CN111233420A - Cement-based fireproof material with quick setting performance and construction method thereof - Google Patents
Cement-based fireproof material with quick setting performance and construction method thereof Download PDFInfo
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- CN111233420A CN111233420A CN202010162650.1A CN202010162650A CN111233420A CN 111233420 A CN111233420 A CN 111233420A CN 202010162650 A CN202010162650 A CN 202010162650A CN 111233420 A CN111233420 A CN 111233420A
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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
- C04B28/14—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 calcium sulfate cements
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
- C04B28/146—Calcium sulfate hemi-hydrate with a specific crystal form alpha-hemihydrate
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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
- C04B11/00—Calcium sulfate cements
- C04B11/02—Methods and apparatus for dehydrating gypsum
- C04B11/028—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained
- C04B11/032—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained for the wet process, e.g. dehydrating in solution or under saturated vapour conditions, i.e. to obtain alpha-hemihydrate
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00008—Obtaining or using nanotechnology related materials
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
- C04B2111/00155—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
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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
- 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
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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
- 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
- C04B2111/23—Acid resistance, e.g. against acid air or rain
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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
- 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
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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
- 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
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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
- 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 belongs to the technical field of building materials, and particularly relates to a cement-based fireproof material with quick setting performance and a construction method thereof, wherein the cement-based fireproof material with the quick setting performance is a two-component system and comprises a component A and a component B, the component A comprises, by weight, 30-100 parts of cement, 0-30 parts of polystyrene particles, 1-15 parts of fibers, 0-30 parts of vermiculite, 50-100 parts of tricalcium aluminate, 30-50 parts of semi-hydrated gypsum, 1-5 parts of graphite, 1-5 parts of α -olefin sodium sulfonate, 1-5 parts of a cement additive, 1-5 parts of hydroxypropyl methyl cellulose and 1-3 parts of a filler, the component B is modified aluminum hydroxide, and the component B accounts for 5-30% of the weight of the component A.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a cement-based fireproof material with quick setting performance and a construction method.
Background
The cement accelerator is a chemical admixture which can significantly increase the setting speed of cement when added to cement concrete in a small amount, and is also called an accelerator. The cement accelerator is added, so that the sequential spraying thickness of sprayed concrete can be increased, the time interval of secondary spraying is shortened, and the early strength of the concrete is improved simultaneously, so that the supporting resistance is provided in time. The cement accelerator is widely applied to construction sites with the requirements of rapid solidification and rapid hardening, such as underground mining, roadway support, traffic tunnels, field construction, water conservancy and hydropower, culvert, diversion tunnel and other underground engineering for concrete spraying construction, emergency repair and other engineering. At present, the cement-based fireproof materials in the market are sprayed because the phenomenon of sagging can occur due to excessively thick spraying thickness, so the aim of fire prevention is mostly achieved through multiple spraying, but the next spraying can be carried out after 4-8 hours of interval after each spraying, so a large amount of time and labor are consumed in the construction process, the construction cost is excessively high, and the efficiency is low.
Disclosure of Invention
In order to solve the technical problem, the invention provides a cement-based fireproof material with quick setting performance, which is a two-component system and comprises a component A and a component B, wherein the component A comprises, by weight, 30-100 parts of cement, 0-30 parts of polystyrene particles, 1-15 parts of fibers, 0-30 parts of vermiculite, 50-100 parts of tricalcium aluminate, 30-50 parts of semi-hydrated gypsum, 1-5 parts of graphite, 1-5 parts of α -olefin sodium sulfonate, 1-5 parts of a cement admixture, 1-5 parts of hydroxypropyl methyl cellulose and 1-3 parts of a filler, the component B is modified aluminum hydroxide, and the component B accounts for 5-30% of the weight of the component A.
Preferably, the cement-based fireproof material with the quick setting property is a two-component system and respectively comprises a component A and a component B, wherein the component A comprises, by weight, 60-90 parts of cement, 10-22 parts of polystyrene particles, 5-12 parts of fibers, 8-22 parts of vermiculite, 60-80 parts of tricalcium aluminate, 40-50 parts of semi-hydrated gypsum, 2-5 parts of graphite, 2-4 parts of α -olefin sodium sulfonate, 2-4 parts of a cement admixture, 3-5 parts of hydroxypropyl methyl cellulose and 2-3 parts of a filler, the component B is modified aluminum hydroxide, and the component B accounts for 8-20% of the weight of the component A.
Preferably, the cement-based fireproof material with the quick setting performance is a two-component system and respectively comprises a component A and a component B, wherein the component A comprises 80 parts by weight of cement, 17 parts by weight of polystyrene particles, 10 parts by weight of fibers, 12 parts by weight of vermiculite, 80 parts by weight of tricalcium aluminate, 45 parts by weight of semi-hydrated gypsum, 4 parts by weight of graphite, 3 parts by weight of α -olefin sodium sulfonate, 4 parts by weight of cement admixture, 4 parts by weight of hydroxypropyl methyl cellulose and 2 parts by weight of filler, the quick setting agent further comprises 3 parts by weight of fly ash, the component B is modified aluminum hydroxide, and the component B accounts for 16% of the weight of the component A.
Preferably, the graphite is modified expandable graphite, and the preparation method of the modified expandable graphite comprises the following steps: adding the nanoscale montmorillonite, the expandable graphite and the gamma- (methacryloyloxy) propyl trimethoxy silane into water, stirring uniformly, heating to 100 ℃, reacting for 2 hours, filtering, washing and drying to obtain the modified expandable graphite, wherein the mass ratio of the nanoscale montmorillonite to the expandable graphite to the gamma- (methacryloyloxy) propyl trimethoxy silane is 5:1: 0.5.
Preferably, the semi-hydrated gypsum is α -semi-hydrated gypsum, and the preparation method of α -semi-hydrated gypsum comprises the steps of crushing massive dihydrate gypsum into powder, spraying an anticorrosive aqueous solution into the powder, adding the powder into a reaction kettle, introducing high-pressure steam into the reaction kettle, taking out the powder after 6 hours, aging the powder, and grinding the powder by a grinding machine to obtain the anticorrosive aqueous solution, wherein the anticorrosive aqueous solution comprises the following raw materials in parts by weight, namely 1 part of sodium acetate, 1 part of sodium bicarbonate, 10 parts of zinc chloride and 1000 parts of water, and the weight ratio of the anticorrosive aqueous solution to the dihydrate gypsum powder is 1: 3.
Preferably, the filler comprises one or a mixture of more of calcined kaolin, talcum powder, mica powder, asbestos powder, nano silicon dioxide and aluminum silicate.
Preferably, the cement admixture comprises the following components in parts by weight: 2 parts of triethanolamine, 1 part of glycerol, 2 parts of triisopropanolamine and 1 part of sodium fatty acid.
Preferably, the method for preparing the cement admixture comprises the following steps: adding triethanolamine, glycerol, triisopropanolamine and sodium fatty acid in corresponding parts by weight into water, heating the solution to 50 ℃, and uniformly stirring to obtain the water-soluble organic acid.
