CN112876196A - Fireproof plate for cable trench and preparation method thereof - Google Patents

Fireproof plate for cable trench and preparation method thereof Download PDF

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Publication number
CN112876196A
CN112876196A CN202110047876.1A CN202110047876A CN112876196A CN 112876196 A CN112876196 A CN 112876196A CN 202110047876 A CN202110047876 A CN 202110047876A CN 112876196 A CN112876196 A CN 112876196A
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China
Prior art keywords
gel material
fireproof plate
gel
water
framework
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Pending
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CN202110047876.1A
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Chinese (zh)
Inventor
林祖荣
姚建立
朱晓晖
王军慧
姚建生
连亦芳
裘佳锋
汤叶锋
汪磊
黄荣正
周少聪
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Innovation And Entrepreneurship Center Of State Grid Zhejiang Electric Power Co ltd
Shaoxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
Innovation And Entrepreneurship Center Of State Grid Zhejiang Electric Power Co ltd
Shaoxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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Priority to CN202110047876.1A priority Critical patent/CN112876196A/en
Publication of CN112876196A publication Critical patent/CN112876196A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
    • C04B28/26—Silicates of the alkali metals
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/38—Fibrous materials; Whiskers
    • C04B14/46—Rock wool ; Ceramic or silicate fibres
    • C04B14/4643—Silicates other than zircon
    • C04B14/465—Ca-silicate, e.g. wollastonite
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/08—Flue dust, i.e. fly ash
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/08—Flue dust, i.e. fly ash
    • C04B18/082—Cenospheres
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/14—Waste materials; Refuse from metallurgical processes
    • C04B18/141—Slags
    • 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
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Abstract

The invention discloses a fireproof plate for a cable duct and a preparation method thereof, wherein the fireproof plate comprises a gel material and a framework material, wherein the mol ratio of CaO/SiO2 of the gel material is 0.8-1.2; the framework material is an inorganic material with a hollow structure, and the content of the framework material is 40-60 wt% based on the total mass of the gel material and the framework material. Uniformly mixing all the raw materials, adding water to obtain slurry, and filling the slurry into a mold; and putting the mould into a still kettle to be steamed and pressed to the high-temperature-resistant fireproof plate. According to the invention, the calcium-silicon ratio in the gel material is controlled, so that the gel material can be ensured to fully generate hydration reaction to generate fibrous xonotlite, and the toughness of the fireproof plate is improved; the breaking strength of the material is further improved through the fibers; the heat conductivity of the material can be greatly reduced by controlling the framework material to be a material with a hollow structure.

Description

Fireproof plate for cable trench and preparation method thereof
Technical Field
The invention belongs to the technical field of electric power engineering, and particularly relates to a fireproof partition plate for a cable trench.
Background
Control cables and power cables are stored in cable trenches of the transformer substation and the converter station. The control cable and the power cable need to be separated by a fireproof plate. Cable pit fire prevention is separated and is required to possess two basic functions: the first is capable of preventing fire and preventing fire from spreading; the second has certain mechanical strength and toughness, so that the maintenance and construction are convenient.
At present, the cable ignition events frequently occur, accord with the combustion characteristics of electric fire, and can be heated to 1100 ℃ in a short time. The fireproof plate is mostly made of glass fiber reinforced plastics, calcium silicate plates and the like, and the glass fiber reinforced plastics have excellent toughness and mechanical strength, but the combustion performance is classified as B1. The cable can be burnt through in case of fire, and the power cable cannot be protected. The performance of the calcium silicate board is classified as A1, but the calcium silicate board is brittle, the maximum service temperature is only 900 ℃, and the calcium silicate board can crack under long-term service, so that the heat insulation effect of fireproof separation is influenced.
Disclosure of Invention
In order to overcome the defects that the fireproof partition plate of the cable trench in the prior art is not high-temperature resistant and poor in toughness, the invention aims to provide the fireproof plate for the cable trench and the preparation method thereof, so that the fireproof partition plate of the cable trench has the advantages of high temperature resistance and high toughness.
