CN110723955A - Fireproof material and preparation method thereof - Google Patents
Fireproof material and preparation method thereof Download PDFInfo
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- CN110723955A CN110723955A CN201911221201.3A CN201911221201A CN110723955A CN 110723955 A CN110723955 A CN 110723955A CN 201911221201 A CN201911221201 A CN 201911221201A CN 110723955 A CN110723955 A CN 110723955A
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- Prior art keywords
- dihydrogen phosphate
- fireproof material
- alumina
- wollastonite
- inorganic refractory
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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
- C04B28/34—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 cold phosphate binders
- C04B28/342—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 cold phosphate binders the phosphate binder being present in the starting composition as a mixture of free acid and one or more reactive oxides
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation 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
- C04B2111/2038—Resistance against physical degradation
-
- 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Fireproofing Substances (AREA)
- Ceramic Products (AREA)
Abstract
The invention provides a fireproof material which is prepared from the following raw materials: aluminum dihydrogen phosphate, alumina, inorganic refractory fiber, wollastonite, barium sulfate, magnesia, a retarder, an auxiliary agent and water. The aluminum-magnesium phosphate amorphous fireproof material prepared by the invention has high hardness and short condensation curing time, can be cured at normal temperature, and improves the construction efficiency; aluminum dihydrogen phosphate is used as an adhesive, and a refractory filler is added, so that the fire resistance is improved; inorganic refractory fiber is added to increase the fracture resistance and toughness; wear-resistant filler is added to enhance the wear-resistant performance. The invention also provides a preparation method of the fireproof material.
Description
Technical Field
The invention relates to the technical field of fire prevention, in particular to a fire-proof material and a preparation method thereof.
Background
At present, the unshaped fireproof material has been widely applied due to the advantages of simple preparation, convenient construction, obvious effect and the like, and is particularly common in the aspects of building fire prevention, tunnel fire prevention, steel structure fire prevention, equipment fire prevention and the like. The existing unshaped fireproof material has long curing time in the construction process, and some materials need high-temperature curing, so the construction efficiency is low; meanwhile, the existing material has the advantages of small hardness, poor toughness, no abrasion resistance and short service life; in addition, the existing material has a complex formula, most of the existing materials are mixed or generate odorous toxic substances, the environment is influenced, and the harm is generated to the human health. Therefore, how to improve the performance of the fireproof material to make it better applied becomes a hot spot of research for those skilled in the art.
Disclosure of Invention
In view of this, the present invention provides a fire-retardant material and a preparation method thereof, and the fire-retardant material provided by the present invention has good performance.
The invention provides a fireproof material which is prepared from the following raw materials:
aluminum dihydrogen phosphate, alumina, inorganic refractory fiber, wollastonite, barium sulfate, magnesia, a retarder, an auxiliary agent and water.
Preferably, the inorganic refractory fiber is selected from one or more of glass fiber, aluminum silicate fiber, magnesium silicate fiber, zirconium-containing fiber and alumina fiber.
Preferably, the diameter of the inorganic refractory fiber is 1-10 μm; the length is 1-20 mm.
Preferably, the retarder is one or more selected from borax, boric acid, urea and sodium tripolyphosphate.
Preferably, the auxiliary agent is selected from one or more of a dispersing agent, a leveling agent, a film forming agent and a defoaming agent.
Preferably, the mass ratio of the aluminum dihydrogen phosphate, the alumina, the inorganic refractory fiber, the wollastonite, the barium sulfate, the magnesia, the retarder, the auxiliary agent and the water is (10-20): (10-20): (10-20): (3-10): (3-10): (3-10): (0.5-2): (0.5-1.5): (10-50).
Preferably, the particle sizes of the alumina, the wollastonite, the barium sulfate and the magnesia are independently selected from 80 to 500 meshes.
The invention provides a preparation method of the fireproof material in the technical scheme, which comprises the following steps:
mixing aluminum dihydrogen phosphate with water to obtain an aluminum dihydrogen phosphate solution;
mixing inorganic refractory fiber and the aluminum dihydrogen phosphate solution to obtain a dispersion liquid;
and mixing alumina, wollastonite, barium sulfate, magnesia, a retarder, an auxiliary agent and the dispersion liquid to obtain the fireproof material.
Preferably, the inorganic refractory fiber and the aluminum dihydrogen phosphate solution are mixed under the condition of stirring, and the stirring speed is 550-650 r/min; the stirring time is 8-12 min.
Preferably, the alumina, the wollastonite, the barium sulfate, the magnesia, the retarder, the auxiliary agent and the dispersion liquid are mixed under the condition of stirring, and the stirring speed is 750-850 r/min; the stirring time is 10-20 min.
