CN109503138A - Fire resisting foamed ceramic and preparation method thereof - Google Patents
Fire resisting foamed ceramic and preparation method thereof Download PDFInfo
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- CN109503138A CN109503138A CN201811538749.6A CN201811538749A CN109503138A CN 109503138 A CN109503138 A CN 109503138A CN 201811538749 A CN201811538749 A CN 201811538749A CN 109503138 A CN109503138 A CN 109503138A
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- C04B2235/447—Phosphates or phosphites, e.g. orthophosphate, hypophosphite
Abstract
The invention discloses a kind of fire resisting foamed ceramics, the fire resisting foamed ceramic includes foamed ceramic matrix, and it is set to the refractory coating of the foamed ceramic matrix surface, the refractory coating includes the raw material components of following weight percentage: spodumene 6.3%~7.7%, foamed ceramic fine powder 4.5%~5.5%, bentonite 0.9%~1.1%, calcination of talc 0.9%~1.1%, feldspar in powder 1.8%~2.2%, albite in powder 3.6%~4.4%, glass powder 18%~22%, nanometer titanium dioxide Silica hydrogel 18%~22%, alumina powder 9%~11%, aluminium dihydrogen phosphate 13.5%~16.5%, water 13.5%~16.5%.The invention also discloses a kind of preparation methods of fire resisting foamed ceramic.The present invention improves the fire resistance of foamed ceramic since the refractory coating of fire resisting foamed ceramic has preferable heat-proof quality.
Description
Technical field
The present invention relates to field of ceramic preparation more particularly to fire resisting foamed ceramic and preparation method thereof.
Background technique
For foamed ceramic as a kind of high temperature foamed products, inside has a large amount of sealed porosity, therefore low with water absorption rate,
The advantages that insulation, sound insulation is a kind of currently used construction material.However, due to being deposited in the sealed porosity of foamed ceramic
In gas, the gas of sealed porosity when encountering high temperature in surface part be heated volume expansion when to will lead to cavernous structure fried
It splits, so that foamed ceramic surface layer be caused to fall off, reduces the fire resistance of foamed ceramic.
Above content is only used to facilitate the understanding of the technical scheme, and is not represented and is recognized that above content is existing skill
Art.
Summary of the invention
The main purpose of the present invention is to provide a kind of fire resisting foamed ceramic, the fire resisting foamed ceramic includes foamed ceramic
Matrix, and it is set to the refractory coating of the foamed ceramic matrix surface, the refractory coating includes following weight percentage
Raw material components: spodumene 6.3%~7.7%, foamed ceramic fine powder 4.5%~5.5%, bentonite 0.9%~1.1% are forged
Burning talcum 0.9%~1.1%, feldspar in powder 1.8%~2.2%, albite in powder 3.6%~4.4%, glass powder 18%~
22%, nanometer titanium dioxide Silica hydrogel 18%~22%, alumina powder 9%~11%, aluminium dihydrogen phosphate 13.5%~16.5%, water
13.5%~16.5%.
Preferably, the fire resisting foamed ceramic includes foamed ceramic matrix, and is set to the fire resisting on described matrix surface
Coating, the refractory coating include the raw material components of following weight percentage: spodumene 6.7%~7.4%, foamed ceramic fine powder
4.8%~5.3%, bentonite 0.9%~1.1%, calcination of talc 0.9%~1.1%, feldspar in powder 1.9%~2.1%, sodium
Feldspar powder 3.8%~4.2%, glass powder 19%~21%, nanometer titanium dioxide Silica hydrogel 19%~21%, alumina powder 9.5%
~10.5%, aluminium dihydrogen phosphate 14%~16%, water 14%~16%.
Preferably, the fire resisting foamed ceramic includes foamed ceramic matrix, and is set to the fire resisting on described matrix surface
Coating, the refractory coating include the raw material components of following weight percentage: spodumene 7%, foamed ceramic fine powder 5%, swelling
Soil 1%, calcination of talc 1%, feldspar in powder 2%, albite in powder 4%, glass powder 20%, nanometer titanium dioxide Silica hydrogel 20%, oxygen
Change aluminium powder 10%, aluminium dihydrogen phosphate 15%, water 15%.
Preferably, the refractory coating with a thickness of 1.5mm~2.5mm.
