JPH07213835A - Plugging agent for waste gas filter and waste gas filter - Google Patents
Plugging agent for waste gas filter and waste gas filterInfo
- Publication number
- JPH07213835A JPH07213835A JP1153194A JP1153194A JPH07213835A JP H07213835 A JPH07213835 A JP H07213835A JP 1153194 A JP1153194 A JP 1153194A JP 1153194 A JP1153194 A JP 1153194A JP H07213835 A JPH07213835 A JP H07213835A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- gas filter
- starch
- plug
- plug agent
- 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.)
- Pending
Links
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtering Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、排ガスフィルター用プ
ラグ剤及び自動車等に搭載される排ガスフィルターに関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust gas filter plug agent and an exhaust gas filter mounted on an automobile or the like.
【０００２】[0002]
【従来の技術】図３は従来の排ガスフィルターを示す断
面図である。2. Description of the Related Art FIG. 3 is a sectional view showing a conventional exhaust gas filter.
【０００３】図３において、１はコージェライト質ハニ
カムセラミックスで構成された円筒状の本体で、本体１
には複数の貫通孔２が設けられている。３はプラグ剤
で、プラグ剤３は貫通孔２の排ガス流入端４及びガス流
出端５の一方に詰められている。この構成によって排ガ
ス流入端４から流入した排ガスは、本体１の隔壁を通っ
てガス流出端５から流出するので、排ガス中の微粒子等
は隔壁に捕らえられる事となる。In FIG. 3, reference numeral 1 denotes a cylindrical main body made of cordierite honeycomb ceramics.
Is provided with a plurality of through holes 2. 3 is a plug agent, and the plug agent 3 is packed in one of the exhaust gas inflow end 4 and the gas outflow end 5 of the through hole 2. With this configuration, the exhaust gas flowing in from the exhaust gas inflow end 4 passes through the partition wall of the main body 1 and flows out from the gas outflow end 5, so that the fine particles and the like in the exhaust gas are caught in the partition wall.
【０００４】従って、プラグ剤３の要件として下記の事
項が上げられる。 ・排ガスに対して非通気性である。Therefore, the requirements for the plug material 3 are as follows. -Impermeable to exhaust gas.
【０００５】・隔壁と緊密に接着する。 ・高温下で耐熱性が高い。• Adheres tightly to the partition wall.・ High heat resistance at high temperatures.
【０００６】・焼成温度において溶融相を形成しない。 ・耐熱衝撃性に優れている。It does not form a molten phase at the firing temperature. -Excellent thermal shock resistance.
【０００７】このような条件を満たす材料として、コー
ジェライト質粉末若しくはコージェライト質粉末と他の
セラミック質粉末の混合粉末を可塑化して作製したもの
が考えられる。As a material satisfying such a condition, it is possible to consider one produced by plasticizing cordierite powder or a mixed powder of cordierite powder and other ceramic powder.
【０００８】押し出し成形後乾燥したハニカムセラミッ
クスの貫通孔の端面の一部にこのプラグ剤を充填し、さ
らに乾燥した後焼成して排ガスフィルターを製造してい
た。例えば、特開昭５７−１８７０１３号公報には「コ
ージェライトを主成分とする平均孔径１０〜２００μｍ
の微細孔を有する多孔質ハニカム状体であって、かつハ
ニカムを構成する貫通孔各々のいずれか一方の端部を開
口端と閉止端とが互いに隣接するように非通気性の物質
により閉鎖した事を特徴とする排出ガスフィルタ」が開
示されている。An exhaust gas filter was manufactured by filling the plug material in a part of the end surface of the through hole of the honeycomb ceramic which was dried after extrusion molding, and further dried and fired. For example, Japanese Patent Application Laid-Open No. 57-187013 discloses that "a cordierite as a main component has an average pore diameter of 10 to 200 [mu] m.
Which is a porous honeycomb-shaped body having fine pores, and one end of each of the through-holes constituting the honeycomb is closed with a non-air-permeable substance so that the open end and the closed end are adjacent to each other. An exhaust gas filter characterized by the above is disclosed.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、前記従
来の構成では、プラグ剤３は多量の水を用いて可塑化し
ているために、排ガスフィルターに高熱が加わる事によ
ってプラグ剤３が急激に収縮して、乾燥中のプラグ剤３
に亀裂が入ったり、焼成中のプラグ剤３に亀裂が入った
り、プラグ剤３と隔壁の間に間隙を生じてプラグ剤３が
脱落したり、プラグ剤３付近の隔壁に亀裂を生じたりし
たため、排ガスフィルターが排ガス中の微粒子を完全に
捕集できないという問題点があった。さらに、焼成後緻
密化するため加工が困難になり、また重量が重いという
問題点があった。However, in the above-mentioned conventional structure, since the plug agent 3 is plasticized by using a large amount of water, the plug agent 3 rapidly contracts when high heat is applied to the exhaust gas filter. And dry the plug agent 3
Because the plug agent 3 is cracked, the plug agent 3 is cracked during firing, a gap is formed between the plug agent 3 and the partition wall, and the plug agent 3 falls off, or a partition wall near the plug agent 3 is cracked. However, there is a problem that the exhaust gas filter cannot completely collect the fine particles in the exhaust gas. Further, there is a problem that processing becomes difficult and the weight is heavy because the material is densified after firing.
