CN107382336A - A kind of fiber reinforced refractory material powder - Google Patents
A kind of fiber reinforced refractory material powder Download PDFInfo
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- CN107382336A CN107382336A CN201710526852.8A CN201710526852A CN107382336A CN 107382336 A CN107382336 A CN 107382336A CN 201710526852 A CN201710526852 A CN 201710526852A CN 107382336 A CN107382336 A CN 107382336A
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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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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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
- C04B35/03—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/057—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on calcium 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
- 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
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63444—Nitrogen-containing polymers, e.g. polyacrylamides, polyacrylonitriles, polyvinylpyrrolidone [PVP], polyethylenimine [PEI]
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5212—Organic
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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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5284—Hollow fibers, e.g. nanotubes
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
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Abstract
The present invention relates to technical field of refractory materials.The invention discloses a kind of fiber reinforced refractory material powder, it is mainly made by the raw material of following parts by weight：40 parts of magnesia, 80~90 parts of calcium oxide, 5.5~6.5 parts of toughened fiber, 1~1.3 part of binding agent.（1）Reasonable raw material proportioning in the present invention, can realize has higher fire resistance, while also suitably can reduce cost；（2）Fiber reinforced refractory material powder can use after aluminosilicate cement is properly added as unshape refractory；（3）The refractory material being prepared, which can be made, in fiber reinforced refractory material powder has higher fracture toughness, has the performance of more preferable resistance to mechanical impact.
Description
Technical field
The present invention relates to technical field of refractory materials, more particularly, to a kind of fiber reinforced refractory material powder.
Background technology
In traditional sense, refractory material refers to that refractoriness is not less than 1580 DEG C of inorganic non-metallic material, and it is for height
The basic material of temperature technique service, it is used as the structural material of the Thermal Equipments such as high temperature kiln, and industrial high temperature container and portion
The material of part, and corresponding physicochemical change and mechanism can be born.
Most of refractory material is with natural crystal（Such as fire clay, silica, magnesite, dolomite）Manufactured for raw material
, using some raw materials of industry and artificial-synthetic material（Such as commercial alumina, carborundum, mullite synthesizing, synthetic spinel
Deng）Also increasing, therefore, the species of refractory material is a lot.Refractory material can be divided into according to mineral composition aoxidizes siliceous, silicon
Sour aluminum, magnesia, dolomite matter, olivine matter, spinel, containing carbonaceous, containing zirconia refractory and special refractory；Press
It can be divided into natural crystal and artifact according to manufacture method；It can be divided into block elements and unshape refractory by its mode；
It can be divided into not burned product, burnt product and melt-cast products according to heat treatment mode；It can be divided into according to refractoriness common, advanced and special
Level refractory product；It can be divided into acid, neutral and basic refractory according to chemical property；It can be divided into lightweight and again according to its density
Fire resistant materials；Shape and size according to its product can be divided into standard brick, special shaped brick, special special shaped brick, pipe and flame ware；Also
Blast furnace use, cement kiln use, glass furnace use, ceramic kiln refractory etc. can be divided into by its application.
It is a problem of generally existing in inorganic non-metallic and material that the mechanical tenacity of inorganic non-metallic material is poor, is made
To belong to the refractory material of inorganic non-metallic material together, its mechanical tenacity is also poor, although refractory material is almost in use
It need not move, but thermal shock resistance when its poor mechanical tenacity has also had influence on its high temperature, it is anxious in chilling
Gap that is hot and using is resistance to because the influences such as cracking, peeling easily occur under the effect of expanding with heat and contract with cold for larger temperature difference refractory material
The situation of fiery material integrity, reduce the service life of refractory material；Need often to move simultaneously for those resistance to
Fiery material product, its poor mechanical tenacity can then greatly increase the spoilage of refractory product, influence its routine use.
The content of the invention
To solve the above problems, can be used to fire refractory material by toughness reinforcing processing the invention provides one kind, also may be used
Fiber reinforced refractory material powder as unshape refractory.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of fiber reinforced refractory material powder, is mainly made by the raw material of following parts by weight：
40 parts of magnesia, 80~90 parts of calcium oxide, 5.5~6.5 parts of toughened fiber, 1~1.3 part of binding agent.
