JPS63176359A - Manufacture of zirconia green sheet - Google Patents

Manufacture of zirconia green sheet

Info

Publication number
JPS63176359A
JPS63176359A JP62008693A JP869387A JPS63176359A JP S63176359 A JPS63176359 A JP S63176359A JP 62008693 A JP62008693 A JP 62008693A JP 869387 A JP869387 A JP 869387A JP S63176359 A JPS63176359 A JP S63176359A
Authority
JP
Japan
Prior art keywords
weight
parts
added
polyvinyl butyral
kneaded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62008693A
Other languages
Japanese (ja)
Inventor
裕二 永井
江島 光一郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TYK Corp
Original Assignee
TYK Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TYK Corp filed Critical TYK Corp
Priority to JP62008693A priority Critical patent/JPS63176359A/en
Publication of JPS63176359A publication Critical patent/JPS63176359A/en
Pending legal-status Critical Current

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  • 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) この発明は、各種のセラミックス造形物、とシわけグリ
ーンシートの状態で折曲げ加工などを施して複雑形を得
る造形物に利用される高い強度と柔軟性を備えたジルコ
ニアグリーンシートの製?i方法に関するものである。
[Detailed Description of the Invention] (Field of Industrial Application) This invention is applicable to various ceramic molded products and molded products that obtain complex shapes by bending the separated green sheets. Made of zirconia green sheet with strength and flexibility? This relates to the i method.

(従来の技術) 従来、各種のセラミック製品に利用されるグIJ we
ン7−トの製造方法は1押出し成形法あるいはドクター
ブレード法が一般的である。そして押出し成形法では、
セラミックス原料にポリビニルアルコ−/L/#メチル
セルロースなどの可塑剤と水とによシスフリー素地を作
シ、フィルタープレスにより水分を絞シと夛ケーキ状に
し、真空押出し成形機によシ押出し成形されている。ま
たドクターブレード法は、セラミックス原料にポリエチ
レングリコ−A/などの可塑剤tグリセリンtオレイン
酸などの分散剤tアルコールラドルエンーアセトンなど
の有機溶剤そしてポリビニルアルコール、メチルセルロ
ースなどの結合剤を分散混合したスラリーをベルト上に
流し出し、ドクターブレードで所要の厚みにした後、有
機溶剤を揮発乾燥させ、ベルトから剥がし、グリーンシ
ートを得ている。
(Conventional technology) Conventionally, IJ we used for various ceramic products.
The general method for producing the 7-t is an extrusion molding method or a doctor blade method. And in the extrusion molding method,
A cis-free base material is made by combining ceramic raw materials with water and a plasticizer such as polyvinyl alcohol/L/# methyl cellulose.The water is squeezed out using a filter press and the cake is formed into a cake shape, which is then extruded using a vacuum extrusion molding machine. There is. In addition, the doctor blade method involves dispersing and mixing ceramic raw materials with a plasticizer such as polyethylene glycol-A, a dispersant such as glycerin, oleic acid, an organic solvent such as alcohol radolene-acetone, and a binder such as polyvinyl alcohol or methylcellulose. After pouring the slurry onto the belt and making it to the desired thickness with a doctor blade, the organic solvent is evaporated and dried, and the belt is peeled off to obtain a green sheet.

(発明が解決しようとする間雇点) しかるに前記の従来よりのセラミックグリーンシートの
製造において、押出し成形法では1本来、棒状やパイプ
状の物に適しており、薄板状に押出した場合、グリーン
シートの柔軟性p延展性が劣るので歪みが発生しやすく
、得られたシートに強度的な欠陥が起こシやすかった。
(The labor problem to be solved by the invention) However, in the conventional production of ceramic green sheets mentioned above, the extrusion molding method is originally suitable for rod-shaped or pipe-shaped objects, and when extruded into thin plate shapes, green Since the sheet had poor flexibility and ductility, distortion was likely to occur, and the obtained sheet was likely to have strength defects.

