JPH0625027B2 - Method for manufacturing ceramic molded body - Google Patents
Method for manufacturing ceramic molded bodyInfo
- Publication number
- JPH0625027B2 JPH0625027B2 JP60193337A JP19333785A JPH0625027B2 JP H0625027 B2 JPH0625027 B2 JP H0625027B2 JP 60193337 A JP60193337 A JP 60193337A JP 19333785 A JP19333785 A JP 19333785A JP H0625027 B2 JPH0625027 B2 JP H0625027B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- molded body
- ceramic molded
- molding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Compositions Of Oxide Ceramics (AREA)
Description
【発明の詳細な説明】 本発明はセラミックス成型体の製造方法に関し、詳しく
はセラミックス成型体の製造にあたり、長鎖1,2-グリコ
ール化合物を使用し、成型時のバインダーへの分散性を
改良することを特徴とするセラミックス成型体の製造方
法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a ceramic molded body, and more specifically, in manufacturing a ceramic molded body, a long-chain 1,2-glycol compound is used to improve dispersibility in a binder during molding. The present invention relates to a method for manufacturing a ceramic molded body.
一般にセラミックスは、その材質、用途とも極めて多岐
に渡っており、材料として各種フェライト、アルミナ、
カーボンランダム、窒化珪素、ジルコニア等を用いた場
合は、その粉末に対し一種又は二種以上の有機物からな
るバインダーを添加し混練した後、成型して複雑な形状
や高い寸法精度の成型品を得る。この時添加するバイン
ダーとしては、成型後の脱脂工程において成型品を均一
に収縮させる必要があるが、現在種々のバインダーを用
いてもいるものの無機バインダーへの分散が十分、均一
に行われていないために脱脂工程、焼成工程時に成型品
にひびが入ったり、不均一に収縮するといった工業上大
きな欠点が生ずることが多い。In general, ceramics are extremely diverse in their materials and uses, and as materials, various ferrites, alumina,
When carbon random, silicon nitride, zirconia, etc. are used, a binder consisting of one or more organic substances is added to the powder and kneaded, and then molded to obtain a molded product having a complicated shape and high dimensional accuracy. . As the binder to be added at this time, it is necessary to uniformly shrink the molded product in the degreasing step after molding, but although various binders are currently used, they are not sufficiently and uniformly dispersed in the inorganic binder. Therefore, there are many industrial defects such as cracks in the molded product and non-uniform shrinkage during the degreasing process and the firing process.
本発明者等は、これらの欠点を改良するため鋭意検討を
重ねた結果、原料粉末に対し一種又は二種以上の有機物
からなるバインダーを添加し混練する際に、次の一般式
（Ｉ）を有する長鎖1,2-グリコール化合物をを同時に添
加することにより原料粉末のバインダーへの分散性を著
しく向上させるばかりでなく使用するバインダーの量を
減少させ、高密度で複雑な形状品や高い寸法精度をもっ
た成型品を得ることができ、ひびが入ったり、不均一な
収縮をするといった欠点を改良できることを見出した。The present inventors have conducted extensive studies in order to improve these drawbacks, and as a result, when adding a binder consisting of one or more organic compounds to the raw material powder and kneading, the following general formula (I) is used. By adding the long-chain 1,2-glycol compound at the same time, not only the dispersibility of the raw material powder in the binder is significantly improved, but also the amount of binder used is reduced, resulting in high density and complicated shaped products and high dimensions. It has been found that a molded product with high accuracy can be obtained, and defects such as cracks and uneven shrinkage can be improved.
（式中、Ｒは炭素原子数１２〜２８のアルキル基を示
す。） 以下、上記要旨をもってなる本発明について詳述する。 (In the formula, R represents an alkyl group having 12 to 28 carbon atoms.) Hereinafter, the present invention having the above-mentioned gist will be described in detail.
原料のセラミックスとしては、アルミナ、シリカ、チタ
ニア、ジルコニア、コージマライト、フオルステライ
ト、フェライト等の酸化物系のもの又は炭化珪素、窒化
珪素、サイアロン等の非酸化物系のものなどあらゆるセ
ラミックスに使用できその種類には制限はない。As the raw material ceramics, it is possible to use any ceramics such as oxide-based ones such as alumina, silica, titania, zirconia, cordierite, forsterite and ferrite, or non-oxide-based ones such as silicon carbide, silicon nitride and sialon. There is no limit to the type.
