CN107235740A - A kind of fiber reinforced refractory material - Google Patents
A kind of fiber reinforced refractory material Download PDFInfo
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- CN107235740A CN107235740A CN201710528038.XA CN201710528038A CN107235740A CN 107235740 A CN107235740 A CN 107235740A CN 201710528038 A CN201710528038 A CN 201710528038A CN 107235740 A CN107235740 A CN 107235740A
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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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- C04B35/00—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
- C04B35/04—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 magnesium oxide
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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
- C04B2235/32—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
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- 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
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- C04B2235/52—Constituents or additives characterised by their shapes
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- C04B2235/526—Fibers characterised by the length of the fibers
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- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
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Abstract
The invention belongs to technical field of refractory materials.The invention discloses a kind of fiber reinforced refractory material, it is mainly made by the raw material of following parts by weight：40 parts of magnesia, 85~95 parts of calcium oxide, 5~7 parts of toughened fiber, 1~3 part of adhesive for granulating, 0.5~1.0 part of molding adhesive.Raw material for refractory reasonable mixture ratio in the present invention, can be realized with higher fire resistance, while also suitably can reduce cost；Fiber reinforced refractory material has higher fracture toughness in the present invention, the performance impacted with more preferable resistance to mechanical.
Description
Technical field
The present invention relates to technical field of refractory materials, more particularly, to a kind of fiber reinforced refractory material.
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, 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 the siliceous, silicon of oxidation according to mineral composition
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 common, senior and spy according to refractoriness
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 of its poor mechanical tenacity when also having had influence on its high temperature, it is anxious in chilling
Heat and the gap used are 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, reduces the service life of refractory material；Simultaneously for those need often to move it is 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, rationally realizing higher fire resistance and more excellent the invention provides a kind of material combination
The fiber reinforced refractory material minimized cost under the premise of the performances such as fracture toughness.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of fiber reinforced refractory material, is mainly made by the raw material of following parts by weight：
40 parts of magnesia, 85~95 parts of calcium oxide, 5~7 parts of toughened fiber, 1~3 part of adhesive for granulating, molding adhesive 0.5~
1.0 part.
In refractory material, dolomite series refractory material is the important refractory material of a class.Magnesia and calcium oxide are one
Certainty ratio mixes and can obtain the refractory material of dolomite matter after sintered, when magnesia and calcium oxide mol ratio are 0.25：
0.75 or so is that can generate most dolomite phases, with best fire resistance, in magnesia and 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
The reduction that the dolomite of the stabilization generated after the too high levels for changing 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 carry out according to actual needs
Corresponding adjustment, can so realize can reduce cost as far as possible, also can guarantee that refractoriness within tolerance interval.
Preferably, the particle diameter of magnesia and calcium oxide is 4000~5000 mesh.
Preferably, adhesive for granulating is 5wt% Kynoar 1-METHYLPYRROLIDONE solution.
Preferably, molding adhesive is 7wt% polyvinylpyrrolidone ethanol solution.
Kynoar 1-METHYLPYRROLIDONE solution refers to that Kynoar is dissolved in what is obtained in 1-METHYLPYRROLIDONE
Solution, polyvinylpyrrolidone ethanol solution refers to being dissolved in polyvinylpyrrolidone into 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, in sintering
Stage needs to carry out dumping processing at a lower temperature, at a lower temperature dumping, easily causes after 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, there is relatively higher fusing point, relatively higher decomposition temperature, therefore the temperature of powder dumping can also rise accordingly for it
Height, after dump temperature rise, catabolite also can be discharged quickly from powder, reduced the time for being detained powder, reduced to system
Obtain the influence of refractory material mechanical property.
Adhesive for granulating in the present invention is being entirely located in inside particle after preparation, it is difficult to realized between preferable particle
Bond, need adding molding adhesive for this, due to need to only play the cementation between particle, consumption need not be too many, adds
Plus 0.1wt% or so can be achieved intergranular cementation, and can meet will for conventional polyvinylpyrrolidonesolution solution
Ask.
Preferably, toughened fiber is hollow acetate fibre, its length is 10~20 microns.
