JPS61270251A - Soil composition and ceramic utilizing properties - Google Patents
Soil composition and ceramic utilizing propertiesInfo
- Publication number
- JPS61270251A JPS61270251A JP10844785A JP10844785A JPS61270251A JP S61270251 A JPS61270251 A JP S61270251A JP 10844785 A JP10844785 A JP 10844785A JP 10844785 A JP10844785 A JP 10844785A JP S61270251 A JPS61270251 A JP S61270251A
- Authority
- JP
- Japan
- Prior art keywords
- clay
- weight
- terms
- ceramics
- content
- 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.)
- Granted
Links
- 239000000919 ceramic Substances 0.000 title claims description 30
- 239000000203 mixture Substances 0.000 title claims description 27
- 239000002689 soil Substances 0.000 title 1
- 239000004927 clay Substances 0.000 claims description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 9
- 239000000047 product Substances 0.000 description 24
- 238000010304 firing Methods 0.000 description 12
- 239000002994 raw material Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000010456 wollastonite Substances 0.000 description 3
- 229910052882 wollastonite Inorganic materials 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000010433 feldspar Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical class [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は特殊な性質を有する坏土組成物並びにこの坏土
組成物を焼成して得られる特殊なセラミックスに関する
。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a clay composition having special properties and special ceramics obtained by firing this clay composition.
（従来の技術）
坏土とは、本来、陶磁器などを製造するための原料上を
意味する言葉であるが、ここでは、陶磁器のみＫとられ
れず、セラミックスを製造するための配合原料の意味で
用いる。(Prior art) The word clay originally meant the raw material for manufacturing ceramics, etc., but here, K is not used only for ceramics, but is used to mean the mixed raw material for manufacturing ceramics. use
最近のセラミックスの進歩は著しいものがある。これは
、成形、焼成等の技術が産業全般の技術的進歩を背景に
大きく改善されたことが寄与しているとみることが出来
る。陶磁器はセラミックスの重要な一分野であり、その
製造技術は現在のセラミックス製造技術の根幹として受
は継れている。セラミックスとくにニューセラミックス
の分野においては、原料はあまシ大きな問題になってい
ないようにもみえる。これは、ニューセラミックスで用
いる原料が管理された工場で製造されるものを用いるた
めである。Recent advances in ceramics have been remarkable. This can be attributed to the fact that molding, firing, and other technologies have greatly improved against the backdrop of technological advances in the industry as a whole. Ceramics are an important field of ceramics, and their manufacturing technology continues to be the basis of current ceramic manufacturing technology. In the field of ceramics, especially new ceramics, raw materials do not seem to be a big problem. This is because the raw materials used in new ceramics are manufactured in controlled factories.
（発明が解決しようとする問題点）
しかし、この場合でも、何等かの理由で原料の製造工程
を変更した場合に嬬、最終製品への影響は無視できない
ものがあるとされている。(Problems to be Solved by the Invention) However, even in this case, if the manufacturing process of raw materials is changed for some reason, the impact on the final product cannot be ignored.
陶磁器など、比較的古い範ちゅうのセラミックスの場合
には坏土を如何に調製するかが、現在でも大きな問題と
されている。In the case of relatively old categories of ceramics such as ceramics, how to prepare clay is still a big problem.
しかしながら、陶磁器などで原料の配合を検討する場合
、既に製造される目的物が定、められておシ、その目的
物を支障なく製造するために坏土を調製するのが通常で
ある。この場合、調製の範囲は狭く、製造技術が進歩す
る程、よシ狭い範囲で精密なコントロールを行うように
なるのが通例である。例えば、坏土の化学組成について
みると、その化学組成の変更は焼成条件の変更を必要と
する。このような変更は、同一規格の製品を大量生産す
るという現在の製造方式においては好ましいものでない
ことは明らかである。However, when considering the composition of raw materials for ceramics, etc., the object to be manufactured has already been determined, and clay is usually prepared in order to manufacture the object without any problems. In this case, the range of preparation is narrow, and as manufacturing technology advances, it is customary to perform precise control within a narrower range. For example, when looking at the chemical composition of clay, changing the chemical composition requires changing the firing conditions. It is clear that such a change is not desirable in the current manufacturing system of mass producing products of the same specifications.
