CN113979715B - Aerogel modified magnesium oxysulfate fireproof insulation board and preparation method thereof - Google Patents

Aerogel modified magnesium oxysulfate fireproof insulation board and preparation method thereof Download PDF

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CN113979715B
CN113979715B CN202111411550.9A CN202111411550A CN113979715B CN 113979715 B CN113979715 B CN 113979715B CN 202111411550 A CN202111411550 A CN 202111411550A CN 113979715 B CN113979715 B CN 113979715B
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aerogel
powder
parts
aerogel composite
composite powder
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CN113979715A (en
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陈勇
段国栋
陈世忠
谢江
徐兴艳
张海华
王浩浩
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Xiangshui Huaxia Special Material Technology Development Co ltd
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Xiangshui Huaxia Special Material Technology Development Co ltd
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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
    • 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
    • C04B14/06—Quartz; Sand
    • C04B14/064—Silica aerogel
    • 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
    • C04B14/38—Fibrous materials; Whiskers
    • C04B14/42—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
    • 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
    • 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
    • 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 provides an aerogel modified magnesium oxysulfate fireproof insulation board and a preparation method thereof. The preparation method mainly comprises the following steps: s1, preparing a magnesium sulfate aqueous solution; s2, dispersing the magnesium sulfate solution, the aerogel composite powder, the additive and the like into slurry fluid by a high-speed dispersion machine; and S3, adding light-burned magnesia powder, uniformly stirring to obtain slurry, pouring in a plate making machine mould, and curing, molding, cutting and curing to obtain the magnesium oxysulfate fireproof heat-preservation plate. Compared with the traditional magnesium oxysulfate plate, the fireproof insulation plate disclosed by the invention has the advantages that the strength of the plate is ensured, the density is lower, the heat insulation performance is better, the water resistance is obviously improved, and the comprehensive performance is obviously improved.

Description

Aerogel modified magnesium oxysulfate fireproof insulation board and preparation method thereof
Technical Field
The invention belongs to the field of materials, and particularly relates to an aerogel modified magnesium oxysulfate fireproof insulation board and a preparation method thereof.
Background
The magnesium oxysulfate board is a gelling material product made of air-hardening magnesium formed by active magnesium oxide and magnesium sulfate solution, has the characteristics of relatively light texture, low heat conduction, excellent fire resistance and the like compared with a silicate cement board, has wide application as a fire-resistant insulating material, can be used for manufacturing building wallboards, door core boards, ceiling boards, packing boxes and the like, can be coated with mixed paint and clear water paint on the surface as required, can be processed into various types of boards, and can be used for simple fire-proof engineering in damp environments such as basements, mine shafts and the like.
Compared with the common magnesium oxychloride board, the magnesium oxysulfate board has the characteristics of higher temperature resistance, lower corrosion to metal and the like, thoroughly gets rid of the possibility of returning halogen and returning frost of the magnesium oxychloride board, and is a green and environment-friendly building material with great potential. With the development of times and technological progress, especially the recent proposal of the goals of carbon peak reaching and carbon neutralization, higher requirements are put forward on the energy-saving performance of building materials. The magnesium oxysulfate board is widely applied to heat preservation, fire prevention and decoration of buildings, and still has the defects of poor water resistance, high density, high heat conductivity coefficient and the like, so the improvement is still needed.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an aerogel modified magnesium oxysulfate fireproof insulation board and a preparation method thereof. Its thermal conductivity coefficient is less than 0.08W/(mK), and its density is less than 900kg/m3The fire-proof grade is A1 grade, the highest service temperature can reach 1400 ℃, the water absorption rate is less than 10 percent, the flexural strength can reach 10MPa, and the softening coefficient is higher than 0.9.
The invention provides the following technical scheme:
the aerogel modified magnesium oxysulfate fireproof heat-insulation board is prepared from the following raw materials, by weight, 34-44 parts of industrial magnesium sulfate heptahydrate, 19-38 parts of light-burned magnesium oxide powder, 10-15 parts of aerogel composite powder, 0.5-1.0 part of EVA rubber powder, 0.8-1.5 parts of citric acid and 22-33 parts of water.
Preferably, the aerogel composite material is prepared from the following raw materials, by weight, 34 parts of industrial magnesium sulfate heptahydrate, 19 parts of light-burned magnesium oxide powder, 10 parts of aerogel composite powder, 0.5 part of EVA rubber powder, 0.8 part of citric acid and 22 parts of water.
In any scheme, the aerogel composite material is preferably prepared from the following raw materials, by weight, 36-42 parts of industrial magnesium sulfate heptahydrate, 22-35 parts of light-burned magnesium oxide powder, 11-14 parts of aerogel composite powder, 0.6-0.8 part of EVA rubber powder, 1-1.4 parts of citric acid and 25-30 parts of water.
In any scheme, the composite material is preferably prepared from the following raw materials, by weight, 36 parts of industrial magnesium sulfate heptahydrate, 22 parts of light-burned magnesium oxide powder, 11 parts of aerogel composite powder, 0.6 part of EVA rubber powder, 1 part of citric acid and 25 parts of water.