またドクターブレード法は、極端に薄いセラミックシー
トが製造可能なことやベルトによシ支見られた状態で乾
燥固化するため歪みが入pに<<量産に適するので多用
されている。しかしこれらのセラミックグリーンシート
は電子回路用基板や工0パッケージなどの単純物を専門
とし、本発明の目的とする複雑形の造形物への折υ曲げ
加工などには柔軟か可塑性の点で不向きであったっ この発明は、従来の製造方法では困燕であったグリーン
シートの状態で折曲げ加工などを施し、複雑形状の造形
物の製造を可能とし1折曲げ加工後の焼成後にも充分強
度を発現できるグリーンシートの提供を目的とするもの
である。
In addition, the doctor blade method is widely used because extremely thin ceramic sheets can be produced and because it is dried and solidified while being supported by a belt, it is suitable for mass production without distortion. However, these ceramic green sheets are specialized for simple objects such as electronic circuit boards and zero-process packages, and are not suitable for bending into complex shaped objects, which is the purpose of the present invention, due to their flexibility or plasticity. This invention enables the production of complex-shaped objects by bending green sheets, which was difficult to achieve with conventional manufacturing methods, and maintains sufficient strength even after firing after one bending process. The purpose is to provide a green sheet that can express the following.

(間頂点を解決するための手段) この目的を達成させるために、この発明は次のような構
成としである。子なわちセラミックス材は平均粒径が7
μm以下のもので、しかも焼成後極めて高強度性を発揮
する共沈法のジルコニア粉末が適用される。
(Means for solving intervening vertices) In order to achieve this object, the present invention has the following configuration. In other words, the average particle size of the ceramic material is 7.
Co-precipitated zirconia powder is used, which has a particle diameter of less than μm and exhibits extremely high strength after firing.

このジルコニア粉末に、ポリエチレングリコールpジオ
クチル7タレート、ジブチルフタレートなどの可塑材と
、ソルビタントリオレートなどの分散材−そしてトリク
ロルエチレン−エタ/−ルッメタノールpブタノールー
メチルエチルケトンなどの有機溶剤を加えて混練する。
To this zirconia powder, a plasticizer such as polyethylene glycol p-dioctyl 7-talate or dibutyl phthalate, a dispersant such as sorbitan triolate, and an organic solvent such as trichlorethylene-ethyl-lumethanol p-butanol-methyl ethyl ketone are added and kneaded. do.

この混合物に結合剤としてポリビニルブチラール(以下
PVBと呼ぶ)溶液を用いる。まず重合度が100以上
で500未満の低重合度PVB溶液を前記シフvコニア
粉末100重量部に対してPVE単味に換算して2〜1
0重量部添加し一次混練する。
A polyvinyl butyral (hereinafter referred to as PVB) solution is used as a binder in this mixture. First, a low polymerization degree PVB solution having a polymerization degree of 100 or more and less than 500 is added to 100 parts by weight of the Schiff V Konia powder in terms of 2 to 1
Add 0 parts by weight and knead first.

この−次混練は、低重合度pvBfr、用いてジルコニ
ア粉末粒子金力−に分散させるためである。
This second kneading is for dispersing the zirconia powder particles using a low degree of polymerization pvBfr.

次にこの一次混練混合物に、重合度が500〜1000
未満の中重合度PVB溶液を一次混練と同様にジルコニ
ア粉末100重量部に対してPVB単味に換算して2〜
10重量部添加し二次混練する。
Next, this primary kneaded mixture has a polymerization degree of 500 to 1000.
Similarly to the primary kneading, a medium polymerization degree PVB solution of less than
Add 10 parts by weight and perform secondary kneading.

この二次混練によって均一分散した一次混練物の可塑性
強度が向上し、次の三次混練の中間的役割を果たしてい
る。
This secondary kneading improves the plastic strength of the uniformly dispersed primary kneaded product, and plays an intermediate role in the subsequent tertiary kneading.

そしてこの二次混線物に、重合度が1000以上の高重
合度pvB溶液をジルコニア粉末100重量部に対して
PVB単味に換算して2〜iox量部添加し三次混練を
する。この三次混線は、高重合度PVBによって強可塑
性がもたらされる。
Then, a high degree of polymerization pvB solution having a degree of polymerization of 1000 or more is added to this secondary mixed material in an amount of 2 to iox in terms of PVB alone per 100 parts by weight of zirconia powder, and tertiary kneading is performed. This tertiary crosstalk is brought about by strong plasticity due to the high polymerization degree of PVB.

この以上の混練スラリー全ドクターブレード法でシート
成形して、この発明のジルコニアグリーンシートが得ら
れる。
The above-mentioned kneaded slurry is formed into a sheet by a full doctor blade method to obtain the zirconia green sheet of the present invention.