Preferably, the modified aluminum hydroxide is prepared by the following method: adding a certain amount of water into a reaction kettle, adding an inorganic flame retardant, aluminum sulfate and a surfactant into the reaction kettle, uniformly stirring, adding a certain amount of ammonia water into the reaction kettle until the pH value of a solution in the reaction kettle is 6.1-7.2, reacting for a certain time, filtering and drying to obtain a target product, wherein the temperature of the solution in the reaction kettle is always maintained at 30-45 ℃ in the preparation process, and the mass ratio of the water, the inorganic flame retardant, the aluminum sulfate and the surfactant is as follows: 10:1:1: 0.1; the inorganic flame retardant comprises one or a mixture of more of diammonium hydrogen phosphate, ammonium polyphosphate, red phosphorus, nano magnesium hydroxide, zinc borate and phosphate, and the surfactant comprises one or a mixture of more of Tween20, Tween21, polyoxyethylene nonyl phenol ether, polyoxyethylene 400 monolaurate, polyoxyethylene 40 stearate, polyoxyethylene lauryl ether, polyoxyethylene cetyl ether and polyoxyethylene fatty alcohol ether.
The construction method of the cement-based fireproof material with quick setting performance at least comprises the following steps: (1) uniformly mixing the materials in the component A, mixing water and the component A according to the mass ratio of (1.1-1.45) to 1, and uniformly stirring to obtain slurry; (2) mixing water and the component B according to the mass ratio of (1.4-1.6) to 1 to obtain a curing agent solution; (3) respectively adding the slurry and the curing agent solution into a double-group spraying machine so as to uniformly mix the curing agent solution and the slurry at a gun mouth; the mass ratio of the slurry to the curing agent solution is 1 (0.02-0.33); (4) and spraying a layer of the cement-based fireproof material on the base material, wherein the thickness of one-time spraying is 40-50 mm.
Compared with the prior art, the invention has the following advantages: the setting accelerator has low cost, effectively reduces the cost, accelerates the setting time and the early strength of a cement-based fireproof material by adding tricalcium aluminate, improves the sulfate corrosion resistance of cement by adding fly ash, and overcomes the defect that tricalcium aluminate easily causes poor sulfate resistance of cement; according to the invention, the expandable graphite is modified by the nano-scale montmorillonite, so that the agglomeration of the nano-scale montmorillonite is avoided, and the expansion multiple of the expandable graphite is increased, so that the flame retardance and the fire resistance time of the cement-based fireproof material are increased, and the fire resistance time can reach 4-5h under the condition of hydrocarbon fire temperature rise. The invention can realize one-time spraying with the thickness of 40-50mm without sagging, realize one-time spraying molding, reduce the labor amount of workers, save the waiting time in multiple spraying and improve the production efficiency.
Detailed Description
The contents of the present invention can be more easily understood by referring to the following detailed description of preferred embodiments of the present invention and examples included therein, and unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, and in the case of contradiction, the definitions in the present specification shall control. The term "prepared from … …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "meaning," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
The conjunction "consisting of … …" excludes any unspecified elements, steps or components. If used in a claim, this phrase is intended to claim as closed, meaning that it does not include materials other than those described, except in connection with the common journal of usage. When the phrase "consisting of … …" appears in a clause of the claimed subject matter rather than immediately following the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claims as a whole.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of values, with an upper limit preferred value and a lower limit preferred value, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.
Approximating language, as used herein throughout the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes portions that are literally received for modification without substantial change in the basic function to which the invention is related. Accordingly, the use of "about" to modify a numerical value means that the invention is not limited to the precise value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the present description and claims, range limitations may be combined and/or interchanged, including all sub-ranges contained therein if not otherwise stated.
In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.
In order to solve the above technical problems, a first aspect of the present invention provides a cement-based fireproofing material having quick setting properties,
the cement-based fireproof material with the quick setting property is a two-component system and comprises a component A and a component B, wherein the component A comprises, by weight, 30-100 parts of cement, 0-30 parts of polystyrene particles, 1-15 parts of fibers, 0-30 parts of vermiculite, 50-100 parts of tricalcium aluminate, 30-50 parts of semi-hydrated gypsum, 1-5 parts of graphite, 1-5 parts of α -olefin sodium sulfonate, 1-5 parts of a cement additive, 1-5 parts of hydroxypropyl methyl cellulose and 1-3 parts of a filler, the component B is modified aluminum hydroxide, and the component B accounts for 5-30% of the component A.
According to different preparation processes, the α -hemihydrate gypsum is divided into α -hemihydrate gypsum and β -hemihydrate gypsum, and has the characteristics of complete crystal face, low hydration heat, less water demand, high strength of hardened bodies and the like, so that the performance and value of the α -hemihydrate gypsum are far superior to those of the β -hemihydrate gypsum.
The hemihydrate gypsum of the present invention is not particularly limited, and may be any commercially available hemihydrate gypsum.
As a preferred embodiment, the hemihydrate gypsum in the invention is α -hemihydrate gypsum, and the α -hemihydrate gypsum is prepared by crushing massive dihydrate gypsum into powder, spraying an anticorrosive aqueous solution into the powder, adding the powder into a reaction kettle, introducing high-pressure steam into the reaction kettle, taking out the powder after 6 hours, aging and grinding the powder by a grinding mill to obtain the α -hemihydrate gypsum, wherein the anticorrosive aqueous solution comprises the following raw materials in parts by weight, namely 1 part of sodium acetate, 1 part of sodium bicarbonate, 10 parts of zinc chloride and 1000 parts of water, and the weight ratio of the anticorrosive aqueous solution to the dihydrate gypsum powder is 1: 3.
Graphite, an allotrope of carbon, is a transition type crystal between atomic, metallic and molecular crystals. Graphite has some special properties such as high temperature resistance, electrical conductivity, lubricity, chemical stability due to its special structure. The graphite can be used for producing refractory materials, conductive materials, wear-resistant materials, lubricants, high-temperature-resistant sealing materials, corrosion-resistant materials, heat-insulating materials, adsorbing materials, friction materials, radiation-proof materials and the like, and the materials are widely applied to the industries of metallurgy, petrochemical industry, mechanical industry, electronic industry, nuclear industry, national defense and the like.
Graphite in the present invention is not particularly limited, and is commercially available in any kind of grades.
Preferably, the graphite is expandable graphite.
Preferably, the expandable graphite is modified expandable graphite, and the preparation method of the modified expandable graphite comprises the following steps: adding the nanoscale montmorillonite, the expandable graphite and the gamma- (methacryloyloxy) propyl trimethoxy silane into water, stirring uniformly, heating to 100 ℃, reacting for 2 hours, filtering, washing and drying to obtain the nano-graphite/gamma- (methacryloyloxy) propyl trimethoxy silane composite material, wherein the mass ratio of the nanoscale montmorillonite to the expandable graphite to the gamma- (methacryloyloxy) propyl trimethoxy silane is 5:1: 0.5.