In any scheme, the composite material is preferably prepared from the following raw materials, by weight, 38 parts of industrial magnesium sulfate heptahydrate, 30 parts of light-burned magnesium oxide powder, 13 parts of aerogel composite powder, 0.7 part of EVA rubber powder, 1.2 parts of citric acid and 28 parts of water.
In any scheme, the composite material is preferably prepared from the following raw materials, by weight, 42 parts of industrial magnesium sulfate heptahydrate, 35 parts of light-burned magnesia powder, 14 parts of aerogel composite powder, 0.8 part of EVA rubber powder, 1.4 parts of citric acid and 30 parts of water.
In any scheme, the composite material is preferably prepared from the following raw materials, by weight, 44 parts of industrial magnesium sulfate heptahydrate, 38 parts of light-burned magnesia powder, 15 parts of aerogel composite powder, 1.0 part of EVA rubber powder, 1.5 parts of citric acid and 33 parts of water.
In any of the above embodiments, preferably, the content of active magnesium oxide in the light-burned magnesia powder is not less than 80%.
In any of the above embodiments, it is preferable that the content of active magnesium oxide in the light-burned magnesia powder is 85%.
In any of the above embodiments, preferably, the content of active magnesium oxide in the light-burned magnesia powder is 90%.
In any of the above embodiments, it is preferable that the content of active magnesium oxide in the light-burned magnesia powder is 95%.
In any of the above schemes, preferably, the aerogel composite powder is a powder obtained by mixing silica with an average particle size of less than 100 μm and glass fibers, wherein the silica is obtained by shredding and ball-milling an aerogel composite coiled material, and the content of aerogel is not less than 30%.
In any of the above schemes, preferably, the aerogel composite powder is a powder obtained by mixing silica with an average particle size of less than 100 μm and glass fibers, wherein the average particle size of the aerogel composite coiled material is obtained by shredding and ball milling, and the usage proportion of the aerogel composite powder is 3-4, wherein the particle size of the aerogel composite powder is 5-40 μm, 40-70 μm, and 70-100 μm: 2-3: 1-2.
In any of the above schemes, preferably, the aerogel composite powder has a grain size of 5-40 μm, 40-70 μm, and 70-100 μm, and the usage ratio is 3: 2: 1.
in any of the above schemes, preferably, the aerogel composite powder has a particle size of 5-40 μm, 40-70 μm, and 70-100 μm, and the usage ratio is 4: 2: 1.
in any of the above schemes, preferably, the aerogel composite powder has a grain size of 5-40 μm, 40-70 μm, and 70-100 μm, and the usage ratio is 3: 3: 1.
in any of the above schemes, preferably, the aerogel composite powder has a particle size of 5-40 μm, 40-70 μm, and 70-100 μm, and the usage ratio is 4: 2: 2.
in any of the above schemes, preferably, the aerogel composite powder has a grain size of 5-40 μm, 40-70 μm, and 70-100 μm, and the usage ratio is 4: 3: 1.
in any of the above schemes, preferably, the aerogel composite powder has a grain size of 5-40 μm, 40-70 μm, and 70-100 μm, and the usage ratio is 4: 3: 2.
in any of the above schemes, preferably, the aerogel composite powder is a powder obtained by mixing silica and glass fibers, and the use amount ratio of silica to glass fibers is 1-3: 1-3.
In any of the above schemes, preferably, the amount ratio of the silica to the glass fiber in the aerogel composite powder is 1: 1.
In any of the above schemes, preferably, the amount ratio of the silica to the glass fiber in the aerogel composite powder is 1: 2.
In any of the above schemes, preferably, the amount ratio of the silica to the glass fiber in the aerogel composite powder is 1: 3.
In any of the above schemes, preferably, the amount ratio of the silica to the glass fiber in the aerogel composite powder is 2: 3.
In any of the above schemes, preferably, the amount ratio of the silica to the glass fiber in the aerogel composite powder is 3: 2.
In any of the above schemes, preferably, the amount ratio of the silica to the glass fiber in the aerogel composite powder is 2: 1.
In any of the above schemes, preferably, the amount ratio of the silica to the glass fiber in the aerogel composite powder is 3: 1.
In any of the above schemes, preferably, the aerogel content in the aerogel composite powder is more than or equal to 30%.
In any of the above schemes, preferably, the aerogel content in the aerogel composite powder is 30% -50%.
In any of the above schemes, preferably, the aerogel content in the aerogel composite powder is 30%.
In any of the above schemes, preferably, the aerogel content in the aerogel composite powder is 35%.
In any of the above schemes, preferably, the aerogel content in the aerogel composite powder is 40%.