なお、前述の各重合度EVE溶液の添加量であるPVB
単味換算で2〜10重借部、l−1−frのけ一2重量
部未満では、いずれも結合剤として分散性−可塑性など
の性質がでない。また10重量部超ではグリーンシート
の焼成においてキレンの発生要因となるために限定され
る◇ この発明の特徴である各重合度の異なるPVEを低から
中、そして高へと順次添加することがポイントで、この
順番を変えると1ジルコニア粒子の分散性や可塑性が充
分でなく、高強度で柔軟性のシートにならない。また低
PVBのみの添加では粒子分散は良いが成形後の強度が
出ない・そして高PVBのみの添加では、強度はあるが
分散性が悪く、焼成後にワレやすい。さらに中PVBの
みの添加は、分散性9強反ともいずれも不充分である。
In addition, the amount of PVB added in each of the above-mentioned polymerization degree EVE solutions
If the amount is less than 2 to 10 parts by weight or less than 2 parts by weight on the scale of l-1-fr, the binder will not have properties such as dispersibility and plasticity. In addition, if it exceeds 10 parts by weight, it is limited because it becomes a cause of generation of chilene during firing of the green sheet ◇ The key point of this invention is to sequentially add PVE with different degrees of polymerization from low to medium to high. If this order is changed, the dispersibility and plasticity of the zirconia particles will not be sufficient, and a sheet with high strength and flexibility will not be obtained. Furthermore, if only low PVB is added, particle dispersion is good, but strength after molding is not achieved, and if only high PVB is added, although strength is obtained, dispersibility is poor and cracking occurs easily after firing. Furthermore, when only medium PVB is added, the dispersibility is insufficient in all cases, even when the dispersibility is 9 or more.

(作用) この発明によるジルコニアグリーンシートはきわめて柔
軟−可塑性があるため、おシ紙で作られるような折シ鶴
やカプトなどの複雑形状の加工ができ焼結後も充分な強
度が得られる。
(Function) Since the zirconia green sheet according to the present invention is extremely flexible and plastic, it can be processed into complex shapes such as origami paper cranes and caputo, and has sufficient strength even after sintering.

(実施例) この発明の実施例を以下説明するが、この発明はこれに
限局されるものではない。
(Embodiments) Examples of the present invention will be described below, but the present invention is not limited thereto.

実施例/。Example/.

平均粒径a3μmの共沈法ジルコニア’L’Z−JY(
東洋曹達社製) 100重量部に対し1分散剤としてソ
ルビタントリオレート/重量部?可塑剤としてジブチル
7タレートに重量部!溶剤としてメチルエチルケトン:
メチルアルコール;ジプチルアルコール(3;、2;/
)の混合溶剤20重量部をボールミルに入れ10時間混
練後、重合度’−200のポリビニルブチフール樹脂≠
重置部を上記混合溶液10重量部に完全に溶解し、上記
ボールミルに添加後、10時間混練する。次に重合度が
−ざOOのポリビニールブチラール樹脂に重量部を上記
混合溶液20重量部に溶解し、ボールミルに添加、10
時間混練し、さらに重合度’ −/100のポリビニル
ブチラール樹脂を混合溶液20重全部に溶解し、ボール
ミルに添加、≠g時間混練した。このスラリーヲ真空脱
泡により粘度20000 (JPSに調茅し、ドクター
ブレード法によシ、シート成形。
Co-precipitated zirconia 'L'Z-JY (
(manufactured by Toyo Soda Co., Ltd.) Sorbitan triolate/part by weight as a dispersant per 100 parts by weight? Parts by weight of dibutyl 7 tallate as a plasticizer! Methyl ethyl ketone as solvent:
Methyl alcohol; diptyl alcohol (3;, 2;/
) was put into a ball mill and kneaded for 10 hours to form a polyvinyl butyfur resin with a polymerization degree of '-200.
The overlapping portion was completely dissolved in 10 parts by weight of the mixed solution, added to the ball mill, and kneaded for 10 hours. Next, parts by weight of polyvinyl butyral resin having a degree of polymerization of -ZOO were dissolved in 20 parts by weight of the above mixed solution, and added to a ball mill for 10 minutes.
The mixture was kneaded for an hour, and then a polyvinyl butyral resin having a degree of polymerization of '-/100 was dissolved in all 20 parts of the mixed solution, added to a ball mill, and kneaded for ≠g hours. This slurry was vacuum degassed to a viscosity of 20,000 (JPS) and formed into a sheet using the doctor blade method.

乾燥して厚さ0.3m+のグリーンシートを得た。得ら
れたグリーンシートは、打抜き加工などに十分な強度上
もち、乙O×60訪に打抜いたシートを用いて折鶴をつ
くることもできるような柔軟性を示した。
A green sheet with a thickness of 0.3 m+ was obtained by drying. The obtained green sheet had sufficient strength for punching, etc., and was flexible enough to be used to make origami cranes using the sheet punched to a size of 60 mm.

