JP3283346B2 - Clay composition for extrusion molding - Google Patents
Clay composition for extrusion moldingInfo
- Publication number
- JP3283346B2 JP3283346B2 JP17946893A JP17946893A JP3283346B2 JP 3283346 B2 JP3283346 B2 JP 3283346B2 JP 17946893 A JP17946893 A JP 17946893A JP 17946893 A JP17946893 A JP 17946893A JP 3283346 B2 JP3283346 B2 JP 3283346B2
- Authority
- JP
- Japan
- Prior art keywords
- clay composition
- weight
- parts
- extrusion molding
- ceramic 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 - Fee Related
Links
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- Compositions Of Oxide Ceramics (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、押出成形用坏土組成物
に関し、詳しくは、セラミックス粉を主成分とし、成形
触媒やその担体として有用である成形体を押出成形にて
製造するために好適に用いることができる坏土組成物に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kneaded clay composition for extrusion molding, and more particularly, to a method for producing a molded body containing ceramic powder as a main component and useful as a molding catalyst and its carrier by extrusion molding. The present invention relates to a clay composition that can be suitably used.
【０００２】[0002]
【従来の技術】セラミックス粉の押出成形法とは、セラ
ミックス粉に種々の添加剤を配合し、通常、水のような
溶媒を加えて混練し、成形性又は可塑性を付与した坏土
組成物を押出機からダイスを通して押出して、所要の形
状を付与する成形法をいい、このような押出成形による
成形体は、近年、触媒のほか、種々の用途に広く用いら
れている。2. Description of the Related Art A ceramic powder extrusion molding method is a method in which various additives are added to ceramic powder, and usually a solvent such as water is added and kneaded to obtain a kneaded clay composition having moldability or plasticity. It refers to a molding method in which a desired shape is imparted by extruding through an extruder through a die. In recent years, such a molded article by extrusion has been widely used for various uses in addition to a catalyst.
【０００３】従来、このようなセラミックス粉の押出成
形体は、セラミックス粉に適量の成形助剤を予備混合
し、これに水、可塑剤、湿潤剤、滑剤等の添加剤を加え
て混合し、これを混練機にて混練して、可塑性を有する
坏土組成物とし、これを押出機にて所要の形状に押出し
た後、乾燥させることによつて製造されている。Conventionally, such an extruded body of ceramic powder is prepared by premixing an appropriate amount of a molding aid with ceramic powder, adding additives such as water, a plasticizer, a wetting agent, and a lubricant, and mixing. This is kneaded with a kneader to obtain a kneaded clay composition having plasticity, extruded into a required shape by an extruder, and dried.
【０００４】このような方法において、上記成形助剤と
しては、保形剤として、通常、メチルセルロースが用い
られることが多い。しかし、保形剤として、メチルセル
ロースを配合した坏土組成物は、混練及び押出成形時
に、坏土組成物が混練機や押出機に接触する部材の表面
との摩擦によつて温度が上昇し、特に、機壁やスクリュ
ーに接触する部分で局部的に温度上昇を起こし、メチル
セルロースが部分的にゲル化する等の問題がある。この
ほか、一般に、セラミックス粉を主成分とする押出成形
用坏土組成物は、その押出成形性に劣る問題がある。In such a method, methylcellulose is often used as a shape-retaining agent as the molding aid. However, the clay composition containing methylcellulose as a shape-retaining agent, during kneading and extrusion, the temperature rises due to friction between the clay composition and the surface of a member that comes into contact with the kneader or extruder, In particular, there is a problem that the temperature is locally increased in a portion which comes into contact with the machine wall or the screw, and methyl cellulose is partially gelled. In addition, in general, there is a problem that the kneaded clay composition mainly composed of ceramic powder is inferior in extrudability.