In any of the above schemes, preferably, the aerogel content in the aerogel composite powder is 50%. The invention also discloses a preparation method of the aerogel modified magnesium oxysulfate fireproof insulation board, which comprises the following steps of:
(1) preparing a magnesium sulfate solution;
(2) mixing EVA rubber powder, citric acid and aerogel composite powder uniformly, and adding the mixture into the step (1)
Dispersing the magnesium sulfate solution at a high speed to obtain a modified magnesium sulfate solution;
(3) adding light-burned magnesia powder into the modified magnesium sulfate solution obtained in the step (3), fully stirring to form uniform slurry, conveying the slurry into a plate making machine for template filling, covering cloth on two sides, flattening by a roller, gradually solidifying to obtain a wet plate, and cutting and maintaining the wet plate to obtain the magnesium oxysulfate plate.
Preferably, in the step (1), industrial magnesium sulfate heptahydrate is added to water and sufficiently dissolved to obtain a magnesium sulfate solution.
In any scheme, the aerogel composite material is preferably prepared from the following raw materials, by weight, 34-44 parts of industrial magnesium sulfate heptahydrate, 19-38 parts of light-burned magnesium oxide powder, 10-15 parts of aerogel composite powder, 0.5-1.0 part of EVA rubber powder, 0.8-1.5 parts of citric acid and 22-33 parts of water.
In any scheme, the composite material is preferably prepared from the following raw materials, by weight, 34 parts of industrial magnesium sulfate heptahydrate, 19 parts of light-burned magnesium oxide powder, 10 parts of aerogel composite powder, 0.5 part of EVA rubber powder, 0.8 part of citric acid and 22 parts of water.
In any scheme, the aerogel composite material is preferably prepared from the following raw materials, by weight, 36-42 parts of industrial magnesium sulfate heptahydrate, 22-35 parts of light-burned magnesium oxide powder, 11-14 parts of aerogel composite powder, 0.6-0.8 part of EVA rubber powder, 1-1.4 parts of citric acid and 25-30 parts of water.
In any scheme, the composite material is preferably prepared from the following raw materials, by weight, 36 parts of industrial magnesium sulfate heptahydrate, 22 parts of light-burned magnesium oxide powder, 11 parts of aerogel composite powder, 0.6 part of EVA rubber powder, 1 part of citric acid and 25 parts of water.
In any scheme, the composite material is preferably prepared from the following raw materials, by weight, 38 parts of industrial magnesium sulfate heptahydrate, 30 parts of light-burned magnesium oxide powder, 13 parts of aerogel composite powder, 0.7 part of EVA rubber powder, 1.2 parts of citric acid and 28 parts of water.
In any scheme, the composite material is preferably prepared from the following raw materials, by weight, 42 parts of industrial magnesium sulfate heptahydrate, 35 parts of light-burned magnesium oxide powder, 14 parts of aerogel composite powder, 0.8 part of EVA rubber powder, 1.4 parts of citric acid and 30 parts of water.
In any scheme, the composite material is preferably prepared from the following raw materials, by weight, 44 parts of industrial magnesium sulfate heptahydrate, 38 parts of light-burned magnesia powder, 15 parts of aerogel composite powder, 1.0 part of EVA rubber powder, 1.5 parts of citric acid and 33 parts of water.
In any of the above schemes, preferably, the aerogel composite powder is a powder obtained by mixing silica with an average particle size of less than 100 μm and glass fibers, wherein the silica is obtained by shredding and ball-milling an aerogel composite coiled material, and the content of aerogel is not less than 30%.
In any of the above schemes, preferably, the step (2) is performed with a high speed dispersion machine 300 and 3000r/min for 10-60 min.
In any of the above schemes, preferably, the step (2) is performed with a high speed dispersion machine 300r/min for 60 min.
In any of the above schemes, preferably, in the step (2), the high-speed dispersion is performed for 30min by a high-speed dispersion machine 1000 r/min.
In any of the above embodiments, preferably, in the step (2), the high-speed dispersion is performed for 10min by a high-speed disperser 3000 r/min.
In any of the above schemes, preferably, the aerogel composite powder in step (2) is a powder obtained by mixing silica with an average particle size of less than 100 μm and glass fibers, which is obtained by shredding and ball-milling an aerogel composite coiled material.
In any of the above schemes, preferably, the aerogel composite powder in step (2) is a powder obtained by mixing silica with an average particle size of less than 100 μm and glass fiber, wherein the average particle size of the aerogel composite coiled material is obtained by shredding and ball milling, and the usage proportion of the aerogel composite powder with particle sizes of 5-40 μm, 40-70 μm and 70-100 μm is 3-4: 2-3: 1-2.