またこれ’fc3!;O0cで十分脱脂後、/弘6 o
 Oaで焼成した焼結体は割れもなく、高い強度を示し
た。
This is 'fc3 again! ; After sufficient degreasing with O0c, /Hiro6 o
The sintered body fired with Oa had no cracks and exhibited high strength.

実施例2 実施例1と同様にT Z 3 Y 790重量部・ソル
ビタントリオレート1重量部= DEP10重量部を混
合溶剤20重量部をボールミルにて10時間混練後、重
合度、l−200のポリビニルブチルブチラール樹脂を
混合溶液1o重全部に溶層し、添加110時間混練した
。さらに重合度n−100のポリビニルブチラール樹脂
3重量部を溶剤lON量部置部解し、添加、5時間混合
し、n−タOOのポリビニルブチラール樹脂3重量部を
溶剤lON量部置部解し添加、j時間混合し、これに−
−/!;00のポリビニルブチラール樹脂と溶剤20重
量部に溶解し、添加し、弘g時間混練して得られたスラ
リーを真空脱泡によ’) 200000PSの粘度とし
、ドクターブレード法によシシートを成形し、0.3t
zのグリーンシートを得た。得られたグリーンシートは
実施例1と同様に十分な強度と、柔軟性があシ、焼成物
も高強度を示した。
Example 2 As in Example 1, 790 parts by weight of T Z 3 Y, 1 part by weight of sorbitan triolate = 10 parts by weight of DEP, and 20 parts by weight of a mixed solvent were kneaded in a ball mill for 10 hours, resulting in polyvinyl having a degree of polymerization of 1-200. Butyl butyral resin was added to 10 g of the mixed solution and kneaded for 110 hours. Further, 3 parts by weight of polyvinyl butyral resin with a degree of polymerization of n-100 was partially dissolved in the amount of solvent 1ON, added and mixed for 5 hours, and 3 parts by weight of polyvinyl butyral resin with n-taOO was partially dissolved in the amount of solvent 1ON. Add, mix for j hours, to this -
-/! ;00 polyvinyl butyral resin and 20 parts by weight of a solvent were added and kneaded for a long time.The resulting slurry was vacuum defoamed to a viscosity of 200,000 PS, and a sheet was formed by a doctor blade method. ,0.3t
A green sheet of Z was obtained. The obtained green sheet had sufficient strength and flexibility as in Example 1, and the fired product also showed high strength.

(発明の効果) この発明によると、結合剤のポリビニルブチラール樹脂
の低重合度を中重合度・高重合度を順次添加混練するこ
とによってジルコニア粉粒の均一分散化と可塑性強度が
向上し、アルミナ質薄板に比べ2〜3倍の強度を示すも
のである。従ってグリーンシートの折曲げ加工ができ、
複雑な造形物の加工に充分適用できるものである。
(Effects of the invention) According to this invention, uniform dispersion and plastic strength of zirconia powder particles are improved by sequentially adding and kneading polyvinyl butyral resin with a low degree of polymerization, medium degree of polymerization, and high degree of polymerization of polyvinyl butyral resin as a binder. It shows 2 to 3 times the strength compared to thin sheets. Therefore, the green sheet can be bent,
It is fully applicable to processing complex objects.

Claims (1)