In order to solve the technical problems, the invention adopts the following technical scheme: the fireproof plate for the cable trench comprises raw materials of a gel material and a framework material, wherein the mol ratio of CaO/SiO2 of the gel material is 0.8-1.2; the framework material is an inorganic material with a hollow structure, and the content of the gel material is 40-60 wt% and the content of the framework material is 40-60 wt% based on the total mass of the gel material and the framework material.
Preferably, the gel material comprises a mixture of slag, fly ash and water glass.
Preferably, the content of the slag is 10-20 wt%, the content of the fly ash is 15-20 wt%, and the content of the water glass is 15-20 wt%, based on the total mass of the gel material and the framework material.
Preferably, the water glass is at least one of potassium or sodium water glass.
Preferably, the framework material is at least one of expanded perlite, alumina and floating beads.
Preferably, the floating beads are closed-cell floating beads, and the particle size is 50-70 meshes.
The preparation method of the fireproof plate for the cable trench comprises the steps of uniformly mixing all the raw materials, adding water to obtain slurry, and filling the slurry into a mold; and putting the mould into a still kettle to be steamed and pressed to the high-temperature-resistant fireproof plate.
Preferably, the method also comprises the step of crushing the cementing material into powder before all the raw materials are uniformly mixed, and the specific surface area of the powder is 500-600Kg/cm 2.
Preferably, the water-to-gel ratio of the gel material to water is 0.35-0.45.
Preferably, the steam-pressing temperature is 150-250 ℃, the pressure is 0.8-1.3 MPa, and the pressure maintaining time is 16-24 h.
By adopting the technical scheme, the invention has the following beneficial effects:
1. the high-temperature-resistant fireproof plate comprises a gel material and a framework material, wherein the mol ratio of CaO/SiO2 in the gel material is 0.8-1.2, and the framework material is a material with a hollow structure. By controlling the calcium-silicon ratio in the gel material, the gel material can be ensured to fully generate hydration reaction to generate fibrous xonotlite, so that the toughness of the fireproof plate is improved; the breaking strength of the material is further improved by the fiber reinforced material; the heat conductivity of the material can be greatly reduced by controlling the framework material to be a material with a hollow structure.
2. According to the high-temperature-resistant fireproof plate provided by the invention, the gel material comprises slag, fly ash and water glass, the fly ash and slag mixture in the gel material has a synergistic effect, and xonotlite produced under the excitation of the water glass improves the early strength, promotes the solidification of aggregate and improves the toughness of the fireproof plate. The fiber reinforced material can have better crack resistance under high temperature condition. On the other hand, the selected fly ash is the precipitated beads after the separation of the floating beads in the factory, the gel material consisting of the precipitated beads and the slag has low cost and does not pollute the environment, and the production cost is further reduced while the resource utilization of the waste in the factory is realized.
3. According to the high-temperature-resistant fireproof plate, the floating beads are controlled as the framework material, and the framework material and the gel material can react at high temperature to generate the hard shell of the aluminum silicate layer, so that shrinkage is avoided, cracking of the hard shell is avoided, heat conduction can be inhibited, and the heat conductivity of the fireproof plate is reduced. The material can not crack after being cooled under the action of the fiber, and can be recycled.
4. According to the preparation method of the high-temperature-resistant fireproof plate, the water-to-glue ratio of the gel material to water is controlled to be 0.35-0.45, so that the problem of layering of slurry can be avoided during preparation of the fireproof plate, and when the water-to-glue ratio is too high or too low, the problems of layering, uneven slurry, hard blocks and the like of a product are easy to occur, so that the use requirement cannot be met.
5. The application of the high-temperature-resistant fireproof plate in the fireproof separation of the converter station and the transformer substation can avoid the problem of thermal diffusion of the plugging material, and the material can be widely applied to the field of petrochemical engineering fireproof.
The following detailed description will explain the present invention and its advantages.