In addition, in order to achieve the above object, the fire resisting is sent out the present invention also provides a kind of preparation method of fire resisting foamed ceramic
Steeping ceramic preparation method includes:
Following raw materials: spodumene 6.3%~7.7% are weighed according to following weight percent, foamed ceramic fine powder 4.5%~
5.5%, bentonite 0.9%~1.1%, calcination of talc 0.9%~1.1%, feldspar in powder 1.8%~2.2%, albite in powder
3.6%~4.4%, glass powder 18%~22%, nanometer titanium dioxide Silica hydrogel 18%~22%, alumina powder 9%~11%, phosphorus
Acid dihydride aluminium 13.5%~16.5%, water 13.5%~16.5%；
The weighed raw material is handled to obtain fireproof coating；
The fireproof coating is coated on foamed ceramic matrix, air drying；
The foamed ceramic matrix coated with the fireproof coating after drying is heated to coating hardening, obtains fire resisting foaming
Ceramics.
Preferably, described the step of obtaining fireproof coating handled to the weighed raw material to include:
The weighed spodumene, the foamed ceramic fine powder, the bentonite, the calcination of talc, the potassium is long
After mountain flour, the albite in powder, the glass powder and the water mixing and ball milling, it is solidifying that the weighed nano silica is added
Glue, the mesh alumina powder and the aluminium dihydrogen phosphate, are uniformly mixing to obtain the fireproof coating.
Preferably, described the step of obtaining fireproof coating handled to the weighed raw material to include:
The water of the weighed nanometer titanium dioxide Silica hydrogel and partial amount is mixed to get the first slurry, wherein the portion
The weight percent that the water of component accounts for weighed water is equal to the weight percent that the nanometer titanium dioxide Silica hydrogel accounts for the raw material；
The weighed spodumene, the foamed ceramic fine powder, the bentonite, the calcination of talc, the potassium is long
After mountain flour, the albite in powder, the glass powder, the alumina powder, the aluminium dihydrogen phosphate and remaining water mixing and ball milling,
The weighed aluminium dihydrogen phosphate and the alumina powder is added, is uniformly mixing to obtain the second slurry, wherein first slurry
The fireproof coating is collectively formed with second slurry；
Described that the fireproof coating is coated on foamed ceramic matrix, the step of air drying, includes:
First slurry and second slurry are sequentially coated on foamed ceramic matrix, air drying.
Preferably, specific gravity control any in the fireproof coating, first slurry and second slurry exists
1.6g/ml~1.7g/ml, flow control is in 60s~90s.
Preferably, coating thickness of the fireproof coating on the foamed ceramic matrix is 1.5mm~2.5mm.
Preferably, the temperature of the heating is 130 DEG C~180 DEG C, and heating time is 25min~35min.
Fire resisting foamed ceramic provided by the invention and preparation method thereof, the fire resisting foamed ceramic include foamed ceramic base
Body, and it is set to the refractory coating of the foamed ceramic matrix surface, the refractory coating includes following weight percentage
Raw material components: spodumene 6.3%~7.7%, foamed ceramic fine powder 4.5%~5.5%, bentonite 0.9%~1.1%, calcining
Talcum 0.9%~1.1%, feldspar in powder 1.8%~2.2%, albite in powder 3.6%~4.4%, glass powder 18%~22%,
Nanometer titanium dioxide Silica hydrogel 18%~22%, alumina powder 9%~11%, aluminium dihydrogen phosphate 13.5%~16.5%, water
13.5%~16.5%.Since the refractory coating in fire resisting foamed ceramic has preferable heat-proof quality, foamed ceramic is improved
Fire resistance, the fire endurance of the fire resisting foamed ceramic is up to 1.5h~2h.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Firstly, the preparation method and method for testing performance to fire resisting foamed ceramic provided in an embodiment of the present invention carry out briefly
It summarizes.
The present embodiments relate to fire resisting foamed ceramic preparation method it is as described below:
Fireproof coating preparation: following raw materials: spodumene 6.3%~7.7%, foaming pottery are weighed according to following weight percent
Porcelain fine powder 4.5%~5.5%, bentonite 0.9%~1.1%, calcination of talc 0.9%~1.1%, feldspar in powder 1.8%~
2.2%, albite in powder 3.6%~4.4%, glass powder 18%~22%, nanometer titanium dioxide Silica hydrogel 18%~22%, aluminium oxide
Powder 9%~11%, aluminium dihydrogen phosphate 13.5%~16.5%, water 13.5%~16.5%；At the weighed raw material
Reason obtains fireproof coating.Optionally, the partial size of foamed ceramic fine powder used in the present invention is for 40 mesh hereinafter, the grain of alumina powder
Diameter is 325 mesh.
