JPH01133946A - Production of quartz glass crucible - Google Patents
Production of quartz glass crucibleInfo
- Publication number
- JPH01133946A JPH01133946A JP62293553A JP29355387A JPH01133946A JP H01133946 A JPH01133946 A JP H01133946A JP 62293553 A JP62293553 A JP 62293553A JP 29355387 A JP29355387 A JP 29355387A JP H01133946 A JPH01133946 A JP H01133946A
- Authority
- JP
- Japan
- Prior art keywords
- gel
- aging
- quartz glass
- crucible
- opening
- 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
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 230000032683 aging Effects 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 9
- 238000003980 solgel method Methods 0.000 claims description 5
- 238000001879 gelation Methods 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 238000007664 blowing Methods 0.000 abstract 1
- 239000000499 gel Substances 0.000 description 29
- 230000005070 ripening Effects 0.000 description 8
- 239000011521 glass Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 229920001817 Agar Polymers 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/12—Other methods of shaping glass by liquid-phase reaction processes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Melting And Manufacturing (AREA)
- Silicon Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ゾル−ゲル法によるガラス成形体の製造に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to the production of glass molded bodies by a sol-gel method.
ゾル−ゲル法は、アルコキシシランあるいは金属アルフ
キシトを主原料とし、主原料の加水分解溶液にシリカに
代表される酸化物微粒子等を添加したゾルと称する液体
原料を、加熱やＰＨ値の調整等の手段により固化（以下
、ゲル化と呼ぶ）させてゲルと呼ばれる固形物を得、該
ゲルを乾燥。In the sol-gel method, the main raw material is alkoxysilane or metal alphoxide, and a liquid raw material called sol, which is made by adding fine oxide particles such as silica to a hydrolyzed solution of the main raw material, is heated and the pH value is adjusted. Solidify (hereinafter referred to as gelation) by means to obtain a solid substance called gel, and dry the gel.
焼結してガラスあるいはセラミックスを得るという、ガ
ラスあるいはセラミックスの製造法であるゲルは、ゲル
化直後は弾性があって軟い寒天状であるが、時間を経る
に従って強度を増しぜい性を持ってくる。このような機
械的性質の変化を待つ工程を熟成工程と呼ぶ。Gel is a manufacturing method for glass or ceramics in which glass or ceramics are obtained by sintering. Immediately after gelation, it is elastic and soft like agar, but as time passes it increases in strength and becomes brittle. It's coming. The process of waiting for such changes in mechanical properties is called the aging process.
熟成工程はしばしば熟成液と呼ばれるゲルに含まれる溶
媒に近い組成の液体中で行なわれる。これは主としてゲ
ルの乾燥に伴う割れを防ぐための手段であ禾が、副次的
効果として浮力でゲルを支えることにより、自重による
破損を防ぐ効果も考慮されている。The ripening process is often carried out in a liquid called a ripening liquid, which has a composition similar to the solvent contained in the gel. This is primarily a means to prevent the gel from cracking as it dries, but a secondary effect is to support the gel with buoyancy, thereby preventing it from breaking due to its own weight.
しかしながら、熟成液の組成はゲル中の溶媒の組成によ
り制限を受けるので、浮力によりて自重を相殺するよう
な比重の調整は一般に困難であり、大型で肉厚の薄い成
形ゲルの熟成は難しい。However, since the composition of the ripening liquid is limited by the composition of the solvent in the gel, it is generally difficult to adjust the specific gravity so as to offset its own weight by buoyancy, and it is difficult to ripen large, thin-walled molded gels.
本発明は、このような従来技術の欠点を補って大型、肉
薄成形品の製造を容易ならしめる事を目的としている。The purpose of the present invention is to compensate for the drawbacks of the prior art and facilitate the manufacture of large, thin molded products.
本発明は、熟成液を満たした熟成槽内にるつぼ状に成形
されたゲルを開口部を下に向げた姿勢にし、伏せた椀形
の内部に気体を入れて置く事を特徴とする。The present invention is characterized in that a crucible-shaped gel is placed in a ripening tank filled with a ripening liquid, with the opening facing downward, and gas is placed inside the bowl-shaped interior.
以下、実施例に沿って説明する。Hereinafter, it will be explained along with examples.
第１図に本発明の原理図を示す。 FIG. 1 shows a diagram of the principle of the present invention.