【００１０】本発明は前記従来の課題を解決するもの
で、排ガス中の微粒子を完全に捕集し、かつ亀裂が入っ
たり脱落したりする事がなく、加工が容易でしかも軽量
で、耐熱衝撃性に優れた排ガスフィルター用プラグ剤及
び排ガスフィルターを提供する事を目的としている。The present invention solves the above-mentioned problems of the prior art. It completely collects fine particles in exhaust gas, does not crack or drop them, is easy to process, is lightweight, and has a thermal shock resistance. It is an object of the present invention to provide an exhaust gas filter plug agent and an exhaust gas filter having excellent properties.
【００１１】[0011]
【課題を解決するための手段】この目的を達成するため
に本発明の排ガスフィルター用プラグ剤はセラミック材
と無機質ファイバーと澱粉と高分子増粘材若しくはセラ
ミック材と澱粉と高分子増粘材で構成しており、さらに
セラミック材がコージェライト質粉末とセリサイト含有
粘土系粉末とカオリナイト含有粘土系粉末の少なくとも
一方である構成を有しており、さらに澱粉が馬鈴薯澱粉
ととうもろこし澱粉の少なくとも一方である構成を有し
ている。To achieve this object, the exhaust gas filter plug agent of the present invention comprises a ceramic material, an inorganic fiber, a starch and a polymer thickener or a ceramic material, a starch and a polymer thickener. In addition, the ceramic material has a structure in which at least one of a cordierite powder, a sericite-containing clay-based powder, and a kaolinite-containing clay-based powder is further included, and the starch is at least one of potato starch and corn starch. Has a configuration that is
【００１２】ここで、コージェライト質粉末としては、
カオリン，タルク，水酸化アルミニウムの混合物または
これらの混合物の仮焼物を用いる事ができる。カオリン
とタルク，水酸化アルミニウムの混合比（重量比）はカ
オリン：タルク：水酸化アルミニウム＝１００：２３〜
３８：１５〜３１が用いられ、タルクは２３ｗｔ部未満
若しくは３８ｗｔ部を越えると焼成温度範囲が狭くなる
傾向があり好ましくない。水酸化アルミニウムは１５ｗ
ｔ部未満若しくは３１ｗｔ部を越えると熱膨張係数が大
きくなる傾向が認められるので好ましくない。Here, as the cordierite powder,
It is possible to use a mixture of kaolin, talc, aluminum hydroxide or a calcined product of these mixtures. The mixing ratio (weight ratio) of kaolin to talc and aluminum hydroxide is kaolin: talc: aluminum hydroxide = 100: 23-
38: 15-31 is used, and if talc is less than 23 parts by weight or exceeds 38 parts by weight, the firing temperature range tends to be narrowed, which is not preferable. Aluminum hydroxide is 15w
If it is less than t part or exceeds 31 wt part, the thermal expansion coefficient tends to increase, which is not preferable.
【００１３】プラグ剤がセラミック材と無機質ファイバ
ーと澱粉と高分子増粘材で構成される場合は、セラミッ
ク材として用いられるコージェライト質粉末若しくはセ
リサイト含有粘土系粉末若しくはカオリナイト含有粘土
系粉末は、５．０ｗｔ部〜４０．０ｗｔ部、好ましくは
７．５ｗｔ部〜３０．０ｗｔ部が用いられる。７．５ｗ
ｔ部未満ではプラグ剤の熱膨張係数が大きくなり機械的
強度が小さくなるため耐熱衝撃性が劣化しプラグ剤に亀
裂を生じる傾向が認められ、３０．０ｗｔ部を越えるに
つれプラグ剤に亀裂が入ったり、プラグ剤と隔壁の間に
間隙を生じてプラグ剤が脱落したり、プラグ剤付近の隔
壁に亀裂を生じたりする傾向が認められるのでいずれも
好ましくない。When the plug agent is composed of a ceramic material, an inorganic fiber, starch and a polymer thickener, the cordierite powder, the sericite-containing clay-based powder or the kaolinite-containing clay-based powder used as the ceramic material is , 5.0 wt parts to 40.0 wt parts, and preferably 7.5 wt parts to 30.0 wt parts are used. 7.5w
If it is less than t part, the thermal expansion coefficient of the plug material becomes large and the mechanical strength becomes small, so that the thermal shock resistance deteriorates and the plug material tends to crack, and if it exceeds 30.0 wt parts, the plug material cracks. Or, there is a tendency that a gap is formed between the plug agent and the partition wall, the plug agent falls off, and a partition wall near the plug agent tends to crack, which is not preferable.