Wherein, coating preparation can be divided into one-step method and two-step method two ways.
One-step method includes: to slide the weighed spodumene, the foamed ceramic fine powder, the bentonite, the calcining
After stone, the feldspar in powder, the albite in powder, the glass powder and the water mixing and ball milling, the weighed nanometer is added
Silica dioxide gel, the mesh alumina powder and the aluminium dihydrogen phosphate, are uniformly mixing to obtain fireproof coating.In addition, in ball milling
When additive (such as methyl additive, trimerization additive etc.) can be added, and adjust slurry control specific gravity be 1.6g/ml~
1.7g/ml, flow velocity is 60s~90s, so that slurry facilitates coating with good mobility.Control specific gravity and flow velocity
Method can be the adjusting method in conventional slurry preparation, be not particularly limited herein.
Two-step method includes: 1, the water of the weighed nanometer titanium dioxide Silica hydrogel and partial amount is mixed to get the first slurry
Material, wherein the weight percent that the water of the partial amount accounts for weighed water is equal to the nanometer titanium dioxide Silica hydrogel and accounts for the original
The weight percent of material；2, by the weighed spodumene, the foamed ceramic fine powder, the bentonite, the calcination of talc,
The feldspar in powder, the albite in powder, the glass powder, the alumina powder, the aluminium dihydrogen phosphate and remaining water are mixed
After closing ball milling, the weighed aluminium dihydrogen phosphate and the alumina powder is added, the second slurry is uniformly mixing to obtain, in two-step method
In, first slurry and second slurry being prepared collectively form fireproof coating.Equally, first slurry is controlled
Specific gravity with second slurry is 1.6g/ml~1.7g/ml, and flow velocity is 60s~90s,
Coating preparation: the fireproof coating is coated on foamed ceramic matrix, after the completion of fireproof coating coating, is carried out normal
Temperature is dry.The present embodiments relate to foamed ceramic matrix can be any one conventional foamed ceramic.
Since the fireproof coating that one-step method is prepared is a slurry, carries out direct step when coating preparation and incite somebody to action
To fireproof coating be coated in foamed ceramic matrix on, in order to make coating be able to enter the opening of foamed ceramic matrix skin
Hole and guarantee coating have enough thickness, coating carry out 3~4 times coating, finally obtained coating layer thickness be 1.5mm~
2.5mm。
The fireproof coating that two-step method is prepared includes first slurry and second slurry, prepares the time-division in coating
It does not coat, i.e., first slurry and second slurry is sequentially coated on foamed ceramic matrix.It specifically, first will be described
First slurry is coated on foamed ceramic matrix and obtains nano silicon oxide gel coat, wherein in order to make nano oxidized Silica hydrogel
It is capable of the opening hole of filling-foam ceramics and there is certain thickness, 2~3 first slurries need to be coated；Then, then in institute
It states and coats second slurry on nano oxidized silicon coating, then carry out air drying；The fireproof coating that two-step method is prepared
Coating obtained refractory coating includes the coating that the first slurry coats and the coating that the second slurry obtains, and coating layer thickness is
Total coating thickness of total coating thickness of the two coatings, i.e., described first slurry and second slurry be about 1.5mm~
2.5mm。
Heat hardening: the foamed ceramic matrix heating after drying coated with the fireproof coating (such as can be put into dry
Heated in dry case) it is hardened to coating to get fire resisting foamed ceramic is arrived, wherein heating and temperature control is 130 DEG C~180 DEG C,
A length of 25min~35min when heating.
In the material that the present invention uses, the foamed ceramic fine powder ingredient is identical as the foamed ceramic as matrix, can be with
It is the fine powder that any one foamed ceramic is prepared, optionally, the foamed ceramic fine powder includes following weight percentage
Component are as follows: SiO2: 70.02%, Al2O3: 14.58%, Fe2O3: 1.44%, TiO2: 0.18%, CaO:1.30%, MgO:
2.23%, K2O:6.36%, Na2O:2.44%, loss on ignition: 1.79%.The glass powder can be the broken glass waste material system of recycling
It is standby to obtain.