【０００５】このように、坏土組成物が押出成形性にお
いて劣るときは、混練機内で混練される間に温度が上昇
し、また、押出機においては、成形に際して、その出口
部に装着した押出成形用ダイスによる背圧がかかる部分
で温度が著しく上昇する。しかも、通常、このような坏
土組成物の温度上昇は、坏土組成物全体にわたつて均一
に起こるのではなく、局部的な不均一なものであり、更
に、坏土組成物は、そのように温度上昇した部分から水
分が蒸発して、硬度に変化を起こすので、通常、均一な
押出成形を不可能とする。[0005] As described above, when the kneaded clay composition is inferior in extrudability, the temperature rises during kneading in the kneading machine. The temperature rises remarkably in the area where the back pressure is applied by the molding die. Moreover, usually, such a temperature rise of the kneaded clay composition does not occur uniformly over the entire kneaded clay composition, but is locally nonuniform. As described above, moisture evaporates from the portion where the temperature has risen, causing a change in hardness, so that uniform extrusion is usually impossible.
【０００６】即ち、押出機出口の押出成形用のダイスに
温度分布をもつ坏土組成物が供給されるとき、その温度
分布に起因して、坏土組成物の粘性に不均一が生じ、ダ
イス部において、坏土組成物の流れが不均一となり、ま
た、局部的に硬化した坏土組成物が詰まる等して、押出
成形された成形体に欠損又は欠陥を生じることとなる。
更に、このように欠損や欠陥を有する成形体は、その乾
燥時に歪みや割れを生じて、乾燥収率が低い。That is, when a kneaded clay composition having a temperature distribution is supplied to an extrusion die at the outlet of an extruder, the viscosity of the kneaded clay composition becomes uneven due to the temperature distribution. In the portion, the flow of the kneaded clay composition becomes non-uniform, and the locally cured kneaded clay composition is clogged or the like, thereby causing defects or defects in the extruded molded body.
Furthermore, a molded article having such defects or defects causes distortion or cracking during drying, resulting in a low drying yield.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、従来のセラ
ミックス粉を主成分とする押出成形用坏土組成物におけ
る上記した問題を解決するためになされたものであつ
て、混練機や押出機内において、温度上昇に起因する流
れ性や粘性の変化が少なく、かくして、成形に際して
は、欠損や欠陥が少なく、乾燥に際しては、歪みや割れ
の生じ難い押出成形体を与えて、生産性の高い押出成形
を可能とする押出性にすぐれる押出成形用坏土組成物を
提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems in the conventional clay composition for extrusion molding containing a ceramic powder as a main component. In the process, the change in flowability and viscosity due to the temperature rise is small, and thus, during molding, there are few defects and defects, and when drying, an extruded body that is less likely to generate distortion and cracks is provided, and extrusion with high productivity is provided. An object of the present invention is to provide a kneaded clay composition for extrusion molding having excellent extrudability that enables molding.
【０００８】[0008]
【課題を解決するための手段】本発明による押出成形用
坏土組成物は、セラミックス粉１００重量部に対して、
滑剤として、マイクロクリスタリンワックス、ポリグリ
セリン脂肪酸エステル系ワックス及び脂肪酸アンモニウ
ムから選ばれる少なくとも一種１〜１０重量部と、保形
剤として、ヒドロキシエチルセルロース１〜５重量部
と、得られる組成物に可塑性を有せしめる適量の水とを
含むことを特徴とする。The kneaded clay composition for extrusion molding according to the present invention is based on 100 parts by weight of ceramic powder.
As a lubricant, microcrystalline wax, and at least one 1 to 10 parts by weight selected from polyglycerol fatty acid ester wax and fatty acid ammonium, as Hokatachizai, hydroxyethylcellulose 1-5 parts by weight
And an appropriate amount of water for imparting plasticity to the resulting composition .
【０００９】即ち、本発明による押出成形用坏土組成物
は、マイクロクリスタリンワックス、ポリグリセリン脂
肪酸エステル系ワックス及び脂肪酸アンモニウムから選
ばれる少なくとも一種の滑剤と、保形剤としてのヒドロ
キシエチルセルロースとをそれぞれ所定量、併用する点
に特徴を有し、これによつて、所期の目的を達成するも
のである。That is, the clay composition for extrusion molding according to the present invention comprises at least one lubricant selected from microcrystalline wax, polyglycerin fatty acid ester wax and fatty acid ammonium, and hydroxyethyl cellulose as a shape-retaining agent. It is characterized in that it is quantified and used together, thereby achieving its intended purpose.