【００１４】無機質ファイバーとしては、Ａｌ2 Ｏ3 −
ＳｉＯ2 系のものが用いられ、５０．０ｗｔ部〜８５．
０ｗｔ部、好ましくは５７．５ｗｔ部〜８０．０ｗｔ部
が用いられる。５７．５ｗｔ部未満ではプラグ剤が緻密
化し重量が重くなり、加工が困難になる傾向が認めら
れ、８０．０ｗｔ部を越えるにつれプラグ剤の熱膨張係
数が大きくなり機械的強度が小さくなるため耐熱衝撃性
が劣化しプラグ剤に亀裂を生じる傾向が認められるので
いずれも好ましくない。また、無機質ファイバーは適度
に粉砕したものを用いても良い。As the inorganic fiber, Al 2 O 3
SiO 2 type is used, and 50.0 parts by weight to 85.
0 wt parts, preferably 57.5 wt parts to 80.0 wt parts are used. If it is less than 57.5 parts by weight, the plug material becomes dense and the weight becomes heavy, and it tends to be difficult to process. If it exceeds 80.0 parts by weight, the thermal expansion coefficient of the plug material becomes large and the mechanical strength becomes small, so that heat resistance Both are not preferable because impact resistance deteriorates and a tendency of cracking the plug material is observed. In addition, the inorganic fibers may be appropriately crushed.
【００１５】澱粉として用いられる馬鈴薯澱粉若しくは
とうもろこし澱粉は、１０．０ｗｔ部〜４５．０ｗｔ
部、好ましくは１２．５ｗｔ部〜３５．０ｗｔ部が用い
られる。１２．５ｗｔ部未満ではプラグ剤に亀裂が入っ
たり、プラグ剤と隔壁の間に間隙を生じてプラグ剤が脱
落したり、プラグ剤が緻密化し重量が重くなり、加工が
困難になる傾向が認められ、３５．０ｗｔ部を越えるに
つれプラグ剤の急激な収縮により亀裂が発生する傾向が
認められるのでいずれも好ましくない。The potato starch or corn starch used as starch is 10.0 parts by weight to 45.0 parts by weight.
Parts, preferably 12.5 wt parts to 35.0 wt parts are used. If it is less than 12.5 parts by weight, cracks may occur in the plug agent, a gap may be created between the plug agent and the partition wall, and the plug agent may fall off, or the plug agent may become dense and heavy, making processing difficult. However, as the amount exceeds 35.0 parts by weight, cracking tends to occur due to rapid shrinkage of the plug agent, which is not preferable.
【００１６】高分子増粘材としては、有機系のものが用
いられる。添加量としてはセラミック材と無機質ファイ
バーと澱粉の１００ｗｔ部に対して０．２ｗｔ部〜１．
０ｗｔ部が用いられる。An organic material is used as the polymer thickener. The addition amount is 0.2 parts by weight to 100 parts by weight of the ceramic material, the inorganic fiber and the starch.
0 wt part is used.
【００１７】また、プラグ剤がセラミック材と澱粉と高
分子増粘材で構成される場合は、セラミック材として用
いられるコージェライト質粉末若しくはセリサイト含有
粘土系粉末若しくはカオリナイト含有粘土系粉末は、６
５．０ｗｔ部〜９３．０ｗｔ部、好ましくは７５．５ｗ
ｔ部〜８８．５ｗｔ部が用いられる。７５．５ｗｔ部未
満ではプラグ剤の熱膨張係数が大きくなり機械的強度が
小さくなるため耐熱衝撃性が劣化しプラグ剤に亀裂を生
じる傾向が認められ、８８．５ｗｔ部を越えるにつれプ
ラグ剤に亀裂が入ったり、プラグ剤と隔壁の間に間隙を
生じてプラグ剤が脱落したり、プラグ剤付近の隔壁に亀
裂を生じたりする傾向が認められるのでいずれも好まし
くない。When the plug agent is composed of a ceramic material, starch and a polymer thickening material, the cordierite powder, the sericite-containing clay-based powder or the kaolinite-containing clay-based powder used as the ceramic material is 6
5.0 wt parts-93.0 wt parts, preferably 75.5 w
The t part to 88.5 wt parts are used. If the amount is less than 75.5 parts by weight, the thermal expansion coefficient of the plug material becomes large and the mechanical strength becomes small, so that the thermal shock resistance deteriorates and the plug material tends to crack, and if it exceeds 88.5 parts by weight, the plug material cracks. This is not preferable either because of the tendency that a plug is introduced, a gap is formed between the plug agent and the partition wall, the plug agent falls off, or a partition wall near the plug agent is cracked.