Detailed Description
The invention provides a fireproof plate for a cable trench, which comprises the following raw materials of a gel material and a framework material, wherein the mol ratio of CaO/SiO2 of the gel material is 0.8-1.2, such as 0.8, 1 and 1.2; the framework material is an inorganic material with a hollow structure, and the content of the gel material is 40-60 wt% and the content of the framework material is 40-60 wt% based on the total mass of the gel material and the framework material. For example 40%, 50%, 60% by weight.
Wherein the gel material comprises a mixture of slag, fly ash and water glass. Based on the total mass of the gel material and the framework material, the content of the slag is 10-20 wt%, the content of the fly ash is 15-20 wt%, and the content of the water glass is 15-20 wt%. The water glass is at least one of potassium or sodium water glass. The framework material is at least one of expanded perlite, alumina and floating beads. The fly ash is a sinking bead after the sorting of the floating beads in the factory.
The framework material further comprises reinforced fibers, and the reinforced fibers are at least one of cellulose fibers, polyester fibers and basalt fibers.
The invention also provides a preparation method of the fireproof plate for the cable trench, which comprises the steps of uniformly mixing all the raw materials, adding water to obtain slurry, and filling the slurry into a mold; and putting the mould into a still kettle to be steamed and pressed to the high-temperature-resistant fireproof plate.
Before all the raw materials are uniformly mixed, the method also comprises the step of crushing the cementing material into powder, wherein the specific surface area of the powder is 500-600Kg/cm2. For example 500Kg/cm2、550Kg/cm2、600Kg/cm2。
The gel material to water ratio is 0.35-0.45, such as 0.35, 0.4, 0.45. The temperature of the autoclaving is 150 ℃ to 250 ℃, for example 150 ℃, 200 ℃ and 250 ℃. The pressure is 0.8-1.3 MPa, and the pressure maintaining time is 16-24h, such as 0.8MPa, 1MPa, 1.3MPa, 16h, 20h and 24 h.
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The examples do not show the specific experimental steps or conditions, and can be performed according to the conventional experimental steps described in the literature in the field. The reagents or instruments used are not indicated by manufacturers, and are all conventional reagent products which can be obtained commercially.
Example 1
The embodiment provides a high-temperature-resistant fireproof plate which comprises 40% of floating beads, 20% of slag, 15% of sinking beads and 25% of potassium water glass in terms of the total mass of a gel material and a framework material.
The preparation method of the high-temperature-resistant fireproof plate comprises the following steps,
sieving and sorting the fly ash by a 50-70 mesh sieve to obtain floating beads and sinking beads with required particle sizes. Crushing the settled beads and the slag sand to a specific surface area of 500Kg/cm2Then the powder is evenly mixed with floating beads for standby. And dissolving the required water glass in water to prepare a water ratio glass solution, wherein the water-gel ratio of the gel material to the water is 0.35. And (3) putting the cementing material into the prepared solution, uniformly stirring to obtain slurry, then filling the slurry into a mold, curing for 16 hours at 180 ℃ under 0.6MPa, and shaping to obtain the high-temperature-resistant fireproof plate.
Example 2
The embodiment provides a high-temperature-resistant fireproof plate which comprises 35% of floating beads, 5% of basalt fibers, 20% of slag, 15% of sinking beads and 25% of potassium water glass, wherein the floating beads, the basalt fibers, the slag and the sinking beads are counted by the total mass of a gel material and a framework material.
The preparation method of the high-temperature-resistant fireproof plate comprises the following steps,
sieving and sorting the fly ash by a 50-70 mesh sieve to obtain floating beads and sinking beads with required particle sizes. Crushing the settled beads and the slag sand to a specific surface area of 500Kg/cm2Then the powder is evenly mixed with floating beads for standby. And dissolving the required water glass in water to prepare a water glass solution, wherein the water-gel ratio of the gel material to the water is 0.35. And (3) putting the cementing material into the prepared solution, uniformly stirring to obtain slurry, then filling the slurry into a mold, curing for 16 hours at 180 ℃ under 0.6MPa, and shaping to obtain the high-temperature-resistant fireproof plate.