【００１０】本発明において、セラミックス粉として
は、酸化チタン、酸化チタン−シリカ複合酸化物、アル
ミナ、ジルコニア、ムライト、シリコンナイトライド、
コージエライト、天然粘土、焼成カオリン、ケイ酸ジル
コニウム、マグネシア−アルミナスピネル等を挙げるこ
とができる。In the present invention, as the ceramic powder, titanium oxide, titanium oxide-silica composite oxide, alumina, zirconia, mullite, silicon nitride,
Cordierite, natural clay, calcined kaolin, zirconium silicate, magnesia-alumina spinel and the like can be mentioned.
【００１１】本発明において、滑剤とは、坏土組成物と
それが接触する押出機の構成部材の表面との間に潤滑性
を付与する作用を有する物質であつて、特に、マイクロ
クリスタリンワックス、ポリグリセリン脂肪酸エステル
系ワックス及び脂肪酸アンモニウムから選ばれる少なく
とも一種が用いられる。In the present invention, the lubricant is a substance having an action of imparting lubricity between the kneaded clay composition and the surface of a component of the extruder with which the clay composition comes into contact. At least one selected from polyglycerin fatty acid ester wax and fatty acid ammonium is used.
【００１２】ここに、マイクロクリスタリンワックスと
は、石油精製後の脱ろう残渣分を溶媒抽出したものであ
る。ポリグリセリン脂肪酸エステル系ワックスとは、ポ
リグリセリンを脂肪酸にてエステル化してなるものであ
つて、具体例として、例えば、ジグリセリンモノイソス
テアレート、ジグリセリンモノオレエート等を挙げるこ
とができる脂肪酸アンモニウムとしては、例えば、ステ
アリン酸アンモニウム、ラウリン酸アンモニウム、パル
ミチン酸アンモニウム等を挙げることができる。Here, the microcrystalline wax is obtained by extracting the dewaxed residue after petroleum refining with a solvent. The polyglycerin fatty acid ester wax is obtained by esterifying polyglycerin with a fatty acid, and specific examples include diglycerin monoisostearate and diglycerin monooleate. Examples thereof include ammonium stearate, ammonium laurate, ammonium palmitate and the like.
【００１３】本発明において、このような滑剤は、セラ
ミックス粉１００重量部に対して、１〜１０重量部の範
囲で用いられる。滑剤の量がセラミックス粉１００重量
部に対して１重量部よりも少ないときは、滑剤としての
効果が不十分である。しかし、１０重量部を超えるとき
は、混練機や押出機のスクリュー部分においてスリップ
現象が著しくなり、坏土組成物の温度を著しく高めるの
で好ましくない。In the present invention, such a lubricant is used in an amount of 1 to 10 parts by weight based on 100 parts by weight of the ceramic powder. When the amount of the lubricant is less than 1 part by weight based on 100 parts by weight of the ceramic powder, the effect as the lubricant is insufficient. However, when the amount exceeds 10 parts by weight, the slip phenomenon becomes remarkable in the screw portion of the kneader or the extruder, and the temperature of the kneaded material composition is remarkably increased.