In any of the above schemes, preferably, the ratio of the particle size of the aerogel composite powder in step (2) to the amount of 70-100 μm is 3: 2: 1.
in any of the above schemes, preferably, the ratio of the particle size of the aerogel composite powder in step (2) to the amount of 70-100 μm is 4: 2: 1.
in any of the above schemes, preferably, the ratio of the particle size of the aerogel composite powder in step (2) to the amount of 70-100 μm is 3: 3: 1.
in any of the above schemes, preferably, the ratio of the particle size of the aerogel composite powder in step (2) to the amount of 70-100 μm is 4: 2: 2.
in any of the above schemes, preferably, the ratio of the particle size of the aerogel composite powder in step (2) to the amount of 70-100 μm is 4: 3: 1.
in any of the above schemes, preferably, the ratio of the particle size of the aerogel composite powder in step (2) to the amount of 70-100 μm is 4: 3: 2.
in any of the above schemes, preferably, the aerogel composite powder in step (2) is a powder obtained by mixing silica and glass fiber, and the dosage ratio of silica to glass fiber is 1-3: 1-3.
In any of the above schemes, it is preferable that the ratio of the amount of silica to the amount of glass fiber in the aerogel composite powder in step (2) is 1: 1.
In any of the above schemes, it is preferable that the ratio of the amount of silica to the amount of glass fiber in the aerogel composite powder in step (2) is 1: 2.
In any of the above schemes, it is preferable that the ratio of the amount of silica to the amount of glass fiber in the aerogel composite powder in step (2) is 1: 3.
In any of the above schemes, it is preferable that the ratio of the amount of silica to the amount of glass fiber in the aerogel composite powder in step (2) is 2: 3.
In any of the above schemes, it is preferable that the ratio of the amount of silica to the amount of glass fiber in the aerogel composite powder in step (2) is 3: 2.
In any of the above schemes, it is preferable that the ratio of the amount of silica to the amount of glass fiber in the aerogel composite powder in step (2) is 2: 1.
In any of the above schemes, it is preferable that the ratio of the amount of silica to the amount of glass fiber in the aerogel composite powder in step (2) is 3: 1.
In any of the above schemes, preferably, the aerogel content in the aerogel composite powder in the step (2) is more than or equal to 30%.
In any of the above schemes, preferably, the aerogel content in the aerogel composite powder in the step (2) is 30% -50%.
In any of the above schemes, preferably, the aerogel content in the aerogel composite powder in the step (2) is 30%.
In any of the above schemes, preferably, the aerogel content in the aerogel composite powder in the step (2) is 35%.
In any of the above schemes, preferably, the aerogel content in the aerogel composite powder in the step (2) is 40%.
In any of the above schemes, preferably, the aerogel content in the aerogel composite powder in the step (2) is 50%.
In any of the above schemes, preferably, in the step (3), the light-burned magnesia powder is added into the modified magnesium sulfate solution, and fully stirred for 1-5min to form uniform slurry.
Advantageous effects
The invention provides an aerogel modified magnesium oxysulfate fireproof insulation board and a preparation method thereof. The preparation method mainly comprises the following steps: s1, preparing a magnesium sulfate aqueous solution; s2, dispersing the magnesium sulfate solution, the aerogel composite powder, the additive and the like into slurry fluid by a high-speed dispersion machine; and S3, adding light-burned magnesia powder, uniformly stirring to obtain slurry, pouring in a plate making machine mould, and curing, molding, cutting and curing to obtain the magnesium oxysulfate fireproof heat-preservation plate. Compared with the traditional magnesium oxysulfate plate, the magnesium oxysulfate plate has the advantages that the magnesium oxysulfate plate has lower density, better heat insulation performance, obviously improved water resistance and obviously improved comprehensive performance while ensuring the strength of the plate, and specifically:
(1) the invention improves the heat insulation performance of the magnesium oxysulfate plate by using the aerogel modified material with the best heat insulation performance, so that the heat conductivity coefficient of the magnesium oxysulfate plate is reduced to be lower than 0.08W/(m.K), the fireproof performance is ensured to reach A level, in addition, the density of the magnesium oxysulfate plate can be greatly reduced by modifying the aerogel, the strength of the magnesium oxysulfate plate is not obviously influenced, and the popularization and the use of the material are facilitated.
(2) The invention adopts aerogel composite powder, which is the powder mixed by silicon dioxide with the average grain diameter less than 100 mu m and glass fiber obtained by shredding and ball milling an aerogel composite coiled material, wherein the content of aerogel is not lower than 30 percent, and the continuous grading design is adopted, so that pure aerogel powder is not directly adopted, and the main reasons are that the density of the pure aerogel powder is extremely low, and the pure aerogel powder is easy to escape in the high-speed dispersion process in the dispersion process, thereby causing the waste of a large amount of aerogel powder and environmental pollution; in addition, pure aerogels are expensive and cost-prohibitive.
(3) The invention adopts aerogel felt and its rim charge to obtain composite powder after crushing and ball milling and carries out modification. Aerogel felt comprises aerogel cladding glass fiber, at broken and ball-milling in-process, adopts the design of continuous gradation, and the aerogel can be more evenly dispersed and the cladding on the fibre surface, and the compound powder proportion of aerogel of formation is greater than pure aerogel, and the difficult loss of dispersion in-process more does benefit to and disperses in the magnesium sulfate solution. Meanwhile, the existence of the glass fiber powder is more beneficial to improving the strength of the plate.