【００１８】澱粉として用いられる馬鈴薯澱粉若しくは
とうもろこし澱粉は、７．０ｗｔ部〜３５．０ｗｔ部、
好ましくは１１．５ｗｔ部〜２４．５ｗｔ部が用いられ
る。１１．５ｗｔ部未満ではプラグ剤に亀裂が入った
り、プラグ剤と隔壁の間に間隙を生じたり、プラグ剤が
緻密化し重量が重くなり、加工が困難になる傾向が認め
られ、２４．５ｗｔ部を越えるにつれプラグ剤の急激な
収縮により亀裂が発生する傾向が認められるのでいずれ
も好ましくない。The potato starch or corn starch used as starch is 7.0 to 35.0 parts by weight,
Preferably, 11.5 wt parts to 24.5 wt parts are used. If it is less than 11.5 parts by weight, cracks may occur in the plug material, a gap may be created between the plug material and the partition wall, the plug material may become dense and heavy, and processing tends to be difficult. Since the tendency is that cracks tend to occur due to the rapid shrinkage of the plug agent as it exceeds the range, neither is preferable.
【００１９】高分子増粘材としては、有機系のものが用
いられる。添加量としてはセラミック材と澱粉の１００
ｗｔ部に対して０．２ｗｔ部〜１．０ｗｔ部が用いられ
る。An organic material is used as the polymer thickener. The addition amount is 100 of ceramic material and starch.
0.2 wt part-1.0 wt part is used with respect to wt part.
【００２０】[0020]
【作用】この構成によって、プラグ剤にセラミック材と
無機質ファイバーと澱粉と高分子増粘材若しくはセラミ
ック材と澱粉と高分子増粘材を使用したので乾燥、焼成
中の急激な収縮を抑える事ができ、プラグ剤に亀裂が入
ったり、脱落したり、プラグ剤付近の隔壁に亀裂が入っ
たりするのを防ぐ事ができ、排ガスフィルターとして排
ガス中の微粒子を完全に捕集できる。さらに、澱粉若し
くは無機質ファイバーを使用しているため焼成後のプラ
グ剤の緻密化を抑える事ができ、加工が容易でしかも軽
量になる。また、セラミック材としてコージェライト質
粉末若しくはセリサイト含有粘土系粉末若しくはカオリ
ナイト含有粘土系粉末を使用したので、プラグ剤の熱膨
張係数を小さくする事ができ耐熱衝撃性を向上させる事
ができる。With this structure, since the ceramic material, the inorganic fiber, the starch and the polymer thickening material or the ceramic material, the starch and the polymer thickening material are used as the plug material, it is possible to suppress the rapid shrinkage during drying and firing. Therefore, it is possible to prevent the plug agent from cracking, falling off, and cracks in the partition walls near the plug agent, and to completely collect fine particles in the exhaust gas as an exhaust gas filter. Furthermore, since starch or inorganic fibers are used, it is possible to suppress the densification of the plug agent after firing, which facilitates the processing and also makes the weight lightweight. Further, since the cordierite powder, the sericite-containing clay-based powder, or the kaolinite-containing clay-based powder is used as the ceramic material, the thermal expansion coefficient of the plug material can be reduced and the thermal shock resistance can be improved.
【００２１】[0021]
【実施例】以下本発明の一実施例における排ガスフィル
ター用プラグ剤及び排ガスフィルターについて説明す
る。EXAMPLE An exhaust gas filter plug agent and an exhaust gas filter according to one example of the present invention will be described below.
【００２２】（実施例１）図１は本発明の一実施例にお
ける排ガスフィルターを示す断面図である。図１におい
て、１１は多数の貫通孔１２を有した本体、１３は貫通
孔１２の排ガス流入端１４側またはガス流出端１５側の
一方に詰められるプラグ剤である。(Embodiment 1) FIG. 1 is a sectional view showing an exhaust gas filter according to an embodiment of the present invention. In FIG. 1, 11 is a main body having a large number of through holes 12, and 13 is a plug agent packed in either the exhaust gas inflow end 14 side or the gas outflow end 15 side of the through holes 12.
【００２３】以上のような構成によって、図１に示すよ
うに排ガス流入端１４から流入した排ガスは、本体１１
の隔壁１１ａを通過してガス流出端１５から排出され
る。この排出されたガスは、隔壁１１ａを通過する際
に、排ガス中の微粒子等が除去される。With the above structure, the exhaust gas flowing in from the exhaust gas inflow end 14 as shown in FIG.
And is discharged from the gas outflow end 15. When the discharged gas passes through the partition wall 11a, fine particles and the like in the exhaust gas are removed.
【００２４】プラグ剤１３としては、例えばセリサイト
含有粘土系粉末と無機質ファイバーと馬鈴薯澱粉と高分
子増粘材を（表１）に示したような比率に配合し、水を
９００ｃｃ加え攪拌機を用いて回転数６０００ｒｐｍで
３０分間高速攪拌したものが用いられる。ここで、セリ
サイト含有粘土系粉末の替わりにカオリン，タルク，水
酸化アルミニウムの混合物より成るコージェライト質粉
末を用いても良い。また、馬鈴薯澱粉の替わりにとうも
ろこし澱粉を用いても良い。また、無機質ファイバーは
適度に粉砕したものを用いても良い。As the plug agent 13, for example, a clay-based powder containing sericite, an inorganic fiber, potato starch and a polymer thickener are mixed in a ratio as shown in (Table 1), 900 cc of water is added and a stirrer is used. Then, a high speed stirring for 30 minutes at a rotation speed of 6000 rpm is used. Here, instead of the clay-based powder containing sericite, a cordierite powder composed of a mixture of kaolin, talc and aluminum hydroxide may be used. In addition, corn starch may be used instead of potato starch. In addition, the inorganic fibers may be appropriately crushed.
