CN112441810A - Environment-friendly preparation process of light magnesium oxysulfate wall material - Google Patents
Environment-friendly preparation process of light magnesium oxysulfate wall material Download PDFInfo
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- CN112441810A CN112441810A CN202011338351.5A CN202011338351A CN112441810A CN 112441810 A CN112441810 A CN 112441810A CN 202011338351 A CN202011338351 A CN 202011338351A CN 112441810 A CN112441810 A CN 112441810A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/30—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing magnesium cements or similar cements
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
-
- 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
- C04B38/106—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam by adding preformed foams
-
- 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
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/52—Sound-insulating materials
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)
- General Chemical & Material Sciences (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses an environment-friendly preparation process of a light magnesium oxysulfate wall material, which comprises the following steps: s1: mixing light-burned magnesia powder, a magnesium sulfate solution and a magnesium oxysulfate modifier to obtain a first mixture; s2: mixing polystyrene particles, a foaming agent, an active filler, foaming agent foam and the first mixture to obtain a second mixture; s3: injecting the fiber and the second mixture into a mold, laying a layer of glass fiber net at the bottom of the mold, feeding the glass fiber net into a forming machine for natural forming, and laying a layer of glass fiber net at the top of the mold; s4: and (4) demolding, naturally molding the sample at normal temperature, and naturally curing. The light magnesium oxysulfate wall material does not discharge pollutants in the environment-friendly preparation process, and has better environment-friendly performance. The light magnesium oxysulfate wall material produced by the method has the advantages of good sound insulation, bending resistance, bearing and anti-halogen performance, and the fireproof performance reaches the A1 standard, and simultaneously meets the requirements of light products.
Description
Technical Field
The invention relates to the field of building materials, in particular to an environment-friendly preparation process of a light magnesium oxysulfate wall material.
Background
With the continuous development of scientific technology, the demand for environment-friendly and nontoxic decorative materials is gradually increased, people put forward higher requirements on building materials, and the original materials are not more and more suitable for the needs of people. The prior magnesium oxysulfate wall material has the following defects: toxic and non-degradable inorganic materials cause secondary pollution, and the construction is complicated, the cost is high, the high temperature resistance, the acid and alkali resistance and the corrosion resistance are avoided. Therefore, the traditional building materials discharge a large amount of pollutants in the production process, and seriously damage the environment.
Disclosure of Invention
The invention aims to provide an environment-friendly preparation process of a light magnesium oxysulfate wall material, which solves one or more of the problems in the prior art.
The invention provides an environment-friendly preparation process of a light magnesium oxysulfate wall material, which comprises the following steps:
s1: mixing light-burned magnesia powder, a magnesium sulfate solution and a magnesium oxysulfate modifier to obtain a first mixture;
s2: mixing polystyrene particles, a foaming agent, an active filler, foaming agent foam and the first mixture to obtain a second mixture;
s3: injecting the fiber and the second mixture into a mold, laying a layer of glass fiber net at the bottom of the mold, feeding the glass fiber net into a forming machine for natural forming, and laying a layer of glass fiber net at the top of the mold;
s4: and (4) demolding, naturally molding the sample at normal temperature, and naturally curing.
In certain embodiments, the first mixture is made from 40 to 50 parts by weight of light-burned magnesium oxide powder, 40 to 50 parts of magnesium sulfate solution, and 1 to 5 parts of magnesium oxysulfate modifier; the second mixture is made from 20 to 40 parts polystyrene particles, 10 to 20 parts blowing agent, 10 to 20 parts reactive filler, 5 to 10 parts blowing agent foam, and 50 to 60 parts of the first mixture.
In certain embodiments, the starting material for the magnesium sulfate solution is selected from anhydrous magnesium sulfate, magnesium sulfate monohydrate, magnesium sulfate heptahydrate, or mixtures thereof.
In certain embodiments, the foaming agent is selected from expanded perlite, expanded vermiculite, ceramsite or mixtures thereof.
In certain embodiments, the reactive filler is selected from fly ash, silica fume, reactive slag, or mixtures thereof.
In some embodiments, the foaming agent foam is formed by mixing and foaming a foaming agent and water, wherein the weight part ratio of the foaming agent to the water is 1:30 to 1: 40.
In certain embodiments, the fibers are selected from mineral fibers selected from silica, alumina, or mixtures thereof.
In certain embodiments, the light-burned magnesia powder has a magnesia content of 72 to 76%, a silica content of 7 to 9%, and a calcia content of 2 to 3%.
In certain embodiments, the purity of anhydrous magnesium sulfate is greater than or equal to 95%, the purity of magnesium sulfate monohydrate is greater than or equal to 95%, and the purity of magnesium sulfate heptahydrate is greater than or equal to 95%.