(4) The aerogel composite powder is completely hydrophobic, and the board formed by modifying magnesium oxysulfate by the process has the advantages of obviously reduced full-soaking water absorption rate and improved water repellency.
Drawings
FIG. 1 is a diagram of an aerogel composite powder material object of the present invention;
FIG. 2 is a comparison graph of a common magnesium oxysulfate plate and an aerogel modified magnesium oxysulfate plate prepared by the present invention; the figure A is a common magnesium oxysulfate plate, and the figure B is an aerogel modified magnesium oxysulfate plate prepared by the method.
Detailed Description
In order to further understand the technical features of the present invention, the present invention is described in detail with reference to the specific embodiments below.
Example 1
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board specifically comprises the following steps:
34kg of magnesium sulfate heptahydrate was added to 22kg of water, and the mixture was sufficiently stirred and dissolved to obtain a magnesium sulfate solution. Gradually adding the mixture into uniformly mixed powder consisting of 0.7kg of EVA rubber powder, 1.2kg of citric acid and 10kg of aerogel composite powder, and performing high-speed dispersion for 60min by a high-speed dispersion machine at the rotating speed gradually increased by 300-3000r/min to obtain a modified magnesium sulfate solution. Then adding 19kg of light-burned magnesia powder (the content of active magnesia in the light-burned magnesia powder is not less than 80%), fully stirring for 5min to form uniform slurry, conveying the slurry into a plate making machine for template filling, covering alkali-resistant mesh cloth on two sides, flattening by a roller, gradually solidifying to obtain a wet plate, and cutting and naturally curing the wet plate to obtain the magnesium oxysulfide plate.
The gel composite powder used in this embodiment is, as shown in fig. 1, a powder obtained by shredding and ball-milling an aerogel composite coiled material and mixing silica having an average particle size of less than 100 μm and glass fibers, wherein the content of aerogel is not less than 30%, and the usage proportion of the aerogel composite powder having particle sizes of 5-40 μm, 40-70 μm, and 70-100 μm is 3: 2: 1.
tests prove that the magnesium oxysulfate heat-insulating and fireproof plate obtained in the embodiment has the heat conductivity coefficient of 0.08W/(m.K) and the density of 880kg/m3The fireproof grade is A1 grade, the water absorption rate is 8.9 percent, the breaking strength is 9.1MPa, and the softening coefficient is 0.95.
Example 2
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board specifically comprises the following steps:
44kg of magnesium sulfate heptahydrate was added to 33kg of water, and the mixture was sufficiently stirred and dissolved to obtain a magnesium sulfate solution. Gradually adding the mixture into a mixed powder material which is prepared by uniformly mixing 1.0kg of EVA rubber powder, 1.0kg of citric acid and 15kg of aerogel composite powder, and performing high-speed dispersion for 60min by a high-speed dispersion machine at a rotating speed which is gradually increased by 300-3000r/min to obtain a modified magnesium sulfate solution. And then adding 38kg of light-burned magnesia powder, fully stirring for 5min to form uniform slurry, conveying the slurry into a plate making machine for template filling, covering and rolling an alkali-resistant glass fiber non-woven felt on two sides, gradually solidifying to obtain a wet plate, and cutting and naturally curing the wet plate to obtain the magnesium oxysulfate plate, wherein as shown in figure 2, a diagram A is a common magnesium oxysulfate plate, and a diagram B is an aerogel modified magnesium oxysulfate plate prepared by the invention.
The gel composite powder used in this embodiment is a powder mixture of silica having an average particle size of less than 100 μm and glass fibers, which is obtained by shredding and ball-milling an aerogel composite coiled material, wherein the content of aerogel is not less than 30%, and the usage proportion of the aerogel composite powder having particle sizes of 5-40 μm, 40-70 μm, and 70-100 μm is 4: 2: 1.
tests prove that the magnesium oxysulfate heat-insulating and fireproof plate obtained in the embodiment has the heat conductivity coefficient of 0.07W/(m.K) and the density of 850kg/m3The fireproof grade is A1 grade, the water absorption rate is 5.7 percent, the breaking strength is 8.7MPa, and the softening coefficient is 0.97.
Example 3
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board specifically comprises the following steps:
magnesium sulfate solution was obtained by adding 39kg of industrial magnesium sulfate heptahydrate to 33kg of water and sufficiently stirring and dissolving the mixture. Gradually adding the mixture into a mixed powder material which is formed by uniformly stirring 0.5kg of EVA rubber powder, 1.0kg of citric acid and 13kg of aerogel composite powder, and performing high-speed dispersion for 60min by a high-speed dispersion machine at a rotating speed which is gradually increased by 300-3000r/min to obtain a modified magnesium sulfate solution. And then adding 38kg of light-burned magnesia powder, fully stirring for 5min to form uniform slurry, conveying the slurry into a plate making machine for template filling, covering alkali-resistant glass fiber mesh cloth on two sides, flattening by a roller, gradually solidifying to obtain a wet plate, and cutting and naturally curing the wet plate to obtain the magnesium oxysulfide plate.
