JP2016151234A - Holding material for exhaust emission control device - Google Patents

Holding material for exhaust emission control device Download PDF

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JP2016151234A
JP2016151234A JP2015029403A JP2015029403A JP2016151234A JP 2016151234 A JP2016151234 A JP 2016151234A JP 2015029403 A JP2015029403 A JP 2015029403A JP 2015029403 A JP2015029403 A JP 2015029403A JP 2016151234 A JP2016151234 A JP 2016151234A
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organic binder
exhaust gas
fitting
main body
fitting portion
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JP6421636B2 (en
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智樹 野々山
Tomoki Nonoyama
智樹 野々山
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Mitsubishi Plastics Inc
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Abstract

PROBLEM TO BE SOLVED: To provide, as its main object, holding material for exhaust emission control device showing its easy winding around an exhaust emission processing body and easy installation between the exhaust emission processing body and a casing while reducing an amount of organic binder.SOLUTION: This invention relates to holding material for exhaust emission control device comprising a main body part of which shape as seen from its top plan view is rectangular, a first fitting part arranged at one end of the main body part, a second fitting part arranged at the other end of the main body part and fitted to the first fitting part and inorganic fiber molding containing organic binder and the problem described above is solved by providing the holding material for exhaust emission control device in which an average inclusion amount of the organic binder at the first fitting part and the second fitting part is larger than an average inclusion amount of the organic binder at the main body part.SELECTED DRAWING: Figure 1

Description

本発明は、有機バインダーを含有する排ガス浄化装置用保持材に関する。   The present invention relates to a holding material for an exhaust gas purifying apparatus containing an organic binder.

セラミックファイバーに代表される無機繊維の成形体は、工業用断熱材、耐火材、パッキン材等の高温の状態に暴露される用途に用いられてきたが、近年では自動車の排ガス浄化装置用のクッション材(保持材)、すなわち、触媒担持体や粒子フィルタ等の排ガス処理体を金属製のケーシングに収容する際に、排ガス処理体に巻回され、排ガス処理体とケーシングとの間に介装される排ガス浄化装置用保持材としても用いられている。   Inorganic fiber molded bodies represented by ceramic fibers have been used for applications exposed to high temperature conditions such as industrial heat insulating materials, refractory materials, packing materials, etc., but in recent years, cushions for automobile exhaust gas purification devices. When a material (holding material), that is, an exhaust gas treatment body such as a catalyst carrier or a particle filter is accommodated in a metal casing, it is wound around the exhaust gas treatment body and interposed between the exhaust gas treatment body and the casing. It is also used as a holding material for exhaust gas purification devices.

無機繊維成形体には、組み付け作業中の繊維飛散を防止するため、有機バインダーや無機バインダーを含有させることが一般的に行われている。中でも、有機バインダーは加熱により分解除去することができるため、常温下では保持材の厚みを維持できるとともに、加熱により保持材の厚みを復元することができる。そのため、排ガス処理体とケーシングとの間へのキャニング性や、保持性等が向上することから、有機バインダーを含有する保持材が注目されている。特に、排ガス浄化装置の組み立て方法としては、排ガス処理体を保持材で巻回した状態でケーシングに圧入する方式が一般的に採用されており、この圧入方式では保持材に大きな圧入荷重が負荷されるため、キャニング性は重要である。   In general, the inorganic fiber molded body contains an organic binder or an inorganic binder in order to prevent fiber scattering during the assembly operation. In particular, since the organic binder can be decomposed and removed by heating, the thickness of the holding material can be maintained at room temperature, and the thickness of the holding material can be restored by heating. Therefore, since the canning property between the exhaust gas treating body and the casing, the retaining property, and the like are improved, a retaining material containing an organic binder has attracted attention. In particular, as a method for assembling an exhaust gas purification device, a method of press-fitting the exhaust gas treatment body into a casing while being wound with a holding material is generally employed. In this press-fitting method, a large press-fitting load is applied to the holding material. Therefore, the canning property is important.

例えば特許文献1には、狭隘な隙間にも簡単に装填できる無機質繊維成形体を提供することを目的として、無機質繊維からなるマットを厚み方向に圧縮してなる基材中に有機バインダーが均一に含有されてなり、かつ有機バインダーを分解した後の厚み復元率が1.05倍以上である無機質繊維成形体が提案されている。また、特許文献2には、保持シール材を金属製シェルに引っ掛からずに挿入することを目的として、結晶質アルミナ繊維のマット状物の片側端部に有機バインダーを含浸させることにより、マットの厚み方向に傾斜を持たせた保持シール材が提案されている。   For example, Patent Document 1 discloses that an organic binder is uniformly distributed in a base material formed by compressing a mat made of inorganic fibers in the thickness direction for the purpose of providing an inorganic fiber molded body that can be easily loaded into a narrow gap. There has been proposed an inorganic fiber molded body which is contained and has a thickness recovery rate of 1.05 times or more after decomposing an organic binder. Further, in Patent Document 2, the thickness of the mat is obtained by impregnating one end of a crystalline alumina fiber mat with an organic binder for the purpose of inserting the holding sealing material without being caught by the metal shell. A holding sealing material having an inclination in the direction has been proposed.

特開平8−174687号公報JP-A-8-174687 特開平11−343846号公報JP 11-343846 A

特許文献1に記載の無機質繊維成形体からなる保持材では、厚み方向に圧縮した状態を維持するためには、ある程度の有機バインダー量を必要とする。しかしながら、無機質繊維成形体に含有される有機バインダーを完全に熱分解するのに多大な労力および時間を要するおそれがある。さらには、有機バインダー量が多いと保持材が硬くなりすぎて排ガス処理体へ巻回しにくくなるおそれもある。
また、特許文献2に記載の保持シール材では、排ガス処理体とケーシングとの間へのキャニング性は向上するものの、排ガス処理体への巻回しやすさの点では、巻き付け方向に対して垂直な方向において有機バインダー量の分布が不均衡あるため、排ガス処理体への巻き付け作業の効率が悪いという問題がある。
In the holding material made of the inorganic fiber molded body described in Patent Document 1, a certain amount of organic binder is required to maintain the compressed state in the thickness direction. However, a great deal of labor and time may be required to completely thermally decompose the organic binder contained in the inorganic fiber molded body. Furthermore, if the amount of the organic binder is large, the holding material may become too hard to be wound around the exhaust gas treating body.
Moreover, in the holding sealing material described in Patent Document 2, the canning property between the exhaust gas treating body and the casing is improved, but in terms of ease of winding around the exhaust gas treating body, the holding sealing material is perpendicular to the winding direction. Since the distribution of the organic binder amount is unbalanced in the direction, there is a problem that the efficiency of the winding work around the exhaust gas treating body is poor.

本発明は、上記問題点に鑑みてなされたものであり、有機バインダー量を低減しつつ、排ガス処理体への巻回しやすさおよび排ガス処理体とケーシングとの間への介装しやすさを兼ね備える排ガス浄化装置用保持材を提供することを主目的とする。   The present invention has been made in view of the above-described problems, and reduces the amount of organic binder, and facilitates winding around the exhaust gas treatment body and ease of interposition between the exhaust gas treatment body and the casing. The main object is to provide a holding material for an exhaust gas purifying apparatus that is also used.