In refractory material, dolomite series refractory material is a kind of important refractory material.Magnesia and calcium oxide are one
Certainty ratio mixes and the refractory material of dolomite matter can be obtained after sintered, when magnesia and calcium oxide mol ratio are 0.25：
0.75 or so is that can generate most dolomite phases, has a best fire resistance, magnesia with two kinds of components of calcium oxide,
The cost of calcium oxide is more cheap, and more calcium oxide are added in appropriate scope to minimize cost, but oxygen
Change the reduction that the dolomite of the stabilization generated after the too high levels of calcium is met drastically, the refractoriness of obtained refractory material also can
Decline to a great extent accordingly, therefore the mol ratio of magnesia and calcium oxide is positioned 0.3：0.7 or so, and carried out according to being actually needed
Corresponding adjustment, can so realize can reduce cost as far as possible, also can guarantee that refractoriness within tolerance interval.
Refractory material powder in the present invention can be used as unsetting fire resisting after addition 15wt% aluminosilicate cement
Materials'use.
Preferably, toughened fiber is hollow acetate fibre.
Preferably, the length of toughened fiber is 10~20 microns.
Acetate fiber is that one kind by cellulose be raw material, and chemistry fibre made of acetyl cellulose is changed into method through chemistry
Dimension, has higher carbon content, excellent carbon fiber can be obtained after reducing atmosphere pyroreaction；In the system of acetate fiber
0.5wt% titanium dioxide is often added as delustering agent during standby.Therefore, acetate fiber has following two features, and 1.
With higher carbon content, excellent carbon fiber can be generated after reducing atmosphere pyroreaction, is contained in 2. acetate fibers
There is 0.5wt% titanium dioxide, after reducing atmosphere high-temperature calcination, titanium dioxide can be enriched with the specific limits, and be given birth to
Long, the acetate fiber most crossed afterwards through reducing atmosphere high-temperature process, which can become a kind of surface, has small titanium dioxide branch fork
Carbon fiber, although these titanium dioxide branch fork is shorter for the diameter of carbon fiber, it also increases carbon fiber
Surface area, add the binding ability between carbon fiber and refractory material powder.Hollow acetate fiber is passing through reproducibility gas
After atmosphere high-temperature process, a kind of carbon fiber pipe with hollow pipeline structure can be formed accordingly, its inwall and outer surface also can phases
The generation titanium dioxide branch fork answered, improves the specific surface area of hollow carbon fiber, and it is resistance to other also greatly to increase hollow carbon fiber
Binding ability between fiery material powder, in refractory material sintering process, the sintering difficulty of refractory material can be reduced, simultaneously
As a kind of fiber, there is corresponding toughness reinforcing to think, can also increase the fracture toughness of refractory material.
If using the present invention powder used after processing as unshape refractory, due to acetate fiber itself have it is good
Good tensile property, it can also play the fracture toughness for strengthening corresponding refractory material of the unshape refractory through being prepared.
It is 10~20 microns from length, the shorter acetate fiber of length, refractory material powder can be preferably combined
Together, draw ratio can be being generated after pyroreaction small carbon fiber, generation with the hollow of titanium dioxide branch fork
Carbon fiber pipe, it is evenly distributed in refractory material, refractory material can be closely linked together, is used in refractory material
During it is cracked, can also block the propagation of crackle in time, ensure that refractory material will not be broken.
Preferably, the particle diameter of magnesia and calcium oxide is 4000~5000 mesh.
Preferably, binding agent is 5wt% polyvinylpyrrolidones ethanol solution or 5wt% Kynoar N- methylpyrroles
Alkanone solution.
Kynoar 1-METHYLPYRROLIDONE solution refers to that Kynoar is dissolved in what is obtained in 1-METHYLPYRROLIDONE
Solution, polyvinylpyrrolidone ethanol solution refer to for polyvinylpyrrolidone to be dissolved in the solution obtained in ethanol.