The fire resisting foamed ceramic being prepared according to above-mentioned preparation method includes foamed ceramic matrix, and is set to described
The refractory coating of foamed ceramic matrix surface, the refractory coating include the raw material components of following weight percentage: spodumene
6.3%~7.7%, foamed ceramic fine powder 4.5%~5.5%, bentonite 0.9%~1.1%, calcination of talc 0.9%~
1.1%, feldspar in powder 1.8%~2.2%, albite in powder 3.6%~4.4%, glass powder 18%~22%, nano silica
Gel 18%~22%, alumina powder 9%~11%, aluminium dihydrogen phosphate 13.5%~16.5%, water 13.5%~16.5%.
It is to be appreciated that since the water in the raw material components of refractory coating has evaporated in the drying process, institute
The ingredient components for stating refractory coating are made of the other components in the raw material components in addition to water.
Performance detection: according to GB/T9978.-2008, the building in GB/T9978.8-2008 constructs fire resistance test method
The fire resisting foamed ceramic of preparation is tested, coating is recorded and foamed ceramic base structure keeps complete maximum time conduct
Fire endurance.
Embodiment 1
Following raw materials: spodumene 6.3%, foamed ceramic fine powder 5.5%, bentonite are weighed according to following weight percent
0.9%, calcination of talc 0.9%, feldspar in powder 1.8%, albite in powder 3.6%, glass powder 22%, nanometer titanium dioxide Silica hydrogel
18%, alumina powder 11%, aluminium dihydrogen phosphate 13.5%, water 16.5%；
By the weighed spodumene, foamed ceramic fine powder, bentonite, calcination of talc, feldspar in powder, albite in powder and institute
Stating raw material described in glass powder adds water for ball milling to obtain slurry；
It is added into the slurry the weighed nanometer titanium dioxide Silica hydrogel, the mesh alumina powder and the di(2-ethylhexyl)phosphate
Hydrogen aluminium is uniformly mixing to obtain fireproof coating 1；
The fireproof coating is coated 3 times on foamed ceramic matrix, measures coating thickness about 1.5mm；
The foamed ceramic coated with the fireproof coating after drying is put into drying box, controlled at 130 DEG C, is added
Hot 35min, hardens coating, obtains fire resisting foamed ceramic 1.
Fire resisting test is carried out to fire resisting foamed ceramic 1, fire endurance is 1.5h as the result is shown.
Embodiment 2
Following raw materials: spodumene 6.7%, foamed ceramic fine powder 5.3%, bentonite are weighed according to following weight percent
0.9%, calcination of talc 0.9%, feldspar in powder 1.9%, albite in powder 3.8%, glass powder 21%, nanometer titanium dioxide Silica hydrogel
19%, alumina powder 10.5%, aluminium dihydrogen phosphate 14%, water 16%；
By the weighed spodumene, foamed ceramic fine powder, bentonite, calcination of talc, feldspar in powder, albite in powder and institute
Stating raw material described in glass powder adds water for ball milling to obtain slurry；
It is added into the slurry the weighed nanometer titanium dioxide Silica hydrogel, the mesh alumina powder and the di(2-ethylhexyl)phosphate
Hydrogen aluminium is uniformly mixing to obtain fireproof coating 2；
The fireproof coating is coated 3 times on foamed ceramic matrix, measures coating thickness about 1.7mm；
The foamed ceramic coated with the fireproof coating after drying is put into drying box, controlled at 140 DEG C, is added
Hot 30min, hardens coating, obtains fire resisting foamed ceramic 2.
Fire resisting test is carried out to fire resisting foamed ceramic 2, fire endurance is 1.7h as the result is shown.
Embodiment 3
Following raw materials: spodumene 7%, foamed ceramic fine powder 5% are weighed according to following weight percent, bentonite 1% is forged
Burn talcum 1%, feldspar in powder 2%, albite in powder 4%, glass powder 20%, nanometer titanium dioxide Silica hydrogel 20%, alumina powder
10%, aluminium dihydrogen phosphate 15%, water 15%；
By the weighed spodumene, foamed ceramic fine powder, bentonite 0.9%, calcination of talc, feldspar in powder, albite
Raw material described in powder and the glass powder adds water for ball milling to obtain slurry；
It is added into the slurry the weighed nanometer titanium dioxide Silica hydrogel, the mesh alumina powder and the di(2-ethylhexyl)phosphate
Hydrogen aluminium is uniformly mixing to obtain fireproof coating 3；
The fireproof coating is coated 4 times on foamed ceramic matrix, measures coating thickness about 2.5mm；
The foamed ceramic coated with the fireproof coating after drying is put into drying box, controlled at 150 DEG C, is added
Hot 30min, hardens coating, obtains fire resisting foamed ceramic 3.