上記課題を解決するために、本発明者等は鋭意検討した結果、嵌合部の有機バインダー含有量を本体部の有機バインダー含有量よりも多くすることにより、有機バインダー量を低減しつつ、排ガス処理体への巻付性および排ガス処理体とケーシングとの間へのキャニング性の両方を向上させることができることを見出し、本発明を完成した。   In order to solve the above-mentioned problems, the present inventors have intensively studied, and as a result, by increasing the organic binder content of the fitting portion more than the organic binder content of the main body portion, while reducing the organic binder amount, exhaust gas It has been found that both the winding property to the treatment body and the canning property between the exhaust gas treatment body and the casing can be improved, and the present invention has been completed.

すなわち、本発明は、平面視形状が矩形状である本体部と、上記本体部の一端に設けられた第1嵌合部と、上記本体部の他端に設けられ、上記第1嵌合部と嵌合する第2嵌合部とを有し、有機バインダーを含有する無機繊維成形体からなる排ガス浄化装置用保持材であって、上記第1嵌合部および上記第2嵌合部の上記有機バインダーの平均含有量が、上記本体部の上記有機バインダーの平均含有量よりも多いことを特徴とする排ガス浄化装置用保持材を提供する。   That is, the present invention provides a main body having a rectangular shape in plan view, a first fitting portion provided at one end of the main body, and the first fitting portion provided at the other end of the main body. A holding member for an exhaust gas purification apparatus comprising an inorganic fiber molded body containing an organic binder, wherein the first fitting part and the second fitting part are configured as described above. Provided is a holding material for an exhaust gas purifying apparatus, wherein the average content of the organic binder is higher than the average content of the organic binder in the main body.

本発明においては、第1嵌合部および第2嵌合部の有機バインダーの平均含有量が、本体部の有機バインダーの平均含有量よりも多いことにより、第1嵌合部および第2嵌合部では本体部よりも無機繊維を有機バインダーによって強固に固定し、厚みを薄くすることができる。また、本体部は第1嵌合部および第2嵌合部よりも有機バインダーの平均含有量が少なく、排ガス浄化装置用保持材全体の有機バインダーの含有量を減らすことができる。したがって、有機バインダーの含有量を低減させつつ、排ガス処理体への巻付性および排ガス処理体とケーシングとの間へのキャニング性の両方を向上させることが可能である。さらには、生産性を飛躍的に高めることが可能である。   In the present invention, since the average content of the organic binder in the first fitting portion and the second fitting portion is larger than the average content of the organic binder in the main body portion, the first fitting portion and the second fitting portion In the part, the inorganic fiber can be more firmly fixed with the organic binder than in the main body part, and the thickness can be reduced. Further, the main body portion has a smaller average content of the organic binder than the first fitting portion and the second fitting portion, and can reduce the content of the organic binder in the entire exhaust gas purifying apparatus holding material. Therefore, it is possible to improve both the winding property to the exhaust gas treating body and the canning property between the exhaust gas treating body and the casing while reducing the content of the organic binder. Furthermore, productivity can be dramatically increased.

また本発明においては、上記第1嵌合部および上記第2嵌合部の上記有機バインダーの平均含有量が固形分換算で、上記第1嵌合部および上記第2嵌合部に含まれる無機繊維100質量部に対して2.0質量部〜25.0質量部の範囲内であり、上記本体部の上記有機バインダーの平均含有量が固形分換算で、上記本体部に含まれる無機繊維100質量部に対して0.5質量部〜3.0質量部の範囲内であることが好ましい。各部分の有機バインダーの平均含有量が上述の範囲内であることにより、排ガス処理体への巻付性および排ガス処理体とケーシングとの間へのキャニング性をさらに高めることができる。   Moreover, in this invention, the average content of the said organic binder of the said 1st fitting part and the said 2nd fitting part is solid content conversion, and the inorganic contained in the said 1st fitting part and the said 2nd fitting part Inorganic fiber 100 which is in the range of 2.0 parts by mass to 25.0 parts by mass with respect to 100 parts by mass of fiber, and the average content of the organic binder in the main body part is converted to solid content and contained in the main body part. It is preferably within a range of 0.5 to 3.0 parts by mass with respect to parts by mass. When the average content of the organic binder in each part is within the above-described range, it is possible to further improve the winding property around the exhaust gas treating body and the canning property between the exhaust gas treating body and the casing.

さらに本発明においては、上記第1嵌合部および上記第2嵌合部の上記有機バインダーの平均含有量に対する上記本体部の上記有機バインダーの平均含有量の比が0.50以下であることが好ましい。上記の比が上記範囲であることにより、排ガス処理体への巻付性および排ガス処理体とケーシングとの間へのキャニング性をさらに高めることができる。   Further, in the present invention, the ratio of the average content of the organic binder in the main body portion to the average content of the organic binder in the first fitting portion and the second fitting portion is 0.50 or less. preferable. When said ratio is the said range, the winding property to an exhaust gas processing body and the canning property between an exhaust gas processing body and a casing can further be improved.

本発明においては、有機バインダー量を低減しつつ、排ガス処理体への巻付性および排ガス処理体とケーシングとの間へのキャニング性の両方を向上させることができるという効果を奏する。   In this invention, there exists an effect that both the winding property to an exhaust gas treatment body and the canning property between an exhaust gas treatment body and a casing can be improved, reducing the amount of organic binders.

本発明の排ガス浄化装置用保持材の一例を示す概略平面図である。It is a schematic plan view which shows an example of the holding | maintenance material for exhaust gas purification apparatuses of this invention. 本発明における排ガス浄化装置の一例を示す概略斜視図および断面図である。It is the schematic perspective view and sectional drawing which show an example of the exhaust gas purification apparatus in this invention.

以下、本発明の排ガス浄化装置用保持材について詳細に説明する。
本発明の排ガス浄化装置用保持材は、平面視形状が矩形状である本体部と、上記本体部の一端に設けられた第1嵌合部と、上記本体部の他端に設けられ、上記第1嵌合部と嵌合する第2嵌合部とを有し、有機バインダーを含有する無機繊維成形体からなる排ガス浄化装置用保持材であって、上記第1嵌合部および上記第2嵌合部の上記有機バインダーの平均含有量が、上記本体部の上記有機バインダーの平均含有量よりも多いことを特徴とするものである。
Hereinafter, the holding | maintenance material for exhaust gas purification apparatuses of this invention is demonstrated in detail.
A holding material for an exhaust gas purifying apparatus of the present invention is provided at a main body portion having a rectangular shape in plan view, a first fitting portion provided at one end of the main body portion, and at the other end of the main body portion, A holding material for an exhaust gas purifying apparatus comprising an inorganic fiber molded body having an organic binder and having a first fitting portion and a second fitting portion, and the first fitting portion and the second fitting portion. The average content of the organic binder in the fitting portion is larger than the average content of the organic binder in the main body portion.