さらに原料の形状についてみるといわゆる薄片状の原料
は坏土中で配向し、このことが不均一な焼成収縮などを
引き起こすとされ、このような原料は意識的に用いられ
なかった。従って、急激な乾燥焼成に耐え難い欠点を生
じ易く、自由な造形も行い難く、切削切断加工もし難い
場合があった。Furthermore, regarding the shape of the raw material, so-called flaky raw materials are oriented in the clay, and this is said to cause non-uniform firing shrinkage, etc., so such raw materials were not intentionally used. Therefore, defects that cannot withstand rapid drying and firing are likely to occur, and it is difficult to perform free modeling and cutting.
本発明者等は現在の技術的な考えに囚われず、坏土の性
質そのものを追求した結果、従来の坏土にみられない秀
れた性質を備えた坏土組成の条件を見出し、本発明をな
すにいたった。The present inventors were not bound by current technical ideas, and as a result of pursuing the properties of clay itself, they discovered the conditions for a clay composition with excellent properties not found in conventional clay, and the present invention I came up with this.
（問題を解決するための手段）
本発明は、
（１） 自由水軍の状態に換算して無機物質９０％以
上を含有し、以下の０）乃至に）の全ての条件を満すこ
とを特徴とする坏土組成物。(Means for Solving the Problems) The present invention is characterized in that: (1) it contains 90% or more of inorganic substances in terms of the state of free water, and satisfies all of the following conditions 0) to). A clay composition.
Ｃ） アスペクト値５以上の板状物質を５０％以上含有
する。C) Contains 50% or more of plate-like substances with an aspect value of 5 or more.
（ロ）焼成物に換算して、ＣａＯ１及びＭｇＯの含有率
（重ｆｆｉ％）に次の不等式が成立する。(b) The following inequality holds true for the content of CaO1 and MgO (heavy ffi%) in terms of the fired product.
ＣａＯ−１−Ｍｇ０≧１５
ｅウ 焼成物に換算して５ｉｎｔの含有率（重量％）
が次の不等式を満たす。CaO-1-Mg0≧15 eU Content rate of 5 int (weight%) in terms of fired product
satisfies the following inequality.
８０≧８１へ≧１５ に） ４０重量％以上が４４μｍの篩を通過する。80≧81≧15 ) At least 40% by weight passes through a 44 μm sieve.
（２１（１）の坏土組成物を均一な方向性を持たせるよ
うに成形したのち、５００℃以上の温度で焼成したこと
を特徴とするセラミックス。(Ceramics characterized in that the clay composition of 21(1) is molded to have uniform directionality and then fired at a temperature of 500°C or higher.
である。It is.
本発明に用いる板状物質としては、天然あるいは人工的
に合成した珪灰石、雲母族鉱物、滑石、水酸化マグネシ
ュウムなどがある。Examples of the plate-like material used in the present invention include natural or artificially synthesized wollastonite, mica group minerals, talc, and magnesium hydroxide.
これらの板状物質のアスペクト値は５以上であることが
必要である。アスペクト値がこの値を下廻ると成形性が
低下する傾向が認められる。It is necessary that the aspect value of these plate-like materials is 5 or more. When the aspect value is below this value, there is a tendency for moldability to decrease.
アスペクト値は７以上であることが特に望ましい。板状
物質の含有率は３０％以上であることが必要である。板
状物質の含有率が５０％を下廻ると乾燥時や焼成時の急
加熱により、亀裂を生じるなどの好ましくない現象を生
じる。板状物質の含有率は６０％以上が特に望ましい。It is particularly desirable that the aspect value is 7 or more. The content of the plate-like material needs to be 30% or more. When the content of the plate-like material is less than 50%, undesirable phenomena such as cracking occur due to rapid heating during drying or firing. It is particularly desirable that the content of the plate material be 60% or more.
ＣａＯ，ＭｇＯの含有率（重Ｊｉｉ％）は全般に大きい
方が望ましく、これらの含有率から計算されるＣａＯ−
）−ＭｇＯなる指数の値と成形性ひいてはこの坏土の特
性を利用し友セラミックスの緒特性とは密接な関係があ
る。この値が１５未満の場合には、坏土としての成形性
は大きく低下するばかりでなく、焼成温度が比較的低゛
温度でも多量の液相を生じ、かつこの坏土組成物を焼成
して得られるセラミックスの機械加工性も急低下するに
至る。本発明の効果を上げるためには、前記指数の値が
５０以上であることが特に望ま・しい。It is generally desirable for the content of CaO and MgO (weight Jii%) to be large, and the CaO-
There is a close relationship between the index value of )-MgO and the formability, as well as the properties of the clay ceramics. If this value is less than 15, not only the moldability of the clay composition will be greatly reduced, but also a large amount of liquid phase will be produced even at a relatively low firing temperature, and this clay composition will not be able to be fired. The machinability of the resulting ceramics also deteriorates rapidly. In order to increase the effects of the present invention, it is particularly desirable that the value of the index is 50 or more.
