CN107382363A - A kind of ceramic thermal insulation material and preparation method thereof - Google Patents

A kind of ceramic thermal insulation material and preparation method thereof Download PDF

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Publication number
CN107382363A
CN107382363A CN201710653224.6A CN201710653224A CN107382363A CN 107382363 A CN107382363 A CN 107382363A CN 201710653224 A CN201710653224 A CN 201710653224A CN 107382363 A CN107382363 A CN 107382363A
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parts
thermal insulation
insulation material
ceramic thermal
raw material
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Inventor
马存喜
曹明普
陈艳晓
丁利桥
张健恩
王晓华
胡松阳
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Zhengzhou Deng Electricity Ke Cheng New Material Co Ltd
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Zhengzhou Deng Electricity Ke Cheng New Material Co Ltd
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    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
    • C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3409—Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
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    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
    • C04B2235/3472—Alkali metal alumino-silicates other than clay, e.g. spodumene, alkali feldspars such as albite or orthoclase, micas such as muscovite, zeolites such as natrolite
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3817—Carbides
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/447—Phosphates or phosphites, e.g. orthophosphate, hypophosphite
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/449—Organic acids, e.g. EDTA, citrate, acetate, oxalate
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient

Abstract

The present invention discloses a kind of ceramic thermal insulation material, is made up of the raw material of following parts by weight：40 70 parts of shale, 10 35 parts of flyash, 14 parts of auxiliary agent, 25 parts of foaming agent, 15 parts of stabilizer.Its corresponding preparation method, comprises the following steps：1）Above-mentioned each raw material is crushed, after mixing, is ground, dries, is granulated, obtain pellet；2）Again by step 1）Gained pellet is calcined 40 90min at 1,150 1250 DEG C, and ceramic thermal insulation material is produced after cooling.The ceramic thermal insulation material surface cell diameter of the present invention is less than 2mm, based on cordierite crystalline phase, forms a small amount of mullite crystalline phase, compression strength is more than 0.15MPa, and density is less than 200Kg/m 3, thermal conductivity factor is not more than 0.055W/（m·K）, its combustibility reaches A1 levels.