【００２５】[0025]
【表１】 [Table 1]
【００２６】また、本体１１は例えば以下のように形成
される。抄造法により作製したセリサイト含有粘土質セ
ラミックシートをコルゲート機によりコルゲート状に加
工しながらプラグ剤１３をセラミックシートの両端部に
充填し円筒状に巻き上げて直径１９ｃｍ，長さ２０ｃｍ
の成形体を作製した。このとき、セラミックシート間の
機械的強度を向上させるために、セラミックシートの所
定の部分に接着剤を塗布し、セラミックシート間を接合
した。次に、この成形体を１００℃で乾燥した後電気炉
にセットし１５００℃で焼成し、加工し、本体１１を作
製した。The main body 11 is formed as follows, for example. While the sericite-containing clay-based ceramic sheet produced by the papermaking method is processed into a corrugated shape by a corrugating machine, both ends of the ceramic sheet are filled with the plug agent 13 and rolled up into a cylindrical shape to have a diameter of 19 cm and a length of 20 cm.
A molded body of was produced. At this time, in order to improve the mechanical strength between the ceramic sheets, an adhesive was applied to predetermined portions of the ceramic sheets to bond the ceramic sheets. Next, this molded body was dried at 100 ° C., set in an electric furnace, fired at 1500 ° C., and processed to prepare a main body 11.
【００２７】以上のような構成によって、乾燥、焼成中
にプラグ剤１３に亀裂が入ったり、脱落したりする事は
なく、さらにプラグ剤１３付近の隔壁１１ａに亀裂が入
る事もなかった。また、焼成後の加工は非常に容易であ
り、嵩比重は前記従来の排ガスフィルターの５０％以下
と極めて軽量であった。With the above-described structure, the plug agent 13 was not cracked or dropped during drying and firing, and the partition wall 11a near the plug agent 13 was not cracked. Further, the processing after firing was extremely easy, and the bulk specific gravity was 50% or less of the conventional exhaust gas filter, which was extremely lightweight.
【００２８】次に、このようにして得られた排ガスフィ
ルターの燃焼試験をディーゼルエンジンの排ガスを一定
時間フィルターの入口側の所定の貫通孔より流入して１
５ｇの微粒子を捕集し電気ヒータにて燃焼する捕集燃焼
を繰り返す事により実施した。捕集時にフィルターの出
口側にスモークメータを設置し、微粒子の捕集もれを測
定するが、目安としてスモークメータの値が０．５％を
越えると微粒子の捕集もれが発生する。Next, in the combustion test of the thus obtained exhaust gas filter, the exhaust gas of a diesel engine was introduced for a certain period of time through a predetermined through hole on the inlet side of the filter to
It was carried out by repeating the collection and combustion in which 5 g of fine particles were collected and burned by an electric heater. At the time of collection, a smoke meter is installed on the outlet side of the filter to measure the collection leakage of fine particles. As a guide, if the value of the smoke meter exceeds 0.5%, the collection leakage of fine particles occurs.
【００２９】（表２）に本実施例の排ガスフィルターと
従来の排ガスフィルターの燃焼試験の繰り返し回数とス
モークメータの値を示したが、本実施例の排ガスフィル
ターは捕集燃焼を３００回繰り返してもスモークメータ
の値は０．５％を越える事はなく排ガス中の微粒子は完
全に捕集された。一方、従来の排ガスフィルターは捕集
燃焼を１２０回繰り返したところでプラグ剤に亀裂が発
生し、微粒子の捕集もれのためスモークメータの値が
２．８％に増加した。Table 2 shows the number of repetitions of the combustion test of the exhaust gas filter of this embodiment and the conventional exhaust gas filter and the value of the smoke meter. The exhaust gas filter of this embodiment repeats trapping and combustion 300 times. However, the smoke meter value did not exceed 0.5%, and the fine particles in the exhaust gas were completely collected. On the other hand, in the conventional exhaust gas filter, cracks were generated in the plug material after the collection and combustion were repeated 120 times, and the smoke meter value increased to 2.8% due to the leakage of the fine particles.
【００３０】[0030]
【表２】 [Table 2]
【００３１】以上の事から明らかなように本実施例によ
れば、乾燥、焼成中の急激な収縮により亀裂が発生した
り脱落したりする事がなく、加工性が容易で、排ガス中
の微粒子を完全に捕集する優れた排ガスフィルター用の
プラグ剤１３及び排ガスフィルターが得られる事が明ら
かになった。As is clear from the above, according to this embodiment, cracks do not occur or fall off due to abrupt shrinkage during drying and firing, workability is easy, and fine particles in exhaust gas are used. It has been clarified that an excellent plug agent 13 for exhaust gas filters and an exhaust gas filter that completely collects the exhaust gas can be obtained.