In the prior art, binding agent typically uses polyvinyl alcohol（PVA）The aqueous solution, but polyvinyl alcohol be one kind intolerant to height
The organic high molecular compound of temperature, its fusing point is relatively low, and decomposition temperature is relatively low, is added to as binding agent in powder, is sintering
Stage needs to carry out dumping processing at a lower temperature, at a lower temperature dumping, after easily causing binding agent decomposition
Holdup time process of the product in powder, or even long period lasting impact is produced to powder, cause obtained fire proofed wood
Expect the decline of mechanical property；Kynoar is a kind of organic high molecular compound with high-temperature stability, compared to poly- second
Enol, it has relatively higher fusing point, relatively higher decomposition temperature, therefore the temperature of powder dumping can also rise accordingly
Height, after dump temperature rise, catabolite also can be discharged quickly from powder, reduce the time for being detained powder, be reduced to system
Obtain the influence of refractory material mechanical property.
Therefore, the invention has the advantages that：
（1）Reasonable raw material proportioning in the present invention, can realize that there is higher fire resistance, at the same also can be appropriate reduction into
This；
（2）Fiber reinforced refractory material powder in the present invention can be used as unsetting resistance to after aluminosilicate cement is properly added
Fiery materials'use；
（3）The refractory material being prepared, which can be made, in fiber reinforced refractory material powder in the present invention has higher fracture tough
Property, there is the performance that more preferable resistance to mechanical is impacted.
Embodiment
Technical scheme is further described with reference to embodiment.
Obviously, described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, all other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, belongs to the scope of protection of the invention.
Embodiment 1
A kind of fiber reinforced refractory material powder, is mainly made by the raw material of following parts by weight：
40 parts of magnesia, 80 parts of calcium oxide, 5.5 parts of toughened fiber, 1 part of binding agent；
Wherein, the particle diameter of magnesia and calcium oxide is 4000 mesh, and toughened fiber is the hollow acetate fibre that length is 10 microns, is glued
Knot agent is 5wt% polyvinylpyrrolidone ethanol solutions；
Just fiber reinforced refractory material powder is made after above-mentioned raw materials are well mixed.
Embodiment 2
A kind of fiber reinforced refractory material powder, is mainly made by the raw material of following parts by weight：
40 parts of magnesia, 88 parts of calcium oxide, 5.7 parts of toughened fiber, 1.2 parts of binding agent；
Wherein, the particle diameter of magnesia and calcium oxide is 4000~5000 mesh, and toughened fiber is the hollow vinegar ester that length is 12 microns
Fiber, binding agent are 5wt% polyvinylpyrrolidone ethanol solutions；
Just fiber reinforced refractory material powder is made after above-mentioned raw materials are well mixed.
Embodiment 3
A kind of fiber reinforced refractory material powder, is mainly made by the raw material of following parts by weight：
40 parts of magnesia, 85 parts of calcium oxide, 6 parts of toughened fiber, 1.1 parts of binding agent；
Wherein, the particle diameter of magnesia and calcium oxide is 4500 mesh, and toughened fiber is the hollow acetate fibre that length is 15 microns, is glued
Knot agent is 5wt% Kynoar 1-METHYLPYRROLIDONE solution；
Just fiber reinforced refractory material powder is made after above-mentioned raw materials are well mixed.
Embodiment 4
A kind of fiber reinforced refractory material powder, is mainly made by the raw material of following parts by weight：
40 parts of magnesia, 83 parts of calcium oxide, 6.2 parts of toughened fiber, 1.1 parts of binding agent；
Wherein, the particle diameter of magnesia and calcium oxide is 4000~5000 mesh, and toughened fiber is the hollow vinegar ester that length is 18 microns
Fiber, binding agent are 5wt% Kynoar 1-METHYLPYRROLIDONE solution；
Just fiber reinforced refractory material powder is made after above-mentioned raw materials are well mixed.
Embodiment 5
A kind of fiber reinforced refractory material powder, is mainly made by the raw material of following parts by weight：
40 parts of magnesia, 90 parts of calcium oxide, 6.5 parts of toughened fiber, 1.3 parts of binding agent；
Wherein, the particle diameter of magnesia and calcium oxide is 5000 mesh, and toughened fiber is the hollow acetate fibre that length is 20 microns, is glued
Knot agent is 5wt% Kynoar 1-METHYLPYRROLIDONE solution；
Just fiber reinforced refractory material powder is made after above-mentioned raw materials are well mixed.