【００１４】本発明において、保形剤とは、押出成形さ
れた成形体が乾燥するまでに型くずれしないように、成
形体に保形性を与える作用を有する物質であつて、ヒド
ロキシエチルセルロースがセラミックス粉１００重量部
に対して１〜５重量部の範囲で用いられる。保形剤の量
がセラミックス粉１００重量部に対して１重量部よりも
少ないときは、保形剤としての効果が不十分であつて、
成形後の成形体の保形性が十分でない。しかし、５重量
部を超えるときは、坏土組成物が過大な粘性を有するよ
うになり、押出に要する圧力が著しく高くなる。In the present invention, the shape-retaining agent is a substance having an effect of giving shape retention to a molded article so that the extruded molded article does not lose its shape until it is dried. It is used in the range of 1 to 5 parts by weight based on 100 parts by weight. When the amount of the shape retaining agent is less than 1 part by weight based on 100 parts by weight of the ceramic powder, the effect as the shape retaining agent is insufficient, and
The shape retention of the molded article after molding is not sufficient. However, when the amount exceeds 5 parts by weight, the kneaded material composition has an excessive viscosity, and the pressure required for extrusion becomes extremely high.
【００１５】更に、本発明による坏土組成物は、上記以
外に、セラミックス粉を含む坏土組成物の調製及び成形
の技術分野において従来より既に知られているように、
坏土組成物に可塑性を与える可塑剤や、用いる材料に水
に対する濡れ性を与えたり、改善したりするための湿潤
剤、その他の添加剤を適宜に配合することができる。こ
のような可塑剤としては、例えば、グリセリン、プロピ
レングリコール、トリエチレングリコール等の多価アル
コールを挙げることができる。湿潤剤としては、例え
ば、アルコール系、エーテル系、エステル系等の種々の
溶媒類を挙げることができる。Further, in addition to the above, the kneaded clay composition according to the present invention is, as has been conventionally known in the technical field of preparation and molding of a kneaded clay composition containing ceramic powder,
A plasticizer for imparting plasticity to the kneaded clay composition, a wetting agent for imparting or improving the wettability of the material to be used with water, and other additives can be appropriately compounded. Examples of such a plasticizer include polyhydric alcohols such as glycerin, propylene glycol, and triethylene glycol. Examples of the wetting agent include various solvents such as alcohols, ethers, and esters.
【００１６】本発明においては、可塑剤は、セラミック
ス粉が二酸化チタンであるときは、用いることが好まし
く、通常、二酸化チタン１００重量部について、３〜１
５重量部の範囲で用いることが好ましい。しかし、セラ
ミックス粉が二酸化チタン以外であるときは、可塑剤
は、特に、用いることを必要としないが、必要に応じ
て、セラミックス粉１００重量部について、１５重量部
以下の範囲で用いてもよい。In the present invention, the plasticizer is preferably used when the ceramic powder is titanium dioxide. Usually, 3 to 1 plasticizer is used per 100 parts by weight of titanium dioxide.
It is preferable to use it in the range of 5 parts by weight. However, when the ceramic powder is other than titanium dioxide, the plasticizer does not particularly need to be used, but if necessary, may be used in a range of 15 parts by weight or less for 100 parts by weight of the ceramic powder. .
【００１７】湿潤剤は、必要に応じて、セラミックス粉
１００重量部に対して、１５重量部以下の範囲で用いら
れる。また、従来より知られている滑剤、例えば、パラ
フィンワツクス、脂肪族ワツクス、ポリエチレン樹脂等
も、必要に応じて、セラミックス粉１００重量部に対し
て、１０重量部以下の範囲にて本発明による滑剤と併用
することができる。The wetting agent is used, if necessary, in a range of 15 parts by weight or less based on 100 parts by weight of the ceramic powder. Conventionally known lubricants, for example, paraffin wax, aliphatic wax, polyethylene resin, etc., if necessary, may be used according to the present invention in a range of 10 parts by weight or less based on 100 parts by weight of ceramic powder. It can be used in combination with a lubricant.