バインダーとしては、例えばワックス、木蝋、ポリエチ
レン、ポリプロピレン、ポリブタジエン、ポリビニルア
ルコール、ポリ酢酸ビニル、メチルセルロース、酢酸セ
ルロース、ポリアクリレート、ポリスチレン、ポリエス
テル、エチレン／酢酸ビニル共重合体、エチンレン／エ
チルアクリレート共重合体等が挙げられる。Examples of the binder include wax, wood wax, polyethylene, polypropylene, polybutadiene, polyvinyl alcohol, polyvinyl acetate, methyl cellulose, cellulose acetate, polyacrylate, polystyrene, polyester, ethylene / vinyl acetate copolymer, ethinylene / ethyl acrylate copolymer, etc. Is mentioned.
本発明で用いられる1,2-グリコールとしては、テトラデ
カンジオール、ヘキサデカンジオール、オクタデカンジ
オール、エイコサンジオール、ドコサンジオール、テト
ラコサンジオール、トリアコンタンジオール等があげら
れる。Examples of 1,2-glycol used in the present invention include tetradecanediol, hexadecanediol, octadecanediol, eicosanediol, docosanediol, tetracosanediol, triacontanediol and the like.
本発明によって焼結体を製造するに際しては、上述のセ
ラミックス粉末にバインダーを添加し、混練する。次に
この混練物を成型体とするのであるが、成型する方法と
しては常法のいかなる方法も採用可能である。例えばプ
レス成型、鋳込成型、ラバープレス成型、圧縮成型、テ
ープ成型、押し出し成型、射出成型等の方法が任意に採
用される。When producing a sintered body according to the present invention, a binder is added to the above-mentioned ceramic powder and kneaded. Next, this kneaded product is formed into a molded body, and any conventional method can be adopted as a molding method. For example, a method such as press molding, cast molding, rubber press molding, compression molding, tape molding, extrusion molding, injection molding or the like is arbitrarily adopted.
以下、実施例によって本発明を説明する。Hereinafter, the present invention will be described with reference to examples.
実施例１ 炭化珪素粉末（１０m2/g）８５重量部に対し、ポリエチ
レンワックス１０重量部及び試料化合物５重量部を加え
た後、ブラベンダープラストミル（１６０℃×６０rp
m）で混練し、そのトルク変化を観察し、炭化珪素の凝
集粒子の分散時間を測定した。又電子顕微鏡にて有機物
への炭化珪素の分散性を観察した。その結果を表−Ｉに
示す。Example 1 After adding 10 parts by weight of polyethylene wax and 5 parts by weight of a sample compound to 85 parts by weight of silicon carbide powder (10 m 2 / g), a Brabender plastomill (160 ° C. × 60 rp) was added.
m) was kneaded, the change in torque was observed, and the dispersion time of the agglomerated particles of silicon carbide was measured. Further, the dispersibility of silicon carbide in the organic substance was observed with an electron microscope. The results are shown in Table-I.
実施例２ 炭化珪素粉末（１０m2/g）１００重量部に対し、ポリス
チレン５．２重量部、ポリブチルメタクリレート８．８
重量部、エチレン／酢酸ビニル共重合体２．３重量部及
び試料化合物３重量部を加えた後、実施例１と同様にし
て試験を行った。その結果を表−２に示す。 Example 2 With respect to 100 parts by weight of silicon carbide powder (10 m 2 / g), 5.2 parts by weight of polystyrene and 8.8 polybutyl methacrylate were used.
After adding 1 part by weight, 2.3 parts by weight of ethylene / vinyl acetate copolymer and 3 parts by weight of the sample compound, a test was conducted in the same manner as in Example 1. The results are shown in Table-2.
実施例３ 窒化珪素粉末（１２m2/g）１００重量部に対し、エチレ
ン／酢酸ビニル共重合体６重量部、ポリブチルメタクリ
レート８．８重量部、ポリエチレンワックス３重量部及
び試料化合物４重量部を加えた後実施例１と同様にして
試験を行った。その結果を表−３に示す。 Example 3 6 parts by weight of an ethylene / vinyl acetate copolymer, 8.8 parts by weight of polybutyl methacrylate, 3 parts by weight of polyethylene wax and 4 parts by weight of a sample compound were added to 100 parts by weight of silicon nitride powder (12 m 2 / g). After the addition, the test was conducted in the same manner as in Example 1. The results are shown in Table-3.