Description

A kind of ceramic thermal insulation material and preparation method thereof
Technical field
The invention belongs to insulation material technical field, and in particular to a kind of ceramic thermal insulation material and preparation method thereof.
Background technology
As building energy conservation and fire protecting performance require more and more higher, foamed ceramic insulation material be develop in recent years it is new Wall heat insulation material, its one side can improve wall insulation performance, on the other hand economize on resources, reduce environmental pollution.At present, Exterior insulation is typically using clay mine tailing, potsherd, riverway sludge etc. as primary raw material, using advanced production The closed pore ceramic material for the high porosity that technique and foaming technique form through high-temperature roasting, the material are applied to make external wall guarantor Temperature, fire-blocking belt or the cold-heat bridge processing of building self-heat conserving etc., but the fire-protection rating of existing ceramic thermal insulation material is inadequate, it is impossible to It is enough to play flameproof effect well；During as exterior-wall heat insulation, other insulation materials are generally added to strengthen insulated fire effect again.
The content of the invention
Present invention aims at a kind of ceramic thermal insulation material with fire protection flame retarding, stable performance of offer, while provide it Corresponding preparation method is another goal of the invention of the present invention.
Based on object above, the present invention takes following technical scheme：
A kind of ceramic thermal insulation material, is made up of the raw material of following parts by weight：Shale 40-70 parts, flyash 10-35 parts, auxiliary agent 1-4 parts, foaming agent 2-5 parts, stabilizer 1-5 parts.
The percentage composition of each component is in the shale：Silica 54-65%, aluminum oxide 15-25%, calcium oxide 1-6%, Other components 5-15%.
The auxiliary agent is albite or potassium feldspar.
The foaming agent is carborundum.
The stabilizer is selected from phosphate, borate and acetate.
The preparation method of ceramic thermal insulation material, comprises the following steps：
1）Above-mentioned each raw material is crushed, after mixing, is ground, dries, is granulated, obtain pellet；
2）Again by step 1）Gained pellet is calcined 40-90min at 1150-1250 DEG C, and ceramic thermal insulation material is produced after cooling.
Step 1）Middle milling time is 12-30h；The particle diameter of pellet is 1-4mm.
Compared with prior art, the invention has the advantages that：
1）The ceramic thermal insulation material surface cell diameter of the present invention is less than 2mm, based on cordierite crystalline phase, is formed a small amount of not next Stone crystalline phase, compression strength are more than 0.15MPa, and density is less than 200Kg/m 3, thermal conductivity factor is not more than 0.055W/（m·K）, Its combustibility reaches A1 levels；
2）The stabilizers such as phosphate, borate and acetate are added in the present invention, can effectively prevent pellet in high-temperature roasting, The minute bubbles of formation are bound to each other to form connection stomata or directly rupture, beneficial to stablizing bubble structure, while play reduction heat conduction Coefficient, the effect for improving product strength；The use of carborundum is foaming agent, beneficial to uniform in foaming, it reduces production cost；
3）Preparation method of the present invention is simple, and device therefor is less in technical process, is used beneficial to large-scale promotion.
Brief description of the drawings
Fig. 1 is finished product design sketch made from the embodiment of the present invention 1.
Embodiment
Embodiment 1
A kind of ceramic thermal insulation material, is made up of the raw material of following parts by weight：65 parts of shale, 25 parts of flyash, potassium feldspar（Auxiliary agent） 4 parts, carborundum（Foaming agent）3 parts, phosphate（Stabilizer）3 parts.
The percentage composition of each component is in the shale：Silica 54%, aluminum oxide 25%, calcium oxide 6%, other components 15%.
A kind of preparation method of ceramic thermal insulation material, comprises the following steps：
1）Each raw material weighed up is crushed, after mixing, 30h is ground in ball mill, drying, is granulated, obtain the grain that particle diameter is 1mm Material；
2）Again by step 1）Gained pellet is calcined 90min at 1150 DEG C, and ceramic thermal insulation material is produced after cooling.
Embodiment 2
A kind of ceramic thermal insulation material, is made up of the raw material of following parts by weight：55 parts of shale, 31 parts of flyash, potassium feldspar（Auxiliary agent）4 Part, carborundum（Foaming agent）5 parts, phosphate（Stabilizer）5 parts.
The percentage composition of each component is in the shale：Silica 65%, aluminum oxide 20%, calcium oxide 1%, other components 14%.
A kind of preparation method of ceramic thermal insulation material, comprises the following steps：
1）Each raw material weighed up is crushed, after mixing, 12h is ground in ball mill, drying, is granulated, obtain the grain that particle diameter is 4mm Material；
2）Again by step 1）Gained pellet is calcined 60min at 1200 DEG C, and ceramic thermal insulation material is produced after cooling.
Embodiment 3
A kind of ceramic thermal insulation material, is made up of the raw material of following parts by weight：45 parts of shale, 35 parts of flyash, potassium feldspar（Auxiliary agent） 2 parts, carborundum（Foaming agent）3 parts, acetate（Stabilizer）3 parts.
The percentage composition of each component is in the shale：Silica 60%, aluminum oxide 22%, calcium oxide 5%, other components 13%.
A kind of preparation method of ceramic thermal insulation material, comprises the following steps：
1）Each raw material weighed up is crushed, after mixing, 20h is ground in ball mill, drying, is granulated, obtain the grain that particle diameter is 3mm Material；
2）Again by step 1）Gained pellet is calcined 40min at 1250 DEG C, and ceramic thermal insulation material is produced after cooling.
Embodiment 4
A kind of ceramic thermal insulation material, is made up of the raw material of following parts by weight：40 parts of shale, 15 parts of flyash, potassium feldspar（Auxiliary agent） 1 part, carborundum（Foaming agent）2 parts, acetate (stabilizer）1 part.
The percentage composition of each component is in the shale：Silica 63%, aluminum oxide 18%, calcium oxide 4%, other components 15%.
A kind of preparation method of ceramic thermal insulation material, comprises the following steps：
1）Each raw material weighed up is crushed, after mixing, 18h is ground in ball mill, drying, is granulated, obtain the grain that particle diameter is 1mm Material；
2）Again by step 1）Gained pellet is calcined 70min at 1180 DEG C, and ceramic thermal insulation material is produced after cooling.
Embodiment 5
A kind of ceramic thermal insulation material, is made up of the raw material of following parts by weight：70 parts of shale, 10 parts of flyash, potassium feldspar（Auxiliary agent） 3 parts, carborundum（Foaming agent）4 parts, borate（Stabilizer）5 parts.
The percentage composition of each component is the same as embodiment 1 in the shale.
A kind of preparation method of ceramic thermal insulation material, comprises the following steps：
1）Each raw material weighed up is crushed, after mixing, 25h is ground in ball mill, drying, is granulated, obtain the grain that particle diameter is 4mm Material；
2）Again by step 1）Gained pellet is calcined 80min at 1220 DEG C, and ceramic thermal insulation material is produced after cooling.
Embodiment 6
A kind of ceramic thermal insulation material, is made up of the raw material of following parts by weight：48 parts of shale, 25 parts of flyash, potassium feldspar（Auxiliary agent） 2 parts, carborundum（Foaming agent）4 parts, phosphate（Stabilizer）3 parts.
The percentage composition of each component is the same as embodiment 2 in the shale.
The preparation method of embodiment 1-6 ceramic thermal insulation material, comprises the following steps：
1）Each raw material weighed up is crushed, after mixing, 15h is ground in ball mill, drying, is granulated, obtain the grain that particle diameter is 4mm Material；
2）Again by step 1）Gained pellet is calcined 75min at 1230 DEG C, and ceramic thermal insulation material is produced after cooling.
The performance test of embodiment 7
By the sample obtained by above-described embodiment 1-6（Fig. 1 is the sample of embodiment 1, it is seen that its uniform in foaming）, to its density, Thermal conductivity factor, compression strength, the tensile strength of vertical direction, volume water absorption rate etc. are tested, and test result is as follows（Test knot Fruit is the average value of 6 samples）：
Density is 130 Kg/m 3, its method of testing is with reference to GB/T6343-2009；
Thermal conductivity factor is 0.054W/（m·K）（At 25 DEG C）, its method of testing is with reference to GB/T10295-2008；
Compression strength is 0.53MPa, and its method of testing is with reference to GB/T5486-2008；
Tensile strength perpendicular to material board direction is 0.24MPa, and its method of testing is with reference to JG/T149-2003；
Volume water absorption rate is 0.7%, and its method of testing is with reference to GB/T5486-2008.
With reference to GB/T5464-1999 detection method, during to average temperature rising in embodiment 1-6 stove, average sustained combustion Between, sample mean mass loss amount tested, its test result be followed successively by：3 DEG C, 0s, 7.9%, meet the non-ignitable class material of A levels Material standard.
With reference to GB/T8624-2006《Construction material and product burns grading performance》Embodiment 1-6 sample is examined Test, its combustibility reaches A1 levels.