The aluminum-magnesium phosphate amorphous fireproof material prepared by the invention has high hardness and short condensation curing time, can be cured at normal temperature, and improves the construction efficiency; aluminum dihydrogen phosphate (instead of potassium dihydrogen phosphate) is used as a bonding agent, and a refractory filler is added, so that the fire resistance is improved; inorganic refractory fiber is added to increase the fracture resistance and toughness; wear-resistant filler is added to enhance the wear-resistant performance. The fireproof material provided by the invention reduces the curing time and can be cured at normal temperature; the hardness, the breaking resistance, the toughness and the wear resistance are improved; the fire resistance is increased; is environment-friendly.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other examples, which may be modified or appreciated by those of ordinary skill in the art based on the examples given herein, are intended to be within the scope of the present invention.
The invention provides a fireproof material which is prepared from the following raw materials:
aluminum dihydrogen phosphate, alumina, inorganic refractory fiber, wollastonite, barium sulfate, magnesia, a retarder, an auxiliary agent and water.
The invention uses aluminum dihydrogen phosphate instead of potassium dihydrogen phosphate, thereby reducing potassium element which is easy to generate low-melting substances and improving the fire resistance.
In the present invention, the inorganic refractory fiber is preferably selected from one or more of glass fiber, aluminum silicate fiber, magnesium silicate fiber, zirconium-containing fiber, and alumina fiber. In the invention, the diameter of the inorganic refractory fiber is preferably 1-10 μm, more preferably 2-8 μm, and most preferably 3-6 μm; the length of the inorganic refractory fiber is preferably 1-20 mm, more preferably 5-15 mm, and most preferably 8-12 mm. In the present invention, the inorganic refractory fiber can increase the fire resistance, the folding resistance and the toughness of the fireproof material.
In the invention, the alumina and wollastonite can increase the fire resistance of the fireproof material.
In the invention, the barium sulfate can increase the wear resistance of the fireproof material.
In the present invention, the magnesite is preferably light-burned magnesite. The proportion of the light-burned magnesite added in the invention is relatively low, so that the fireproof performance is ensured, and the high-strength and quick-curing unshaped fireproof material at normal temperature can be formed at the proportion, so that the fireproof performance is better.
In the present invention, the retarder can slow down the setting time so as to allow for construction time. In the invention, the retarder is preferably selected from one or more of borax, boric acid, urea and sodium tripolyphosphate.
In the present invention, the auxiliary agent is preferably one or more selected from a dispersing agent, a leveling agent, a film forming agent and a defoaming agent.
In the invention, the particle sizes of the alumina, the wollastonite, the barium sulfate and the magnesia are independent, preferably 80-500 meshes, more preferably 100-400 meshes, and most preferably 200-300 meshes.
In the invention, the mass ratio of the aluminum dihydrogen phosphate, the alumina, the inorganic refractory fiber, the wollastonite, the barium sulfate, the magnesia, the retarder, the auxiliary agent and the water is preferably (10-20): (10-20): (10-20): (3-10): (3-10): (3-10): (0.5-2): (0.5-1.5): (10-50), more preferably (12-18): (12-18): (12-18): (4-8): (4-8): (4-8): (0.8-1.4): (0.8-1.2): (20-40), most preferably (14-16): (14-16): (14-16): (5-7): (5-7): (5-7): (1-1.2): 1: (25-35).
The aluminum-magnesium phosphate amorphous fireproof material prepared by the invention has high hardness and short condensation curing time, can be cured at normal temperature, and improves the construction efficiency; aluminum dihydrogen phosphate (instead of potassium dihydrogen phosphate) is used as a bonding agent, and a refractory filler is added, so that the fire resistance is improved; inorganic refractory fiber is added to increase the fracture resistance and toughness; wear-resistant filler is added to enhance the wear-resistant performance. The fireproof material provided by the invention reduces the curing time and can be cured at normal temperature; the hardness, the breaking resistance, the toughness and the wear resistance are improved; the fire resistance is increased; is environment-friendly.
The invention provides a preparation method of the fireproof material in the technical scheme, which comprises the following steps:
mixing aluminum dihydrogen phosphate with water to obtain an aluminum dihydrogen phosphate solution;
mixing inorganic refractory fiber and the aluminum dihydrogen phosphate solution to obtain a dispersion liquid;
and mixing alumina, wollastonite, barium sulfate, magnesia, a retarder, an auxiliary agent and the dispersion liquid to obtain the fireproof material.