実施例４ 酸化ジルコニア粉末（１１．９m2/g）１００重量部に対
し、エチレン／酢酸ビニル共重合体４重量部、ポリブチ
ルメタクリレート５重量部、ポリエチレンワックス６重
量部及び試料化合物３重量部を加え後実施例１と同様に
して試験を行った。その結果を表−４に示す。 Example 4 To 100 parts by weight of zirconia oxide powder (11.9 m 2 / g), 4 parts by weight of ethylene / vinyl acetate copolymer, 5 parts by weight of polybutyl methacrylate, 6 parts by weight of polyethylene wax and 3 parts by weight of sample compound were added. After the addition, the test was conducted in the same manner as in Example 1. The results are shown in Table-4.
実施例５ 酸化アルミナ粉末（１１．９m2/g）１００重量部に対
し、エチレン／酢酸ビニル共重合体６重量部、ポリブチ
ルメタクリレート６．５重量部、ポリエチレンワックス
３重量部及び試料化合物３重量部を加えた後実施例１と
同様にして試験を行った。その結果を表−５に示す。 Example 5 6 parts by weight of ethylene / vinyl acetate copolymer, 6.5 parts by weight of polybutyl methacrylate, 3 parts by weight of polyethylene wax and 3 parts by weight of a sample compound per 100 parts by weight of alumina oxide powder (11.9 m 2 / g). After adding the parts, the test was conducted in the same manner as in Example 1. The results are shown in Table-5.
実施例６ フェライト(CaO・Fe2O3)１００重量部に対し、エチレン
／エチルアクリレート共重合体１０重量部及び試料化合
物１重量部を加えた後実施例１と同様にして試験を行っ
た。その結果を表−６に示す。 Example 6 After adding 10 parts by weight of an ethylene / ethyl acrylate copolymer and 1 part by weight of a sample compound to 100 parts by weight of ferrite (CaO.Fe 2 O 3 ), the same test as in Example 1 was conducted. The results are shown in Table-6.
Claims (1)
一般式（Ｉ）で表されるグリコール化合物をセラミック
ス粉末１００重量部に対して、０．１〜１０重量部添加
することを特徴とするセラミックス成型体の製造方法。 （式中、Ｒは炭素原子数１２〜２８のアルキル基を示
す。）1. A ceramic material, characterized in that 0.1 to 10 parts by weight of a glycol compound represented by the following general formula (I) is added to 100 parts by weight of a ceramic powder in the production of a ceramic molded body. Molded body manufacturing method. (In the formula, R represents an alkyl group having 12 to 28 carbon atoms.)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60193337A JPH0625027B2 (en) | 1985-09-02 | 1985-09-02 | Method for manufacturing ceramic molded body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60193337A JPH0625027B2 (en) | 1985-09-02 | 1985-09-02 | Method for manufacturing ceramic molded body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6252165A JPS6252165A (en) | 1987-03-06 |
| JPH0625027B2 true JPH0625027B2 (en) | 1994-04-06 |
Family
ID=16306214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60193337A Expired - Lifetime JPH0625027B2 (en) | 1985-09-02 | 1985-09-02 | Method for manufacturing ceramic molded body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0625027B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6906343B2 (en) | 2017-03-30 | 2021-07-21 | 日本碍子株式会社 | Method for manufacturing silicon carbide sintered body |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2727364A1 (en) * | 1977-06-16 | 1979-01-04 | Siemens Ag | METHOD FOR MANUFACTURING CERAMIC SUBSTRATES |
| JPS553366A (en) * | 1978-06-23 | 1980-01-11 | Takeda Chemical Industries Ltd | Composite |
| JPS56114863A (en) * | 1980-02-16 | 1981-09-09 | Murata Manufacturing Co | Ceramic material for extrusion molding |
-
1985
- 1985-09-02 JP JP60193337A patent/JPH0625027B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6252165A (en) | 1987-03-06 |
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