るつぼ状に成形されたゲル１は開口部２を下に向けた姿
勢で熟成液３を満たした熟成槽４の中に置かれる。ゲル
１の椀形の内部には気体５が入れられる。この時、ゲル
にかかる力を従来例（第２図−α）と本発明の実施例（
第２図−ｂ）とで比較すると、従来例では、ゲルの液体
中での重ｘｉ（空気中での重量から熟成液との比重差に
より生じる浮力を引いた値）がすべてゲルの開口部にか
かり、応力の集中が杢じる。一方、本発明の実施例では
、ゲルの重量は、開口部と、気体のたまる椀形の内壁に
分散してかかるため、応力の集中が少ない。A crucible-shaped gel 1 is placed in a ripening tank 4 filled with a ripening liquid 3 with the opening 2 facing downward. Gas 5 is placed inside the bowl-shaped gel 1. At this time, the force applied to the gel was determined from the conventional example (Fig. 2-α) and the embodiment of the present invention (Fig. 2-α).
Comparing with Fig. 2-b), in the conventional example, the weight of the gel in the liquid xi (the value obtained by subtracting the buoyancy caused by the difference in specific gravity with the aging liquid from the weight in air) is entirely at the opening of the gel. , and the concentration of stress is reduced. On the other hand, in the embodiment of the present invention, the weight of the gel is dispersed and applied to the opening and the bowl-shaped inner wall where gas accumulates, so there is less stress concentration.
ゲルの椀形の内部に気体を入れる方法としては、第３図
のように、ゲル３１を熟成ｇ３３中に浸した後（第３図
−α）、開口部３２を下に向け（第３図−ｂ）、その後
で気体３５を吹き込む方法や、第４図に示すように、空
気抜き管４６を用意し、空気抜き管の一端をゲル４１の
椀形の内部に置き、他端を空気中に出したまま（第４図
−α）、開口部４２を下に向けたまま熟成液４３中に沈
めていくと、内部の空気は空気抜き管を通って抜けてい
くので、ゲルを沈める深さで空気量を調節するというよ
うな方法が考えられる。To introduce gas into the bowl-shaped interior of the gel, as shown in Figure 3, after soaking the gel 31 in the aging gel 33 (Figure 3-α), turn the opening 32 downward (Figure 3). -b) Then, as shown in FIG. 4, an air venting tube 46 is prepared, one end of the air venting tube is placed inside the bowl-shaped gel 41, and the other end is exposed to the air. When the gel is submerged in the ripening liquid 43 with the opening 42 facing downward (Fig. 4-α), the air inside will escape through the air vent tube, so the air will be removed at the depth at which the gel is submerged. One possible method is to adjust the amount.
本発明により、ゾル−ゲル法によるガラス成形品（特に
石英ガラスるつぼ）の設計に自由度が増す。具体的に述
べると、従来、ゲル時の機械的強度によって制限を受け
てきた薄肉化、大型化が可能になる。The present invention increases the degree of freedom in designing glass molded products (particularly quartz glass crucibles) by the sol-gel method. Specifically, it becomes possible to achieve thinner walls and larger sizes, which were conventionally limited by mechanical strength during gelling.
また、本発明はるつぼ状の成形品にのみ適用できるので
はなく、皿状、びん状等、空気の溜まり得る部位を有す
る形状のものすべてに応用が可能である。例えば、コツ
プ、グラス類、ビン、フラスコ類、ポット類、コイル状
に巻かれた管、ノくツ）、）ｌ／に類が挙げられる。Furthermore, the present invention is not only applicable to crucible-shaped molded products, but can also be applied to any shape that has a portion where air can accumulate, such as a plate shape or a bottle shape. Examples include cups, glasses, bottles, flasks, pots, coiled tubes, knots), )l/.
また、材質も石英ガラスに限られない。ゾル−ゲル法に
より製造可能なすべての組成のガラスおよびセラミック
スの成形品に応用が可能である。Furthermore, the material is not limited to quartz glass. It can be applied to glass and ceramic molded products of all compositions that can be manufactured by the sol-gel method.
さらに言及すれば、製造工程中にゲル状（ゼリー状）の
状態をとるような有機高分子化合物の成形品の製造工程
にも応用が可能である。More specifically, it can also be applied to the manufacturing process of molded articles of organic polymer compounds that take a gel-like (jelly-like) state during the manufacturing process.