In some embodiments, the foaming agent is a composite magnesite special foaming agent, and the bubble diameter of the composite magnesite special foaming agent is 0.5-0.8 mm.
In some embodiments, in step S1, the light-burned magnesia powder, the magnesium sulfate solution and the magnesium oxysulfate modifier are stirred at 30 to 40 ℃ for 5 to 10 min.
In certain embodiments, in step S2, the polystyrene particles, blowing agent, active filler, blowing agent foam, and first mixture are placed in a high speed mixer at a speed of 1000 to 2000r/min and stirred at a high speed for 10 to 20min at 50 to 60 ℃.
In some embodiments, the roll forming temperature is 38 to 42 ℃ and the pressure is 12 to 14MPa in step S3.
In some embodiments, the temperature of natural curing is 21 to 24 ℃ and the curing age is 20 to 30 hours in step S4.
Has the advantages that: the light magnesium oxysulfate wall material does not discharge pollutants in the environment-friendly preparation process, and has better environment-friendly performance. The light magnesium oxysulfate wall material prepared by the preparation process has the advantages of good sound insulation, bending resistance, bearing capacity and anti-halogen property, and the fireproof performance reaches the A1 standard, and simultaneously meets the requirements of light products.
Detailed Description
The present invention will be described in further detail below with reference to embodiments.
Example 1
The embodiment discloses an environment-friendly preparation process of a light magnesium oxysulfate wall material, which comprises the following steps:
s1: according to the weight parts, 40 parts of light-burned magnesia powder (the magnesia content of the light-burned magnesia powder is 72-76%, the silica content is 7-9%, and the calcium oxide content is 2-3%), 40 parts of magnesium sulfate solution (the raw material is selected from anhydrous magnesium sulfate with the purity of more than or equal to 95%) and 1 part of magnesium oxysulfate modifier are stirred for 5min at 30 ℃ to obtain a first mixture;
s2: at 50 ℃, placing 20 parts of polystyrene particles, 10 parts of foaming agent (the foaming agent is a composite magnesite special foaming agent with the foam diameter of 0.5-0.8 mm), 10 parts of fly ash, 5 parts of foaming agent foam and 50 parts of first mixture in a high-speed stirrer with the rotating speed of 1000r/min for high-speed stirring for 20min to obtain a second mixture;
wherein: the foaming agent foam is formed by mixing and foaming expanded perlite and water, and the weight part ratio of the foaming agent to the water is 1: 30.
S3: injecting the silicon dioxide and the second mixture into a mold, laying a layer of glass fiber net at the bottom of the mold, feeding the mixture into a forming machine for natural forming (the temperature for forming by a compression roller is 38 ℃, and the pressure is 12Mpa), and laying a layer of glass fiber net at the top of the mold;
s4: and (4) demolding, naturally molding the sample at normal temperature, and naturally curing (the natural curing temperature is 21 ℃ and the curing age is 30 hours).
Example 2
The embodiment discloses an environment-friendly preparation process of a light magnesium oxysulfate wall material, which comprises the following steps:
s1: according to the weight parts, 43 parts of light-burned magnesia powder (the magnesia content of the light-burned magnesia powder is 72-76%, the silica content is 7-9%, and the calcium oxide content is 2-3%), 43 parts of magnesium sulfate solution (the raw material is selected from magnesium sulfate monohydrate with the purity of more than or equal to 95%) and 2 parts of magnesium oxysulfate modifier are stirred for 7min at 33 ℃ to obtain a first mixture;
s2: at the temperature of 53 ℃, placing 23 parts of polystyrene particles, 13 parts of foaming agent (the foaming agent is a composite magnesite special foaming agent with the foam diameter of 0.5-0.8 mm), 13 parts of silica fume, 7 parts of foaming agent foam and 53 parts of first mixture in a high-speed stirrer with the rotating speed of 1200r/min for high-speed stirring for 18min to obtain a second mixture;
wherein: the foaming agent foam is formed by mixing and foaming expanded vermiculite and water, and the weight part ratio of the foaming agent to the water is 1: 33.
S3: injecting the alumina and the second mixture into a mold, laying a layer of glass fiber net at the bottom of the mold, feeding the mixture into a forming machine for natural forming (the temperature for forming by a compression roller is 39 ℃, and the pressure is 13Mpa), and laying a layer of glass fiber net at the top of the mold;
s4: and (4) demolding, naturally molding the sample at normal temperature, and naturally curing (the natural curing temperature is 22 ℃, and the curing age is 27 hours).