ｓｉｏ、の含有率は本発明の坏土組成物の特性を利用し
焼成して得られるセラミックスの機械加工性に大きな影
響があシ、１５から８０重量％の間にあることが必要で
ある。１５％未満であるとＡム０．などが相対的に増大
し焼成物が硬くなるので機械加工性が低下する。また８
０％を超えても矢張り焼成物の硬度は大となシ機械加工
性は低下するからである。而して成形性機械加工性等の
諸性質から見て特に好ましいのは５ｉｎ２の含有率は２
０％から５０％の間にあることである。The content of sio has a great influence on the machinability of ceramics obtained by firing using the properties of the clay composition of the present invention, and it is necessary that the content is between 15 and 80% by weight. If it is less than 15%, Am0. etc. increase relatively, and the fired product becomes hard, resulting in a decrease in machinability. 8 again
This is because even if it exceeds 0%, the hardness of the fired product will increase and the machinability will decrease. From the viewpoint of various properties such as formability and machinability, it is particularly preferable that the content of 5in2 is 2.
It should be between 0% and 50%.
坏土組成物の粒度も重要な要件であり、４４μｍの篩を
通過する部分が少くとも４０重量％以上あることが成形
性を良好にするために必要である。４０重量％未満であ
ると混線も均一に行われに＜＜、好ましい成形性は得ら
れない。この値は５０重量％以上であることが特に良好
な成形性を得るためには望ましい。The particle size of the clay composition is also an important requirement, and in order to improve moldability, it is necessary that at least 40% by weight of the clay composition pass through a 44 μm sieve. If it is less than 40% by weight, cross-crossing will not occur uniformly and preferred moldability will not be obtained. It is desirable that this value is 50% by weight or more in order to obtain particularly good moldability.
（作 用）
この坏土は組成的にはＣａｂ、 ＭｇＯ，Ｓ ｉｏ２．
Ａ／、０３゜Ｆ ｅ、 ０．を通常９０％以上（焼成
物換算）含む。(Function) The composition of this clay is Cab, MgO, Sio2.
A/, 03°F e, 0. Usually contains 90% or more (calculated as fired product).
その構造の状態は薄片状物質の間に微粒子状の物質がほ
ぼ均一に分散しているものとみられる。The structure appears to be one in which fine particulate matter is almost uniformly dispersed between flaky matter.
この構造は各原料がはｙ混練された段階で形成されるの
で坏土は混練されやすくな）、一層均一なものとなると
思われる。かつ、焼成のための成形の段階においては、
薄片状物の存在のために剪断力が比較的大となるため、
成形の途中でくずれ落ちる等の不都合がなくなり、同時
に微粒状物の存在によシ、潤活性も与えられるため成形
が意のま＼に自由に行われやすくなる等成形性がよくな
るものと考えられる。更にまた成形物が焼成物とされた
状態においても前述の薄片状物は一般に硬度は低目の性
状を呈することが多いため機械加工性も良好となるもの
と思われる。This structure is formed at the stage where each raw material is kneaded, so the clay is easier to knead), and it is thought that it becomes more uniform. And, at the stage of forming for firing,
Because the shear force is relatively large due to the presence of flakes,
It is thought that inconveniences such as falling off during molding are eliminated, and at the same time, the presence of fine particles provides lubricating activity, making it easier to mold freely as desired, improving moldability. . Furthermore, even when the molded product is a fired product, the above-mentioned flaky material generally exhibits a property of low hardness, so it is thought that machinability is also good.
坏土の調製は配合する原料をドレン機などで混合し適度
な粘性の出るよう水量を調節することによって行なわれ
る。The clay is prepared by mixing the raw materials in a drain machine or the like, and adjusting the amount of water to obtain the appropriate viscosity.
本発明の坏土組成物は均一な方向性を持たせることＫよ
シ、さらに秀れたセラミックスを製造することが出来る
。均一な方向性を持たせる成形法としては、ドレン機に
よる押し出しなどの比較的簡単な方法によって行うこと
が出来る。The clay composition of the present invention not only has uniform directionality, but also makes it possible to produce superior ceramics. A relatively simple method such as extrusion using a drain machine can be used to provide uniform directionality.