【００３２】（実施例２）カオリン，タルク，水酸化ア
ルミニウムの混合物の仮焼物より成るコージェライト質
粉末と馬鈴薯澱粉と高分子増粘剤を（表３）に示したよ
うな比率に配合し、水を６７０ｃｃ加え攪拌機を用いて
回転数５０００ｒｐｍで３０分間高速攪拌しプラグ剤を
作製した。ここで、カオリン，タルク，水酸化アルミニ
ウムの混合物の仮焼物より成るコージェライト質粉末の
替わりにカオリン，タルク，水酸化アルミニウムの混合
物より成るコージェライト質粉末若しくはセリサイト含
有粘土系粉末若しくはカオリナイト含有粘土系粉末を用
いても良い。また、馬鈴薯澱粉の替わりにとうもろこし
澱粉を用いても良い。(Example 2) Cordierite powder consisting of a calcined product of a mixture of kaolin, talc and aluminum hydroxide, potato starch and a polymer thickener were blended in the proportions shown in (Table 3), 670 cc of water was added, and the mixture was stirred at high speed for 30 minutes at a rotation speed of 5000 rpm using a stirrer to prepare a plug agent. Here, instead of the cordierite powder consisting of a calcined mixture of kaolin, talc and aluminum hydroxide, a cordierite powder consisting of a mixture of kaolin, talc and aluminum hydroxide, a clay-based powder containing sericite, or a kaolinite containing powder. Clay-based powder may be used. In addition, corn starch may be used instead of potato starch.
【００３３】[0033]
【表３】 [Table 3]
【００３４】次に、抄造法により作製したコージェライ
ト質セラミックシートを１６０ｍｍ×２００ｍｍの矩形
状に加工した後、積層し１６０×２００×２２０ｍｍの
角柱状の成形体を作製した。このとき、セラミックシー
ト間の機械的強度を向上させるために、セラミックシー
トの所定の場所に接着剤を塗布し、セラミックシート間
を互いに接合した。成形体の積層数は５８層とした。次
に、この成形体を１００℃で乾燥した後電気炉にセット
し１４４０℃で焼成し、円柱状に加工し、図２に示す排
ガスフィルター２０を作製した。Next, the cordierite-based ceramic sheet produced by the paper-making method was processed into a rectangular shape of 160 mm × 200 mm and then laminated to form a prismatic shaped body of 160 × 200 × 220 mm. At this time, in order to improve the mechanical strength between the ceramic sheets, an adhesive was applied to predetermined places of the ceramic sheets to bond the ceramic sheets to each other. The number of laminated layers of the molded body was 58 layers. Next, this molded body was dried at 100 ° C., set in an electric furnace, fired at 1440 ° C., and processed into a columnar shape to manufacture an exhaust gas filter 20 shown in FIG.
【００３５】本実施例の排ガスフィルター用プラグ剤
も、（実施例１）と同様に乾燥、焼成中の急激な収縮が
なく、亀裂が入ったり、脱落したり、プラグ剤付近の隔
壁に亀裂が入ったりする事がなく、排ガス中の微粒子を
完全に捕集する優れた排ガスフィルターを実現する事が
わかった。さらに、セラミック材としてコージェライト
質粉末を使用したので、プラグ剤の室温から８００℃ま
での熱膨張係数が１．７×１０-6／℃以下と小さく耐熱
衝撃性に優れているため熱応力による亀裂の発生もなか
った。また、馬鈴薯澱粉を使用した事によりプラグ剤の
緻密化を抑える事ができたので加工が容易でしかも軽量
になった。As in the case of (Example 1), the plug agent for exhaust gas filter of this example also has no rapid shrinkage during drying and firing, and cracks or drops off, and cracks in partition walls near the plug agent. It has been found that an excellent exhaust gas filter that completely collects fine particles in exhaust gas can be realized without entering. Furthermore, since cordierite powder is used as the ceramic material, the thermal expansion coefficient of the plug material from room temperature to 800 ° C. is 1.7 × 10 −6 / ° C. or less, which is excellent in thermal shock resistance, and therefore due to thermal stress There were no cracks. In addition, since potato starch was used, it was possible to suppress the densification of the plug agent, so processing was easy and the weight was light.