The gel composite powder used in this embodiment is a powder mixture of silica having an average particle size of less than 100 μm and glass fibers, which is obtained by shredding and ball-milling an aerogel composite coiled material, wherein the content of aerogel is not less than 30%, and the usage proportion of the aerogel composite powder having particle sizes of 5-40 μm, 40-70 μm, and 70-100 μm is 3: 3: 1.
tests prove that the magnesium oxysulfate heat-insulating and fireproof plate obtained in the embodiment has the heat conductivity coefficient of 0.073W/(m.K) and the density of 870kg/m3The fireproof grade is A1 grade, the water absorption rate is 5.7 percent, the breaking strength is 10.1MPa, and the softening coefficient is 0.95.
Example 4
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board specifically comprises the following steps:
magnesium sulfate solution was obtained by adding 34kg of industrial magnesium sulfate heptahydrate to 33kg of water and sufficiently stirring and dissolving the mixture. Gradually adding the mixture into a mixed powder material which is prepared by uniformly mixing 0.5kg of EVA rubber powder, 1.0kg of citric acid and 15kg of aerogel composite powder, and performing high-speed dispersion for 60min by a high-speed dispersion machine at a rotating speed which is gradually increased by 300-3000r/min to obtain a modified magnesium sulfate solution. And then adding 38kg of light-burned magnesia powder, fully stirring for 5min to form uniform slurry, conveying the slurry into a plate making machine for template filling, covering alkali-resistant glass fiber mesh cloth on two sides, flattening by a roller, gradually solidifying to obtain a wet plate, and cutting and naturally curing the wet plate to obtain the magnesium oxysulfide plate.
The gel composite powder used in this embodiment is a powder mixture of silica having an average particle size of less than 100 μm and glass fibers, which is obtained by shredding and ball-milling an aerogel composite coiled material, wherein the content of aerogel is not less than 30%, and the usage proportion of the aerogel composite powder having particle sizes of 5-40 μm, 40-70 μm, and 70-100 μm is 4: 2: 2.
tests prove that the magnesium oxysulfate heat-insulating and fireproof plate obtained in the embodiment has the heat conductivity coefficient of 0.076W/(m.K) and the density of 850kg/m3The fireproof grade is A1 grade, the water absorption rate is 5.2 percent, the breaking strength is 9.5MPa, and the softening coefficient is 0.97.
Example 5
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board specifically comprises the following steps:
magnesium sulfate solution was obtained by adding 34kg of industrial magnesium sulfate heptahydrate to 33kg of water and sufficiently stirring and dissolving the mixture. Gradually adding the mixture into a mixed powder material which is prepared by uniformly mixing 0.5kg of EVA rubber powder, 1.0kg of citric acid and 15kg of aerogel composite powder, and performing high-speed dispersion for 60min by a high-speed dispersion machine at a rotating speed which is gradually increased by 300-3000r/min to obtain a modified magnesium sulfate solution. And then adding 19kg of light-burned magnesia powder, fully stirring for 5min to form uniform slurry, conveying the slurry into a plate making machine for template filling, covering alkali-resistant glass fiber mesh cloth on two sides, flattening by a roller, gradually solidifying to obtain a wet plate, and cutting and naturally curing the wet plate to obtain the magnesium oxysulfide plate.
The gel composite powder used in this embodiment is a powder mixture of silica having an average particle size of less than 100 μm and glass fibers, which is obtained by shredding and ball-milling an aerogel composite coiled material, wherein the content of aerogel is not less than 30%, and the usage proportion of the aerogel composite powder having particle sizes of 5-40 μm, 40-70 μm, and 70-100 μm is 3: 3: 1.
tests prove that the magnesium oxysulfate heat-insulating and fireproof plate obtained in the embodiment has the heat conductivity coefficient of 0.73W/(m.K) and the density of 840kg/m3The fireproof grade is A1 grade, the water absorption is 5.7 percent, the breaking strength is 8.0MPa, and the softening coefficient is 0.97.
Example 6
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board is similar to that in embodiment 1, and is different from the preparation method of the aerogel modified magnesium oxysulfate fireproof insulation board, and the aerogel modified magnesium oxysulfate fireproof insulation board is prepared from the following raw materials, by weight, 34 parts of industrial magnesium sulfate heptahydrate, 19 parts of light-burned magnesium oxide powder, 10 parts of aerogel composite powder, 0.5 part of EVA rubber powder, 0.8 part of citric acid and 22 parts of water.
Example 7
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board is similar to that in embodiment 1, and is different from the preparation method of the aerogel modified magnesium oxysulfate fireproof insulation board, and the aerogel modified magnesium oxysulfate fireproof insulation board is prepared from the following raw materials, by weight, 36 parts of industrial magnesium sulfate heptahydrate, 22 parts of light-burned magnesium oxide powder, 11 parts of aerogel composite powder, 0.6 part of EVA rubber powder, 1 part of citric acid and 25 parts of water.
