JPH0246547B2 - - Google Patents
Info
- Publication number
- JPH0246547B2 JPH0246547B2 JP60010159A JP1015985A JPH0246547B2 JP H0246547 B2 JPH0246547 B2 JP H0246547B2 JP 60010159 A JP60010159 A JP 60010159A JP 1015985 A JP1015985 A JP 1015985A JP H0246547 B2 JPH0246547 B2 JP H0246547B2
- Authority
- JP
- Japan
- Prior art keywords
- ceramic
- foam
- raw material
- inorganic fibers
- material powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000919 ceramic Substances 0.000 claims description 26
- 239000006260 foam Substances 0.000 claims description 20
- 239000000835 fiber Substances 0.000 claims description 14
- 239000012784 inorganic fiber Substances 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 13
- 229920000620 organic polymer Polymers 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000010304 firing Methods 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims 1
- 239000005416 organic matter Substances 0.000 claims 1
- 239000002002 slurry Substances 0.000 description 7
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 4
- 229910000323 aluminium silicate Inorganic materials 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- HEHRHMRHPUNLIR-UHFFFAOYSA-N aluminum;hydroxy-[hydroxy(oxo)silyl]oxy-oxosilane;lithium Chemical compound [Li].[Al].O[Si](=O)O[Si](O)=O.O[Si](=O)O[Si](O)=O HEHRHMRHPUNLIR-UHFFFAOYSA-N 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052670 petalite Inorganic materials 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2068—Other inorganic materials, e.g. ceramics
- B01D39/2082—Other inorganic materials, e.g. ceramics the material being filamentary or fibrous
- B01D39/2086—Other inorganic materials, e.g. ceramics the material being filamentary or fibrous sintered or bonded by inorganic agents
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明はフオーム構造を有する繊維セラミツク
多孔体の製造法に関し、フイルタ、触媒担体等の
材料の製造法として有用なものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for producing a porous fiber ceramic body having a foam structure, and is useful as a method for producing materials such as filters and catalyst carriers.
従来の技術
従来、フオーム構造のセラミツク多孔体として
はセル膜のない骨格だけのウレタンフオームをコ
ーデイエライト粉末等のセラミツク原料粉末の泥
漿に浸漬させ、フオームの骨格に付着した泥漿を
乾燥させたのち焼成して、ウレタンフオームを焼
去するとともにセラミツク原料粉末を焼結させセ
ラミツク化して製造されている。Conventional technology Conventionally, as a ceramic porous body with a foam structure, a urethane foam with only a skeleton without a cell membrane is immersed in a slurry of ceramic raw material powder such as cordierite powder, and the slurry adhering to the foam skeleton is dried. It is manufactured by firing to burn off the urethane foam and sintering the ceramic raw material powder to form a ceramic.
発明が解決しようとする問題点
セラミツク原料に、粉末を用いる場合には上記
の如く泥漿としてウレタンフオームに含浸させる
ことができるが、耐熱性の無機繊維等のような原
料を用いようとする場合、繊維により泥漿の流動
性が阻害され、また、ウレタンフオームへの浸漬
も困難であるため上記の従来の方法を適用するこ
とは不可能であつた。Problems to be Solved by the Invention When powder is used as a ceramic raw material, it can be impregnated into urethane foam as a slurry as described above, but when using raw materials such as heat-resistant inorganic fibers, The fluidity of the slurry is inhibited by the fibers, and it is also difficult to immerse the slurry into urethane foam, making it impossible to apply the above-mentioned conventional method.
本発明は、従来の泥漿を含浸させる方法とは異
なつた方法で、耐熱性の無機繊維、セラミツク原
料粉末からフオーム構造を有する繊維セラミツク
多孔体を製造しようとするものである。 The present invention aims to produce a fibrous ceramic porous body having a foam structure from heat-resistant inorganic fibers and ceramic raw material powder by a method different from the conventional method of impregnating with slurry.
問題点を解決するための手段
無機繊維、セラミツク原料粉末の凝集体を発泡
させる前の有機高分子と混合させたのちに発泡を
行なわせ、その後焼成する。Means for Solving the Problems Aggregates of inorganic fibers and ceramic raw material powder are mixed with an organic polymer before foaming, foamed, and then fired.