The sodium α -olefin sulfonate used in the present invention is not particularly limited, and sodium α -olefin sulfonate used in the present invention is commercially available.
The cement admixture is a small amount of chemical components added to cement during construction work. The addition of cement admixture into cement is an effective way to regulate and improve some properties of cement, and the method has the advantages of small dosage, convenient use, low cost and high economic and technical benefits. The cement admixture in the present invention is not particularly limited.
As a preferred embodiment, the cement admixture of the present invention comprises the following components in parts by weight: 2 parts of triethanolamine, 1 part of glycerol, 2 parts of triisopropanolamine and 1 part of sodium fatty acid.
The preparation method of the cement admixture comprises the following steps: adding triethanolamine, glycerol, triisopropanolamine and sodium fatty acid in corresponding parts by weight into water, heating the solution to 50 ℃, and uniformly stirring to obtain the water-soluble organic acid.
Hydroxypropyl methyl cellulose belongs to nonionic cellulose mixed ether, is a semi-synthetic, inactive and viscoelastic polymer, is white or off-white fibrous or granular powder, and is widely applied to the industries of synthetic resin, petrochemical industry, ceramics, papermaking, leather, medicine, food, cosmetics and the like.
The hydroxypropylmethylcellulose in the present invention is not particularly limited, and is commercially available.
The filler is not particularly limited, and the filler used in the present invention is commercially available.
As a preferred embodiment, the filler in the invention is selected from one or a mixture of more of calcined kaolin, talcum powder, mica powder, asbestos powder, nano-silica and aluminum silicate.
The preparation method of the modified aluminum hydroxide comprises the following steps: adding a certain amount of water into a reaction kettle, adding an inorganic flame retardant, aluminum sulfate and a surfactant into the reaction kettle, uniformly stirring, adding a certain amount of ammonia water into the reaction kettle until the pH value of a solution in the reaction kettle is 6.1-7.2, reacting for a certain time, filtering and drying to obtain a target product, wherein the temperature of the solution in the reaction kettle is always maintained at 30-45 ℃ in the preparation process, and the mass ratio of the water, the inorganic flame retardant, the aluminum sulfate and the surfactant is as follows: 10:1:1: 0.1; the inorganic flame retardant comprises one or a mixture of more of diammonium hydrogen phosphate, ammonium polyphosphate, red phosphorus, nano magnesium hydroxide, zinc borate and phosphate, and the surfactant comprises one or a mixture of more of Tween20, Tween21, polyoxyethylene nonyl phenol ether, polyoxyethylene 400 monolaurate, polyoxyethylene 40 stearate, polyoxyethylene lauryl ether, polyoxyethylene cetyl ether and polyoxyethylene fatty alcohol ether.
As a preferred embodiment, the cement-based fireproofing material with quick setting performance further comprises 3 parts of fly ash.
The second aspect of the invention provides a construction method of a cement-based fireproof material with quick setting performance, which at least comprises the following steps: (1) uniformly mixing the materials in the component A, mixing water and the component A according to the mass ratio of (1.1-1.45) to 1, and uniformly stirring to obtain slurry; (2) mixing water and the component B according to the mass ratio of (1.4-1.6) to 1 to obtain a curing agent solution; (3) respectively adding the slurry and the curing agent solution into a double-group spraying machine so as to uniformly mix the curing agent solution and the slurry at a gun mouth; the mass ratio of the slurry to the curing agent solution is 1 (0.02-0.33); (4) and spraying a layer of the cement-based fireproof material on the base material, wherein the thickness of one-time spraying is 40-50 mm.
The present invention will be specifically described below by way of examples. It is to be noted that the following examples are only for further illustration of the present invention and should not be construed as limiting the scope of the present invention. Many non-essential modifications and adaptations of the present invention will occur to those skilled in the art in view of the foregoing description, and are intended to be within the scope of the present invention. In addition, the starting materials used are all commercially available, unless otherwise specified.
Example 1
A cement-based fireproof material with quick setting performance comprises a component A and a component B, wherein the component A comprises the following materials in parts by weight:
80 parts of cement;
10 parts of polystyrene particles;
5 parts of fiber;
8 parts of vermiculite;
50 parts of tricalcium aluminate;
50 parts of semi-hydrated gypsum;
1 part of graphite;
α -1 part of olefin sodium sulfonate;
5 parts of a cement additive;
1 part of hydroxypropyl methyl cellulose;
1 part of a filler;
the component B is modified aluminum hydroxide, and the component B accounts for 6% of the weight of the component A.
The tricalcium aluminate is commercially available and purchased from golden Carlo chemical Co.
The hemihydrate gypsum is also commercially available, also available from golden Carlo chemical Co.
The graphite is expandable graphite.
The α -olefin sodium sulfonate is purchased from Jinan Beiya specialization engineering technology, Inc.
The cement admixture comprises 2 parts of triethanolamine, 1 part of glycerol, 2 parts of triisopropanolamine and 1 part of sodium fatty acid; the preparation method of the cement admixture comprises the following steps: adding triethanolamine, glycerol, triisopropanolamine and sodium fatty acid in corresponding parts by weight into water, heating the solution to 50 ℃, and uniformly stirring to obtain the water-soluble organic acid.
The filler is calcined kaolin.
The construction method of the cement-based fireproof material at least comprises the following steps: (1) uniformly mixing the materials in the component A, mixing water and the component A according to the mass ratio of 1.15:1, and uniformly stirring to obtain slurry; (2) mixing water and the component B according to the mass ratio of 1.4:1 to obtain a curing agent solution; (3) respectively adding the slurry and the curing agent solution into a double-group spraying machine so as to uniformly mix the curing agent solution and the slurry at a gun mouth; the mass ratio of the slurry to the curing agent solution is 1: 0.02; (4) and spraying a layer of the cement-based fireproof material on a base material, wherein the thickness of one-time spraying is 40 mm.
Example 2
A cement-based fireproof material with quick setting performance comprises a component A and a component B, wherein the component A comprises the following materials in parts by weight:
100 parts of cement;
1 part of fiber;
30 parts of vermiculite;
100 parts of tricalcium aluminate;
30 parts of semi-hydrated gypsum;
5 parts of graphite;
α -5 parts of olefin sodium sulfonate;
1 part of cement admixture;
5 parts of hydroxypropyl methyl cellulose;
2 parts of a filler;
the component B is modified aluminum hydroxide, and the component B accounts for 6% of the weight of the component A.
The tricalcium aluminate is commercially available and purchased from golden Carlo chemical Co.
The hemihydrate gypsum is also commercially available, also available from golden Carlo chemical Co.
The graphite is expandable graphite.