Example 8
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board is similar to that in embodiment 1, and is different from the preparation method of the aerogel modified magnesium oxysulfate fireproof insulation board, and the aerogel modified magnesium oxysulfate fireproof insulation board is prepared from the following raw materials, by weight, 38 parts of industrial magnesium sulfate heptahydrate, 30 parts of light-burned magnesium oxide powder, 13 parts of aerogel composite powder, 0.7 part of EVA rubber powder, 1.2 parts of citric acid and 28 parts of water.
Example 9
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board is similar to that in embodiment 1, and is different from the preparation method of the aerogel modified magnesium oxysulfate fireproof insulation board, and the aerogel modified magnesium oxysulfate fireproof insulation board is prepared from the following raw materials, by weight, 42 parts of industrial magnesium sulfate heptahydrate, 35 parts of light-burned magnesium oxide powder, 14 parts of aerogel composite powder, 0.8 part of EVA rubber powder, 1.4 parts of citric acid and 30 parts of water.
Example 10
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board is similar to that in embodiment 1, and is different from the preparation method of the aerogel modified magnesium oxysulfate fireproof insulation board, and the aerogel modified magnesium oxysulfate fireproof insulation board is prepared from the following raw materials, by weight, 44 parts of industrial magnesium sulfate heptahydrate, 38 parts of light-burned magnesium oxide powder, 15 parts of aerogel composite powder, 1.0 part of EVA rubber powder, 1.5 parts of citric acid and 33 parts of water.
Example 11
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board, which is similar to that in example 1, except that the content of active magnesium oxide in light-burned magnesium oxide powder is 85%.
Example 12
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board, which is similar to that in example 1, except that the content of active magnesium oxide in light-burned magnesium oxide powder is 90%.
Example 13
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board, which is similar to that in example 1, except that the content of active magnesium oxide in light-burned magnesium oxide powder is 95%.
Example 14
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board is similar to that in example 1, except that the aerogel composite powder has a grain size of 5-40 μm, 40-70 μm and a dosage proportion of 70-100 μm of 4: 2: 2.
example 15
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board is similar to that in example 1, except that the aerogel composite powder has a grain size of 5-40 μm, 40-70 μm and a dosage proportion of 70-100 μm of 4: 3: 1.
example 16
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board is similar to that in example 1, except that the aerogel composite powder has a grain size of 5-40 μm, 40-70 μm and a dosage proportion of 70-100 μm of 4: 3: 2.
example 17
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board, which is similar to that in embodiment 1, except that the dosage ratio of silicon dioxide to glass fiber in aerogel composite powder is 1: 1.
Example 18
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board is similar to that in embodiment 1, except that the dosage ratio of silicon dioxide to glass fiber in aerogel composite powder is 1: 3.
Example 19
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board, which is similar to that in embodiment 1, except that the dosage ratio of silicon dioxide to glass fiber in aerogel composite powder is 3: 2.
Example 20
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board, which is similar to that in embodiment 1, except that the aerogel content in the aerogel composite powder is 30%.
Example 21
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board, which is similar to that in embodiment 1, except that the aerogel content in the aerogel composite powder is 35%.
Example 22
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board is similar to that in embodiment 1, except that the aerogel content in the aerogel composite powder is 40%.
Example 23
A preparation method of an aerogel modified magnesium oxysulfate fireproof insulation board, which is similar to that in embodiment 1, except that the aerogel content in the aerogel composite powder is 50%.
Example 6-the magnesium oxysulfate heat-insulating and fireproof plate prepared in example 23 has a thermal conductivity of 0.07-0.08W/(m.K), a density of 850-3The fireproof grade is A1 grade, the water absorption is 5.5-8%, the breaking strength is 8.7-9.5MPa, and the softening coefficient is 0.95-0.96.
The above embodiments are only illustrative and not restrictive, and any insubstantial modifications made by those skilled in the art based on the present invention shall fall within the scope of the present invention.

Claims (8)

1. The utility model provides an aerogel modified magnesium oxysulfate fireproof insulation board which characterized in that: the aerogel composite material is prepared from the following raw materials, by weight, 34-44 parts of industrial magnesium sulfate heptahydrate, 19-38 parts of light-burned magnesium oxide powder, 10-15 parts of aerogel composite powder, 0.5-1.0 part of EVA rubber powder, 0.8-1.5 parts of citric acid and 22-33 parts of water, wherein the aerogel composite powder is a powder mixture of silicon dioxide with an average particle size of less than 100 mu m and glass fibers, which is obtained by shredding and ball-milling an aerogel composite coiled material.
2. The aerogel modified magnesium oxysulfate fireproof insulation board of claim 1, wherein: the aerogel composite material is prepared from the following raw materials, by weight, 36-42 parts of industrial magnesium sulfate heptahydrate, 22-35 parts of light-burned magnesium oxide powder, 11-14 parts of aerogel composite powder, 0.6-0.8 part of EVA rubber powder, 1-1.4 parts of citric acid and 25-30 parts of water.