In the invention, the inorganic refractory fiber and the aluminum dihydrogen phosphate solution are preferably mixed under stirring conditions, so that the inorganic refractory fiber is uniformly mixed in the aluminum dihydrogen phosphate solution; the stirring speed is preferably 550-650 r/min, more preferably 580-620 r/min, and most preferably 600 r/min; the stirring time is preferably 8-12 min, and more preferably 10 min.
In the invention, the mixing of the alumina, the wollastonite, the barium sulfate, the magnesia, the retarder, the auxiliary agent and the dispersion liquid is preferably carried out under the condition of stirring, and the stirring speed is preferably 750-850 r/min, more preferably 780-820 r/min and most preferably 800 r/min; the stirring time is preferably 10-20 min, and more preferably 15 min.
In the invention, the types and the dosage proportions of the aluminum dihydrogen phosphate, the alumina, the inorganic refractory fiber, the wollastonite, the barium sulfate, the magnesia, the retarder, the auxiliary agent and the water are consistent with the technical scheme, and are not described again.
According to the invention, a large amount of inorganic fibers, alumina, wollastonite and other refractory materials are added into a high-strength magnesium phosphate material, so that the high-strength magnesium phosphate material is applied to the field of fire prevention; according to the invention, by adding the inorganic fiber, the fire resistance is increased, and the fracture resistance and toughness of the material are also increased; the refractory material provided by the invention reduces the curing time, can be cured at normal temperature, and has high hardness and excellent fireproof performance; the invention uses aluminum dihydrogen phosphate to further improve the fire resistance.
The raw materials used in the following examples of the present invention are all commercially available products.
Example 1
Firstly, dissolving 16 wt% of aluminum dihydrogen phosphate in 33 wt% of water to form an aluminum dihydrogen phosphate solution;
pouring the prepared aluminum dihydrogen phosphate solution into a stirring tank, slowly adding 16 wt% of glass fiber, and stirring at a speed of 600r/min for 10min to uniformly disperse the glass fiber in the solution to obtain a dispersion liquid;
respectively adding 15 wt% of alumina, 7 wt% of wollastonite, 6 wt% of barium sulfate, 5 wt% of light calcined magnesite, 1 wt% of borax, 0.5 wt% of dispersing agent (polyvinyl alcohol) and 0.5 wt% of film forming agent (dodecyl alcohol ester) into the dispersion liquid, fully and uniformly mixing, and stirring at the speed of 800r/min for 15min to obtain the aluminum magnesium phosphate amorphous fireproof material.
According to the method of GB 28375-2012 'fireproof coating for concrete structure', the performance of the magnesium aluminum phosphate amorphous fireproof material prepared in the embodiment 1 of the invention is detected, the drying time (surface drying) is 2h, and the dry density is 622kg/m3The compressive strength is 9MPa, and the fire resistance is more than or equal to 3 h.
Example 2
Firstly, dissolving 18 wt% of aluminum dihydrogen phosphate in 35 wt% of water to form an aluminum dihydrogen phosphate solution;
pouring the prepared aluminum dihydrogen phosphate solution into a stirring tank, slowly adding 14 wt% of aluminum silicate fibers, and stirring at 580r/min for 8min to uniformly disperse the aluminum silicate fibers in the solution to obtain a dispersion liquid;
respectively adding 12 wt% of alumina, 7 wt% of wollastonite, 6 wt% of barium sulfate, 5 wt% of light calcined magnesite, 1.5 wt% of boric acid, 0.7 wt% of dispersing agent (polyvinyl alcohol), 0.4 wt% of leveling agent (organic silicon) and 0.4 wt% of defoaming agent (polyether) into the dispersion liquid, fully and uniformly mixing, and stirring at the speed of 780r/min for 12min to obtain the magnesium aluminum phosphate amorphous fireproof material.
The properties of the amorphous fireproofing composition made according to example 2 of the invention were measured according to the method of example 1, with a drying time (tack-free) of 2.5h and a dry density of 585kg/m3The compressive strength is 11MPa, and the fire resistance is more than or equal to 2.5 h.
Example 3
Firstly, dissolving 15 wt% of aluminum dihydrogen phosphate in 30 wt% of water to form an aluminum dihydrogen phosphate solution;
pouring the prepared aluminum dihydrogen phosphate solution into a stirring tank, slowly adding 18 wt% of magnesium silicate fiber, and stirring at 620r/min for 12min to uniformly disperse the magnesium silicate fiber in the solution to obtain a dispersion liquid;
respectively adding 13 wt% of alumina, 7 wt% of wollastonite, 7 wt% of barium sulfate, 8 wt% of light-burned magnesite, 1 wt% of urea and 1 wt% of film-forming agent (dodecyl alcohol ester) into the dispersion, fully and uniformly mixing, and stirring at the speed of 820r/min for 16min to obtain the amorphous fireproof material of the aluminum magnesium phosphate.