この方法によって角柱、パイプなどのセラミックス製品
を製造することが出来る。本発明の坏土組成物と特開昭
５８−７６２０８のセラミックス板を製造する方法を組
合せると、とくに秀れたセラミックス板を製造すること
が出来る。また、スリップキャスティング等の従来の方
法を用いることもできる。Ceramic products such as prisms and pipes can be manufactured using this method. By combining the clay composition of the present invention with the method for producing ceramic plates disclosed in JP-A-58-76208, particularly excellent ceramic plates can be produced. Also, conventional methods such as slip casting can be used.
本発明の坏土組成物をセラミックス化する温ミックスに
機械加工性を付与する上からもとくに望しい。It is particularly desirable from the viewpoint of imparting machinability to the hot mix for forming the clay composition of the present invention into ceramics.
以下実施例によシ本発明の詳細な説明する。The present invention will be explained in detail by way of examples below.
実施例−１
アスペクト値ｚ２の天然のワラストナイト６０％に木節
粘土３５％長石５％の組成物をつくシ、これに水２０％
を配合して押出成形用の坏土を調製した。この坏土の自
由水零の状態に換算した無機物質量率は９９％以上であ
シ、ＣａＯ＋ ＭｇＯの値は約５４．５％であシ、Ｓｉ
Ｏ２の含有率は４５．０％であった。またこの坏土を水
で稀釈し、４４μｍの篩に掛けたところ、篩上は自由水
零の状態に換算して１５％であった。Example-1 A composition of 35% Kibushi clay and 5% feldspar was added to 60% natural wollastonite with aspect value z2, and 20% water was added to this.
A clay for extrusion molding was prepared by blending the following. The amount of inorganic substances converted to the free water state of this clay is 99% or more, the value of CaO + MgO is about 54.5%, Si
The O2 content was 45.0%. When this clay was diluted with water and passed through a 44 μm sieve, the amount of free water on the sieve was 15%, calculated as zero free water.
この坏土を真空押し出し機によシ外側直径２２０■、肉
厚２０−の円筒状に押し出すときの圧力は３６ ＫＪ！
／ｃｍ”であった。この円筒状に押し出された成形物を
縦に切開き、ロールで圧延して厚さ３■巾６０傷長さ１
ｍの板状となしたところ、成形性が従来になく良いこと
がわかった。The pressure when extruding this clay into a cylindrical shape with an outer diameter of 220 mm and a wall thickness of 20 mm using a vacuum extruder is 36 KJ!
/cm". This cylindrical extruded molded product was cut vertically and rolled with a roll to a thickness of 3 cm, width of 60 scratches, and length of 1.
When it was made into a plate shape of m, it was found that the moldability was better than ever.
この成形物の破断面を顕微鏡で観察したところ、加えた
ワラストナイトの７０％以上が板の表面にほぼ平行にな
るように配向していることが認められた。次いで板の両
面を赤外線加熱装置を用いて１０分間で自由水１％以下
の状態にまで乾燥した。乾燥物は亀裂も全くなく強さも
大きくハンドリングも容易であった。更にこの乾燥物を
ローラーハース炉で７０℃／分の温度で１１５０℃まで
加熱したところ、乾燥物と同様に、亀裂の発生もなく、
得られた焼成物は曲げ強度が５８５±１５ 秘−２であ
シ、叩くと金属音を発し、かつ通常の材木用鋸で自由な
形に切断することもできた。When the fractured surface of this molded product was observed under a microscope, it was found that more than 70% of the added wollastonite was oriented almost parallel to the surface of the plate. Next, both sides of the plate were dried using an infrared heating device for 10 minutes until the free water content was 1% or less. The dried product had no cracks and was strong and easy to handle. Furthermore, when this dried product was heated to 1150°C at a temperature of 70°C/min in a roller hearth furnace, there were no cracks, just like the dried product.
The resulting fired product had a bending strength of 585±15 Hi-2, made a metallic sound when tapped, and could be cut into any shape with a regular lumber saw.