作 用
平均繊維長１〜10mmにチヨツプした無機繊維と
セラミツク原料粉末の懸濁液に凝集剤を加えて両
者を互いに凝集させ、得られた凝集剤を解したの
ち発泡性の有機高分子と充分に混合して発泡させ
た場合、有機高分子の発泡に伴ない、その発泡セ
ルが上記凝集剤を発泡セルの外周に押し集める働
きをする。発泡セル外周に集められた凝集体は互
いに接触し継がり合つて有機高分子発泡体のなか
に凝集体によるフオーム構造を構成する。次に、
この有機高分子発泡体を酸化雰囲気で焼成する
と、有機高分子は焼失し、他方、凝集体は互いに
焼結結合されてセラミツク化するとともにフオー
ム構造を維持して繊維セラミツク多孔体となる。
ここで無機繊維、セラミツク原料粉末を凝集させ
ずに、それぞれ単独に有機高分子に混合した混合
物から得られる繊維セラミツク多孔体は均一な組
成となり難く、強度の弱い箇所が発生するなどの
問題点を生じるため好ましくない。Action A flocculant is added to a suspension of inorganic fibers chopped to an average fiber length of 1 to 10 mm and ceramic raw material powder to cause them to coagulate with each other, and after the resulting flocculant is dissolved, it is thoroughly mixed with a foamable organic polymer. When foamed by mixing with the organic polymer, the foamed cells act to push the flocculant to the outer periphery of the foamed cells as the organic polymer foams. The aggregates collected around the outer periphery of the foamed cells come into contact with each other and are connected to form a foam structure of aggregates in the organic polymer foam. next,
When this organic polymer foam is fired in an oxidizing atmosphere, the organic polymer is burned away, while the aggregates are sintered together and turned into a ceramic, maintaining the foam structure to form a porous fiber ceramic body.
Here, the fiber ceramic porous material obtained from a mixture in which inorganic fibers and ceramic raw material powder are mixed individually with an organic polymer without agglomerating them has problems such as difficulty in achieving a uniform composition and the occurrence of weak points. This is not desirable because it occurs.
実施例
耐熱性の無機繊維にアルミノシリケート繊維を
用いた本発明の一実施例を以下に説明する。Example An example of the present invention using aluminosilicate fiber as the heat-resistant inorganic fiber will be described below.
約５mm長にチヨツプされたアルミノシリケート
繊維30重量部、セラミツク原料粉末としてセリサ
イト10重量部、ペタライト５重量部を水1500重量
部に懸濁させ、メチルメタクリレートを適量加
え、さらに澱粉0.5重量部を含む澱粉溶液を加え
て懸濁液を凝集させる。この凝集体を脱水乾燥さ
せる。この凝集体は無機繊維にセラミツク原料粉
末が凝着しており、さらにこの無機繊維どうしが
絡みあつてフロツク状態となつている。このフロ
ツク状態を適度に解して無機繊維の絡まりをなく
す。このようにして得た凝集体20重量部に、ポリ
エーテル20重量部、トリレンジイソシアネート８
重量部、水0.6重量部、安定剤、触媒を加え充分
に混合して発泡させる。得られた発泡体を電気炉
酸化雰囲気中でまず有機物を酸化焼失させ、次に
1250℃まで昇温し、２時間保持して焼結させ、セ
ラミツク化させてフオーム骨格構造の繊維セラミ
ツク多孔体を得る。 30 parts by weight of aluminosilicate fiber chopped into a length of about 5 mm, 10 parts by weight of sericite as ceramic raw material powder, and 5 parts by weight of petalite were suspended in 1500 parts by weight of water, an appropriate amount of methyl methacrylate was added, and further 0.5 parts by weight of starch was added. The suspension is flocculated by adding the containing starch solution. This aggregate is dehydrated and dried. In this aggregate, ceramic raw material powder is adhered to inorganic fibers, and the inorganic fibers are entangled with each other to form a floc. This flocculent state is appropriately broken down to eliminate entanglement of inorganic fibers. To 20 parts by weight of the aggregate thus obtained, 20 parts by weight of polyether and 8 parts by weight of tolylene diisocyanate.