The cement admixture comprises 2 parts of triethanolamine, 1 part of glycerol, 2 parts of triisopropanolamine and 1 part of sodium fatty acid; the preparation method of the cement admixture comprises the following steps: adding triethanolamine, glycerol, triisopropanolamine and sodium fatty acid in corresponding parts by weight into water, heating the solution to 50 ℃, and uniformly stirring to obtain the water-soluble organic acid.
The filler is a mixture of calcined kaolin and mica powder, and the weight ratio of the calcined kaolin to the mica powder is 1: 1.
The construction method of the cement-based fireproof material at least comprises the following steps: (1) uniformly mixing the materials in the component A, mixing water and the component A according to the mass ratio of 1.1:1, and uniformly stirring to obtain slurry; (2) mixing water and the component B according to the mass ratio of 1.46:1 to obtain a curing agent solution; (3) respectively adding the slurry and the curing agent solution into a double-group spraying machine so as to uniformly mix the curing agent solution and the slurry at a gun mouth; the mass ratio of the slurry to the curing agent solution is 1: 0.08; (4) and spraying a layer of the cement-based fireproof material on the base material, wherein the thickness of one-time spraying is 45 mm.
Example 3
A cement-based fireproof material with quick setting performance comprises a component A and a component B, wherein the component A comprises the following materials in parts by weight:
60 parts of cement;
15 parts of polystyrene particles;
12 parts of fiber;
60 parts of tricalcium aluminate;
35 parts of semi-hydrated gypsum;
2 parts of graphite;
α -sodium olefin sulfonate 2 parts;
2 parts of a cement additive;
3 parts of hydroxypropyl methyl cellulose;
3 parts of a filler;
the component B is modified aluminum hydroxide, and the component B accounts for 5% of the weight of the component A.
The tricalcium aluminate is commercially available and purchased from golden Carlo chemical Co.
The hemihydrate gypsum is also commercially available, also available from golden Carlo chemical Co.
The α -olefin sodium sulfonate is purchased from Jinan Beiya specialization engineering technology, Inc.
The cement admixture comprises 2 parts of triethanolamine, 1 part of glycerol, 2 parts of triisopropanolamine and 1 part of sodium fatty acid; the preparation method of the cement admixture comprises the following steps: adding triethanolamine, glycerol, triisopropanolamine and sodium fatty acid in corresponding parts by weight into water, heating the solution to 50 ℃, and uniformly stirring to obtain the water-soluble organic acid.
The filler is talcum powder.
The construction method of the cement-based fireproof material at least comprises the following steps: (1) uniformly mixing the materials in the component A, mixing water and the component A according to the mass ratio of 1.2:1, and uniformly stirring to obtain slurry; (2) mixing water and the component B according to the mass ratio of 1.5:1 to obtain a curing agent solution; (3) respectively adding the slurry and the curing agent solution into a double-group spraying machine so as to uniformly mix the curing agent solution and the slurry at a gun mouth; the mass ratio of the slurry to the curing agent solution is 1: 0.1; (4) and spraying a layer of the cement-based fireproof material on a substrate, wherein the thickness of one-time spraying is 44 mm.
Example 4
A cement-based fireproof material with quick setting performance comprises a component A and a component B, wherein the component A comprises the following materials in parts by weight:
30 parts of cement;
2 parts of polystyrene particles;
3 parts of fiber;
5 parts of vermiculite;
50 parts of tricalcium aluminate;
30 parts of semi-hydrated gypsum;
3 parts of graphite;
α -olefin sodium sulfonate 1.5 parts;
2.5 parts of a cement additive;
3.5 parts of hydroxypropyl methyl cellulose;
2.5 parts of a filler;
3 parts of fly ash;
the component B is modified aluminum hydroxide, and the component B accounts for 8% of the weight of the component A.
The tricalcium aluminate is commercially available and purchased from golden Carlo chemical Co.
The hemihydrate gypsum is also commercially available, also available from golden Carlo chemical Co.
The graphite is expandable graphite.
The cement admixture comprises 2 parts of triethanolamine, 1 part of glycerol, 2 parts of triisopropanolamine and 1 part of sodium fatty acid; the preparation method of the cement admixture comprises the following steps: adding triethanolamine, glycerol, triisopropanolamine and sodium fatty acid in corresponding parts by weight into water, heating the solution to 50 ℃, and uniformly stirring to obtain the water-soluble organic acid.
The filler is a mixture of asbestos powder and mica powder, and the weight ratio of the asbestos powder to the mica powder is 1: 1. .
The fly ash is commercially available and purchased from Zhengzhou Jinyuan fly ash Co.
The construction method of the cement-based fireproof material at least comprises the following steps: (1) uniformly mixing the materials in the component A, mixing water and the component A according to the mass ratio of 1.3:1, and uniformly stirring to obtain slurry; (2) mixing water and the component B according to the mass ratio of 1.55:1 to obtain a curing agent solution; (3) respectively adding the slurry and the curing agent solution into a double-group spraying machine so as to uniformly mix the curing agent solution and the slurry at a gun mouth; the mass ratio of the slurry to the curing agent solution is 1: 0.15; (4) and spraying a layer of the cement-based fireproof material on a base material, wherein the thickness of one-time spraying is 48 mm.
Example 5
A cement-based fireproof material with quick setting performance comprises a component A and a component B, wherein the component A comprises the following materials in parts by weight:
90 parts of cement;
30 parts of polystyrene particles;
15 parts of fiber;
22 parts of vermiculite;
70 parts of tricalcium aluminate;
40 parts of semi-hydrated gypsum;
4 parts of graphite;
α -olefin sodium sulfonate 3.5 parts;
3 parts of a cement additive;
2 parts of hydroxypropyl methyl cellulose;
2.8 parts of a filler;
3 parts of fly ash;
the component B is modified aluminum hydroxide, and the component B accounts for 20% of the weight of the component A.
The tricalcium aluminate is commercially available and purchased from golden Carlo chemical Co.
The hemihydrate gypsum is also commercially available, also available from golden Carlo chemical Co.
The graphite is modified expandable graphite, and the preparation method of the modified expandable graphite comprises the following steps: adding the nanoscale montmorillonite, the expandable graphite and the gamma- (methacryloyloxy) propyl trimethoxy silane into water, stirring uniformly, heating to 100 ℃, reacting for 2 hours, filtering, washing and drying to obtain the modified expandable graphite, wherein the mass ratio of the nanoscale montmorillonite to the expandable graphite to the gamma- (methacryloyloxy) propyl trimethoxy silane is 5:1: 0.5. The expandable graphite is purchased from Qingdao Nissangji graphite Co., Ltd, and the model is 9580300.
The cement admixture comprises 2 parts of triethanolamine, 1 part of glycerol, 2 parts of triisopropanolamine and 1 part of sodium fatty acid; the preparation method of the cement admixture comprises the following steps: adding triethanolamine, glycerol, triisopropanolamine and sodium fatty acid in corresponding parts by weight into water, heating the solution to 50 ℃, and uniformly stirring to obtain the water-soluble organic acid.