Acetate fiber is that one kind is raw material by cellulose, and the chemistry fibre that acetyl cellulose is made is changed into method through chemistry
Dimension, with higher carbon content, results in excellent carbon fiber 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, 1.
With higher carbon content, it can generate and contain in excellent carbon fiber, 2. acetate fibers after reducing atmosphere pyroreaction
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, but it also increases carbon fiber
Surface area, adds 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 also greatly increase hollow carbon fiber is resistance to other
Binding ability between fiery material powder, in refractory material sintering process, can reduce the sintering difficulty of refractory material, simultaneously
As a kind of fiber, thought with corresponding toughness reinforcing, and can also increase the fracture toughness of refractory material.
It it is 10~20 microns from length, the shorter acetate fiber of length can preferably combine refractory material powder
Together, draw ratio can be being generated after pyroreaction small carbon fiber, generation with titanium dioxide branch pitch it is hollow
Carbon fiber pipe, is evenly distributed in refractory material, refractory material can closely link together, be used in refractory material
During there is crackle, the propagation of crackle can be also blocked in time, it is ensured that refractory material will not be broken.
Therefore, the invention has the advantages that：
（1）Raw material for refractory reasonable mixture ratio in the present invention, can be realized with higher fire resistance, while also can be appropriate
Reduce cost；
（2）Fiber reinforced refractory material has higher fracture toughness in the present invention, the property impacted with more preferable resistance to mechanical
Energy.
Embodiment
Technical scheme is further described with reference to embodiment.
Obviously, described embodiment is only a part of 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, the scope of protection of the invention is belonged to.
Embodiment 1
A kind of fiber reinforced refractory material, is mainly made by the raw material of following parts by weight：
40 parts of magnesia, 85 parts of calcium oxide, 5 parts of toughened fiber, 1 part of adhesive for granulating, 0.5 part of molding adhesive；Magnesia and
The particle diameter of calcium oxide is 4000 mesh, and adhesive for granulating is 5wt% Kynoar 1-METHYLPYRROLIDONE solution, and shaping is bonded
Agent is 7wt% polyvinylpyrrolidone ethanol solution, and toughened fiber is hollow acetate fibre, and its length is 10 microns；
8 hours obtained fiber reinforced fire proofed woods are sintered by the well mixed shaping of above-mentioned raw materials and in 1800 DEG C of reducing atmospheres
Material.
Embodiment 2
A kind of fiber reinforced refractory material, is mainly made by the raw material of following parts by weight：
40 parts of magnesia, 88 parts of calcium oxide, 6 parts of toughened fiber, 1.5 parts of adhesive for granulating, 1.0 parts of molding adhesive；Magnesia
Particle diameter with calcium oxide is 4500 mesh, and adhesive for granulating is 5wt% Kynoar 1-METHYLPYRROLIDONE solution, and shaping is viscous
The polyvinylpyrrolidone ethanol solution that agent is 7wt% is tied, toughened fiber is hollow acetate fibre, its length is 15 microns；
8 hours obtained fiber reinforced fire proofed woods are sintered by the well mixed shaping of above-mentioned raw materials and in 1800 DEG C of reducing atmospheres
Material.
Embodiment 3
A kind of fiber reinforced refractory material, is mainly made by the raw material of following parts by weight：
40 parts of magnesia, 90 parts of calcium oxide, 6 parts of toughened fiber, 2 parts of adhesive for granulating, 0.75 part of molding adhesive；Magnesia and
The particle diameter of calcium oxide is 4500 mesh, and adhesive for granulating is 5wt% Kynoar 1-METHYLPYRROLIDONE solution, and shaping is bonded
Agent is 7wt% polyvinylpyrrolidone ethanol solution, and toughened fiber is hollow acetate fibre, and its length is 15 microns；
8 hours obtained fiber reinforced fire proofed woods are sintered by the well mixed shaping of above-mentioned raw materials and in 1800 DEG C of reducing atmospheres
Material.