比較例
自由水茎の状態に換算して重量で粘土５５％、長石５５
％、石英１０弧、従−ｐテｃａｏ＋Ｍｇｏは５％以下で
ある組成物をつ＜シ、これに水２０％を配合して坏土を
調製し九〇この坏土を実施例−１と同様に切開き圧延し
た。この組成の成形物は一般陶磁器質組成の成形物に近
似のものであるが、圧延成形の際の剪断応力によって大
きい亀裂が発生し、厚さ５曽の生地を成形する事は出来
なかった。そこでこのものを厚さ７ｍ以上として成形し
、加熱速度を２０℃／分以下にして乾燥したところ、亀
裂のない乾燥物ができたけれども、矢張シ壊れ易くハン
ドリング性は実施例−１のものに比較してはるかに劣っ
た。Comparative example Clay 55%, feldspar 55% by weight in terms of free water stem state
%, quartz 10 arc, sub-ptecao + Mgo is less than 5%. Add 20% water to this to prepare clay. 90 This clay was prepared in the same manner as Example-1 It was incised and rolled. The molded product with this composition is similar to the molded product with a general ceramic composition, but large cracks occurred due to the shear stress during rolling, and it was not possible to mold a dough with a thickness of 5 mm. Therefore, when this product was molded to a thickness of 7 m or more and dried at a heating rate of 20°C/min or less, a dry product with no cracks was obtained, but it was easily broken and the handling properties were the same as in Example 1. was much inferior compared to.
（発明の効果）
以上詳細に説明したところによシ、本発明の効果は次の
通りである。(Effects of the Invention) As described above in detail, the effects of the present invention are as follows.
（１）本発明の坏土は従来の坏土に見られない、配向性
を持った構造を基本とするものであり、との配向が坏土
自体の特性或はその特性を利用する成形乾燥焼成におい
ても、また焼成して得られるものにおいても特徴を発揮
するものである。(1) The clay of the present invention is based on a structure with orientation, which is not seen in conventional clay, and the orientation can be achieved by the properties of the clay itself or by forming and drying using the properties. It exhibits its characteristics both in firing and in the products obtained by firing.
（２）本発明の坏土組成物は前記説明したサンドイッチ
状微構造のために混線均一化の容易性並に良好な成形性
を有する特長がある。(2) The clay composition of the present invention has the above-mentioned sandwich-like microstructure, which makes it easy to make the crosstalk uniform and has good moldability.
（３） またその成形性の良さによって、成形中に端
部がかけたり、亀裂が入ったシ、全体として変形したシ
することがなく、自由な造形を行うことができる。(3) Also, due to its good moldability, it can be freely shaped without the edges becoming loose, cracking, or deforming as a whole during molding.
（４）本発明坏土は上記のような特長を有するので、急
激な乾燥、焼成に耐えて、亀裂、変形のない焼成品、セ
ラミックスを得ることができるという効果を奏する。(4) Since the clay of the present invention has the above-mentioned features, it has the effect of being able to withstand rapid drying and firing and producing fired products and ceramics without cracks or deformation.
（５） 本発明坏土組成物の特性を利用したセラミッ
クス焼成物として、上記の特長によって亀裂変形なく３
箇以下の、従来には見られない超薄形かつ大形の板状製
品を得ることができる。(5) As a fired ceramic product utilizing the properties of the clay composition of the present invention, the above features prevent cracking and deformation.
It is possible to obtain ultra-thin and large-sized plate-shaped products that have not been seen before.
（６）本発明の坏土組成物差にその特性を利用したセラ
ミックスとして、成形性良く、亀裂変形なく自由な造形
乾燥焼成ができる故に、創作者の意のま＼の造形芸術作
品も特に作シ易いという効果も奏し得る。(6) As a ceramic that takes advantage of the characteristics of the clay composition of the present invention, it has good moldability and can be freely shaped, dried and fired without cracking or deforming, so it is especially possible to create a figurative work of art according to the creator's wishes. It can also have the effect of being easy to use.
（７） 本発明に係る前記セラミックスは更に１２０
０℃以上の耐熱性を有し、かつ気孔率５％以上になるよ
うに成形焼成されたものは簡単な工具を用いて切断切削
などの加工が容易に可能となるので、不燃薄板はもとよ
り、建設をはじめとし、工業用にまた家庭用に広範な需
要を期待することができる。(7) The ceramic according to the present invention further includes 120
Products that have heat resistance of 0℃ or higher and are molded and fired to have a porosity of 5% or higher can be easily processed by cutting using simple tools, so they can be used not only as noncombustible thin plates, but also as non-combustible thin plates. We can expect a wide range of demand for construction, industrial use, and household use.