Example 3
The embodiment discloses an environment-friendly preparation process of a light magnesium oxysulfate wall material, which comprises the following steps:
s1: according to the weight parts, 46 parts of light-burned magnesia powder (the magnesia content of the light-burned magnesia powder is 72-76%, the silica content is 7-9%, and the calcium oxide content is 2-3%), 46 parts of magnesium sulfate solution (the raw material is selected from magnesium sulfate heptahydrate with the purity being more than or equal to 95%) and 4 parts of magnesium oxysulfate modifier are stirred for 8min at 36 ℃ to obtain a first mixture;
s2: at 56 ℃, placing 30 parts of polystyrene particles, 16 parts of foaming agent (the foaming agent is a composite magnesite special foaming agent with the foam diameter of 0.5-0.8 mm), 16 parts of active slag, 8 parts of foaming agent foam and 56 parts of first mixture in a high-speed stirrer with the rotating speed of 1600r/min for high-speed stirring for 16min to obtain a second mixture;
wherein: the foaming agent foam is formed by mixing and foaming ceramsite and water, and the weight part ratio of the foaming agent to the water is 1: 36.
S3: injecting the silicon dioxide and the second mixture into a mold, laying a layer of glass fiber net at the bottom of the mold, feeding the mixture into a forming machine for natural forming (the temperature for forming by a compression roller is 40 ℃, and the pressure is 13Mpa), and laying a layer of glass fiber net at the top of the mold;
s4: and (4) demolding, naturally molding the sample at normal temperature, and naturally curing (the natural curing temperature is 23 ℃, and the curing age is 23 h).
Example 4
The embodiment discloses an environment-friendly preparation process of a light magnesium oxysulfate wall material, which comprises the following steps:
s1: according to the weight parts, 50 parts of light-burned magnesia powder (the magnesia content of the light-burned magnesia powder is 72-76%, the silica content is 7-9%, and the calcium oxide content is 2-3%), 50 parts of magnesium sulfate solution (the raw material is selected from magnesium sulfate monohydrate with the purity of more than or equal to 95%) and 5 parts of magnesium oxysulfate modifier are stirred for 10min at 40 ℃ to obtain a first mixture;
s2: at 60 ℃, placing 40 parts of polystyrene particles, 20 parts of foaming agent (the foaming agent is a composite magnesite special foaming agent with the foam diameter of 0.5-0.8 mm), 20 parts of fly ash, 10 parts of foaming agent foam and 60 parts of first mixture in a high-speed stirrer with the rotating speed of 2000r/min for high-speed stirring for 10min to obtain a second mixture;
wherein: the foaming agent foam is formed by mixing and foaming expanded vermiculite and water, and the weight ratio of the foaming agent to the water is 1: 40.
S3: injecting the alumina and the second mixture into a mold, laying a layer of glass fiber net at the bottom of the mold, feeding into a forming machine for natural forming (the temperature for forming by a compression roller is 42 ℃, and the pressure is 12Mpa), and laying a layer of glass fiber net at the top of the mold;
s4: and (4) demolding, naturally molding the sample at normal temperature, and naturally curing (the natural curing temperature is 24 ℃, and the curing age is 20 hours).
The density, the anti-halogen property, the sound insulation property and the fire resistance of the above examples were measured by the following methods.
(1) Apparent density (kg/m 3): the assay was performed based on JC/T646-.
(2) Bending resistance load bearing (plate dead weight multiple): the assay was performed based on GB/T23451-20096.4.2.
(3) Anti-halogen property: the determination was carried out on the basis of GB/T33544-20176.4.8.
(4) Sound insulation (dB): the measurement was carried out based on GB/T19889.3.
(5) Fire rating: the assay was based on GB 8624-20125.1.1.
The evaluation results of the light magnesium oxysulfate wall material produced by the invention are shown in the following table 1:
as can be seen from Table 1, the apparent density of the light magnesium oxysulfate wall material is 200-215kg/m3, so that the product density is greatly reduced, and the requirements of light products are met. The sound insulation effect of the light magnesium oxysulfate wall material is 38-43dB, and a good sound insulation effect can be realized. The wall board can bear 2.0-2.4 times of the self weight, and the fire-retardant rating is A1. In addition, because of the magnesium oxysulfate plate, the wall has the anti-halogen performance, and the phenomena of water drop and moisture regain do not occur in the test process.
In summary, the following steps: the light magnesium oxysulfate wall material does not discharge pollutants in the environment-friendly preparation process, and has better environment-friendly performance. The light magnesium oxysulfate wall material prepared by the preparation process has the advantages of good sound insulation, bending resistance, bearing capacity and anti-halogen property, and the fireproof performance reaches the A1 standard, and simultaneously meets the requirements of light products.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these should be considered as within the scope of the present invention.
