JPS62100422A - Production of porous glass - Google Patents
Production of porous glassInfo
- Publication number
- JPS62100422A JPS62100422A JP23791985A JP23791985A JPS62100422A JP S62100422 A JPS62100422 A JP S62100422A JP 23791985 A JP23791985 A JP 23791985A JP 23791985 A JP23791985 A JP 23791985A JP S62100422 A JPS62100422 A JP S62100422A
- Authority
- JP
- Japan
- Prior art keywords
- porous glass
- sol
- glass
- vessel
- silica 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/006—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels to produce glass through wet route
-
- 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)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Glass Melting And Manufacturing (AREA)
- Glass Compositions (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は多孔質ガラスの製造方法に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a method for manufacturing porous glass.
本発明は、ゾル−ゲル法による多孔質ガラスの製造方法
において、ゾル調整に際し、金属アルコキシドを使用せ
ず、純水中に湿式法により製造されたシリカ粉末のみを
加えゲル化させることにより容易に多孔質ガラスを製造
することをDJ能にしたものである。The present invention provides a method for producing porous glass using the sol-gel method, in which the sol is easily prepared by adding only silica powder produced by a wet method to pure water and gelling it without using a metal alkoxide. This makes it possible to manufacture porous glass.
従来の多孔質ガラスの製造方法は、コーニンググラスワ
ークの特許(U、 S、 Pat 2,2150!+9
゜2.221709)に示されているように、硼酸、ア
ルカリ金属酸化物、珪砂等を主原料として溶融した硼珪
酸ガラスを数百度の温度で熱処理して、分相させる。こ
の分相処理により、珪砂質(StOz)のガラス相と、
硼酸とアルカリ金属酸化物に富んだガラス相とに分離さ
せる。次にこのガラスを酸溶液、又は熱水で処理するこ
とにより、硼酸とアルカリ金属に富んだガラス相が溶出
し、珪酸成分に富み、元の形状を保持(〜たガラスとな
るという製造方法であった。又、ゾルゲル法におけるガ
ラスの製造においても、金属アルコキシドを使用し加水
分解させた後にゾルを造るというものであった。The conventional method for manufacturing porous glass is patented by Corning Glassworks (U, S, Pat 2,2150!+9
2.221709), borosilicate glass made from boric acid, alkali metal oxides, silica sand, etc. as main raw materials is heat treated at a temperature of several hundred degrees to cause phase separation. Through this phase separation treatment, a glass phase of siliceous sand (StOz) and
It separates into a glassy phase rich in boric acid and alkali metal oxides. Next, by treating this glass with an acid solution or hot water, a glass phase rich in boric acid and alkali metals is eluted, resulting in a glass that is rich in silicic acid components and retains its original shape. Also, in the production of glass using the sol-gel method, a metal alkoxide is used and a sol is produced after hydrolysis.
〔発明が解決しようとする問題点及び目的〕しかし、前
述の従来技術では、大きさについては100 x 10
.:0.x5朋程度が限界であり、それ以上の大きさの
物については製造不可能である。特に厚みに関しては、
5m1t以上の厚みになると、酸溶液や熱水処理した場
合に、硼酸とアルカリ金属の成分に富んだガラス相の溶
出が均一に起こらず、厚さ方向に対して細孔径の不均一
な多孔質ガラスしか製造できないという問題点を有する
。父、金属アルコキシドを使用したゾルゲル法における
多孔質ガラスの製造においても、数百オングストローム
−数十オングストロームの細孔径を有する多孔質ガラス
しか製造することができず、それ以上の細孔径を有する
多孔質ガラスを製造することは不可能であるという問題
点を有する。そこで本発明はこのような問題点を解決す
るもので、その目的とするところは、大きなバルク状で
あり数百オングストロームから数千オングストロームの
細孔径を有する多孔質ガラスの製造方法を提供するとこ
ろにある。[Problems and objects to be solved by the invention] However, in the above-mentioned prior art, the size is 100 x 10
.. :0. The limit is about 5 x 5 mm, and it is impossible to manufacture items larger than that. Especially regarding the thickness,
When the thickness exceeds 5 m1t, the elution of the glass phase rich in boric acid and alkali metal components does not occur uniformly when treated with an acid solution or hot water, resulting in a porous structure with non-uniform pore diameters in the thickness direction. The problem is that only glass can be produced. Even in the production of porous glass using the sol-gel method using metal alkoxides, it is only possible to produce porous glass with pore diameters of several hundred angstroms to tens of angstroms. The problem is that it is impossible to manufacture glass. The present invention is intended to solve these problems, and its purpose is to provide a method for producing large bulk porous glass having pore diameters ranging from several hundred angstroms to several thousand angstroms. be.