【００３６】[0036]
【発明の効果】以上のように本発明の排ガスフィルター
用プラグ剤は、コージェライト質粉末若しくはセリサイ
ト含有粘土系粉末と無機質ファイバーと馬鈴薯澱粉若し
くはとうもろこし澱粉と高分子増粘剤を用いた事、また
はコージェライト質粉末若しくはセリサイト含有粘土系
粉末と馬鈴薯澱粉若しくはとうもろこし澱粉と高分子増
粘剤を用いた事によって、乾燥、焼成中の急激な収縮に
よりプラグ剤に亀裂が入ったり、プラグ剤と隔壁の間に
間隙を生じてプラグ剤が脱落したり、プラグ剤付近の隔
壁に亀裂が入ったりする事がなく、排ガス中の微粒子を
完全に捕集する優れた排ガスフィルターを実現できる。
また、本発明の排ガスフィルター用プラグ剤は、澱粉若
しくは無機質ファイバーの微粉砕品を使用しているた
め、加工が容易で軽量であり、さらに、セラミック材と
してコージェライト質粉末若しくはセリサイト含有粘土
系粉末若しくはカオリナイト含有粘土系粉末を使用した
ので、熱膨張係数が小さく耐熱衝撃性に優れたものであ
る。As described above, the plug agent for exhaust gas filter of the present invention uses cordierite powder or sericite-containing clay-based powder, inorganic fiber, potato starch or corn starch and polymer thickener, or By using cordierite powder or sericite-containing clay-based powder, potato starch or corn starch and a polymer thickener, the plug agent may crack due to a rapid shrinkage during drying and firing, or the plug agent and partition wall It is possible to realize an excellent exhaust gas filter that completely collects fine particles in exhaust gas without forming a gap between them and dropping the plug agent or cracking the partition wall near the plug agent.
Further, since the exhaust gas filter plug agent of the present invention uses a finely pulverized product of starch or inorganic fiber, it is easy to process and lightweight, and further, as a ceramic material, cordierite powder or sericite-containing clay-based clay-based material. Since the powder or the clay-based powder containing kaolinite is used, the thermal expansion coefficient is small and the thermal shock resistance is excellent.
【図１】本発明の一実施例における排ガスフィルターを
示す断面図FIG. 1 is a sectional view showing an exhaust gas filter according to an embodiment of the present invention.
【図２】本発明の他の実施例における排ガスフィルター
を示す斜視図FIG. 2 is a perspective view showing an exhaust gas filter according to another embodiment of the present invention.
【図３】従来の排ガスフィルターを示す断面図FIG. 3 is a sectional view showing a conventional exhaust gas filter.
１１ 本体 １１ａ 隔壁 １２ 貫通孔 １３ プラグ剤 １４ 排ガス流入端 １５ 排ガス流出端 ２０ 排ガスフィルター 11 Main body 11a Partition wall 12 Through hole 13 Plug agent 14 Exhaust gas inflow end 15 Exhaust gas outflow end 20 Exhaust gas filter
Claims (16)
ガスフィルター用プラグ剤であって、無機物と澱粉を含
む事を特徴とする排ガスフィルター用プラグ剤。1. A plug agent for an exhaust gas filter, which is filled in a through hole of the exhaust gas filter and contains an inorganic substance and starch.
ァイバーの少なくとも一方を用いた事を特徴とする請求
項１記載の排ガスフィルター用プラグ剤。2. The plug agent for an exhaust gas filter according to claim 1, wherein at least one of a ceramic material and an inorganic fiber is used as the inorganic material.
及びセリサイト含有粘土系粉末及びカオリナイト含有粘
土系粉末の少なくとも一方を用いた事を特徴とする請求
項２記載の排ガスフィルター用プラグ剤。3. The plug agent for an exhaust gas filter according to claim 2, wherein at least one of cordierite powder, sericite-containing clay-based powder and kaolinite-containing clay-based powder is used as the ceramic material.
なくとも一方で構成した事を特徴とする請求項１記載の
排ガスフィルター用プラグ剤。4. The plug agent for an exhaust gas filter according to claim 1, wherein the starch is composed of at least one of potato starch and corn starch.
ガスフィルター用プラグ剤であって、無機物と澱粉と高
分子増粘材とを含む事を特徴とする排ガスフィルター用
プラグ剤。5. A plug agent for an exhaust gas filter, which is filled in a through hole of the exhaust gas filter, and which contains an inorganic substance, starch, and a polymer thickener, and the plug agent for an exhaust gas filter.
ァイバーの少なくとも一方を用いた事を特徴とする請求
項５記載の排ガスフィルター用プラグ剤。6. The plug agent for an exhaust gas filter according to claim 5, wherein at least one of a ceramic material and an inorganic fiber is used as the inorganic material.
及びセリサイト含有粘土系粉末及びカオリナイト含有粘
土系粉末の少なくとも一方を用いた事を特徴とする請求
項６記載の排ガスフィルター用プラグ剤。7. The plug agent for an exhaust gas filter according to claim 6, wherein at least one of cordierite powder, sericite-containing clay-based powder and kaolinite-containing clay-based powder is used as the ceramic material.
なくとも一方で構成した事を特徴とする請求項５記載の
排ガスフィルター用プラグ剤。8. The plug agent for an exhaust gas filter according to claim 5, wherein the starch is composed of at least one of potato starch and corn starch.