第１図は本発明の原理図である。番号は以下のものを示
す。
１・・・・・・・・・るつぼ状に成形されたゲル２・・
・・・・・・・開口部
３・・・・・・・・・熟成液
４・・・・・・・・・熟成槽
５・・・・・・・・・気 体
第２図α、ｂは、従来法と本発明の原理の比較図である
。第２図−αは従来法、第２図−ｂは本発明を示す。矢
印は、ゲルにかかる応力を示し、その長さは応力の大き
さを示す。
第３図α、ｂ、ｃは、椀形の内部に気体を入れる方法の
一例の原理図である。番号は以下のものを示す。
３１・・・・・・るつぼ状に成形されたゲル３２・・・
・・・開口部
３３・・・・・・熟成液
３５・・・・・・注入された空気
第３図−αはゲルが熟成液に浸された状態、ｂはゲルが
開口部を下に向けられた状態、Ｃはゲルの椀形の内部に
空気が吹き込まれた状態を示す。
第４図α、ｂは、椀形の内部に気体を入れる方法の他の
一例の原理図である。番号は以下のものを示す。
４１・・・・・・るつぼ状に成形されたゲル４２・・・
・・・開口部
４５・・・・・・熟成液
４５・・・・・・椀形の内部に閉じ込められた空気４６
・・・・・・空気抜き管
第４図−αは空気抜き管の両端とゲルの位置関係を示し
、第４図すは、ゲルを開口部を下に熟成液に沈めた時の
、椀形の内部に閉じ込められた空気の状態を示す。
以上
出願人 セイコーエプソン株式会社
代理人 弁理士最上務（他１名）
第１図
し
第２図
す
第４図FIG. 1 is a diagram showing the principle of the present invention. The numbers indicate the following: 1... Gel shaped into a crucible shape 2...
......Opening 3...Aging liquid 4...Aging tank 5...Gas Fig. 2 α, b is a comparison diagram of the principle of the conventional method and the present invention. FIG. 2-α shows the conventional method, and FIG. 2-b shows the present invention. The arrow indicates the stress applied to the gel, and its length indicates the magnitude of the stress. Figures α, b, and c are diagrams showing the principle of an example of a method for introducing gas into the bowl-shaped interior. The numbers indicate the following: 31... Gel shaped into a crucible shape 32...
... Opening 33 ... Maturing liquid 35 ... Injected air Figure 3 - α shows the gel immersed in the aging liquid, b shows the gel facing down through the opening. The oriented state, C, shows the state in which air is blown into the bowl-shaped interior of the gel. Figures 4a and 4b are diagrams showing the principle of another example of a method for introducing gas into the bowl-shaped interior. The numbers indicate the following: 41... Gel shaped into a crucible shape 42...
...Opening part 45...Aging liquid 45...Air trapped inside the bowl shape 46
... Air vent tube Figure 4-α shows the positional relationship between both ends of the air vent tube and the gel. Indicates the state of air trapped inside. Applicant Seiko Epson Co., Ltd. Agent, Chief Patent Attorney (1 other person) Figure 1, Figure 2, Figure 4
Claims (1)
よび焼結工程よりなるゾル−ゲル法による石英ガラスる
つぼの製造における熟成工程において、熟成液を満たし
た熟成槽内にるつぼ状に成形されたゲルを開口部を下に
向け、内部に気体を入れて置く事を特徴とする石英ガラ
スるつぼの製造法。In the maturing process of manufacturing quartz glass crucibles by the sol-gel method, which consists of a sol preparation process, a molding gelation process, an aging process, a drying process, and a sintering process, the silica glass crucible is formed into a crucible shape in a maturing tank filled with a maturing liquid. A method for manufacturing a quartz glass crucible, which is characterized by placing the gel with the opening facing down and gas inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62293553A JPH01133946A (en) | 1987-11-20 | 1987-11-20 | Production of quartz glass crucible |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62293553A JPH01133946A (en) | 1987-11-20 | 1987-11-20 | Production of quartz glass crucible |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01133946A true JPH01133946A (en) | 1989-05-26 |
Family
ID=17796243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62293553A Pending JPH01133946A (en) | 1987-11-20 | 1987-11-20 | Production of quartz glass crucible |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01133946A (en) |
-
1987
- 1987-11-20 JP JP62293553A patent/JPH01133946A/en active Pending
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