The filler is a mixture of aluminum silicate and nano silicon dioxide, and the weight ratio of the aluminum silicate to the nano silicon dioxide is 1: 1.
The construction method of the cement-based fireproof material at least comprises the following steps: (1) uniformly mixing the materials in the component A, mixing water and the component A according to the mass ratio of 1.4:1, and uniformly stirring to obtain slurry; (2) mixing water and the component B according to the mass ratio of 1.6:1 to obtain a curing agent solution; (3) respectively adding the slurry and the curing agent solution into a double-group spraying machine so as to uniformly mix the curing agent solution and the slurry at a gun mouth; the mass ratio of the slurry to the curing agent solution is 1: 0.2; (4) and spraying a layer of the cement-based fireproof material on a base material, wherein the thickness of one-time spraying is 46 mm.
Example 6
A cement-based fireproof material with quick setting performance comprises a component A and a component B, wherein the component A comprises the following materials in parts by weight:
70 parts of cement;
22 parts of polystyrene particles;
17 parts of fibers;
15 parts of vermiculite;
90 parts of tricalcium aluminate;
37 parts of semi-hydrated gypsum;
2.5 parts of graphite;
α -4 parts of olefin sodium sulfonate;
4 parts of a cement additive;
4 parts of hydroxypropyl methyl cellulose;
1.8 parts of a filler;
3 parts of fly ash;
the component B is modified aluminum hydroxide, and accounts for 30% of the weight of the component A.
The tricalcium aluminate is commercially available and purchased from golden Carlo chemical Co.
The hemihydrate gypsum is also commercially available, also available from golden Carlo chemical Co.
The graphite is modified expandable graphite, and the preparation method of the modified expandable graphite comprises the following steps: adding the nanoscale montmorillonite, the expandable graphite and the gamma- (methacryloyloxy) propyl trimethoxy silane into water, stirring uniformly, heating to 100 ℃, reacting for 2 hours, filtering, washing and drying to obtain the modified expandable graphite, wherein the mass ratio of the nanoscale montmorillonite to the expandable graphite to the gamma- (methacryloyloxy) propyl trimethoxy silane is 5:1: 0.5. The expandable graphite is purchased from Qingdao Nissangji graphite Co., Ltd, and the model is 9580300.
The cement admixture comprises 2 parts of triethanolamine, 1 part of glycerol, 2 parts of triisopropanolamine and 1 part of sodium fatty acid; the preparation method of the cement admixture comprises the following steps: adding triethanolamine, glycerol, triisopropanolamine and sodium fatty acid in corresponding parts by weight into water, heating the solution to 50 ℃, and uniformly stirring to obtain the water-soluble organic acid.
The filler is calcined kaolin.
The preparation method of the modified aluminum hydroxide comprises the following steps: adding a certain amount of water into a reaction kettle, adding an inorganic flame retardant, aluminum sulfate and a surfactant into the reaction kettle, uniformly stirring, adding a certain amount of ammonia water into the reaction kettle until the pH value of a solution in the reaction kettle is 6.1-7.2, reacting for a certain time, filtering and drying to obtain a target product, wherein the temperature of the solution in the reaction kettle is always maintained at 30-45 ℃ in the preparation process, and the mass ratio of the water, the inorganic flame retardant, the aluminum sulfate and the surfactant is as follows: 10:1:1: 0.1; the inorganic flame retardant comprises one or a mixture of more of diammonium hydrogen phosphate, ammonium polyphosphate, red phosphorus, nano magnesium hydroxide, zinc borate and phosphate, and the surfactant comprises one or a mixture of more of Tween20, Tween21, polyoxyethylene nonyl phenol ether, polyoxyethylene 400 monolaurate, polyoxyethylene 40 stearate, polyoxyethylene lauryl ether, polyoxyethylene cetyl ether and polyoxyethylene fatty alcohol ether.
The construction method of the cement-based fireproof material at least comprises the following steps: (1) uniformly mixing the materials in the component A, mixing water and the component A according to the mass ratio of 1.45:1, and uniformly stirring to obtain slurry; (2) mixing water and the component B according to the mass ratio of 1.48:1 to obtain a curing agent solution; (3) respectively adding the slurry and the curing agent solution into a double-group spraying machine so as to uniformly mix the curing agent solution and the slurry at a gun mouth; the mass ratio of the slurry to the curing agent solution is 1: 0.28; (4) and spraying a layer of the cement-based fireproof material on a base material, wherein the thickness of one-time spraying is 49 mm.
Example 7
A cement-based fireproof material with quick setting performance comprises a component A and a component B, wherein the component A comprises the following materials in parts by weight:
80 parts of cement;
17 parts of polystyrene particles;
10 parts of fiber;
12 parts of vermiculite;
80 parts of tricalcium aluminate;
45 parts of semi-hydrated gypsum;
4 parts of graphite;
α -sodium olefin sulfonate 3 parts;
4 parts of a cement additive;
4 parts of hydroxypropyl methyl cellulose;
2 parts of a filler;
3 parts of fly ash;
the component B is modified aluminum hydroxide, and the component B accounts for 16% of the weight of the component A.
The tricalcium aluminate is commercially available and purchased from golden Carlo chemical Co.
The hemihydrate gypsum is also commercially available, also available from golden Carlo chemical Co.
The graphite is modified expandable graphite, and the preparation method of the modified expandable graphite comprises the following steps: adding the nanoscale montmorillonite, the expandable graphite and the gamma- (methacryloyloxy) propyl trimethoxy silane into water, stirring uniformly, heating to 100 ℃, reacting for 2 hours, filtering, washing and drying to obtain the modified expandable graphite, wherein the mass ratio of the nanoscale montmorillonite to the expandable graphite to the gamma- (methacryloyloxy) propyl trimethoxy silane is 5:1: 0.5. The expandable graphite is purchased from Qingdao Nissangji graphite Co., Ltd, and the model is 9580300.
The cement admixture comprises 2 parts of triethanolamine, 1 part of glycerol, 2 parts of triisopropanolamine and 1 part of sodium fatty acid; the preparation method of the cement admixture comprises the following steps: adding triethanolamine, glycerol, triisopropanolamine and sodium fatty acid in corresponding parts by weight into water, heating the solution to 50 ℃, and uniformly stirring to obtain the water-soluble organic acid.
The filler is a mixture of calcined kaolin and aluminum silicate, and the weight ratio of the calcined kaolin to the aluminum silicate is 1: 1.