本発明の排ガス浄化装置用保持材について、図面を参照して説明する。
図1は本発明の排ガス浄化装置用保持材の一例を示す概略平面図である。図1に示すように、排ガス浄化装置用保持材1は、平面視形状が矩形状である本体部2と、本体部2の一方の短辺11a側に設けられた第1嵌合部3と、本体部2の他方の短辺11b側に設けられた第2嵌合部4とを有している。第2嵌合部4は第1嵌合部3と嵌合するものであり、第1嵌合部3の形状と逆の形状を有している。
The holding | maintenance material for exhaust gas purification apparatuses of this invention is demonstrated with reference to drawings.
FIG. 1 is a schematic plan view showing an example of a holding material for an exhaust gas purifying apparatus according to the present invention. As shown in FIG. 1, the exhaust gas purifying device holding material 1 includes a main body 2 having a rectangular shape in plan view, and a first fitting portion 3 provided on one short side 11 a side of the main body 2. And the second fitting part 4 provided on the other short side 11b side of the main body part 2. The second fitting portion 4 is fitted with the first fitting portion 3 and has a shape opposite to the shape of the first fitting portion 3.

図2(a)、(b)は本発明の排ガス浄化装置用保持材の使用例の一例を示す概略斜視図および断面図である。図2(a)、(b)に示すように、排ガス浄化装置用保持材1は触媒担持体21に巻き付けられ、触媒担持体21と金属製のケーシング22との間に介装されて、排ガス浄化装置20に用いられる。   FIGS. 2A and 2B are a schematic perspective view and a cross-sectional view showing an example of use of the holding material for an exhaust gas purifying apparatus of the present invention. As shown in FIGS. 2 (a) and 2 (b), the exhaust gas purifying device holding material 1 is wound around a catalyst carrier 21 and interposed between the catalyst carrier 21 and a metal casing 22, and the exhaust gas is purified. Used in the purification device 20.

ここで、排ガス浄化装置用保持材を排ガス処理体に巻き付けた際には、排ガス浄化装置用保持材の嵌合部が浮き上がってしまい、排ガス処理体への巻付性が低下しやすい。これに対し本発明においては、第1嵌合部および第2嵌合部の有機バインダーの平均含有量が、本体部の有機バインダーの平均含有量よりも多いことにより、第1嵌合部および第2嵌合部では本体部よりも無機繊維を有機バインダーによって強固に固定することができる。そのため、排ガス浄化装置用保持材を排ガス処理体に巻き付けた際に、第1嵌合部および第2嵌合部を良好に嵌合することができ、第1嵌合部および第2嵌合部と排ガス処理体との密着性を高めることができる。
また、排ガス浄化装置用保持材に有機バインダーが多く含有されていると硬くなりすぎて排ガス処理体への巻付性が低下するが、本発明においては、本体部は第1嵌合部および第2嵌合部よりも有機バインダーの平均含有量が少ないため、排ガス処理体への追従性が良好であり、本体部と排ガス処理体との密着性を高めることができる。
Here, when the holding material for the exhaust gas purifying apparatus is wound around the exhaust gas treating body, the fitting portion of the holding material for the exhaust gas purifying apparatus is lifted, and the wrapping property to the exhaust gas treating body is likely to be lowered. On the other hand, in the present invention, since the average content of the organic binder in the first fitting portion and the second fitting portion is larger than the average content of the organic binder in the main body portion, In the two fitting portions, the inorganic fibers can be more firmly fixed by the organic binder than the main body portion. Therefore, when the exhaust gas purifying device holding material is wound around the exhaust gas treating body, the first fitting portion and the second fitting portion can be satisfactorily fitted, and the first fitting portion and the second fitting portion. And the exhaust gas treating body can be improved in adhesion.
Further, when the organic binder is contained in the holding material for the exhaust gas purifying apparatus, it becomes too hard and the wrapping property to the exhaust gas treating body is deteriorated. In the present invention, the main body portion includes the first fitting portion and the first fitting portion. Since the average content of the organic binder is smaller than that of the two fitting parts, the followability to the exhaust gas treating body is good, and the adhesion between the main body part and the exhaust gas treating body can be improved.

また本発明においては、第1嵌合部および第2嵌合部の有機バインダーの平均含有量が、本体部の有機バインダーの平均含有量よりも多いことにより、第1嵌合部および第2嵌合部では本体部よりも厚みを薄くすることができる。そのため、排ガス処理体を排ガス浄化装置用保持材で巻回した状態でケーシングに容易に圧入することができる。   In the present invention, since the average content of the organic binder in the first fitting portion and the second fitting portion is larger than the average content of the organic binder in the main body portion, the first fitting portion and the second fitting are provided. The joint portion can be made thinner than the main body portion. Therefore, the exhaust gas treatment body can be easily press-fitted into the casing in a state where the exhaust gas treatment body is wound with the holding material for the exhaust gas purification device.

また、上述したように本発明においては、本体部は第1嵌合部および第2嵌合部よりも有機バインダーの平均含有量が少なくなっており、排ガス浄化装置用保持材全体に有機バインダーを多量に含有させる必要はなく、排ガス浄化装置用保持材全体の有機バインダーの含有量を低減することができる。そのため、排ガス浄化装置用保持材に含有される有機バインダーの熱分解に多大な労力および時間を要することがなく、生産性を高めることができる。   Further, as described above, in the present invention, the main body portion has a lower average content of organic binder than the first fitting portion and the second fitting portion, and the organic binder is added to the entire holding material for the exhaust gas purification apparatus. It is not necessary to contain a large amount, and the content of the organic binder in the entire holding material for the exhaust gas purifying apparatus can be reduced. For this reason, it is possible to increase productivity without requiring much labor and time for the thermal decomposition of the organic binder contained in the holding material for the exhaust gas purifying apparatus.

したがって本発明においては、有機バインダーの含有量を低減させつつ、排ガス処理体への巻付性および排ガス処理体とケーシングとの間へのキャニング性の両方を向上させることが可能である。さらには、生産性を飛躍的に高めることが可能である。   Therefore, in the present invention, it is possible to improve both the winding property around the exhaust gas treating body and the canning property between the exhaust gas treating body and the casing while reducing the content of the organic binder. Furthermore, productivity can be dramatically increased.

以下、本発明の排ガス浄化装置用保持材における各構成について説明する。   Hereinafter, each structure in the holding | maintenance material for exhaust gas purification apparatuses of this invention is demonstrated.

1.第1嵌合部および第2嵌合部
本発明において、第1嵌合部は本体部の一端に設けられるものであり、第2嵌合部は本体部の他端に設けられ、上記第1嵌合部と嵌合するものである。
1. 1st fitting part and 2nd fitting part In this invention, a 1st fitting part is provided in the end of a main-body part, a 2nd fitting part is provided in the other end of a main-body part, and said 1st It fits with the fitting part.