本発明の多孔質ガラスの製造方法は、ゾル−ゲル法によ
るガラスの製造方法において、金属アルコキシドを使用
せず、純水中に湿式法により製造されたシリカ粉末のみ
を加えゲル化きせることを特徴とする。The method for producing porous glass of the present invention is characterized in that, in the method for producing glass by the sol-gel method, only silica powder produced by a wet method is added to pure water and gelled, without using metal alkoxide. shall be.
以下に実施例を詳細に述べる。 Examples will be described in detail below.
実施例1
純水1000mに、シリカ粉末(日本シリカニ業製、N
A)2kgを分散させる。分散の際には、溶媒のpH値
を3〜5@度に調整しながら、極少量づつ投入する。攪
拌翼でよく攪拌i〜、十分分散させた後にpH値を5〜
6に調整する。このゾル溶液をポリプロピレン製容器(
φj00Xh5D、)に高さが2〜5CrILになるよ
うに仕込む。この容器を密閉し、60〜40℃で48〜
60時間放置する。その後容器に、容器の表面積の数チ
ル10数チになるように細い穴を開け、40〜60℃で
20〜30日間乾燥させ、ドライゲルを得る。次にドラ
イゲルを電気炉に入れ900〜1200℃で焼成し多孔
質ガラスを得る。得られた多孔質ガラスの平均細孔径を
第1表に示す。Example 1 Silica powder (manufactured by Nippon Silkani Industry Co., Ltd., N
A) Disperse 2 kg. During dispersion, the pH value of the solvent is adjusted to 3 to 5 degrees, and a very small amount is added at a time. Stir well with a stirring blade i~, and after sufficient dispersion, adjust the pH value to 5~
Adjust to 6. This sol solution was poured into a polypropylene container (
φj00Xh5D,) so that the height is 2 to 5 CrIL. Seal this container and heat at 60 to 40℃ for 48 to 40 minutes.
Leave for 60 hours. Thereafter, a thin hole is made in the container so that the surface area of the container is several inches, and the hole is dried at 40 to 60° C. for 20 to 30 days to obtain a dry gel. Next, the dry gel is placed in an electric furnace and fired at 900 to 1200°C to obtain porous glass. Table 1 shows the average pore diameter of the porous glass obtained.
実施例2
実施例1と同様の条件でゾルを調整するが、純水中に加
えるシリカ粉末は日本シリカニ業製のLPを使用し、乾
燥、焼成は実施例1と同様とした。Example 2 A sol was prepared under the same conditions as in Example 1, but the silica powder added to the pure water was LP manufactured by Nippon Silikani Industry, and the drying and firing were the same as in Example 1.
得られた多孔質ガラスの平均細孔径を第1表に示“・
、1よ
〔発明の効果〕
以上述べたように本発明によれば、金属アルコキシドを
使用することなしに、数千オングストロームの細孔径を
有する多孔質ガラスを製造することが可能であるという
効果を有する。The average pore diameter of the obtained porous glass is shown in Table 1.
, 1 [Effects of the Invention] As described above, according to the present invention, it is possible to produce porous glass having a pore diameter of several thousand angstroms without using metal alkoxide. have
以上that's all
Claims (1)
コキシドを使用せず純水中に湿式法により製造されたシ
リカ粉末のみを加えゲル化させることを特徴とする多孔
質ガラスの製造方法。1. A method for producing porous glass using a sol-gel method, characterized in that only silica powder produced by a wet method is added to pure water and gelled without using metal alkoxide.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23791985A JPS62100422A (en) | 1985-10-24 | 1985-10-24 | Production of porous glass |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23791985A JPS62100422A (en) | 1985-10-24 | 1985-10-24 | Production of porous glass |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62100422A true JPS62100422A (en) | 1987-05-09 |
Family
ID=17022389
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23791985A Pending JPS62100422A (en) | 1985-10-24 | 1985-10-24 | Production of porous glass |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62100422A (en) |
-
1985
- 1985-10-24 JP JP23791985A patent/JPS62100422A/en active Pending
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