Fire resisting test is carried out to fire resisting foamed ceramic 3, fire endurance is 2h as the result is shown.
Embodiment 4
Following raw materials: spodumene 7.4%, foamed ceramic fine powder 4.8%, bentonite are weighed according to following weight percent
1%, calcination of talc 1%, feldspar in powder 2.1%, albite in powder 4.2%, glass powder 19%, nanometer titanium dioxide Silica hydrogel 21%,
Alumina powder 9.5%, aluminium dihydrogen phosphate 16%, water 14%；
By the weighed spodumene, foamed ceramic fine powder, bentonite, calcination of talc, feldspar in powder, albite in powder and institute
Stating raw material described in glass powder adds water for ball milling to obtain slurry；
It is added into the slurry the weighed nanometer titanium dioxide Silica hydrogel, the mesh alumina powder and the di(2-ethylhexyl)phosphate
Hydrogen aluminium is uniformly mixing to obtain fireproof coating 4；
The fireproof coating is coated 4 times on foamed ceramic matrix, measures coating thickness about 2.3mm；
The foamed ceramic coated with the fireproof coating after drying is put into drying box, controlled at 160 DEG C, is added
Hot 25min, hardens coating, obtains fire resisting foamed ceramic 4.
Fire resisting test is carried out to fire resisting foamed ceramic 4, fire endurance is 1.8h as the result is shown.
Embodiment 5
Following raw materials: spodumene 7.7%, foamed ceramic fine powder 4.5%, bentonite are weighed according to following weight percent
1.1%, calcination of talc 1.1%, feldspar in powder 2.2%, albite in powder 4.4%, glass powder 18%, nanometer titanium dioxide Silica hydrogel
22%, alumina powder 9%, aluminium dihydrogen phosphate 16.5%, water 13.5%；
By the weighed spodumene, foamed ceramic fine powder, bentonite, calcination of talc, feldspar in powder, albite in powder and institute
Stating raw material described in glass powder adds water for ball milling to obtain slurry；
It is added into the slurry the weighed nanometer titanium dioxide Silica hydrogel, the mesh alumina powder and the di(2-ethylhexyl)phosphate
Hydrogen aluminium is uniformly mixing to obtain fireproof coating 5；
The fireproof coating is coated 3 times on foamed ceramic matrix, measures coating thickness about 1.6mm；
The foamed ceramic coated with the fireproof coating after drying is put into drying box, controlled at 180 DEG C, is added
Hot 25min, hardens coating, obtains fire resisting foamed ceramic 5.
Fire resisting test is carried out to fire resisting foamed ceramic 5, fire endurance is 1.6h as the result is shown.
Embodiment 6
Following raw materials: spodumene 7%, foamed ceramic fine powder 5% are weighed according to following weight percent, bentonite 1% is forged
Burn talcum 1%, feldspar in powder 2%, albite in powder 4%, glass powder 20%, nanometer titanium dioxide Silica hydrogel 20%, alumina powder
10%, aluminium dihydrogen phosphate 15%, water 15%；
The weighed nanometer titanium dioxide Silica hydrogel and part water (account for weighed water 20%) are mixed to get the first slurry
Material；
By the weighed spodumene, the foamed ceramic fine powder, the bentonite, the calcination of talc, the potassium is long
Mountain flour, the albite in powder, the glass powder, after the alumina powder, the aluminium dihydrogen phosphate and remaining water mixing and ball milling,
The weighed aluminium dihydrogen phosphate and the alumina powder is added, is uniformly mixing to obtain the second slurry；
First slurry is being coated 3 times on foamed ceramic matrix, is obtaining first coating, by the second slurry be coated in receive
Second coating is obtained on rice silica dioxide gel coating, air drying measures the first coating and the second coating total thickness
Spend about 2.5mm；
The foamed ceramic coated with the fireproof coating after drying is put into drying box, controlled at 150 DEG C, is added
Hot 25min, hardens coating, obtains fire resisting foamed ceramic 6.
Fire resisting test is carried out to fire resisting foamed ceramic 6, fire endurance is 2h as the result is shown.