ここで、「第1嵌合部」および「第2嵌合部」とは、本体部の両方の短辺側にそれぞれ設けられている領域であって、本体部の幅よりも狭い幅を有する領域をいう。例えば図1に示すように、第1嵌合部3の幅W、第2嵌合部4の幅W、Wは本体部2の幅Wよりも狭くなっている。 Here, the “first fitting portion” and the “second fitting portion” are regions respectively provided on both short sides of the main body portion and have a width narrower than the width of the main body portion. An area. For example, as shown in FIG. 1, the width W 2 of the first fitting portion 3 and the widths W 3 and W 4 of the second fitting portion 4 are narrower than the width W 1 of the main body portion 2.

第1嵌合部および第2嵌合部の形状としては、第1嵌合部と第2嵌合部とが嵌合する形状であれば特に限定されるものではなく、公知の任意の形状とすることができる。
第1嵌合部および第2嵌合部の大きさも、公知の任意の大きさであればよい。
The shape of the first fitting portion and the second fitting portion is not particularly limited as long as the first fitting portion and the second fitting portion are fitted, and any known shape is possible. can do.
The magnitude | size of a 1st fitting part and a 2nd fitting part should just be a well-known arbitrary magnitude | size.

本発明においては、第1嵌合部および第2嵌合部の有機バインダーの平均含有量が、本体部の有機バインダーの平均含有量よりも多くなっている。
第1嵌合部および第2嵌合部の有機バインダーの平均含有量としては、本体部の有機バインダーの平均含有量よりも多ければよいが、具体的には、第1嵌合部および第2嵌合部の有機バインダーの平均含有量が固形分換算で、第1嵌合部および第2嵌合部に含まれる無機繊維100質量部に対して2.0質量部〜25.0質量部の範囲内であることが好ましく、3.0質量部〜20.0質量部の範囲内であることがより好ましい。第1嵌合部および第2嵌合部の有機バインダーの平均含有量が少なすぎると、排ガス処理体への巻付性および排ガス処理体とケーシングとの間へのキャニング性を高める効果が十分に得られない場合がある。また、第1嵌合部および第2嵌合部の有機バインダーの平均含有量が多すぎると、コスト高となるとともに、有機バインダーが分解されにくくなったり、有機バインダーの分解によって生じるガスにより作業環境が悪化したりするおそれがある。
In this invention, the average content of the organic binder of a 1st fitting part and a 2nd fitting part is larger than the average content of the organic binder of a main-body part.
The average content of the organic binder in the first fitting portion and the second fitting portion may be larger than the average content of the organic binder in the main body portion, but specifically, the first fitting portion and the second fitting content. The average content of the organic binder in the fitting portion in terms of solid content is 2.0 parts by weight to 25.0 parts by weight with respect to 100 parts by weight of the inorganic fibers contained in the first fitting part and the second fitting part. It is preferably within the range, and more preferably within the range of 3.0 parts by mass to 20.0 parts by mass. If the average content of the organic binder in the first fitting part and the second fitting part is too small, the effect of improving the winding property to the exhaust gas treating body and the canning property between the exhaust gas treating body and the casing is sufficient. It may not be obtained. Moreover, when there is too much average content of the organic binder of a 1st fitting part and a 2nd fitting part, while it will become high cost, it will become difficult to decompose | disassemble an organic binder or work environment by the gas produced by decomposition | disassembly of an organic binder May get worse.

また、第1嵌合部および第2嵌合部の有機バインダーの平均含有量Cに対する本体部の有機バインダーの平均含有量Cの比C/Cが0.50以下であることが好ましく、より好ましくは0.02以上0.50以下の範囲内、さらに好ましくは0.05以上0.40以下の範囲内、特に好ましくは0.10以上0.35以下の範囲内、最も好ましくは0.20以上0.30以下の範囲内である。上記の比C/Cが上記範囲であることにより、排ガス処理体への巻付性および排ガス処理体とケーシングとの間へのキャニング性をさらに向上させることができるからである。 In addition, the ratio C B / C A of the average content C B of the organic binder in the main body part to the average content C A of the organic binder in the first fitting part and the second fitting part may be 0.50 or less. More preferably, it is in the range of 0.02 to 0.50, more preferably in the range of 0.05 to 0.40, particularly preferably in the range of 0.10 to 0.35, most preferably It is in the range of 0.20 or more and 0.30 or less. This is because, when the ratio C B / C A is within the above range, the windability of the exhaust gas treating body and the canning property between the exhaust gas treating body and the casing can be further improved.

第1嵌合部の有機バインダーの平均含有量および第2嵌合部の有機バインダーの平均含有量は、本体部の有機バインダーの平均含有量よりも多ければ、互いに同一であっても異なっていてもよい。例えば図1に示すように第1嵌合部3が凸部であり、第2嵌合部が凹部である場合には、凹部である第2嵌合部4の有機バインダーの平均含有量が、凸部である第1嵌合部3の有機バインダーの平均含有量よりも少ないことが好ましい。凹部(第2嵌合部)が凸部(第1嵌合部)よりも有機バインダーの平均含有量が相対的に少ないことにより、外側に反りにくく、本発明の排ガス浄化装置用保持材を排ガス処理体に巻き付け易くなる。また、凸部(第1嵌合部)が凹部(第2嵌合部)よりも有機バインダーの平均含有量が相対的に多いことにより、凸部(第1嵌合部)の形状が保持されるため、凹部(第2嵌合部)の間に凸部(第1嵌合部)を設置しやすくなり、巻付性が良くなる。したがって、排ガス処理体への巻付性をさらに高めることができる。   If the average content of the organic binder in the first fitting part and the average content of the organic binder in the second fitting part are greater than the average content of the organic binder in the main body part, they may be the same or different from each other. Also good. For example, as shown in FIG. 1, when the first fitting portion 3 is a convex portion and the second fitting portion is a concave portion, the average content of the organic binder in the second fitting portion 4 that is the concave portion is It is preferably less than the average content of the organic binder in the first fitting portion 3 that is a convex portion. Since the concave portion (second fitting portion) has a relatively small average content of organic binder than the convex portion (first fitting portion), the concave portion (second fitting portion) is less likely to warp outward, and the holding material for an exhaust gas purifying apparatus of the present invention is used as an exhaust gas. It becomes easy to wrap around the processing body. Moreover, since the convex portion (first fitting portion) has a relatively higher average content of the organic binder than the concave portion (second fitting portion), the shape of the convex portion (first fitting portion) is maintained. Therefore, it becomes easy to install a convex part (1st fitting part) between recessed parts (2nd fitting part), and winding property becomes good. Therefore, the winding property to the exhaust gas treating body can be further improved.

なお、第1嵌合部および第2嵌合部の有機バインダーの平均含有量は、例えば排ガス洗浄用マットから第1嵌合部および第2嵌合部を切り出した後、第1嵌合部および第2嵌合部について燃焼試験を行い、燃焼前後の重量変化により測定することができる。
また、本体部の有機バインダーの平均含有量についても、同様に測定することができる。
The average content of the organic binder in the first fitting portion and the second fitting portion is obtained by cutting the first fitting portion and the second fitting portion from the exhaust gas cleaning mat, for example, A combustion test is performed on the second fitting portion, and the measurement can be performed by the weight change before and after the combustion.
Moreover, it can measure similarly about the average content of the organic binder of a main-body part.