Add parts by weight, 0.6 parts by weight of water, a stabilizer, and a catalyst, mix thoroughly, and foam. The obtained foam is first oxidized and burned off in an oxidizing atmosphere in an electric furnace, and then
The temperature is raised to 1250°C and held for 2 hours to sinter and turn into ceramic to obtain a fibrous ceramic porous body with a foam skeleton structure.
本実施例ではポリウレタン樹脂を用いたが、発
泡性のポリスチレンビーズを用いることも可能で
ある。この場合も、繊維を解した凝集体を発泡ポ
リスチレンビーズと混合しつつ加熱発泡させる。
次いで、前述の実施例と同様に焼成してフオーム
構造を有する繊維セラミツク多孔体を得る。これ
ら実施例では無機繊維にアルミノシリケート繊維
を用いたが、アルミナ繊維、シリカ繊維等でも同
様の方法で用いることができる。 Although polyurethane resin was used in this example, it is also possible to use foamable polystyrene beads. In this case as well, the fiber aggregate is heated and foamed while being mixed with expanded polystyrene beads.
Next, it is fired in the same manner as in the previous example to obtain a porous fiber ceramic body having a foam structure. Although aluminosilicate fibers were used as the inorganic fibers in these Examples, alumina fibers, silica fibers, etc. can also be used in the same manner.
発明の効果
本発明によれば、無機繊維を用いることができ
るため、従来の有機質発泡体に泥漿を含浸させる
方法は不可能であつたフオーム構造を有する繊維
セラミツク多孔体の製造を可能としたものであ
る。Effects of the Invention According to the present invention, since inorganic fibers can be used, it is possible to manufacture a fibrous ceramic porous body having a foam structure, which was impossible with the conventional method of impregnating an organic foam with slurry. It is.
さらに本発明では、無機繊維とセラミツク原料
粉末をあらかじめ凝集させて用いるため有機高分
子を発泡させても組成の均一なものが得られ、安
定した特性の繊維セラミツク多孔体を得ることが
できる。 Furthermore, in the present invention, since the inorganic fibers and the ceramic raw material powder are used in agglomerated form in advance, even if the organic polymer is foamed, a uniform composition can be obtained, and a fibrous ceramic porous body with stable characteristics can be obtained.
Claims (1)
原料粉末の凝集体を、発泡性有機高分子と混合
し、その混合物を発泡させた後、焼成により有機
物を焼失させ、無機繊維とセラミツク原料粉末を
焼結させてセラミツク化することを特徴とする繊
維セラミツク多孔体の製造法。1. Mix chopped aggregates of heat-resistant inorganic fibers and ceramic raw material powder with foamable organic polymer, foam the mixture, and then burn out the organic matter by firing to sinter the inorganic fibers and ceramic raw material powder. 1. A method for producing a porous fiber ceramic body, which is characterized in that the porous fiber ceramic body is made into a ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1015985A JPS61168583A (en) | 1985-01-22 | 1985-01-22 | Manufacture of fiber ceramic porous body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1015985A JPS61168583A (en) | 1985-01-22 | 1985-01-22 | Manufacture of fiber ceramic porous body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61168583A JPS61168583A (en) | 1986-07-30 |
| JPH0246547B2 true JPH0246547B2 (en) | 1990-10-16 |
Family
ID=11742498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1015985A Granted JPS61168583A (en) | 1985-01-22 | 1985-01-22 | Manufacture of fiber ceramic porous body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61168583A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59174562A (en) * | 1983-03-22 | 1984-10-03 | 東邦化学工業株式会社 | Porous ceramic body and manufacture |
-
1985
- 1985-01-22 JP JP1015985A patent/JPS61168583A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59174562A (en) * | 1983-03-22 | 1984-10-03 | 東邦化学工業株式会社 | Porous ceramic body and manufacture |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61168583A (en) | 1986-07-30 |
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