The present embodiment is compared with embodiment 3 (the best embodiment of effect in embodiment 1-5), in addition to prepared by coating and coating
Method different (embodiment 3 is prepared according to the one-step method, and the present embodiment prepare according to the two-step method) outside, remaining technique with
Parameter is same as Example 3, and the fire resisting foamed ceramic 3 and the present embodiment that fire resisting test result embodiment 3 is prepared are prepared into
The fire endurance having the same of fire resisting foamed ceramic 6 arrived illustrates the one-step method and prepares fireproof coating with the two-step method
It can reach identical effect with refractory coating.
After testing, in the fireproof coating 1-5 in above-described embodiment, first slurry and second slurry
Within the scope of 1.6g/ml~1.7g/ml, flow velocity is also within the scope of 60s~90s the specific gravity of any one, specific gravity and stream
Speed is moderate, facilitates coating.
As can be seen from the above results, the fire endurance for the fire resisting foamed ceramic that any embodiment obtains in embodiment 1-6
Reach 1.5h~2h, being coated in the refractory coating obtained on foamed ceramic matrix this is mainly due to fireproof coating has preferably
Heat-proof quality, so as to slow down the heating rate of ceramic matrix, so that the air in the stomata of foamed ceramic will not be due to urgency
Play expands and surface layer stomata is caused to burst, so that the fire endurance with higher of fire resisting foamed ceramic, improves foaming
The fire resistance of ceramics.
Based on embodiment 3 (the best embodiment of effect in embodiment 1-5), comparative example is further set and inquires into fire resisting
The effect of part material in coating.
Comparative example 1
Relative to embodiment 3, the present embodiment except in weighed raw material not in addition to nano-silica-containing gel, remaining technique and
Parameter is same as Example 3, and comparison foamed ceramic 1 is prepared.
Fire resisting test result shows that comparison 1 fire endurance of foamed ceramic is 45min, and foamed ceramic matrix is cracked, resistance to
The fiery limit is much smaller than the fire resisting foamed ceramic 3 that embodiment 3 is prepared.This may be to lead since coating is heated rear thermally conductive too fast
It causes the foamed ceramic matrix through-thickness temperature difference larger, generates thermostabilization difference drawing crack foamed ceramic matrix.Illustrate in refractory coating
In ingredient, nanometer titanium dioxide Silica hydrogel acts that slow down coating thermally conductive too fast.
Comparative example 2
Relative to embodiment 3, the present embodiment in addition to being free of aluminium dihydrogen phosphate in weighed raw material, remaining technique and parameter with
Embodiment 3 is identical, and comparison foamed ceramic 2 is prepared.
Fire resisting test result is shown, coating shedding, coating failure occurs at detection initial stage.This may be due to not having phosphorus
Acid dihydride aluminium (plays adhesive), and refractory coating and foamed ceramic substrate combinating strength be not high, and coating produces at heated initial stage
Life falls off.Illustrate that the aluminium dihydrogen phosphate as adhesive keeps integrality to play an important role refractory coating at heated initial stage.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the system that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or system institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or system.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent article or equivalent process transformation made by bright description are applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (10)
1. a kind of fire resisting foamed ceramic, which is characterized in that the fire resisting foamed ceramic includes foamed ceramic matrix, and is set to
The refractory coating of the foamed ceramic matrix surface, the refractory coating include the raw material components of following weight percentage: lithium brightness
Stone 6.3%~7.7%, foamed ceramic fine powder 4.5%~5.5%, bentonite 0.9%~1.1%, calcination of talc 0.9%~
1.1%, feldspar in powder 1.8%~2.2%, albite in powder 3.6%~4.4%, glass powder 18%~22%, nano silica
Gel 18%~22%, alumina powder 9%~11%, aluminium dihydrogen phosphate 13.5%~16.5%, water 13.5%~16.5%.
2. fire resisting foamed ceramic as described in claim 1, which is characterized in that the fire resisting foamed ceramic includes foamed ceramic base
Body, and it is set to the refractory coating on described matrix surface, the refractory coating includes the raw material components of following weight percentage:
Spodumene 6.7%~7.4%, foamed ceramic fine powder 4.8%~5.3%, bentonite 0.9%~1.1%, calcination of talc 0.9%
~1.1%, feldspar in powder 1.9%~2.1%, albite in powder 3.8%~4.2%, glass powder 19%~21%, nanometer titanium dioxide
Silica hydrogel 19%~21%, alumina powder 9.5%~10.5%, aluminium dihydrogen phosphate 14%~16%, water 14%~16%.
