassium silicate or methyl sodium silicate, which is commercially available from store company limited in the near-Yizheng province, in this embodiment, preferably, the waterproof auxiliary agent is methyl sodium silicate.
Furthermore, the plasticizer is mainly acrylic elastic latex, is used for increasing the flexibility and the strength of the insulation board, and is purchased from the near-Yizheng Shang Fang.
In this embodiment, the preparation method of the inorganic light flame-retardant exterior wall insulation board (taking an insulation board with a specification size of 60cm × 30cm × 6cm as an example) includes the following steps:
1) weighing 10 parts of purified water according to the formula in parts by weight, adding the purified water into a liquid dispersion tank, sequentially adding 0.5 part of waterproof auxiliary agent, 3.5 parts of plasticizer, 2 parts of potassium silicate and 2 parts of silica sol, and stirring (at the speed of 1500r/min) for 20 minutes to obtain a material A (uniform viscous liquid) for later use;
2) weighing 15 parts of expanded perlite, 30 parts of vitrified micro bubbles, 20 parts of closed-cell perlite, 2 parts of rock wool, 3 parts of fly ash, 3 parts of expanded vermiculite, 2 parts of light magnesium oxide, 2.3 parts of aluminum hydroxide, 4.5 parts of 425 silicate cement and 0.2 part of anti-crack fiber according to the parts by weight, conveying the materials into a roller of a roller type mixer (double-cone type) through a conveying belt, and uniformly stirring to obtain a material B;
3) conveying the material A obtained in the step 1) into a stirrer through a pipeline, mixing the material A with the material B, and then continuously stirring the mixture uniformly to obtain a loose material C without obvious liquid;
4) conveying the material C prepared in the step 3) to a bin of a press through a conveying belt, adjusting the compression ratio of the press to 2: 1, starting the press and pressing by adopting the existing process conditions to obtain the external wall insulation board;
5) and (3) conveying the external wall insulation board pressed in the step 4) into a drying chamber through a conveyor belt, and drying, curing and curing by steam (by adopting the existing process) to obtain the external wall insulation board.
Performance testing
The inorganic light flame-retardant exterior wall insulation board prepared in the embodiment 1-2 is detected, and the detection result is shown in table 1.
TABLE 1 test results Table
| Detecting items | Performance index | Example 1 | Example 2 |
| Grade of combustion performance | Class A | Class A | Class A |
| Dry density, Kg/m3 | ≤260 | 200 | 220 |
| Coefficient of thermal conductivity (25 ℃), W/(m.K) | ≤0.060 | 0.043 | 0.050 |
| Compressive strength, Mpa | ≥0.35 | 0.38 | 0.41 |
| Tensile strength, Mpa | ≥0.10 | 0.11 | 0.12 |
| Water absorption (v/v)% | ≤6.50 | 6.35 | 6.50 |
| Coefficient of softening | ≥0.80 | 0.85 | 0.80 |
The inorganic lightweight flame-retardant outer wall insulation board has the beneficial effects that the inorganic lightweight mineral material, rock wool, fly ash, expanded vermiculite, lightweight magnesium oxide, aluminum hydroxide, anti-crack fibers, an inorganic cementing material, a waterproof auxiliary agent, a plasticizer and other raw materials are reasonably compatible to prepare the inorganic lightweight flame-retardant outer wall insulation board with the waterproof grade of A, the compatibility of various raw materials is reasonable, the raw materials are mostly natural minerals and are low in price and easy to purchase, the cured finished insulation board has excellent performances of aging resistance, water resistance, non-combustion, low heat conductivity coefficient, saltpetering resistance and the like, belongs to a green environment-friendly novel building material, the problem that the existing outer wall insulation board is easy to ignite due to the adoption of organic materials such as glue powder polyphenyl particles, phenolic resin foam boards, expandable polystyrene boards (EPS) or extruded sheets (XPS) is solved, and the inorganic lightweight flame-retardant outer wall insulation board has a.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (7)
1. An inorganic light flame-retardant external wall insulation board is characterized by comprising the following raw materials in parts by weight: 65-67 parts of inorganic light mineral material, 2 parts of rock wool, 3 parts of fly ash, 3 parts of expanded vermiculite, 2-2.4 parts of light magnesium oxide, 2.3-2.5 parts of aluminum hydroxide, 0.1-0.2 part of anti-crack fiber, 7-8.5 parts of inorganic cementing material, 0.5 part of waterproof auxiliary agent, 2.5-3.5 parts of plasticizer and 10 parts of purified water.
2. The inorganic lightweight flame retardant exterior wall insulation board according to claim 1, wherein the inorganic lightweight mineral material is a mixture of two or three of expanded and vitrified beads, expanded perlite and closed-cell perlite.
3. The inorganic light flame-retardant exterior wall insulation board according to claim 1 or 2, wherein the crack-resistant fiber is polypropylene short fiber.
4. The inorganic lightweight flame retardant exterior wall insulation board according to claim 3, wherein the waterproof auxiliary agent is one of methyl potassium silicate or methyl sodium silicate.
5. The inorganic lightweight flame retardant exterior wall insulation board according to claim 3, wherein the plasticizer is an acrylic elastic latex.
6. A preparation method of the inorganic light flame-retardant exterior wall insulation board according to any one of claims 1 to 5, characterized by comprising the following steps:
1) weighing purified water according to the parts by weight, adding the purified water into a liquid dispersion tank, sequentially adding a waterproof auxiliary agent, a plasticizer and an inorganic cementing material, and stirring for 20 minutes to obtain a material A for later use;
2) respectively weighing inorganic light mineral materials, rock wool, fly ash, expanded vermiculite, light magnesium oxide, aluminum hydroxide and anti-crack fibers according to the weight parts, conveying the materials into a stirrer through a conveying belt, and uniformly stirring to obtain a material B;
3) conveying the material A obtained in the step 1) into a stirrer through a pipeline, mixing the material A with the material B, and then continuously stirring the mixture uniformly to obtain a material C;
4) pressing the material C prepared in the step 3) to obtain the external wall insulation board;
5) and (4) conveying the external wall insulation board pressed in the step 4) into a drying chamber, and curing to obtain the external wall insulation board.
7. The method according to claim 6, wherein the stirring is performed at a rate of 1500r/min in the step 1).
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| CN105924104A (en) * | 2016-04-28 | 2016-09-07 | 中晶工程材料（信阳）有限公司 | Expanded perlite insulation board and production method thereof |
| CN107265942A (en) * | 2017-06-22 | 2017-10-20 | 合肥永泰新型建材有限公司 | A kind of insulation material and preparation method thereof |
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| JP2008214173A (en) * | 2007-03-05 | 2008-09-18 | Takami Onuma | Inorganic lightweight heat insulating plate material and method of manufacturing the same |
| CN102329121A (en) * | 2011-07-04 | 2012-01-25 | 信阳天意节能技术有限公司 | Inorganic fireproof heat-insulation board and preparation method thereof |
| CN105367024A (en) * | 2015-12-04 | 2016-03-02 | 南阳理工学院 | Heat-preserving material for outer wall |
| CN105924104A (en) * | 2016-04-28 | 2016-09-07 | 中晶工程材料（信阳）有限公司 | Expanded perlite insulation board and production method thereof |
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