The preparation method of the modified aluminum hydroxide comprises the following steps: adding a certain amount of water into a reaction kettle, adding an inorganic flame retardant, aluminum sulfate and a surfactant into the reaction kettle, uniformly stirring, adding a certain amount of ammonia water into the reaction kettle until the pH value of a solution in the reaction kettle is 6.1-7.2, reacting for a certain time, filtering and drying to obtain a target product, wherein the temperature of the solution in the reaction kettle is always maintained at 30-45 ℃ in the preparation process, and the mass ratio of the water, the inorganic flame retardant, the aluminum sulfate and the surfactant is as follows: 10:1:1: 0.1; the inorganic flame retardant comprises one or a mixture of more of diammonium hydrogen phosphate, ammonium polyphosphate, red phosphorus, nano magnesium hydroxide, zinc borate and phosphate, and the surfactant comprises one or a mixture of more of Tween20, Tween21, polyoxyethylene nonyl phenol ether, polyoxyethylene 400 monolaurate, polyoxyethylene 40 stearate, polyoxyethylene lauryl ether, polyoxyethylene cetyl ether and polyoxyethylene fatty alcohol ether.
The construction method of the cement-based fireproof material at least comprises the following steps: (1) uniformly mixing the materials in the component A, mixing water and the component A according to the mass ratio of 1.15:1, and uniformly stirring to obtain slurry; (2) mixing water and the component B according to the mass ratio of 1.4:1 to obtain a curing agent solution; (3) respectively adding the slurry and the curing agent solution into a double-group spraying machine so as to uniformly mix the curing agent solution and the slurry at a gun mouth; the mass ratio of the slurry to the curing agent solution is 1: 0.3; (4) and spraying a layer of the cement-based fireproof material on a base material, wherein the thickness of one-time spraying is 40 mm.
Example 8
A cement-based fireproof material with quick setting performance comprises a component A and a component B, wherein the component A comprises the following materials in parts by weight:
50 parts of cement;
15 parts of polystyrene particles;
8 parts of fiber;
17 parts of vermiculite;
55 parts of tricalcium aluminate;
30 parts of semi-hydrated gypsum;
5 parts of graphite;
α -sodium olefin sulfonate 3 parts;
2 parts of a cement additive;
3 parts of hydroxypropyl methyl cellulose;
3 parts of a filler;
3 parts of fly ash;
the component B is modified aluminum hydroxide, and the component B accounts for 25% of the weight of the component A.
The tricalcium aluminate is commercially available and purchased from golden Carlo chemical Co.
The semi-hydrated gypsum is α -semi-hydrated gypsum, and the α -semi-hydrated gypsum is prepared by crushing large blocks of the dihydrate gypsum into powder, spraying an anticorrosive aqueous solution into the powder, adding the powder into a reaction kettle, introducing high-pressure steam into the reaction kettle, taking out the powder after 6 hours, aging the powder and grinding the powder by a grinding machine to obtain the anticorrosive aqueous solution, wherein the anticorrosive aqueous solution comprises the following raw materials in parts by weight, 1 part of sodium acetate, 1 part of sodium bicarbonate, 10 parts of zinc chloride and 1000 parts of water, and the weight ratio of the anticorrosive aqueous solution to the dihydrate gypsum powder is 1: 3.
The graphite is modified expandable graphite, and the preparation method of the modified expandable graphite comprises the following steps: adding the nanoscale montmorillonite, the expandable graphite and the gamma- (methacryloyloxy) propyl trimethoxy silane into water, stirring uniformly, heating to 100 ℃, reacting for 2 hours, filtering, washing and drying to obtain the modified expandable graphite, wherein the mass ratio of the nanoscale montmorillonite to the expandable graphite to the gamma- (methacryloyloxy) propyl trimethoxy silane is 5:1: 0.5. The expandable graphite is purchased from Qingdao Nissangji graphite Co., Ltd, and the model is 9580300.
The cement admixture comprises 2 parts of triethanolamine, 1 part of glycerol, 2 parts of triisopropanolamine and 1 part of sodium fatty acid; the preparation method of the cement admixture comprises the following steps: adding triethanolamine, glycerol, triisopropanolamine and sodium fatty acid in corresponding parts by weight into water, heating the solution to 50 ℃, and uniformly stirring to obtain the water-soluble organic acid.
The filler is aluminum silicate.
The preparation method of the modified aluminum hydroxide comprises the following steps: adding a certain amount of water into a reaction kettle, adding an inorganic flame retardant, aluminum sulfate and a surfactant into the reaction kettle, uniformly stirring, adding a certain amount of ammonia water into the reaction kettle until the pH value of a solution in the reaction kettle is 6.1-7.2, reacting for a certain time, filtering and drying to obtain a target product, wherein the temperature of the solution in the reaction kettle is always maintained at 30-45 ℃ in the preparation process, and the mass ratio of the water, the inorganic flame retardant, the aluminum sulfate and the surfactant is as follows: 10:1:1: 0.1; the inorganic flame retardant comprises one or a mixture of more of diammonium hydrogen phosphate, ammonium polyphosphate, red phosphorus, nano magnesium hydroxide, zinc borate and phosphate, and the surfactant comprises one or a mixture of more of Tween20, Tween21, polyoxyethylene nonyl phenol ether, polyoxyethylene 400 monolaurate, polyoxyethylene 40 stearate, polyoxyethylene lauryl ether, polyoxyethylene cetyl ether and polyoxyethylene fatty alcohol ether.
The construction method of the cement-based fireproof material at least comprises the following steps: (1) uniformly mixing the materials in the component A, mixing water and the component A according to the mass ratio of 1.15:1, and uniformly stirring to obtain slurry; (2) mixing water and the component B according to the mass ratio of 1.2:1 to obtain a curing agent solution; (3) respectively adding the slurry and the curing agent solution into a double-group spraying machine so as to uniformly mix the curing agent solution and the slurry at a gun mouth; the mass ratio of the slurry to the curing agent solution is 1: 0.33; (4) and spraying a layer of the cement-based fireproof material on a base material, wherein the thickness of one-time spraying is 50 mm.
Example 9
A cement-based fireproof material with quick setting performance comprises a component A and a component B, wherein the component A comprises the following materials in parts by weight:
80 parts of cement;
12 parts of polystyrene particles;
6 parts of fiber;
9 parts of vermiculite;
80 parts of tricalcium aluminate;
45 parts of semi-hydrated gypsum;
4 parts of graphite;
α -sodium olefin sulfonate 3 parts;
4 parts of a cement additive;
4 parts of hydroxypropyl methyl cellulose;
2 parts of a filler;
3 parts of fly ash;
the component B is modified aluminum hydroxide, and the component B accounts for 10% of the weight of the component A.
The tricalcium aluminate is commercially available and purchased from golden Carlo chemical Co.
The semi-hydrated gypsum is α -semi-hydrated gypsum, and the α -semi-hydrated gypsum is prepared by crushing large blocks of the dihydrate gypsum into powder, spraying an anticorrosive aqueous solution into the powder, adding the powder into a reaction kettle, introducing high-pressure steam into the reaction kettle, taking out the powder after 6 hours, aging the powder and grinding the powder by a grinding machine to obtain the anticorrosive aqueous solution, wherein the anticorrosive aqueous solution comprises the following raw materials in parts by weight, 1 part of sodium acetate, 1 part of sodium bicarbonate, 10 parts of zinc chloride and 1000 parts of water, and the weight ratio of the anticorrosive aqueous solution to the dihydrate gypsum powder is 1: 3.