【００１８】本発明による坏土組成物は、上述したよう
なセラミックス粉、滑剤、保形剤、可塑剤、湿潤剤等を
水と共に混練することによつて得ることができる。本発
明による坏土組成物において、水の量は、得られる坏土
組成物を押出成形が可能であるように、可塑性を有する
ように、適量が用いられる。従つて、本発明において、
用いる水の量は、何ら限定されるものではないが、通
常、セラミックス粉１００重量部に対して、１０〜５０
重量部の範囲であり、好ましくは、１５〜３５重量部の
範囲である。The kneaded clay composition according to the present invention can be obtained by kneading the above-mentioned ceramic powder, lubricant, shape-retaining agent, plasticizer, wetting agent and the like together with water. In the kneaded clay composition according to the present invention, an appropriate amount of water is used so that the obtained kneaded clay composition has plasticity so that extrusion molding is possible. Therefore, in the present invention,
The amount of water to be used is not particularly limited, but usually, 10 to 50 parts by weight based on 100 parts by weight of the ceramic powder.
It is in the range of parts by weight, preferably in the range of 15 to 35 parts by weight.
【００１９】[0019]
【実施例】以下に実施例を挙げて本発明を説明するが、
本発明はこれら実施例により何ら限定されるものではな
い。EXAMPLES The present invention will be described below with reference to examples.
The present invention is not limited by these examples.
【００２０】実施例１ 酸化チタン２００kg、水４４リットル、メタタングステ
ン酸アンモニウム溶液（ＷＯ3 として５０重量％濃度）
７0.６kg、保形剤としてヒドロキシエチルセルロース４
kg、滑剤としてステアリン酸アンモニウムエマルジョン
（ステアリン酸アンモニウムとして４０重量％濃度）１
０kg、グリセリン１０kg、及びｎ−ブチルアルコール２
kgを混合した後、スクリュウ式混練機にて混練し、押出
成形用坏土組成物を得た。Example 1 200 kg of titanium oxide, 44 liters of water, ammonium metatungstate solution (concentration of 50% by weight as WO 3 )
70.6 kg, hydroxyethyl cellulose 4 as shape-preserving agent
kg, ammonium stearate emulsion as lubricant (40 wt% concentration as ammonium stearate) 1
0 kg, glycerin 10 kg, and n-butyl alcohol 2
After mixing, the mixture was kneaded with a screw-type kneader to obtain a kneaded clay composition for extrusion molding.
【００２１】実施例２ 実施例１において、滑剤として、ステアリン酸アンモニ
ウムエマルジョンに代えて、マイクロクリスタリンワツ
クスエマルジヨン（固形分４０重量％）１０kgを用いた
以外は、実施例１と同様にして、押出成形用坏土組成物
を得た。Example 2 The procedure of Example 1 was repeated, except that 10 kg of microcrystalline wax emulsion (solid content: 40% by weight) was used instead of the ammonium stearate emulsion as a lubricant. A kneaded clay composition for extrusion molding was obtained.
【００２２】実施例３ 実施例１において、滑剤として、ステアリン酸アンモニ
ウムエマルジョンに代えて、ジグリセリンモノオレエー
ト４kgを用いた以外は、実施例１と同様にして、押出成
形用坏土組成物を得た。Example 3 A clay composition for extrusion molding was prepared in the same manner as in Example 1 except that 4 kg of diglycerin monooleate was used instead of the ammonium stearate emulsion as a lubricant. Obtained.
【００２３】実施例４ 木節粘土３０kg、蛙目粘土３０kg、焼粉４０kg、保形剤
として、ヒドロキシエチルセルロース２kg、滑剤とし
て、ステアリン酸アンモニウムエマルジヨン（ステアリ
ン酸アンモニウムとして４０重量％濃度）５kg及び水３
２リットルを混合した後、スクリュウ式混練機にて混練
し、押出成形用坏土組成物を得た。Example 4 30 kg of Kibushi clay, 30 kg of Frogme clay, 40 kg of calcined powder, 2 kg of hydroxyethylcellulose as a shape-retaining agent, 5 kg of ammonium stearate emulsion (40% by weight as ammonium stearate) as a lubricant and water 3
After mixing 2 liters, the mixture was kneaded with a screw-type kneader to obtain a kneaded clay composition for extrusion molding.