Example 3
The embodiment provides a high-temperature-resistant fireproof plate which comprises 35% of floating beads, 5% of cellulose fibers, 20% of slag, 15% of sinking beads and 25% of potassium water glass by mass of a gel material and a framework material.
The preparation method of the high-temperature-resistant fireproof plate comprises the following steps,
sieving and sorting the fly ash by a 50-70 mesh sieve to obtain floating beads and sinking beads with required particle sizes. Crushing the settled beads and the slag sand to a specific surface area of 500Kg/cm2Then the powder is evenly mixed with floating beads for standby. And dissolving the required water glass in water to prepare a water glass solution, wherein the water-gel ratio of the gel material to the water is 0.35. And (3) putting the cementing material into the prepared solution, uniformly stirring to obtain slurry, then filling the slurry into a mold, curing for 16 hours at 180 ℃ under 0.6MPa, and shaping to obtain the high-temperature-resistant fireproof plate.
Example 4
The embodiment provides a high-temperature-resistant fireproof plate which comprises 35% of floating beads, 5% of cellulose fibers, 10% of slag, 25% of sinking beads and 25% of potassium water glass by mass of a gel material and a framework material.
The preparation method of the high-temperature-resistant fireproof plate comprises the following steps,
sieving and sorting the fly ash by a 50-70 mesh sieve to obtain floating beads and sinking beads with required particle sizes. Crushing the settled beads and the slag sand to a specific surface area of 500Kg/cm2Then the powder is evenly mixed with floating beads for standby. And dissolving the required water glass in water to prepare a water glass solution, wherein the water-gel ratio of the gel material to the water is 0.35. The cementing material is put into the prepared solution and stirredAnd uniformly mixing to obtain slurry, then filling the slurry into a mold, curing for 16 hours at 180 ℃ and 0.6MPa, and shaping to obtain the high-temperature-resistant fireproof plate.
Example 5
The embodiment provides a high-temperature-resistant fireproof plate which comprises 35% of floating beads, 5% of basalt fibers, 20% of slag, 15% of sinking beads and 25% of potassium water glass, wherein the floating beads, the basalt fibers, the slag and the sinking beads are counted by the total mass of a gel material and a framework material.
The preparation method of the high-temperature-resistant fireproof plate comprises the following steps,
sieving and sorting the fly ash by a 50-70 mesh sieve to obtain floating beads and sinking beads with required particle sizes. Crushing the settled beads and the slag sand to the specific surface area of 350Kg/cm2Then the powder is evenly mixed with floating beads for standby. And dissolving the required water glass in water to prepare a water glass solution, wherein the water-gel ratio of the gel material to the water is 0.35. And (3) putting the cementing material into the prepared solution, uniformly stirring to obtain slurry, then filling the slurry into a mold, curing for 16 hours at 180 ℃ under 0.6MPa, and shaping to obtain the high-temperature-resistant fireproof plate.
Comparative example
The embodiment provides a high-temperature-resistant fireproof plate which comprises 40% of floating beads, 30% of slag and 30% of sinking beads by mass of a gel material and a framework material.
The preparation method of the high-temperature-resistant fireproof plate comprises the following steps,
sieving and sorting the fly ash by a 50-70 mesh sieve to obtain floating beads and sinking beads with required particle sizes. Crushing the settled beads and the slag sand to the specific surface area of 350Kg/cm2Then the powder is evenly mixed with floating beads for standby. And dissolving the required water glass in water to prepare a water ratio glass solution, wherein the water-gel ratio of the gel material to the water is 0.35. And (3) putting the cementing material into the prepared solution, uniformly stirring to obtain slurry, then filling the slurry into a mold, curing for 16 hours at 180 ℃ under 0.6MPa, and shaping to obtain the high-temperature-resistant fireproof plate. The embodiment provides a high-temperature-resistant fireproof plate which comprises 40% of floating beads, 40% of slag and 20% of sinking beads by mass of a gel material and a framework material.