【特許請求の範囲】[Claims] 平均粒径が1μm以下のジルコニア粉末に可塑剤、分散
剤、有機溶剤を加えて混練した混合物に、重合度が10
0以上で500未満の低重合度ポリビニルブチラール溶
液を、前記ジルコニア粉末100重量部に対してポリビ
ニルブチラール単味に換算して2〜10重量部を添加一
次混練し、次いで重合度が500以上で1000未満の
中重合度ポリビニルブチラール溶液を前記ジルコニア粉
末100重量部に対してポリビニルブチラール単味に換
算して2〜10重量部を添加二次混練し、そしてさらに
重合度が1000以上の高重合度ポリビニルブチラール
溶液を前記ジルコニア粉末重量部に対してポリビニルブ
チラール単味に換算して2〜10重量部を添加し、三次
混練したスラリーを用いてドクターブレード法シート成
形したことを特徴とするジルコニアグリーンシートの製
造方法。
A mixture of zirconia powder with an average particle size of 1 μm or less added with a plasticizer, a dispersant, and an organic solvent and kneaded with a polymerization degree of 10
A polyvinyl butyral solution with a low polymerization degree of 0 or more and less than 500 is added and kneaded in an amount of 2 to 10 parts by weight in terms of polyvinyl butyral alone per 100 parts by weight of the zirconia powder, and then a polyvinyl butyral solution with a low polymerization degree of 500 or more and less than 1000 is added and kneaded. 2 to 10 parts by weight of polyvinyl butyral alone is added to 100 parts by weight of the zirconia powder of a solution of polyvinyl butyral with a medium degree of polymerization of less than A zirconia green sheet characterized in that a butyral solution is added to the zirconia powder in an amount of 2 to 10 parts by weight in terms of polyvinyl butyral alone, and the tertiary kneaded slurry is formed into a sheet by a doctor blade method. Production method.
JP62008693A 1987-01-16 1987-01-16 Manufacture of zirconia green sheet Pending JPS63176359A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62008693A JPS63176359A (en) 1987-01-16 1987-01-16 Manufacture of zirconia green sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62008693A JPS63176359A (en) 1987-01-16 1987-01-16 Manufacture of zirconia green sheet

Publications (1)

Publication Number Publication Date
JPS63176359A true JPS63176359A (en) 1988-07-20

Family

ID=11700001

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62008693A Pending JPS63176359A (en) 1987-01-16 1987-01-16 Manufacture of zirconia green sheet

Country Status (1)

Country Link
JP (1) JPS63176359A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03170360A (en) * 1989-11-30 1991-07-23 Taiyo Yuden Co Ltd Composition for ceramic green sheet
JPH06184604A (en) * 1991-11-08 1994-07-05 Mitsubishi Materials Corp Plastic composition and metallic articles obtained from this composition and their production
JP2005213064A (en) * 2004-01-27 2005-08-11 Nitta Ind Corp Binder for forming ceramic, green body, ceramic formed body and ceramic joining method
JP2009510987A (en) * 2005-09-30 2009-03-12 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Electric motor with hammer brush
JP2011219350A (en) * 2010-03-24 2011-11-04 Sekisui Chem Co Ltd Method for producing slurry composition
JP2011219349A (en) * 2010-03-24 2011-11-04 Sekisui Chem Co Ltd Method for producing slurry composition
JP2011231000A (en) * 2010-04-08 2011-11-17 Sekisui Chem Co Ltd Method of manufacturing slurry composition
JP4909435B2 (en) * 2009-03-31 2012-04-04 積水化学工業株式会社 Method for producing slurry composition
JP2012072326A (en) * 2010-09-29 2012-04-12 Sekisui Chem Co Ltd Method for producing slurry composition
US9023930B2 (en) 2010-09-29 2015-05-05 Sekisui Chemical Co., Ltd. Method for producing slurry composition
JP2015089656A (en) * 2013-11-06 2015-05-11 東ソー株式会社 Composite plate and method for producing the same

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03170360A (en) * 1989-11-30 1991-07-23 Taiyo Yuden Co Ltd Composition for ceramic green sheet
JPH06184604A (en) * 1991-11-08 1994-07-05 Mitsubishi Materials Corp Plastic composition and metallic articles obtained from this composition and their production
JP2005213064A (en) * 2004-01-27 2005-08-11 Nitta Ind Corp Binder for forming ceramic, green body, ceramic formed body and ceramic joining method
JP2009510987A (en) * 2005-09-30 2009-03-12 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Electric motor with hammer brush
JP4909435B2 (en) * 2009-03-31 2012-04-04 積水化学工業株式会社 Method for producing slurry composition
US9056801B2 (en) 2009-03-31 2015-06-16 Sekisui Chemical Co., Ltd. Method for producing slurry composition
JP2011219350A (en) * 2010-03-24 2011-11-04 Sekisui Chem Co Ltd Method for producing slurry composition
JP2011219349A (en) * 2010-03-24 2011-11-04 Sekisui Chem Co Ltd Method for producing slurry composition
JP2011231000A (en) * 2010-04-08 2011-11-17 Sekisui Chem Co Ltd Method of manufacturing slurry composition
JP2012072326A (en) * 2010-09-29 2012-04-12 Sekisui Chem Co Ltd Method for producing slurry composition
US9023930B2 (en) 2010-09-29 2015-05-05 Sekisui Chemical Co., Ltd. Method for producing slurry composition
JP2015089656A (en) * 2013-11-06 2015-05-11 東ソー株式会社 Composite plate and method for producing the same

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