また、第1嵌合部および第2嵌合部では有機バインダーは均一に含有されていてもよく、不均一に含有されていてもよい。例えば、第1嵌合部および第2嵌合部の端部に有機バインダーが多く含有されていてもよい。   Moreover, the organic binder may be contained uniformly in the 1st fitting part and the 2nd fitting part, and may be contained nonuniformly. For example, many organic binders may be contained in the end portions of the first fitting portion and the second fitting portion.

2.本体部
本発明において、本体部は平面視形状が矩形状であるものである。
本体部の形状は平面視形状が矩形状であればよく、その大きさとしては公知の任意の大きさとすることができる。
2. Main Body In the present invention, the main body has a rectangular shape in plan view.
As long as the shape of the main body portion is a rectangular shape in plan view, the size can be any known size.

本体部の有機バインダーの平均含有量としては、第1嵌合部および第2嵌合部の有機バインダーの平均含有量よりも少なければよいが、具体的には、本体部の有機バインダーの平均含有量が固形分換算で、本体部に含まれる無機繊維100質量部に対して0.5質量部〜3.0質量部の範囲内であることが好ましく、より好ましくは0.75質量部〜2.5質量部の範囲内、特に好ましくは1.0質量部〜2.0質量部の範囲内である。本体部の有機バインダーの平均含有量が少なすぎると、有機バインダーを含有する無機繊維成形体の厚みを維持できないおそれがある。また、本体部の有機バインダーの平均含有量が多すぎると、コスト高となるとともに、有機バインダーが分解されにくくなったり、有機バインダーの分解によって生じるガスにより作業環境が悪化したりするおそれがある。   As an average content of the organic binder in the main body, it should be less than the average content of the organic binder in the first fitting portion and the second fitting portion, specifically, the average content of the organic binder in the main body portion. The amount is preferably in the range of 0.5 to 3.0 parts by mass, more preferably 0.75 to 2 parts by mass, in terms of solid content, with respect to 100 parts by mass of inorganic fibers contained in the main body. Within the range of 0.5 parts by mass, particularly preferably within the range of 1.0 part by mass to 2.0 parts by mass. If the average content of the organic binder in the main body is too small, the thickness of the inorganic fiber molded body containing the organic binder may not be maintained. Moreover, when there is too much average content of the organic binder of a main-body part, while it becomes high cost, there exists a possibility that an organic binder may become difficult to decompose | disassemble or a working environment may deteriorate with the gas produced by decomposition | disassembly of an organic binder.

また、本体部では有機バインダーは均一に含有されていてもよく、不均一に含有されていてもよい。例えば、本体部が有機バインダーの含有量が少ない部分と多い部分とを有していてもよい。この場合、本体部において有機バインダーの含有量が多い部分では厚みを薄くすることができるため、排ガス処理体とケーシングとの間へのキャニング性の向上が期待できる。   Moreover, the organic binder may be contained uniformly in the main body part or may be contained non-uniformly. For example, the main body part may have a part with a small content and a large part of the organic binder. In this case, since the thickness can be reduced at the portion where the content of the organic binder is large in the main body, an improvement in the canning property between the exhaust gas treating body and the casing can be expected.

3.無機繊維成形体
本発明において、無機繊維成形体は無機繊維の不織布状の集合体であり、例えばマット、ブランケットまたはブロック等と称されるものである。また、無機繊維成形体は有機バインダーを含有するものである。
3. Inorganic fiber molded body In the present invention, the inorganic fiber molded body is a non-woven aggregate of inorganic fibers, and is called, for example, a mat, a blanket or a block. Moreover, the inorganic fiber molded body contains an organic binder.

(1)無機繊維
無機繊維成形体を構成する無機繊維としては、特に限定されるものではなく、例えばシリカ、アルミナ/シリカ、これらを含むジルコニア、スピネル、チタニア等の単独、または複合繊維が挙げられる。中でもアルミナ/シリカ系繊維が好ましく、特に結晶質アルミナ/シリカ系繊維が好ましい。アルミナ/シリカ系繊維のアルミナ/シリカの組成比(重量比)は60〜98/40〜2の範囲内であることが好ましく、さらに好ましくは70〜74/30〜26の範囲内である。
(1) Inorganic fiber The inorganic fiber constituting the inorganic fiber molded body is not particularly limited, and examples thereof include silica, alumina / silica, zirconia containing these, spinel, titania alone, or composite fibers. . Of these, alumina / silica fibers are preferable, and crystalline alumina / silica fibers are particularly preferable. The composition ratio (weight ratio) of alumina / silica of the alumina / silica fiber is preferably in the range of 60 to 98/40 to 2, and more preferably in the range of 70 to 74/30 to 26.

無機繊維の平均繊維径は3μm〜8μmの範囲内、特に5μm〜6μmの範囲内であることが好ましい。無機繊維の平均繊維径が大きすぎると無機繊維成形体の反発力が失われ、小さすぎると空気中に浮遊する発塵量が多くなるおそれがある。   The average fiber diameter of the inorganic fibers is preferably in the range of 3 μm to 8 μm, particularly preferably in the range of 5 μm to 6 μm. If the average fiber diameter of the inorganic fibers is too large, the repulsive force of the inorganic fiber molded body is lost, and if it is too small, the amount of dust generated floating in the air may increase.

無機繊維成形体の製造方法としては、特に限定されるものではなく、公知の任意の方法を採用することができる。中でも、無機繊維成形体は、ニードリング処理が施されたものであることが好ましい。ニードリング処理によって、無機繊維成形体を構成する無機繊維同士が絡んだ強固な無機繊維成形体となるだけでなく、無機繊維成形体の厚みを調整することができる。   It does not specifically limit as a manufacturing method of an inorganic fiber molded object, A well-known arbitrary method is employable. Especially, it is preferable that the inorganic fiber molded object is a thing in which the needling process was performed. By the needling treatment, not only a strong inorganic fiber molded body in which inorganic fibers constituting the inorganic fiber molded body are entangled but also the thickness of the inorganic fiber molded body can be adjusted.

無機繊維成形体の厚みとしては、特に限定されるものではなく、用途等に応じて適宜選択される。例えば無機繊維成形体の厚みは2mm〜50mm程度とすることができる。   It does not specifically limit as thickness of an inorganic fiber molded object, According to a use etc., it selects suitably. For example, the thickness of the inorganic fiber molded body can be about 2 mm to 50 mm.