The graphite is modified expandable graphite, and the preparation method of the modified expandable graphite comprises the following steps: adding the nanoscale montmorillonite, the expandable graphite and the gamma- (methacryloyloxy) propyl trimethoxy silane into water, stirring uniformly, heating to 100 ℃, reacting for 2 hours, filtering, washing and drying to obtain the modified expandable graphite, wherein the mass ratio of the nanoscale montmorillonite to the expandable graphite to the gamma- (methacryloyloxy) propyl trimethoxy silane is 5:1: 0.5. The expandable graphite is purchased from Qingdao Nissangji graphite Co., Ltd, and the model is 9580300.
The cement admixture comprises 2 parts of triethanolamine, 1 part of glycerol, 2 parts of triisopropanolamine and 1 part of sodium fatty acid; the preparation method of the cement admixture comprises the following steps: adding triethanolamine, glycerol, triisopropanolamine and sodium fatty acid in corresponding parts by weight into water, heating the solution to 50 ℃, and uniformly stirring to obtain the water-soluble organic acid.
The filler is asbestos powder.
The preparation method of the modified aluminum hydroxide comprises the following steps: adding a certain amount of water into a reaction kettle, adding an inorganic flame retardant, aluminum sulfate and a surfactant into the reaction kettle, uniformly stirring, adding a certain amount of ammonia water into the reaction kettle until the pH value of a solution in the reaction kettle is 6.1-7.2, reacting for a certain time, filtering and drying to obtain a target product, wherein the temperature of the solution in the reaction kettle is always maintained at 30-45 ℃ in the preparation process, and the mass ratio of the water, the inorganic flame retardant, the aluminum sulfate and the surfactant is as follows: 10:1:1: 0.1; the inorganic flame retardant comprises one or a mixture of more of diammonium hydrogen phosphate, ammonium polyphosphate, red phosphorus, nano magnesium hydroxide, zinc borate and phosphate, and the surfactant comprises one or a mixture of more of Tween20, Tween21, polyoxyethylene nonyl phenol ether, polyoxyethylene 400 monolaurate, polyoxyethylene 40 stearate, polyoxyethylene lauryl ether, polyoxyethylene cetyl ether and polyoxyethylene fatty alcohol ether.
The construction method of the cement-based fireproof material at least comprises the following steps: (1) uniformly mixing the materials in the component A, mixing water and the component A according to the mass ratio of 1.15:1, and uniformly stirring to obtain slurry; (2) mixing water and the component B according to the mass ratio of 1.4:1 to obtain a curing agent solution; (3) respectively adding the slurry and the curing agent solution into a double-group spraying machine so as to uniformly mix the curing agent solution and the slurry at a gun mouth; the mass ratio of the slurry to the curing agent solution is 1: 0.02; (4) and spraying a layer of the cement-based fireproof material on a base material, wherein the thickness of one-time spraying is 43 mm.
Example 10
A cement-based fireproof material with quick setting performance comprises a component A and a component B, wherein the component A comprises the following materials in parts by weight:
80 parts of cement;
10 parts of polystyrene particles;
5 parts of fiber;
8 parts of vermiculite;
85 parts of tricalcium aluminate;
35 parts of semi-hydrated gypsum;
3 parts of graphite;
α -4 parts of olefin sodium sulfonate;
2 parts of a cement additive;
5 parts of hydroxypropyl methyl cellulose;
2 parts of a filler;
3 parts of fly ash;
the component B is modified aluminum hydroxide, and the component B accounts for 13% of the weight of the component A.
The tricalcium aluminate is commercially available and purchased from golden Carlo chemical Co.
The semi-hydrated gypsum is α -semi-hydrated gypsum, and the α -semi-hydrated gypsum is prepared by crushing large blocks of the dihydrate gypsum into powder, spraying an anticorrosive aqueous solution into the powder, adding the powder into a reaction kettle, introducing high-pressure steam into the reaction kettle, taking out the powder after 6 hours, aging the powder and grinding the powder by a grinding machine to obtain the anticorrosive aqueous solution, wherein the anticorrosive aqueous solution comprises the following raw materials in parts by weight, 1 part of sodium acetate, 1 part of sodium bicarbonate, 10 parts of zinc chloride and 1000 parts of water, and the weight ratio of the anticorrosive aqueous solution to the dihydrate gypsum powder is 1: 3.
The graphite is modified expandable graphite, and the preparation method of the modified expandable graphite comprises the following steps: adding the nanoscale montmorillonite, the expandable graphite and the gamma- (methacryloyloxy) propyl trimethoxy silane into water, stirring uniformly, heating to 100 ℃, reacting for 2 hours, filtering, washing and drying to obtain the modified expandable graphite, wherein the mass ratio of the nanoscale montmorillonite to the expandable graphite to the gamma- (methacryloyloxy) propyl trimethoxy silane is 5:1: 0.5. The expandable graphite is purchased from Qingdao Nissangji graphite Co., Ltd, and the model is 9580300.
The cement admixture comprises 2 parts of triethanolamine, 1 part of glycerol, 2 parts of triisopropanolamine and 1 part of sodium fatty acid; the preparation method of the cement admixture comprises the following steps: adding triethanolamine, glycerol, triisopropanolamine and sodium fatty acid in corresponding parts by weight into water, heating the solution to 50 ℃, and uniformly stirring to obtain the water-soluble organic acid.
The filler is a 1:1 mixture of nano silicon dioxide and aluminum silicate.
The preparation method of the modified aluminum hydroxide comprises the following steps: adding a certain amount of water into a reaction kettle, adding an inorganic flame retardant, aluminum sulfate and a surfactant into the reaction kettle, uniformly stirring, adding a certain amount of ammonia water into the reaction kettle until the pH value of a solution in the reaction kettle is 6.1-7.2, reacting for a certain time, filtering and drying to obtain a target product, wherein the temperature of the solution in the reaction kettle is always maintained at 30-45 ℃ in the preparation process, and the mass ratio of the water, the inorganic flame retardant, the aluminum sulfate and the surfactant is as follows: 10:1:1: 0.1; the inorganic flame retardant comprises one or a mixture of more of diammonium hydrogen phosphate, ammonium polyphosphate, red phosphorus, nano magnesium hydroxide, zinc borate and phosphate, and the surfactant comprises one or a mixture of more of Tween20, Tween21, polyoxyethylene nonyl phenol ether, polyoxyethylene 400 monolaurate, polyoxyethylene 40 stearate, polyoxyethylene lauryl ether, polyoxyethylene cetyl ether and polyoxyethylene fatty alcohol ether.