Claims (2)
を含有し、以下の（イ）乃至（ニ）の全ての条件を満す
ことを特徴とする坏土組成物。 （イ）アスペクト値５以上の板状物質を３０％以上含有
する。 （ロ）焼成物に換算して、ＣａＯ及びＭｇＯの含有率（
重量％）に次の不等式が成立する。 ＣａＯ＋ＭｇＯ≧１５ （ハ）焼成物に換算してＳｉＯ＿２の含有率（重量％）
が次の不等式を満たす。 ８０≧ＳｉＯ＿２≧１５ （ニ）４０重量％以上が４４μｍの篩を通過する。(1) A clay composition containing 90% or more of an inorganic substance in terms of free water content and satisfying all of the following conditions (a) to (d). (a) Contains 30% or more of plate-like substances with an aspect value of 5 or more. (b) Content of CaO and MgO in terms of fired product (
The following inequality holds true for weight%). CaO+MgO≧15 (c) Content rate of SiO_2 (weight%) in terms of fired product
satisfies the following inequality. 80≧SiO_2≧15 (d) 40% by weight or more passes through a 44 μm sieve.
を含有し、以下の（イ）乃至（ニ）の全ての条件を満た
すことを特徴とする坏土組成物を均一な方向性を持たせ
るように成形したのち、５００℃以上の温度で焼成した
ことを特徴とするセラミックス。 （イ）アスペクト値５以上の板状物質を３０％以上含有
する。 （ロ）焼成物に換算して、ＣａＯ及びＭｇＯの含有率（
重量％）に次の不等式が成立する。 ＣａＯ＋ＭｇＯ≧１５ （ハ）焼成物に換算してＳｉＯ＿２の含有率（重量％）
が次の不等式を満たす。 ８０≧ＳｉＯ＿２≧１５ （ニ）４０重量％以上が４４μｍの篩を通過する。(2) A clay composition characterized by containing 90% or more of inorganic substances in terms of free water content and satisfying all of the following conditions (a) to (d) in a uniform direction. Ceramics characterized by being molded to give it properties and then fired at a temperature of 500°C or higher. (a) Contains 30% or more of plate-like substances with an aspect value of 5 or more. (b) Content of CaO and MgO in terms of fired product (
The following inequality holds true for weight%). CaO+MgO≧15 (c) Content rate of SiO_2 (weight%) in terms of fired product
satisfies the following inequality. 80≧SiO_2≧15 (d) 40% by weight or more passes through a 44 μm sieve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60108447A JPH075348B2 (en) | 1985-05-22 | 1985-05-22 | Kneaded clay composition and ceramics utilizing its characteristics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60108447A JPH075348B2 (en) | 1985-05-22 | 1985-05-22 | Kneaded clay composition and ceramics utilizing its characteristics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61270251A true JPS61270251A (en) | 1986-11-29 |
| JPH075348B2 JPH075348B2 (en) | 1995-01-25 |
Family
ID=14485011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60108447A Expired - Lifetime JPH075348B2 (en) | 1985-05-22 | 1985-05-22 | Kneaded clay composition and ceramics utilizing its characteristics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH075348B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05310465A (en) * | 1992-05-08 | 1993-11-22 | Inax Corp | Production of extruded molded article of ceramics |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53120708A (en) * | 1977-03-31 | 1978-10-21 | Tanto Kk | Process for making ceramics which show low shrinkage at sintering and maintain high dimensional precision |
| JPS5876208A (en) * | 1981-11-02 | 1983-05-09 | 居上 英雄 | Manufacture of porcelain board |
| JPS5921571A (en) * | 1982-07-23 | 1984-02-03 | 株式会社イナックス | Manufacture of ceramic tile |
-
1985
- 1985-05-22 JP JP60108447A patent/JPH075348B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53120708A (en) * | 1977-03-31 | 1978-10-21 | Tanto Kk | Process for making ceramics which show low shrinkage at sintering and maintain high dimensional precision |
| JPS5876208A (en) * | 1981-11-02 | 1983-05-09 | 居上 英雄 | Manufacture of porcelain board |
| JPS5921571A (en) * | 1982-07-23 | 1984-02-03 | 株式会社イナックス | Manufacture of ceramic tile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05310465A (en) * | 1992-05-08 | 1993-11-22 | Inax Corp | Production of extruded molded article of ceramics |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH075348B2 (en) | 1995-01-25 |
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