(2)有機バインダー
有機バインダーとしては、例えば各種のゴム、水溶性高分子化合物、熱可塑性樹脂、熱硬化性樹脂等を使用することができる。中でも、アクリルゴム、ニトリルゴム等の合成ゴム;カルボキシメチルセルロース、ポリビニルアルコール等の水溶性高分子化合物;またはアクリル樹脂が好ましい。特に、アクリルゴム、ニトリルゴム、カルボキシメチルセルロース、ポリビニルアルコール、アクリルゴムに含まれないアクリル樹脂が好ましい。これらの有機バインダーは、有機バインダー液の調製または入手が容易であり、また無機繊維成形体への塗布操作も簡単であり、比較的低含有量としても十分な厚み拘束力を発揮し、得られる成形体が柔軟で強度に優れ、使用温度条件下で容易に分解または焼失されることから好適に使用することができる。有機バインダーは、1種単独で用いてもよく2種以上を混合して用いてもよい。
(2) Organic binder As the organic binder, for example, various rubbers, water-soluble polymer compounds, thermoplastic resins, thermosetting resins and the like can be used. Among these, synthetic rubbers such as acrylic rubber and nitrile rubber; water-soluble polymer compounds such as carboxymethyl cellulose and polyvinyl alcohol; or acrylic resins are preferable. In particular, acrylic rubber, nitrile rubber, carboxymethyl cellulose, polyvinyl alcohol, and acrylic resin not contained in acrylic rubber are preferable. These organic binders are easy to prepare or obtain an organic binder liquid, and are easy to apply to an inorganic fiber molded body, exhibiting sufficient thickness restraining force even with a relatively low content, and obtained. The molded body is flexible and excellent in strength, and can be suitably used because it is easily decomposed or burnt off under the operating temperature conditions. An organic binder may be used individually by 1 type, and 2 or more types may be mixed and used for it.

有機バインダーを含有する無機繊維成形体の製造方法としては、例えば無機繊維成形体に有機バインダー液を塗布し、乾燥させる方法が挙げられる。
有機バインダー液としては、有機バインダーを含む水溶液、水分散型のエマルション、ラテックス、または有機溶媒溶液を用いることができる。これらは市販されており、これらの有機バインダー液は、そのまま又は水等で希釈して用いることができ、無機繊維成形体に有機バインダー液を塗布するのに好適に使用することができる。特にエマルションが好ましい。
As a manufacturing method of the inorganic fiber molded object containing an organic binder, the method of apply | coating an organic binder liquid to an inorganic fiber molded object, and making it dry is mentioned, for example.
As the organic binder liquid, an aqueous solution containing an organic binder, a water-dispersed emulsion, latex, or an organic solvent solution can be used. These are commercially available, and these organic binder liquids can be used as they are or diluted with water or the like, and can be suitably used for applying an organic binder liquid to an inorganic fiber molded body. An emulsion is particularly preferable.

有機バインダー液の塗布方法としては、無機繊維成形体に有機バインダー液を均一に塗布することができる方法であれば特に限定されるものではなく、例えばキスコート法、スプレー法、浸漬法、ロールコート法、グラビアコート法、ダイコート法、カーテンコート法等、一般的な塗布方法から適宜選択することができる。有機バインダー液の塗布は複数回繰り返し行ってもよい。   The method for applying the organic binder liquid is not particularly limited as long as the organic binder liquid can be uniformly applied to the inorganic fiber molded body. For example, the kiss coating method, the spray method, the dipping method, the roll coating method. It can be appropriately selected from general coating methods such as a gravure coating method, a die coating method, and a curtain coating method. The application of the organic binder liquid may be repeated a plurality of times.

有機バインダー液を塗布する際、第1嵌合部および第2嵌合部の有機バインダーの平均含有量を本体部の有機バインダーの平均含有量よりも多くするには、例えば第1嵌合部および第2嵌合部に有機バインダー液を塗布する回数を多くすればよい。この際、塗布領域の調整が容易であることから、スプレー法が好ましく用いられる。また、本体部にマスキングを施すことも好ましい。   When applying the organic binder liquid, in order to increase the average content of the organic binder in the first fitting portion and the second fitting portion, compared to the average content of the organic binder in the main body portion, for example, the first fitting portion and What is necessary is just to increase the frequency | count of apply | coating an organic binder liquid to a 2nd fitting part. At this time, the spray method is preferably used because the application region can be easily adjusted. It is also preferable to mask the main body.

有機バインダー液が塗布された無機繊維成形体は所定の厚みに圧縮してもよい。圧縮方法としては、一般的な方法を採用することができる。   The inorganic fiber molded body to which the organic binder liquid is applied may be compressed to a predetermined thickness. A general method can be adopted as the compression method.

有機バインダー液が塗布された無機繊維成形体の乾燥方法としては、例えば加熱乾燥、通気乾燥、減圧乾燥、遠心乾燥、吸引乾燥、加圧乾燥、自然乾燥等が挙げられる。   Examples of the method for drying the inorganic fiber molded body to which the organic binder liquid is applied include heat drying, aeration drying, reduced pressure drying, centrifugal drying, suction drying, pressure drying, and natural drying.

4.排ガス浄化装置用保持材
本発明の排ガス浄化装置用保持材全体の有機バインダーの平均含有量としては、例えば、排ガス浄化装置用保持材全体の有機バインダーの平均含有量が固形分換算で、排ガス浄化装置用保持材全体に含まれる無機繊維100質量部に対して0.5質量部〜6.0質量部の範囲内であることが好ましく、より好ましくは1.0質量部〜4.0質量部の範囲内、特に好ましくは1.5質量部〜3.5質量部の範囲内である。排ガス浄化装置用保持材全体の有機バインダーの平均含有量が少なすぎると、有機バインダーを含有する無機繊維成形体の厚みを維持できないおそれがある。また、排ガス浄化装置用保持材全体の有機バインダーの平均含有量が多すぎると、コスト高となるとともに、有機バインダーが分解されにくくなったり、有機バインダーの分解によって生じるガスにより作業環境が悪化したりするおそれがある。
4). As the average content of the organic binder in the whole holding material for exhaust gas purification apparatus of the present invention, for example, the average content of the organic binder in the whole holding material for exhaust gas purification apparatus is in terms of solid content, and the exhaust gas purification It is preferably within a range of 0.5 to 6.0 parts by mass, more preferably 1.0 to 4.0 parts by mass with respect to 100 parts by mass of inorganic fibers contained in the entire holding material for apparatus. In the range of 1.5 parts by mass to 3.5 parts by mass. When the average content of the organic binder in the entire exhaust gas purifying holding material is too small, the thickness of the inorganic fiber molded body containing the organic binder may not be maintained. In addition, if the average content of the organic binder in the entire holding material for the exhaust gas purifying device is too high, the cost becomes high, the organic binder becomes difficult to be decomposed, or the working environment is deteriorated by the gas generated by the decomposition of the organic binder. There is a risk.

5.用途
本発明の排ガス浄化装置用保持材は、排ガス浄化装置に好適に用いられる。
排ガス浄化装置は、例えば触媒担持体や粒子フィルタ等の排ガス処理体と、排ガス処理体を収容する金属製のケーシングと、排ガス処理体およびケーシングの間に介装された保持材とを備えるものである。具体的には、触媒コンバータやディーゼルパティキュラーフィルタ(DPF)が挙げられる。
排ガス浄化装置の構成は特に限定されるものではなく、本発明の排ガス浄化装置用保持材は、上記の構成を備える一般的な排ガス浄化装置に適用することが可能である。
5. Use The holding | maintenance material for exhaust gas purification apparatuses of this invention is used suitably for an exhaust gas purification apparatus.
The exhaust gas purification device includes, for example, an exhaust gas treatment body such as a catalyst carrier and a particle filter, a metal casing that houses the exhaust gas treatment body, and a holding material interposed between the exhaust gas treatment body and the casing. is there. Specific examples include a catalytic converter and a diesel particulate filter (DPF).
The configuration of the exhaust gas purification device is not particularly limited, and the holding material for the exhaust gas purification device of the present invention can be applied to a general exhaust gas purification device having the above configuration.