【００２４】この後、直ちにこの坏土組成物を外径２０
mm、内径１０mm、長さ２０mmのリング体に押出成形し
た。これを常温から１００℃に加熱して乾燥させた後、
１０００℃で５時間焼成した。Thereafter, the kneaded clay composition was immediately filled with an outer diameter of 20.
It was extruded into a ring having a diameter of 10 mm, an inner diameter of 10 mm and a length of 20 mm. After heating this from room temperature to 100 ° C and drying it,
It was baked at 1000 ° C. for 5 hours.
【００２５】比較例１ 実施例１において、保形剤として、ヒドロキシエチルセ
ルロースに代えて、メチルセルロース４kgを用いた以外
は、実施例１と同様にして、押出成形用坏土組成物を得
た。Comparative Example 1 A clay composition for extrusion molding was obtained in the same manner as in Example 1 except that 4 kg of methylcellulose was used instead of hydroxyethylcellulose as a shape retaining agent.
【００２６】比較例２ 実施例１において、保形剤として、ヒドロキシエチルセ
ルロースに代えて、メチルセルロース４kgを用い、滑剤
として、ステアリン酸アンモニウムエマルジョンに代え
て、ステアリン酸エマルジヨン（固形分２０重量％）２
０kgを用いると共に、水を３４リットル用いた以外は、
実施例１と同様にして、押出成形用坏土組成物を得た。Comparative Example 2 In Example 1, 4 kg of methylcellulose was used in place of hydroxyethylcellulose as a shape-retaining agent, and emulsion stearate (solid content: 20% by weight) was used as a lubricant in place of ammonium stearate emulsion.
0kg and 34 liters of water,
In the same manner as in Example 1, a clay composition for extrusion molding was obtained.
【００２７】上記実施例１〜４並びに比較例１及び２に
おいて得られた坏土組成物をそれぞれ用いて、直ちに外
径１５０mm角、長さ５００mm、4.２mmピッチの格子状ハ
ニカム体を押出成形した。これを常温から１００℃に加
熱して乾燥させた後、６００℃で３時間焼成した。ま
た、上記実施例及び比較例で得た坏土組成物の見掛け粘
度をキャピラリー式粘度計にて測定し、流れ性の温度依
存性を調べた。結果を図１に示す。測定条件を下に示
す。Using each of the clay compositions obtained in Examples 1 to 4 and Comparative Examples 1 and 2, a lattice-shaped honeycomb body having an outer diameter of 150 mm square, a length of 500 mm and a pitch of 4.2 mm was immediately extruded. did. This was heated from normal temperature to 100 ° C. and dried, and then fired at 600 ° C. for 3 hours. Further, the apparent viscosity of the kneaded clay compositions obtained in the above Examples and Comparative Examples was measured with a capillary viscometer, and the temperature dependence of fluidity was examined. The results are shown in FIG. The measurement conditions are shown below.
【００２８】キャピラリー： 直径２mm×２０mm 測定時間： ２時間 保持時間： 1.５時間 剪断速度： 1.８７５秒-1 測定温度： ３０℃、５０℃及び７０℃ また、得られたハニカム成形体の乾燥収率は、表１に示
す。Capillary: diameter 2 mm × 20 mm Measurement time: 2 hours Holding time: 1.5 hours Shear rate: 1.875 seconds -1 Measurement temperature: 30 ° C., 50 ° C. and 70 ° C. The drying yield is shown in Table 1.
【００２９】[0029]
【表１】 [Table 1]
【００３０】乾燥収率は、〔（Ｎ−ＮD ）／Ｎ〕×１０
０（％）にて求めた。ここに、Ｎは押出成形本数であ
り、ＮD は、押出成形に起因する割れ、歪み、格子欠陥
等の認められる本数である。The drying yield was [(N−N D ) / N] × 10
It was determined at 0 (%). Here, N is an extrusion number, N D is the number of cracks, distortion, are observed lattice defects resulting from the extrusion.