3. fire resisting foamed ceramic as described in claim 1, which is characterized in that the fire resisting foamed ceramic includes foamed ceramic base
Body, and it is set to the refractory coating on described matrix surface, the refractory coating includes the raw material components of following weight percentage:
Spodumene 7%, foamed ceramic fine powder 5%, bentonite 1%, calcination of talc 1%, feldspar in powder 2%, albite in powder 4%, glass
Powder 20%, nanometer titanium dioxide Silica hydrogel 20%, alumina powder 10%, aluminium dihydrogen phosphate 15%, water 15%.
4. fire resisting foamed ceramic as described in any one of claims 1-3, which is characterized in that the refractory coating with a thickness of
1.5mm~2.5mm.
5. a kind of preparation method of fire resisting foamed ceramic, which is characterized in that the preparation method of the fire resisting foamed ceramic includes:
Following raw materials: spodumene 6.3%~7.7% are weighed according to following weight percent, foamed ceramic fine powder 4.5%~
5.5%, bentonite 0.9%~1.1%, calcination of talc 0.9%~1.1%, feldspar in powder 1.8%~2.2%, albite in powder
3.6%~4.4%, glass powder 18%~22%, nanometer titanium dioxide Silica hydrogel 18%~22%, alumina powder 9%~11%, phosphorus
Acid dihydride aluminium 13.5%~16.5%, water 13.5%~16.5%；
The weighed raw material is handled to obtain fireproof coating；
The fireproof coating is coated on foamed ceramic matrix, air drying；
The foamed ceramic matrix coated with the fireproof coating after drying is heated to coating hardening, obtains fire resisting foaming pottery
Porcelain.
6. the preparation method of fire resisting foamed ceramic as claimed in claim 5, which is characterized in that described to the weighed raw material
Being handled the step of obtaining fireproof coating includes:
By the weighed spodumene, the foamed ceramic fine powder, the bentonite, the calcination of talc, the feldspar in powder,
After the albite in powder, the glass powder and the water mixing and ball milling, the weighed nanometer titanium dioxide Silica hydrogel, described is added
Mesh alumina powder and the aluminium dihydrogen phosphate, are uniformly mixing to obtain the fireproof coating.
7. the preparation method of fire resisting foamed ceramic as claimed in claim 5, which is characterized in that described to the weighed raw material
Being handled the step of obtaining fireproof coating includes:
The water of the weighed nanometer titanium dioxide Silica hydrogel and partial amount is mixed to get the first slurry, wherein the partial amount
Water account for the weight percent of weighed water and be equal to the nanometer titanium dioxide Silica hydrogel and account for the weight percent of the raw material；
By the weighed spodumene, the foamed ceramic fine powder, the bentonite, the calcination of talc, the feldspar in powder,
After the albite in powder, the glass powder, the alumina powder, the aluminium dihydrogen phosphate and remaining water mixing and ball milling, it is added
The weighed aluminium dihydrogen phosphate and the alumina powder, are uniformly mixing to obtain the second slurry, wherein first slurry and institute
It states the second slurry and collectively forms the fireproof coating；
Described that the fireproof coating is coated on foamed ceramic matrix, the step of air drying, includes:
First slurry and second slurry are sequentially coated on foamed ceramic matrix, air drying.
8. such as the preparation method of the described in any item fire resisting foamed ceramics of claim 5-7, which is characterized in that the fire resisting applies
In 1.6g/ml~1.7g/ml, flow control exists any specific gravity control in material, first slurry and second slurry
60s~90s.
9. such as the preparation method of the described in any item fire resisting foamed ceramics of claim 5-7, which is characterized in that the fireproof coating
Coating thickness on the foamed ceramic matrix is 1.5mm~2.5mm.
10. such as the preparation method of the described in any item fire resisting foamed ceramics of claim 5-7, which is characterized in that the heating
Temperature is 130 DEG C~180 DEG C, and heating time is 25min~35min.
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| CN110981431A (en) * | 2019-12-31 | 2020-04-10 | 江西中材新材料有限公司 | Foamed ceramic product preparation method and foamed ceramic product |
| CN111825470A (en) * | 2020-08-07 | 2020-10-27 | 安徽瑞蒙科技有限公司 | Fireproof bottom slurry for foamed ceramic insulation board and preparation and application methods thereof |
| CN111943714A (en) * | 2019-05-15 | 2020-11-17 | 广东金意陶陶瓷集团有限公司 | Production process of low-temperature sintered foamed ceramic |
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