また本発明の排ガス浄化装置用保持材は、排ガス浄化装置用の保持材以外にも、例えば断熱材、耐火材、クッション材(保持材)、シール材等に適用することができる。   Moreover, the holding | maintenance material for exhaust gas purification apparatuses of this invention is applicable to a heat insulating material, a fireproof material, a cushion material (holding material), a sealing material etc. other than the holding material for exhaust gas purification apparatuses, for example.

本発明は、上記実施形態に限定されるものではない。上記実施形態は、例示であり、本発明の特許請求の範囲に記載された技術的思想と実質的に同一な構成を有し、同様な作用効果を奏するものは、いかなるものであっても本発明の技術的範囲に包含される。   The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and the present invention has substantially the same configuration as the technical idea described in the claims of the present invention, and any device that exhibits the same function and effect is the present invention. It is included in the technical scope of the invention.

以下に実施例および比較例を示し、本発明をさらに詳細に説明する。   Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

[評価]
(モノリスへの巻付性)
得られた排ガス浄化装置用保持材を直径100.8mmのモノリスに巻き付けた。巻き付ける際に、モノリスに両面テープを貼付し、排ガス浄化装置用保持材を巻き付けた後、嵌合部の剥がれを防ぐためにテープを嵌合部に貼った。巻き付けた後に、嵌合部とモノリスとの密着具合および嵌め合いを目視で確認した。評価基準は以下の通りである。
◎:嵌合部および本体部がモノリスに密接に接触している。
○:嵌合部間の両端がモノリスよりやや離れている。
△:嵌合部がモノリスに巻き付きにくい。
×:嵌合部および本体部がモノリスに巻き回しにくい。
[Evaluation]
(Windability to monolith)
The obtained holding material for an exhaust gas purifying apparatus was wound around a monolith having a diameter of 100.8 mm. When winding, a double-sided tape was affixed to the monolith, a holding material for the exhaust gas purifying device was wound, and then the tape was affixed to the fitting part to prevent the fitting part from peeling off. After winding, the close contact condition and fitting between the fitting part and the monolith were visually confirmed. The evaluation criteria are as follows.
A: The fitting part and the main body part are in intimate contact with the monolith.
○: Both ends between the fitting parts are slightly separated from the monolith.
Δ: The fitting portion is difficult to wind around the monolith.
X: The fitting part and the main body part are not easily wound around the monolith.

(キャニング性試験)
得られた排ガス浄化装置用保持材を直径100.8mmのモノリスに巻回して、嵌合部をテープ止めし、内径107.6mmのステンレス製円筒管へ圧入した後、逆方向から引き抜いた。引き抜き後の排ガス浄化装置用保持材の外観を観察し、排ガス浄化装置用保持材の捲れや剥がれの有無を調べた。評価基準は以下の通りである。
◎:圧入・抜去後、保持材へのダメージが少ない。
○:圧入・抜去後、保持材へのダメージが少ないが、シワが見られる。
△:圧入・抜去後、保持材にダメージがあり、一部切れ込みがある。
×:圧入・抜去後、一部保持材が粉化している。
(Canning test)
The obtained exhaust gas purifying apparatus holding material was wound around a monolith having a diameter of 100.8 mm, the fitting portion was taped, pressed into a stainless steel cylindrical tube having an inner diameter of 107.6 mm, and then pulled out from the opposite direction. The appearance of the holding material for the exhaust gas purifying apparatus after drawing was observed, and the presence / absence of stagnation and peeling of the holding material for the exhaust gas purifying apparatus was examined. The evaluation criteria are as follows.
A: Little damage to the holding material after press-fitting and removal.
○: After press-fitting and removing, there is little damage to the holding material, but wrinkles are seen.
Δ: After press-fitting / removing, the holding material is damaged and has a partial cut.
X: After press-fitting and removing, part of the holding material is pulverized.

(有機バインダーの平均含有量)
排ガス浄化装置用保持材を本体部、第1嵌合部および第2嵌合部に切断した。各部分について800℃×1時間の燃焼試験を行い、燃焼前後の重量変化より各部分の有機バインダーの平均含有量を測定した。無機繊維100質量部に対する有機バインダーの平均含有量(固形分換算)を求めた。
(Average organic binder content)
The holding | maintenance material for exhaust gas purification apparatuses was cut | disconnected to the main-body part, the 1st fitting part, and the 2nd fitting part. Each part was subjected to a combustion test at 800 ° C. for 1 hour, and the average content of the organic binder in each part was measured from the weight change before and after combustion. The average content (in terms of solid content) of the organic binder with respect to 100 parts by mass of the inorganic fibers was determined.

(排ガス浄化装置用保持材全体の有機バインダーの含有量)
得られた排ガス浄化装置用保持材と有機バインダー液塗布前のマットとの重量変化により有機バインダーの含有量を測定した。無機繊維100質量部に対する有機バインダーの含有量(固形分換算)を求めた。
(Content of organic binder in the entire holding material for exhaust gas purification equipment)
The content of the organic binder was measured by the change in the weight of the obtained exhaust gas purifying apparatus holding material and the mat before application of the organic binder liquid. The content (in terms of solid content) of the organic binder with respect to 100 parts by mass of the inorganic fiber was determined.

[実施例1〜4]
長尺の結晶質アルミナ/シリカ系繊維成形体(以下、「原反シート」と称す場合がある。)(三菱樹脂(株)製、商品名:MAFTEC)を用い、原反シートを340mm×114mmのマットに打ち抜いた。マットの形状は図1に示すような形状とした。このマットに、有機バインダー液(アクリルゴムの水分散型エマルジョン、日本ゼオン(株)製、商品名:LX852B、固形分20%)を所定の添着量になるようにスプレーで噴霧した。その後、マットを所定の厚みまで圧縮し、130℃で30分間乾燥を行うことで排ガス浄化装置用保持材を得た。
測定結果を表1に示す。
[Examples 1 to 4]
Using a long crystalline alumina / silica-based fiber molded body (hereinafter sometimes referred to as “raw fabric sheet”) (Mitsubishi Resin Co., Ltd., trade name: MAFTEC), the original fabric sheet is 340 mm × 114 mm. Punched into a mat. The shape of the mat was as shown in FIG. On this mat, an organic binder liquid (water dispersion emulsion of acrylic rubber, manufactured by Nippon Zeon Co., Ltd., trade name: LX852B, solid content 20%) was sprayed so as to have a predetermined adhesion amount. Thereafter, the mat was compressed to a predetermined thickness and dried at 130 ° C. for 30 minutes to obtain a holding material for an exhaust gas purification apparatus.
The measurement results are shown in Table 1.