【００３１】[0031]
【発明の効果】以上のように、本発明による押出成形用
坏土組成物は、マイクロクリスタリンワックス、ポリグ
リセリン脂肪酸エステル系ワックス及び脂肪酸アンモニ
ウムから選ばれる少なくとも一種の滑剤と、保形剤とし
てのヒドロキシエチルセルロースとをそれぞれ所定量、
併用してなり、その粘性特性の温度依存性が少なく、か
くして、製品の乾燥収率が大幅に改善され、生産性の向
上に寄与するところが大きい。As described above, the clay composition for extrusion molding according to the present invention comprises at least one lubricant selected from microcrystalline wax, polyglycerin fatty acid ester wax and fatty acid ammonium, and hydroxy as a shape-retaining agent. A predetermined amount of ethyl cellulose and
When used in combination, the temperature dependence of the viscosity characteristics is small, and thus the drying yield of the product is greatly improved, which greatly contributes to the improvement in productivity.
【図１】は、本発明による押出成形用坏土組成物の粘性
特性を比較例としての押出成形用坏土組成物の粘性特性
と共に示すグラフである。FIG. 1 is a graph showing the viscosity characteristics of a kneaded clay composition for extrusion molding according to the present invention, together with the viscosity characteristics of a kneaded clay composition for extrusion molding as a comparative example.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 吉川 嘉之 大阪府堺市戎島町５丁１番地 堺化学工 業株式会社 中央研究所内 (56)参考文献 特開 平４−50158（ＪＰ，Ａ) 特開 平４−310559（ＪＰ，Ａ) 特開 平１−274831（ＪＰ，Ａ) 特開 平２−263757（ＪＰ，Ａ) 特開 平１−111770（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C04B 35/63 - 35/636 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoshiyuki Yoshikawa 5-1-1 Ebisushima-cho, Sakai-shi, Osaka Sakai Chemical Industry Co., Ltd. Central Research Laboratory (56) References JP-A-4-50158 (JP, A) JP-A-4-310559 (JP, A) JP-A-1-2744831 (JP, A) JP-A-2-263757 (JP, A) JP-A-1-111770 (JP, A) (Int.Cl. 7 , DB name) C04B 35/63-35/636
Claims (1)
剤として、マイクロクリスタリンワックス、ポリグリセ
リン脂肪酸エステル系ワックス及び脂肪酸アンモニウム
から選ばれる少なくとも一種１〜１０重量部と、保形剤
として、ヒドロキシエチルセルロース１〜５重量部と、
得られる組成物に可塑性を有せしめる適量の水とを含む
ことを特徴とする押出成形用坏土組成物。Respect 1. A ceramic powder 100 parts by weight, as a lubricant, and at least one 1 to 10 parts by weight selected microcrystalline wax, from polyglycerol fatty acid ester wax and fatty acid ammonium, as Hokatachizai, hydroxyethyl cellulose 1 ~ 5 parts by weight ,
A kneaded clay composition for extrusion molding, comprising an appropriate amount of water for imparting plasticity to the obtained composition .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17946893A JP3283346B2 (en) | 1993-07-20 | 1993-07-20 | Clay composition for extrusion molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17946893A JP3283346B2 (en) | 1993-07-20 | 1993-07-20 | Clay composition for extrusion molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0769711A JPH0769711A (en) | 1995-03-14 |
| JP3283346B2 true JP3283346B2 (en) | 2002-05-20 |
Family
ID=16066380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17946893A Expired - Fee Related JP3283346B2 (en) | 1993-07-20 | 1993-07-20 | Clay composition for extrusion molding |
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| Country | Link |
|---|---|
| JP (1) | JP3283346B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4161652B2 (en) | 2001-10-10 | 2008-10-08 | 株式会社デンソー | Method for manufacturing ceramic structure and method for manufacturing ceramic honeycomb structure |
| JP3667332B2 (en) | 2002-11-21 | 2005-07-06 | 松下電器産業株式会社 | Standard model creation apparatus and standard model creation method |
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- 1993-07-20 JP JP17946893A patent/JP3283346B2/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| JPH0769711A (en) | 1995-03-14 |
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