3. The aerogel modified magnesium oxysulfate fireproof insulation board of claim 2, wherein: the aerogel composite powder is a powder formed by mixing silicon dioxide and glass fibers, and the dosage ratio of the silicon dioxide to the glass fibers is 1-3: 1-3.
4. The aerogel modified magnesium oxysulfate fireproof insulation board according to claim 3, characterized in that: the aerogel content in the aerogel composite powder is more than or equal to 30 percent.
5. The preparation method of the aerogel modified magnesium oxysulfate fireproof insulation board is characterized by comprising the following steps of:
(1) preparing a magnesium sulfate solution;
(2) uniformly mixing EVA rubber powder, citric acid and aerogel composite powder, adding the magnesium sulfate solution obtained in the step (1), and dispersing at a high speed to obtain a modified magnesium sulfate solution, wherein the aerogel composite powder is a powder obtained by mixing silica with glass fiber, the silica with the average particle size of less than 100 mu m, and the aerogel composite powder is obtained by shredding and ball-milling an aerogel composite coiled material, and the content of aerogel is not lower than 30%;
(3) adding light-burned magnesia powder into the modified magnesium sulfate solution obtained in the step (3), fully stirring to form uniform slurry, conveying the slurry into a plate making machine for template filling, covering cloth on two sides, flattening by a roller, gradually solidifying to obtain a wet plate, and cutting and maintaining the wet plate to obtain the magnesium oxysulfate plate.
6. The preparation method of the aerogel modified magnesium oxysulfate fireproof insulation board according to claim 5, characterized by comprising the following steps: the aerogel composite material is prepared from the following raw materials, by weight, 34-44 parts of industrial magnesium sulfate heptahydrate, 19-38 parts of light-burned magnesium oxide powder, 10-15 parts of aerogel composite powder, 0.5-1.0 part of EVA rubber powder, 0.8-1.5 parts of citric acid and 22-33 parts of water.
7. The preparation method of the aerogel modified magnesium oxysulfate fireproof insulation board according to claim 5, characterized by comprising the following steps: and (2) performing high-speed dispersion for 10-60min by a high-speed dispersion machine 300-3000 r/min.
8. The preparation method of the aerogel modified magnesium oxysulfate fireproof insulation board according to claim 5, characterized by comprising the following steps: the aerogel composite powder in the step (2) is a powder formed by mixing silicon dioxide with glass fiber, wherein the average particle size of the silicon dioxide is less than 100 micrometers, the silicon dioxide is obtained by shredding and ball milling an aerogel composite coiled material, and the dosage proportion of the aerogel composite powder with the particle size of 5-40 micrometers, 40-70 micrometers and 70-100 micrometers is 3-4: 2-3: 1-2.
CN202111411550.9A 2021-11-25 2021-11-25 Aerogel modified magnesium oxysulfate fireproof insulation board and preparation method thereof Active CN113979715B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE796959R (en) * 1972-04-27 1973-09-19 Acec HEAT-INSULATED PLATES AND SHELLS AND THEIR MANUFACTURING PROCESS
CN102924036A (en) * 2012-11-22 2013-02-13 易科美德（天津）环保建材有限公司 Magnesium-base aerogel compound fireproofing thermal-insulation plate and preparation method thereof
CN107265438A (en) * 2017-06-14 2017-10-20 中国科学技术大学 Carbon nano-fiber aeroge and preparation method thereof derived from a kind of bacteria cellulose
CN108751803A (en) * 2018-08-22 2018-11-06 响水华夏特材科技发展有限公司 Utilize the heat-insulating plate and technique of the manufacture of waste and old aerogel material
CN109266139A (en) * 2018-08-22 2019-01-25 响水华夏特材科技发展有限公司 Utilize the adiabatic coating and technique of the production of waste and old aerogel material
CN110117000A (en) * 2019-06-14 2019-08-13 中国科学技术大学 A kind of bulk carbon nano-fiber aeroge and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE796959R (en) * 1972-04-27 1973-09-19 Acec HEAT-INSULATED PLATES AND SHELLS AND THEIR MANUFACTURING PROCESS
CN102924036A (en) * 2012-11-22 2013-02-13 易科美德（天津）环保建材有限公司 Magnesium-base aerogel compound fireproofing thermal-insulation plate and preparation method thereof
CN107265438A (en) * 2017-06-14 2017-10-20 中国科学技术大学 Carbon nano-fiber aeroge and preparation method thereof derived from a kind of bacteria cellulose
CN108751803A (en) * 2018-08-22 2018-11-06 响水华夏特材科技发展有限公司 Utilize the heat-insulating plate and technique of the manufacture of waste and old aerogel material
CN109266139A (en) * 2018-08-22 2019-01-25 响水华夏特材科技发展有限公司 Utilize the adiabatic coating and technique of the production of waste and old aerogel material
CN110117000A (en) * 2019-06-14 2019-08-13 中国科学技术大学 A kind of bulk carbon nano-fiber aeroge and preparation method thereof

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