The preparation method of the high-temperature-resistant fireproof plate comprises the following steps,
sieving and sorting the fly ash by a 50-70 mesh sieve to obtain floating beads and sinking beads with required particle sizes. Crushing the settled beads and the slag sand to a specific surface area of 500Kg/cm2Then the powder is evenly mixed with floating beads for standby. And (3) putting the gel material into the prepared solution, uniformly stirring to obtain slurry, and then filling the slurry into a mold, wherein the water-gel ratio of the gel material to water is 0.35. Curing for 16h at 180 ℃ and 0.6MPa, and shaping to obtain the high-temperature-resistant fireproof plate.
It will be understood by those skilled in the art that the gel material and the skeleton material in the above embodiments may be replaced or combined as required, and the amount may be adjusted.
Test examples
The test example provides the high temperature resistant fire-proof boards prepared in examples 1-5 and comparative examples 1-2 and the Density of 500Kg/cm for Shandong Fangzhu company2The performance test of the fire-proof plate of (1) is, specifically, as follows,
the method for testing the mechanical property of the high-temperature-resistant fireproof plate comprises the following steps: the method for testing the flexural strength of the fireproof plate after being placed for 3 days and 28 days refers to the national standard GB/T50081-2002;
the method for testing the fire resistance of the high-temperature fire-proof plate comprises the following steps: selecting a test method and a temperature rise curve of the fireproof plate according to national standards GB/T9978.1-2008 and GB/T26784-2011, evaluating the heat insulation performance and the integrity of the fireproof plate according to GB/T9978.8-2008, and representing the fireproof performance of the fireproof plate by the average temperature of the material back plate after the fireproof limit is 3h, wherein the lower the temperature is, the better the fireproof performance of the material is; and observing whether the fireproof plate has cracks or not.
TABLE 1 Performance test results for high temperature fire resistant panels
Figure BDA0002898055710000081
The hydration product is slurry obtained by uniformly mixing all the raw materials and adding water. As can be seen from the scanning electron microscope image of the hydration product in the embodiment 1, the hydration product in the embodiment 1 has the generation of micro crystals of ettringite and tobermorite crystals, and is a main source of the early strength of the fireproof plate; from the SEM image of the hydrated product in example 2, it can be seen that the hydrated product in example 2 has ettringite and tobermorite crystals, and the ettringite crystals are coarser and denser than those in example 1.
The geopolymer prepared by the fly ash generates more gel, has stronger interface binding force, and cannot generate calcium hydroxide enrichment and preferred orientation transition areas like portland cement.
1. The high-temperature-resistant fireproof plate comprises a gel material and a framework material, wherein the mol ratio of CaO/SiO2 in the gel material is 0.8-1.2, and the framework material is a material with a hollow structure. By controlling the calcium-silicon ratio in the gel material, the gel material can be ensured to fully generate hydration reaction to generate fibrous xonotlite, so that the toughness of the fireproof plate is improved; the breaking strength of the material is further improved by the fiber reinforced material; the heat conductivity of the material can be greatly reduced by controlling the framework material to be a material with a hollow structure.
2. According to the high-temperature-resistant fireproof plate provided by the invention, the gel material comprises slag, fly ash and water glass, the fly ash and slag mixture in the gel material has a synergistic effect, and xonotlite produced under the excitation of the water glass improves the early strength, promotes the solidification of aggregate and improves the toughness of the fireproof plate. The fiber reinforced material can have better crack resistance under high temperature condition. On the other hand, the selected fly ash is the precipitated beads after the separation of the floating beads in the factory, the gel material consisting of the precipitated beads and the slag has low cost and does not pollute the environment, and the production cost is further reduced while the resource utilization of the waste in the factory is realized.
3. According to the high-temperature-resistant fireproof plate, the floating beads are controlled as the framework material, and the framework material and the gel material can react at high temperature to generate the hard shell of the aluminum silicate layer, so that shrinkage is avoided, cracking of the hard shell is avoided, heat conduction can be inhibited, and the heat conductivity of the fireproof plate is reduced. The material can not crack after being cooled under the action of the fiber, and can be recycled.