[比較例1]
長尺の結晶質アルミナ/シリカ系繊維成形(三菱樹脂(株)製、商品名:MAFTEC)を用い、原反シートに有機バインダー液(アクリルゴムの水分散型エマルジョン、日本ゼオン(株)製、商品名:LX852B、固形分30%)を塗布した後、所定の厚みまで圧縮し、乾燥を行った。その後、340mm×114mmのマットに打ち抜くことで排ガス浄化装置用保持材を得た。マットの形状は図1に示すような形状とした。
測定結果を表1に示す。
[Comparative Example 1]
Using a long crystalline alumina / silica fiber molding (Mitsubishi Resin Co., Ltd., trade name: MAFTEC), an organic binder liquid (acrylic rubber water-dispersed emulsion, manufactured by Nippon Zeon Co., Ltd.) (Product name: LX852B, solid content 30%) was applied, and then compressed to a predetermined thickness and dried. Then, the holding | maintenance material for exhaust gas purification apparatuses was obtained by punching out to a 340mmx114mm mat. The shape of the mat was as shown in FIG.
The measurement results are shown in Table 1.

[比較例2]
有機バインダーの添着量を変更したこと以外は、実施例1と同様にして排ガス浄化装置用保持材を得た。
測定結果を表1に示す。
[Comparative Example 2]
A holding material for an exhaust gas purifying apparatus was obtained in the same manner as in Example 1 except that the amount of organic binder attached was changed.
The measurement results are shown in Table 1.

[比較例3]
下記のようにマットに有機バインダー液を塗布したこと以外は、実施例1と同様にして排ガス浄化装置用保持材を得た。
マットの長辺側の片側端部では有機バインダーの添着量が固形分換算で無機繊維100質量部に対して4質量部となり、マットのそれ以外の部分では有機バインダーの添着量が固形分換算で無機繊維100質量部に対して1質量部となるように、マットに有機バインダー液を塗布した。
測定結果を表1に示す。
[Comparative Example 3]
A holding material for an exhaust gas purification apparatus was obtained in the same manner as in Example 1 except that the organic binder liquid was applied to the mat as described below.
At one end on the long side of the mat, the amount of organic binder attached is 4 parts by mass with respect to 100 parts by mass of the inorganic fiber in terms of solids, and at the other part of the mat, the amount of organic binder attached is in terms of solids The organic binder liquid was applied to the mat so as to be 1 part by mass with respect to 100 parts by mass of the inorganic fibers.
The measurement results are shown in Table 1.

Figure 2016151234
Figure 2016151234

上記の結果から、本実施例では巻付性およびキャニング性が優れており、保持材を触媒担持体に巻き付けやすく、また圧入時の嵌合部の捲れを抑制できることが分かった。
また、実施例2〜4のように第2嵌合部(凹部)が第1嵌合部(凸部)よりも有機バインダー含有量が相対的に少ない場合には、比較例1のように第1嵌合部(凸部)と第2嵌合部(凹部)とで有機バインダー含有量が同程度である場合や、比較例2のように第2嵌合部(凹部)が第1嵌合部(凸部)よりも有機バインダー含有量が相対的に多い場合と比較して、巻付性が良くなることが分かった。
From the above results, it was found that in this example, the wrapping property and the canning property are excellent, the holding material can be easily wound around the catalyst carrier, and the fitting portion can be prevented from twisting during press-fitting.
Further, when the second fitting part (concave part) has a relatively smaller organic binder content than the first fitting part (convex part) as in Examples 2 to 4, the second fitting part (concave part) is the same as in Comparative Example 1. The first fitting part (convex part) and the second fitting part (concave part) have the same organic binder content, or the second fitting part (concave part) is the first fitting as in Comparative Example 2. It has been found that the winding property is improved as compared with the case where the organic binder content is relatively larger than that of the portion (convex portion).

1 … 排ガス浄化装置用保持材
2 … 本体部
3 … 第1嵌合部
4 … 第2嵌合部
DESCRIPTION OF SYMBOLS 1 ... Holding material for exhaust gas purification apparatuses 2 ... Main-body part 3 ... 1st fitting part 4 ... 2nd fitting part

Claims (3)

平面視形状が矩形状である本体部と、前記本体部の一端に設けられた第1嵌合部と、前記本体部の他端に設けられ、前記第1嵌合部と嵌合する第2嵌合部とを有し、有機バインダーを含有する無機繊維成形体からなる排ガス浄化装置用保持材であって、
前記第1嵌合部および前記第2嵌合部の前記有機バインダーの平均含有量が、前記本体部の前記有機バインダーの平均含有量よりも多いことを特徴とする排ガス浄化装置用保持材。
A main body portion having a rectangular shape in plan view, a first fitting portion provided at one end of the main body portion, and a second fitting portion provided at the other end of the main body portion and fitted with the first fitting portion. A holding member for an exhaust gas purification apparatus comprising an inorganic fiber molded body having a fitting portion and containing an organic binder,
The holding material for an exhaust gas purifying apparatus, wherein an average content of the organic binder in the first fitting portion and the second fitting portion is larger than an average content of the organic binder in the main body portion.
前記第1嵌合部および前記第2嵌合部の前記有機バインダーの平均含有量が固形分換算で、前記第1嵌合部および前記第2嵌合部に含まれる無機繊維100質量部に対して2.0質量部〜25.0質量部の範囲内であり、前記本体部の前記有機バインダーの平均含有量が固形分換算で、前記本体部に含まれる無機繊維100質量部に対して0.5質量部〜3.0質量部の範囲内であることを特徴とする請求項1に記載の排ガス浄化装置用保持材。   The average content of the organic binder in the first fitting part and the second fitting part is in terms of solid content, and relative to 100 parts by mass of the inorganic fibers contained in the first fitting part and the second fitting part. 2.0 parts by mass to 25.0 parts by mass, and the average content of the organic binder in the main body part in terms of solid content is 0 with respect to 100 parts by mass of inorganic fibers contained in the main body part. It is in the range of 0.5 mass part-3.0 mass parts, The holding | maintenance material for exhaust gas purification apparatuses of Claim 1 characterized by the above-mentioned. 前記第1嵌合部および前記第2嵌合部の前記有機バインダーの平均含有量に対する前記本体部の前記有機バインダーの平均含有量の比が0.50以下であることを特徴とする請求項1または請求項2に記載の排ガス浄化装置用保持材。   The ratio of the average content of the organic binder in the main body portion to the average content of the organic binder in the first fitting portion and the second fitting portion is 0.50 or less. Or the holding | maintenance material for exhaust gas purification apparatuses of Claim 2.
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JP2018119244A (en) * 2017-01-27 2018-08-02 三菱ケミカル株式会社 Manufacturing method of organic binder-containing inorganic fiber molding
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JPH11343846A (en) * 1998-05-30 1999-12-14 Ibiden Co Ltd Manufacture of catalyst converter for exhaust emission control
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JP2018119244A (en) * 2017-01-27 2018-08-02 三菱ケミカル株式会社 Manufacturing method of organic binder-containing inorganic fiber molding
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