Claims (10)
1. The environment-friendly preparation process of the light magnesium oxysulfate wall material is characterized by comprising the following steps of:
s1: mixing materials, namely mixing light-burned magnesia powder, a magnesium sulfate solution and a magnesium oxysulfate modifier to obtain a first mixture;
s2: mixing polystyrene particles, a foaming agent, an active filler, foaming agent foam and the first mixture to obtain a second mixture;
s3: injecting the fiber and the second mixture into a mold, laying a layer of glass fiber net at the bottom of the mold, feeding the glass fiber net into a forming machine for natural forming, and laying a layer of glass fiber net at the top of the mold;
s4: and (4) demolding, naturally molding the sample at normal temperature, and naturally curing.
2. The environment-friendly preparation process of the light magnesium oxysulfate wall material according to claim 1, wherein the first mixture is prepared from 40 to 50 parts by weight of light-burned magnesium oxide powder, 40 to 50 parts by weight of magnesium sulfate solution and 1 to 5 parts by weight of magnesium oxysulfate modifier; the second mixture is made from 20 to 40 parts polystyrene particles, 10 to 20 parts blowing agent, 10 to 20 parts active filler, 5 to 10 parts blowing agent foam, and 50 to 60 parts of the first mixture.
3. The environment-friendly preparation process of the light magnesium oxysulfate wall material as claimed in claim 1 or 2, wherein the raw material of the magnesium sulfate solution is selected from anhydrous magnesium sulfate, magnesium sulfate monohydrate, magnesium sulfate heptahydrate or a mixture thereof; the foaming agent is selected from expanded perlite, expanded vermiculite, ceramsite or a mixture thereof; the active filler is selected from fly ash, silica fume, active slag or a mixture thereof; the foaming agent foam is formed by mixing and foaming a foaming agent and water, wherein the weight part ratio of the foaming agent to the water is 1: 30-1: 40; the fibers are selected from mineral fibers selected from silica, alumina or mixtures thereof.
4. The environment-friendly preparation process of the light magnesium oxysulfate wall material as claimed in claim 3, wherein the light-burned magnesium oxide powder has a magnesium oxide content of 72 to 76%, a silica content of 7 to 9%, and a calcium oxide content of 2 to 3%.
5. The environment-friendly preparation process of the light magnesium oxysulfate wall material as claimed in claim 3, wherein the purity of anhydrous magnesium sulfate is not less than 95%, the purity of magnesium sulfate monohydrate is not less than 95%, and the purity of magnesium sulfate heptahydrate is not less than 95%.
6. The environment-friendly preparation process of the light magnesium oxysulfate wall material as claimed in claim 3, wherein the foaming agent is a composite magnesite special foaming agent, and the bubble diameter of the composite magnesite special foaming agent is 0.5-0.8 mm.
7. The environment-friendly preparation process of the light magnesium oxysulfate wall material as claimed in claim 1, wherein in the step S1, the light burned magnesium oxide powder, the magnesium sulfate solution and the magnesium oxysulfate modifier are stirred for 5 to 10min at 30 to 40 ℃.
8. The environmentally friendly process of claim 1, wherein in step S2, the polystyrene particles, the foaming agent, the active filler, the foaming agent foam and the first mixture are placed in a high speed mixer at a rotation speed of 1000 to 2000r/min and stirred at a high speed for 10 to 20min at a temperature of 50 to 60 ℃.
9. The environment-friendly preparation process of the light magnesium oxysulfate wall material as claimed in claim 1, wherein in the step S3, the compression molding temperature is 38 to 42 ℃ and the pressure is 12 to 14 Mpa.
10. The environment-friendly preparation process of the lightweight magnesium oxysulfate wall material according to claim 1, wherein in the step S4, the natural curing temperature is 21 to 24 ℃, and the curing age is 20 to 30 hours.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113829474A (en) * | 2021-10-13 | 2021-12-24 | 辽宁科大中驰镁建材科技有限公司 | Method for preparing magnesium fireproof plate from low-content light-burned magnesia powder |
| CN116041034A (en) * | 2022-12-27 | 2023-05-02 | 中能新能源科技(深圳)有限公司 | Fireproof and explosion-proof material, preparation method thereof, plate and battery bin |
| CN116496104A (en) * | 2023-05-18 | 2023-07-28 | 江阴市威腾铝箔合成材料有限公司 | Magnesium material plate and preparation method thereof |
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| CN116496104A (en) * | 2023-05-18 | 2023-07-28 | 江阴市威腾铝箔合成材料有限公司 | Magnesium material plate and preparation method thereof |
| CN116496104B (en) * | 2023-05-18 | 2024-03-22 | 江阴市威腾铝箔合成材料有限公司 | Magnesium material plate and preparation method thereof |
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