4. According to the preparation method of the high-temperature-resistant fireproof plate, the water-to-glue ratio of the gel material to water is controlled to be 0.35-0.45, so that the problem of layering of slurry can be avoided during preparation of the fireproof plate, and when the water-to-glue ratio is too high or too low, the problems of layering, uneven slurry, hard blocks and the like of a product are easy to occur, so that the use requirement cannot be met.
5. The application of the high-temperature-resistant fireproof plate in the fireproof separation of the converter station and the transformer substation can avoid the problem of thermal diffusion of the plugging material, and the material can be widely applied to the field of petrochemical engineering fireproof.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that the invention is not limited thereto, and may be embodied in other forms without departing from the spirit or essential characteristics thereof. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims (10)

1. The utility model provides a PLASTIC LAMINATED for cable pit which characterized in that: the raw materials of the composite material comprise a gel material and a framework material, wherein the gel material is CaO/SiO2The molar ratio is 0.8-1.2; the framework material is an inorganic material with a hollow structure, and the content of the gel material is 40-60 wt% and the content of the framework material is 40-60 wt% based on the total mass of the gel material and the framework material.
2. The fire-proof plate for cable ducts according to claim 1, wherein: the gel material comprises a mixture of slag, fly ash and water glass.
3. The fire-proof plate for cable ducts according to claim 2, wherein: based on the total mass of the gel material and the framework material, the content of the slag is 10-20 wt%, the content of the fly ash is 15-20 wt%, and the content of the water glass is 15-20 wt%.
4. The fire-proof plate for cable ducts according to claim 2, wherein: the water glass is at least one of potassium or sodium water glass.
5. The fire-proof plate for cable ducts according to claim 1, wherein: the framework material is at least one of expanded perlite, alumina and floating beads.
6. The fire-proof plate for cable ducts according to claim 5, wherein: the floating beads are closed-cell floating beads, and the particle size is 50-70 meshes.
7. A method for producing a fire-retardant panel for a cable trench according to any one of claims 1 to 6, comprising: uniformly mixing all the raw materials, adding water to obtain slurry, and filling the slurry into a mold; and putting the mould into a still kettle to be steamed and pressed to the high-temperature-resistant fireproof plate.
8. The method of claim 7, wherein: before all the raw materials are uniformly mixed, the method also comprises the step of crushing the cementing material into powder, wherein the specific surface area of the powder is 500-600Kg/cm2。
9. The method of claim 8, wherein: the water-to-gel ratio of the gel material to water is 0.35-0.45.
10. The method of manufacturing according to claim 7, 8 or 9, characterized in that: the steam-pressing temperature is 150-250 ℃, the pressure is 0.8-1.3 MPa, and the pressure maintaining time is 16-24 h.
CN202110047876.1A 2021-01-14 2021-01-14 Fireproof plate for cable trench and preparation method thereof Pending CN112876196A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104310865A (en) * 2014-09-16 2015-01-28 中国矿业大学(北京) Glazed hollow bead-fly ash fireproof heat insulation material and its preparation method
CN106187052A (en) * 2016-07-27 2016-12-07 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 A kind of tobermorite type adiabator utilizing calcium silicate slag to prepare and preparation method
CN106396596A (en) * 2016-08-30 2017-02-15 江苏爱富希新型建材股份有限公司 Inorganic fireproof sheets and production method therefor
CN111499315A (en) * 2020-04-20 2020-08-07 全球能源互联网研究院有限公司 High-temperature-resistant fireproof material and preparation method and application thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104310865A (en) * 2014-09-16 2015-01-28 中国矿业大学(北京) Glazed hollow bead-fly ash fireproof heat insulation material and its preparation method
CN106187052A (en) * 2016-07-27 2016-12-07 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 A kind of tobermorite type adiabator utilizing calcium silicate slag to prepare and preparation method
CN106396596A (en) * 2016-08-30 2017-02-15 江苏爱富希新型建材股份有限公司 Inorganic fireproof sheets and production method therefor
CN111499315A (en) * 2020-04-20 2020-08-07 全球能源互联网研究院有限公司 High-temperature-resistant fireproof material and preparation method and application thereof

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