The construction method of the cement-based fireproof material at least comprises the following steps: (1) uniformly mixing the materials in the component A, mixing water and the component A according to the mass ratio of 1.1:1, and uniformly stirring to obtain slurry; (2) mixing water and the component B according to the mass ratio of 1.4:1 to obtain a curing agent solution; (3) respectively adding the slurry and the curing agent solution into a double-group spraying machine so as to uniformly mix the curing agent solution and the slurry at a gun mouth; the mass ratio of the slurry to the curing agent solution is 1: 0.33; (4) and spraying a layer of the cement-based fireproof material on a base material, wherein the thickness of one-time spraying is 50 mm.
Evaluation of Performance
With reference to the national standard GB 14907-2018 Steel structure fireproof coating, samples were prepared according to the formulation and construction method of example 10, and the properties of the prepared samples are shown in Table 1.
TABLE 1 evaluation results of Properties
The foregoing embodiments are merely illustrative of the principles of the present invention and its efficacy, and are not to be construed as limiting the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The cement-based fireproof material with the quick setting property is characterized by being a two-component system and comprising a component A and a component B, wherein the component A comprises, by weight, 30-100 parts of cement, 0-30 parts of polystyrene particles, 1-15 parts of fibers, 0-30 parts of vermiculite, 50-100 parts of tricalcium aluminate, 30-50 parts of semi-hydrated gypsum, 1-5 parts of graphite, 1-5 parts of α -olefin sodium sulfonate, 1-5 parts of a cement admixture, 1-5 parts of hydroxypropyl methyl cellulose and 1-3 parts of a filler, the component B is modified aluminum hydroxide, and the component B accounts for 5-30% of the weight of the component A.
2. The cement-based fireproof material with the rapid setting property of claim 1 is a two-component system, and comprises, by weight, 60-90 parts of cement, 10-22 parts of polystyrene particles, 5-12 parts of fibers, 8-22 parts of vermiculite, 60-80 parts of tricalcium aluminate, 40-50 parts of semi-hydrated gypsum, 2-5 parts of graphite, 2-4 parts of α -olefin sodium sulfonate, 2-4 parts of a cement admixture, 3-5 parts of hydroxypropyl methyl cellulose and 2-3 parts of a filler, wherein the component B is modified aluminum hydroxide and accounts for 8-20% of the weight of the component A.
3. The cement-based fireproof material with the quick setting property of claim 1 is a two-component system, and comprises a component A and a component B, wherein the component A comprises 80 parts by weight of cement, 17 parts by weight of polystyrene particles, 10 parts by weight of fibers, 12 parts by weight of vermiculite, 80 parts by weight of tricalcium aluminate, 45 parts by weight of semi-hydrated gypsum, 4 parts by weight of graphite, 3 parts by weight of α -olefin sodium sulfonate, 4 parts by weight of a cement admixture, 4 parts by weight of hydroxypropyl methyl cellulose and 2 parts by weight of a filler, the quick setting agent further comprises 3 parts by weight of fly ash, the component B is modified aluminum hydroxide, and the component B accounts for 16% of the weight of the component A.
4. The cement-based fireproofing material with quick setting properties according to claim 1, wherein: the graphite is modified expandable graphite, and the preparation method of the modified expandable graphite comprises the following steps: adding the nanoscale montmorillonite, the expandable graphite and the gamma- (methacryloyloxy) propyl trimethoxy silane into water, stirring uniformly, heating to 100 ℃, reacting for 2 hours, filtering, washing and drying to obtain the modified expandable graphite, wherein the mass ratio of the nanoscale montmorillonite to the expandable graphite to the gamma- (methacryloyloxy) propyl trimethoxy silane is 5:1: 0.5.
5. The cement-based fireproof material with quick setting property of claim 4, wherein the hemihydrate gypsum is α -hemihydrate gypsum, and the preparation method of α -hemihydrate gypsum is that large blocks of dihydrate gypsum are crushed into powder, anticorrosion aqueous solution is sprayed into the powder and then added into a reaction kettle, high-pressure steam is introduced into the reaction kettle, the powder is taken out after 6 hours, aged and ground by a grinding mill, and the anticorrosion aqueous solution is obtained, wherein the anticorrosion aqueous solution comprises the following raw materials, by weight, 1 part of sodium acetate, 1 part of sodium bicarbonate, 10 parts of zinc chloride and 1000 parts of water, and the weight ratio of the anticorrosion aqueous solution to the dihydrate gypsum powder is 1: 3.
6. The cement-based fireproofing material with quick setting properties according to claim 1, wherein: the filler comprises one or a mixture of more of calcined kaolin, talcum powder, mica powder, asbestos powder, nano silicon dioxide and aluminum silicate.
7. The cement-based fireproofing material with quick setting properties according to claim 1, wherein: the cement admixture comprises the following components in parts by weight: 2 parts of triethanolamine, 1 part of glycerol, 2 parts of triisopropanolamine and 1 part of sodium fatty acid.
8. The cement-based fireproofing material with quick setting properties according to claim 7, wherein: the preparation method of the cement admixture comprises the following steps: adding triethanolamine, glycerol, triisopropanolamine and sodium fatty acid in corresponding parts by weight into water, heating the solution to 50 ℃, and uniformly stirring to obtain the water-soluble organic acid.
9. The cement-based fireproofing material with quick setting properties according to claim 1, wherein: the preparation method of the modified aluminum hydroxide comprises the following steps: adding a certain amount of water into a reaction kettle, adding an inorganic flame retardant, aluminum sulfate and a surfactant into the reaction kettle, uniformly stirring, adding a certain amount of ammonia water into the reaction kettle until the pH value of a solution in the reaction kettle is 6.1-7.2, reacting for a certain time, filtering and drying to obtain a target product, wherein the temperature of the solution in the reaction kettle is always maintained at 30-45 ℃ in the preparation process, and the mass ratio of the water, the inorganic flame retardant, the aluminum sulfate and the surfactant is as follows: 10:1:1: 0.1; the inorganic flame retardant comprises one or a mixture of more of diammonium hydrogen phosphate, ammonium polyphosphate, red phosphorus, nano magnesium hydroxide, zinc borate and phosphate, and the surfactant comprises one or a mixture of more of Tween20, Tween21, polyoxyethylene nonyl phenol ether, polyoxyethylene 400 monolaurate, polyoxyethylene 40 stearate, polyoxyethylene lauryl ether, polyoxyethylene cetyl ether and polyoxyethylene fatty alcohol ether.
10. The method of constructing a cement-based fireproofing material with quick setting properties according to any one of claims 1 to 9, characterized in that it comprises at least the following steps: (1) uniformly mixing the materials in the component A, mixing water and the component A according to the mass ratio of (1.1-1.45) to 1, and uniformly stirring to obtain slurry; (2) mixing water and the component B according to the mass ratio of (1.4-1.6) to 1 to obtain a curing agent solution; (3) respectively adding the slurry and the curing agent solution into a double-group spraying machine so as to uniformly mix the curing agent solution and the slurry at a gun mouth; the mass ratio of the slurry to the curing agent solution is 1 (0.02-0.33); (4) and spraying a layer of the cement-based fireproof material on the base material, wherein the thickness of one-time spraying is 40-50 mm.
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