The properties of the amorphous fireproofing material of magnesium aluminum phosphate prepared in example 3 according to the invention were determined according to the method of example 1, with a drying time (tack-free) of 1.5h and a dry density of 636kg/m3The compressive strength is 14MPa, and the fire resistance is more than or equal to 3.5 h.
From the above examples, the present invention provides a fire-retardant material, which is prepared from the following raw materials: aluminum dihydrogen phosphate, alumina, inorganic refractory fiber, wollastonite, barium sulfate, magnesia, a retarder, an auxiliary agent and water. The aluminum-magnesium phosphate amorphous fireproof material prepared by the invention has high hardness and short condensation curing time, can be cured at normal temperature, and improves the construction efficiency; aluminum dihydrogen phosphate is used as an adhesive, and a refractory filler is added, so that the fire resistance is improved; inorganic refractory fiber is added to increase the fracture resistance and toughness; wear-resistant filler is added to enhance the wear-resistant performance.
While only the preferred embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A fireproof material is prepared from the following raw materials:
aluminum dihydrogen phosphate, alumina, inorganic refractory fiber, wollastonite, barium sulfate, magnesia, a retarder, an auxiliary agent and water.
2. The fire protection material of claim 1, wherein the inorganic refractory fibers are selected from one or more of glass fibers, aluminum silicate fibers, magnesium silicate fibers, zirconium-containing fibers, and alumina fibers.
3. The fireproof material according to claim 1, wherein the inorganic refractory fibers have a diameter of 1 to 10 μm; the length is 1-20 mm.
4. The fireproof material of claim 1, wherein the retarder is selected from one or more of borax, boric acid, urea and sodium tripolyphosphate.
5. The fireproof material of claim 1, wherein the auxiliary agent is selected from one or more of a dispersant, a leveling agent, a film forming agent and a defoaming agent.
6. The fireproof material according to claim 1, wherein the mass ratio of the aluminum dihydrogen phosphate, the aluminum oxide, the inorganic refractory fiber, the wollastonite, the barium sulfate, the magnesia, the retarder, the auxiliary agent and the water is (10-20): (10-20): (10-20): (3-10): (3-10): (3-10): (0.5-2): (0.5-1.5): (10-50).
7. The fire retardant material of claim 1, wherein the particle sizes of the alumina, wollastonite, barium sulfate and magnesia are independently selected from 80 to 500 mesh.
8. A method of making the fire-blocking material of claim 1, comprising:
mixing aluminum dihydrogen phosphate with water to obtain an aluminum dihydrogen phosphate solution;
mixing inorganic refractory fiber and the aluminum dihydrogen phosphate solution to obtain a dispersion liquid;
and mixing alumina, wollastonite, barium sulfate, magnesia, a retarder, an auxiliary agent and the dispersion liquid to obtain the fireproof material.
9. The method according to claim 8, wherein the mixing of the inorganic refractory fiber and the aluminum dihydrogen phosphate solution is carried out under stirring at a speed of 550 to 650 r/min; the stirring time is 8-12 min.
10. The method according to claim 8, wherein the mixing of the alumina, the wollastonite, the barium sulfate, the magnesia, the retarder, the auxiliary agent and the dispersion liquid is carried out under the condition of stirring, and the stirring speed is 750-850 r/min; the stirring time is 10-20 min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517746A (en) * | 2020-05-13 | 2020-08-11 | 正升环境科技股份有限公司 | Fireproof sound absorption plate and preparation method thereof |
| CN112552015A (en) * | 2020-12-15 | 2021-03-26 | 辽宁科大中驰镁建材科技有限公司 | Magnesium phosphate fireproof coating |
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| CN105565762A (en) * | 2015-12-22 | 2016-05-11 | 江苏科悦新材料有限公司 | Lightweight class-A fireproof composite board core and manufacturing method thereof |
| CN105565835A (en) * | 2015-12-25 | 2016-05-11 | 山东鲁阳节能材料股份有限公司 | Novel composite coating layer and preparation method thereof |
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2019
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| CN105565762A (en) * | 2015-12-22 | 2016-05-11 | 江苏科悦新材料有限公司 | Lightweight class-A fireproof composite board core and manufacturing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517746A (en) * | 2020-05-13 | 2020-08-11 | 正升环境科技股份有限公司 | Fireproof sound absorption plate and preparation method thereof |
| CN112552015A (en) * | 2020-12-15 | 2021-03-26 | 辽宁科大中驰镁建材科技有限公司 | Magnesium phosphate fireproof coating |
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| CN110723955B (en) | 2022-02-15 |
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