孔の一方の端部を塞ぐように設けられたプラグ剤とを備
え、前記プラグ剤が無機物と澱粉を含む事を特徴とする
排ガスフィルター。9. A main body having a plurality of through holes, and a plug agent provided so as to close one end of each of the through holes, wherein the plug agent contains an inorganic substance and starch. Exhaust gas filter.
ファイバーの少なくとも一方を用いた事を特徴とする請
求項９記載の排ガスフィルター。10. The exhaust gas filter according to claim 9, wherein at least one of a ceramic material and an inorganic fiber is used as the inorganic substance.
末及びセリサイト含有粘土系粉末及びカオリナイト含有
粘土系粉末の少なくとも一方を用いた事を特徴とする請
求項１０記載の排ガスフィルター。11. The exhaust gas filter according to claim 10, wherein at least one of cordierite powder, sericite-containing clay-based powder and kaolinite-containing clay-based powder is used as the ceramic material.
少なくとも一方で構成した事を特徴とする請求項９記載
の排ガスフィルター。12. The exhaust gas filter according to claim 9, wherein the starch is composed of at least one of potato starch and corn starch.
通孔の一方の端部を塞ぐように設けられたプラグ剤とを
備え、前記プラグ剤が無機物と澱粉と高分子増粘材を含
む事を特徴とする排ガスフィルター。13. A main body having a plurality of through holes, and a plug agent provided so as to close one end of each of the through holes, wherein the plug agent comprises an inorganic substance, starch and a polymeric thickener. Exhaust gas filter characterized by including.
ファイバーの少なくとも一方を用いた事を特徴とする請
求項１３記載の排ガスフィルター。14. The exhaust gas filter according to claim 13, wherein at least one of a ceramic material and an inorganic fiber is used as the inorganic substance.
末及びセリサイト含有粘土系粉末及びカオリナイト含有
粘土系粉末の少なくとも一方を用いた事を特徴とする請
求項１４記載の排ガスフィルター。15. The exhaust gas filter according to claim 14, wherein at least one of cordierite powder, sericite-containing clay-based powder and kaolinite-containing clay-based powder is used as the ceramic material.
少なくとも一方で構成した事を特徴とする請求項１３記
載の排ガスフィルター。16. The exhaust gas filter according to claim 13, wherein the starch is composed of at least one of potato starch and corn starch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1153194A JPH07213835A (en) | 1994-02-03 | 1994-02-03 | Plugging agent for waste gas filter and waste gas filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1153194A JPH07213835A (en) | 1994-02-03 | 1994-02-03 | Plugging agent for waste gas filter and waste gas filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07213835A true JPH07213835A (en) | 1995-08-15 |
Family
ID=11780558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1153194A Pending JPH07213835A (en) | 1994-02-03 | 1994-02-03 | Plugging agent for waste gas filter and waste gas filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07213835A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09276654A (en) * | 1996-04-11 | 1997-10-28 | Matsushita Electric Ind Co Ltd | Exhaust gas filter and manufacture thereof |
| WO2005000445A1 (en) * | 2003-06-10 | 2005-01-06 | Ibiden Co., Ltd. | Honeycomb structure body |
| JP2006297900A (en) * | 2005-03-23 | 2006-11-02 | Ngk Insulators Ltd | Manufacturing method of sealed honeycomb structure |
| CN100368054C (en) * | 2003-06-10 | 2008-02-13 | 揖斐电株式会社 | Honeycomb structural body |
| US7455709B2 (en) | 2003-07-15 | 2008-11-25 | Ibiden Co., Ltd. | Honeycomb structural body |
| GB2475097A (en) * | 2009-11-06 | 2011-05-11 | Total Vehicle Technology Ltd | Analysing an exhaust gas using an inorganic filter |
-
1994
- 1994-02-03 JP JP1153194A patent/JPH07213835A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09276654A (en) * | 1996-04-11 | 1997-10-28 | Matsushita Electric Ind Co Ltd | Exhaust gas filter and manufacture thereof |
| WO2005000445A1 (en) * | 2003-06-10 | 2005-01-06 | Ibiden Co., Ltd. | Honeycomb structure body |
| JPWO2005000445A1 (en) * | 2003-06-10 | 2006-08-03 | イビデン株式会社 | Honeycomb structure |
| CN100368054C (en) * | 2003-06-10 | 2008-02-13 | 揖斐电株式会社 | Honeycomb structural body |
| US7521025B2 (en) | 2003-06-10 | 2009-04-21 | Ibiden Co., Ltd. | Honeycomb structural body |
| JP4509029B2 (en) * | 2003-06-10 | 2010-07-21 | イビデン株式会社 | Honeycomb structure |
| US7455709B2 (en) | 2003-07-15 | 2008-11-25 | Ibiden Co., Ltd. | Honeycomb structural body |
| JP2006297900A (en) * | 2005-03-23 | 2006-11-02 | Ngk Insulators Ltd | Manufacturing method of sealed honeycomb structure |
| GB2475097A (en) * | 2009-11-06 | 2011-05-11 | Total Vehicle Technology Ltd | Analysing an exhaust gas using an inorganic filter |
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