Measure of merit：
Fiber reinforced refractory material powder in above-described embodiment is prepared through shaping and sinter at 1800 DEG C for 8 hours resistance to
Fiery material, and correlated performance test is carried out to obtained refractory material；
The method that refractoriness test is recorded using GB/T 7322-2007 is carried out, and apparent porosity is recorded using GB/T 5071-2013
Method carry out, the method that cold crushing strength is recorded using GB/T 5072-2008 is carried out, and refractoriness under load uses GB/T
The method that 5989-2008 is recorded is carried out, and fracture toughness is tested using SENB methods well known in the art.
Test effect：
1. refractoriness >=1960 DEG C, maximum temperature in use >=1900 DEG C；
2. apparent porosity≤4%；
3. cold crushing strength >=125MPa；
4. refractoriness under load >=1920 DEG C；
5. fracture toughness >=2.0MPam1/2。
It should be appreciated that to those skilled in the art, it can according to the above description be improved or be become
Change, and all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (5)
1. a kind of fiber reinforced refractory material powder, it is characterised in that be mainly made by the raw material of following parts by weight：
40 parts of magnesia, 80~90 parts of calcium oxide, 5.5~6.5 parts of toughened fiber, 1~1.3 part of binding agent.
A kind of 2. fiber reinforced refractory material powder according to claim 1, it is characterised in that：
Described toughened fiber is hollow acetate fibre.
A kind of 3. fiber reinforced refractory material powder according to claim 1 or 2, it is characterised in that：
The length of described toughened fiber is 10~20 microns.
A kind of 4. fiber reinforced refractory material powder according to claim 1, it is characterised in that：
Described magnesia and the particle diameter of calcium oxide are 4000~5000 mesh.
A kind of 5. fiber reinforced refractory material powder according to claim 1, it is characterised in that：
Described binding agent is that 5wt% polyvinylpyrrolidones ethanol solution or 5wt% Kynoar 1-METHYLPYRROLIDONEs are molten
Liquid.
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| CN201710526852.8A CN107382336A (en) | 2017-06-30 | 2017-06-30 | A kind of fiber reinforced refractory material powder |
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| CN201710526852.8A CN107382336A (en) | 2017-06-30 | 2017-06-30 | A kind of fiber reinforced refractory material powder |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269980A (en) * | 2007-12-14 | 2008-09-24 | 内蒙古科技大学 | Generating method for crassitude carbon nano-tube and carbon nano-fibre in carbon composite refractory material |
| CN104725031A (en) * | 2015-03-16 | 2015-06-24 | 上海交通大学 | Method for growing carbon nano fibers on ceramic hollow microsphere surface in situ |
| CN105130457A (en) * | 2015-07-09 | 2015-12-09 | 长兴泓矿炉料有限公司 | Magnesium-calcium-carbon refractory material and preparation method thereof |
| CN106587937A (en) * | 2016-12-07 | 2017-04-26 | 苏州洛特兰新材料科技有限公司 | High-strength carbon fiber based composite ceramic material and preparation method thereof |
-
2017
- 2017-06-30 CN CN201710526852.8A patent/CN107382336A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269980A (en) * | 2007-12-14 | 2008-09-24 | 内蒙古科技大学 | Generating method for crassitude carbon nano-tube and carbon nano-fibre in carbon composite refractory material |
| CN104725031A (en) * | 2015-03-16 | 2015-06-24 | 上海交通大学 | Method for growing carbon nano fibers on ceramic hollow microsphere surface in situ |
| CN105130457A (en) * | 2015-07-09 | 2015-12-09 | 长兴泓矿炉料有限公司 | Magnesium-calcium-carbon refractory material and preparation method thereof |
| CN106587937A (en) * | 2016-12-07 | 2017-04-26 | 苏州洛特兰新材料科技有限公司 | High-strength carbon fiber based composite ceramic material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 吴占德等: "CaO 含量对镁钙系耐火材料性能影响", 《耐火与石灰》 * |
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Application publication date: 20171124 |