Embodiment 4
A kind of fiber reinforced refractory material, is mainly made by the raw material of following parts by weight：
40 parts of magnesia, 93 parts of calcium oxide, 6 parts of toughened fiber, 2.5 parts of adhesive for granulating, 0.5 part of molding adhesive；Magnesia
Particle diameter with calcium oxide is 4500 mesh, and adhesive for granulating is 5wt% Kynoar 1-METHYLPYRROLIDONE solution, and shaping is viscous
The polyvinylpyrrolidone ethanol solution that agent is 7wt% is tied, toughened fiber is hollow acetate fibre, its length is 15 microns；
8 hours obtained fiber reinforced fire proofed woods are sintered by the well mixed shaping of above-mentioned raw materials and in 1800 DEG C of reducing atmospheres
Material.
Embodiment 5
A kind of fiber reinforced refractory material, is mainly made by the raw material of following parts by weight：
40 parts of magnesia, 95 parts of calcium oxide, 7 parts of toughened fiber, 3 parts of adhesive for granulating, 1.0 parts of molding adhesive；Magnesia and
The particle diameter of calcium oxide is 5000 mesh, and adhesive for granulating is 5wt% Kynoar 1-METHYLPYRROLIDONE solution, and shaping is bonded
Agent is 7wt% polyvinylpyrrolidone ethanol solution, and toughened fiber is hollow acetate fibre, and its length is 20 microns；
8 hours obtained fiber reinforced fire proofed woods are sintered by the well mixed shaping of above-mentioned raw materials and in 1800 DEG C of reducing atmospheres
Material.
Measure of merit：
Fiber reinforced refractory material in above-described embodiment is subjected to correlated performance test；
Refractoriness test is carried out using the GB/T 7322-2007 methods recorded, and apparent porosity is recorded using GB/T 5071-2013
Method carry out, cold crushing strength is carried out using the GB/T 5072-2008 methods recorded, 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, 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, it is characterised in that be mainly made by the raw material of following parts by weight：
40 parts of magnesia, 85~95 parts of calcium oxide, 5~7 parts of toughened fiber, 1~3 part of adhesive for granulating, molding adhesive 0.5~
1.0 part.
2. a kind of fiber reinforced refractory material according to claim 1, it is characterised in that：
Described magnesia and the particle diameter of calcium oxide are 4000~5000 mesh.
3. a kind of fiber reinforced refractory material according to claim 1, it is characterised in that：
Described adhesive for granulating is 5wt% Kynoar 1-METHYLPYRROLIDONE solution.
4. it is a kind of fiber reinforced refractory material according to claim 1, it is characterised in that：
Described molding adhesive is 7wt% polyvinylpyrrolidone ethanol solution.
5. a kind of fiber reinforced refractory material according to claim 1, it is characterised in that：
Described toughened fiber is hollow acetate fibre, and its length is 10~20 microns.
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| CN201710528038.XA CN107235740A (en) | 2017-06-30 | 2017-06-30 | A kind of fiber reinforced refractory material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108675807A (en) * | 2018-06-21 | 2018-10-19 | 华北理工大学 | A kind of modified polyvinyl pyrrolidone and preparation method thereof |
| CN109987956A (en) * | 2019-04-15 | 2019-07-09 | 宋志成 | A kind of refractory material enhancing toughness |
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| CN101269980A (en) * | 2007-12-14 | 2008-09-24 | 内蒙古科技大学 | Generation method of coarse carbon nanotubes and carbon nanofibers in carbon composite refractories |
| 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 |
| CN106587938A (en) * | 2016-11-14 | 2017-04-26 | 江苏科技大学 | Spinel powder with high temperature conductivity and synthesis method and application thereof |
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2017
- 2017-06-30 CN CN201710528038.XA patent/CN107235740A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269980A (en) * | 2007-12-14 | 2008-09-24 | 内蒙古科技大学 | Generation method of coarse carbon nanotubes and carbon nanofibers in carbon composite refractories |
| 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 |
| CN106587938A (en) * | 2016-11-14 | 2017-04-26 | 江苏科技大学 | Spinel powder with high temperature conductivity and synthesis method and application 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108675807A (en) * | 2018-06-21 | 2018-10-19 | 华北理工大学 | A kind of modified polyvinyl pyrrolidone and preparation method thereof |
| CN109987956A (en) * | 2019-04-15 | 2019-07-09 | 宋志成 | A kind of refractory material enhancing toughness |
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