Claims (7)

1. a kind of ceramic thermal insulation material, it is characterised in that be made up of the raw material of following parts by weight：Shale 40-70 parts, flyash 10-35 parts, auxiliary agent 1-4 parts, foaming agent 2-5 parts, stabilizer 1-5 parts.
2. ceramic thermal insulation material as claimed in claim 1, it is characterised in that the percentage composition of each component is in the shale： Silica 54-65%, aluminum oxide 15-25%, calcium oxide 1-6%, other components 5-15%.
3. ceramic thermal insulation material as claimed in claim 1, it is characterised in that the auxiliary agent is albite or potassium feldspar.
4. ceramic thermal insulation material as claimed in claim 1, it is characterised in that the foaming agent is carborundum.
5. ceramic thermal insulation material as claimed in claim 1, it is characterised in that the stabilizer be selected from phosphate, borate and Acetate.
6. the preparation method of any described ceramic thermal insulation materials of claim 1-5, it is characterised in that comprise the following steps：
1）Above-mentioned each raw material is crushed, after mixing, is ground, dries, is granulated, obtain pellet；
2）Again by step 1）Gained pellet is calcined 40-90min at 1150-1250 DEG C, and ceramic thermal insulation material is produced after cooling.
7. the preparation method of ceramic thermal insulation material as claimed in claim 6, it is characterised in that step 1）Middle milling time is 12-30h；The particle diameter of pellet is 1-4mm.
CN201710653224.6A 2017-08-02 2017-08-02 A kind of ceramic thermal insulation material and preparation method thereof Pending CN107382363A (en)

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Cited By (5)

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CN110963784A (en) * 2019-12-31 2020-04-07 郑州登电科诚新材料有限公司 Production process for recycling cutting waste of foamed ceramic insulation board
CN111039693A (en) * 2019-12-31 2020-04-21 郑州登电科诚新材料有限公司 Production process of ceramic fiber paper recycled foamed ceramic insulation board
CN111943642A (en) * 2019-05-15 2020-11-17 广东金意陶陶瓷集团有限公司 High-strength foamed ceramic and preparation method thereof
CN112209624A (en) * 2019-07-11 2021-01-12 广东金意陶陶瓷集团有限公司 Foamed ceramic with high thermal stability and fire resistance and preparation method thereof
WO2021032183A1 (en) * 2019-08-21 2021-02-25 山西天合新材料科技有限公司 Multi-function ecological exterior wall and preparation method therefor

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Publication number Priority date Publication date Assignee Title
CN111943642A (en) * 2019-05-15 2020-11-17 广东金意陶陶瓷集团有限公司 High-strength foamed ceramic and preparation method thereof
CN112209624A (en) * 2019-07-11 2021-01-12 广东金意陶陶瓷集团有限公司 Foamed ceramic with high thermal stability and fire resistance and preparation method thereof
WO2021032183A1 (en) * 2019-08-21 2021-02-25 山西天合新材料科技有限公司 Multi-function ecological exterior wall and preparation method therefor
US20220170263A1 (en) * 2019-08-21 2022-06-02 Shanxi Tianhe New Material Technology Co. , Ltd. Multi-function ecological exterior wall and preparation method therefor
CN110963784A (en) * 2019-12-31 2020-04-07 郑州登电科诚新材料有限公司 Production process for recycling cutting waste of foamed ceramic insulation board
CN111039693A (en) * 2019-12-31 2020-04-21 郑州登电科诚新材料有限公司 Production process of ceramic fiber paper recycled foamed ceramic insulation board

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