JPS62100422A - Production of porous glass - Google Patents

Production of porous glass

Info

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
Application number
JP23791985A
Other languages
Japanese (ja)
Inventor
Eiji Kato
加藤　栄司
Kuniharu Yamada
邦晴 山田
Masanao Kunugi
正尚 功刀
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson 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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP23791985A priority Critical patent/JPS62100422A/en
Publication of JPS62100422A publication Critical patent/JPS62100422A/en
Pending legal-status Critical Current

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

PURPOSE:To produce porous glass having narrow pore diameter of several thousands angstrom in production of glass due to a sol-gel process by adding only silica powder produced by a wet process to pure water without using metallic alkoxide and gelatinizing it. CONSTITUTION:About 2kg silica powder produced by a wet process is introduced into about 100ml pure water by extremely small amount and is sufficiently dispersed and thereafter pH is regulated to 5-6. This sol soln. is charged in a vessel made of polypropylene so that the height is made to 2-5cm and the vessel is closed and allowed to stand at 30-40 deg.C for 48-60hr. Thereafter a narrow hole is penetrated on the vessel and the sol soln. is dried at 40-60 deg.C for 20-30 days and made to dry gel. Dry gel is introduced in an electric furnace and calcined at 900-1,200 deg.C and made to porous glass.

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.

〔発明の概要〕[Summary of the invention]

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.

〔従来技術〕[Prior art]

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.

〔問題点を解決するための手段〕[Means for solving problems]

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.

〔実施例〕〔Example〕

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)

【特許請求の範囲】[Claims] ゾル−ゲル法によるガラスの製造法において、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.
JP23791985A 1985-10-24 1985-10-24 Production of porous glass Pending JPS62100422A (en)

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)

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