JPS57166331A - Preparation of porous hollow fiber of glass - Google Patents
Preparation of porous hollow fiber of glassInfo
- Publication number
- JPS57166331A JPS57166331A JP56048676A JP4867681A JPS57166331A JP S57166331 A JPS57166331 A JP S57166331A JP 56048676 A JP56048676 A JP 56048676A JP 4867681 A JP4867681 A JP 4867681A JP S57166331 A JPS57166331 A JP S57166331A
- Authority
- JP
- Japan
- Prior art keywords
- na2o
- hollow fiber
- acid
- glass
- thin layer
- 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.)
- Granted
Links
- 239000012510 hollow fiber Substances 0.000 title abstract 4
- 239000011521 glass Substances 0.000 title abstract 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 8
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 5
- 238000005191 phase separation Methods 0.000 abstract 4
- 238000010306 acid treatment Methods 0.000 abstract 3
- 239000002253 acid Substances 0.000 abstract 2
- 239000005388 borosilicate glass Substances 0.000 abstract 2
- 239000011148 porous material Substances 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
- B01D71/04—Glass
-
- 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
- C03C13/00—Fibre or filament compositions
- C03C13/005—Fibre or filament compositions obtained by leaching of a soluble phase and consolidation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Glass Melting And Manufacturing (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Glass Compositions (AREA)
Abstract
PURPOSE:To obtain a porous hollow fiber of glass efficiently, by extracting B2O and Na2O from the surface of a hollow fiber of borosilicate glass to form the thin layer surface having pores, subjecting the rest to heat-treatment phase separation, eluting B2O and Na2O with an acid. CONSTITUTION:B2O and Na2O are extracted from the surface of the hollow fiber 1 of borosilicate glass by acid treatment, etc., and the thin layer 4 having innumerable uniform pores is formed. For example, in case of sulfuric acid, the acid extraction is carried out at normal temperature - about 95 deg.C for about 1-50hr using about 0.5-3N aqueous solution of sulfuric acid, and the thin layer 4 is about 1,000Angstrom thick. The phase separation is done by heat-treating the glass at about 500-650 deg.C, so that B2O and Na2O are concentrated. After the phase separation is over, B2O and Na2O are eluted from the parts of the phase separation by acid treatment, etc., removed, and the gas permeable path 2 passing through the pipe except the thin layer 4 is formed. For example, in case of sulfuric acid, the acid treatment is carried out at normal temperature - about 100 deg.C for 10-50hr by using about 0.5-3N sulfuric acid solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56048676A JPS57166331A (en) | 1981-03-31 | 1981-03-31 | Preparation of porous hollow fiber of glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56048676A JPS57166331A (en) | 1981-03-31 | 1981-03-31 | Preparation of porous hollow fiber of glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57166331A true JPS57166331A (en) | 1982-10-13 |
| JPH0139974B2 JPH0139974B2 (en) | 1989-08-24 |
Family
ID=12809916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56048676A Granted JPS57166331A (en) | 1981-03-31 | 1981-03-31 | Preparation of porous hollow fiber of glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57166331A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4521236A (en) * | 1982-09-06 | 1985-06-04 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Method for preparation of porous glass film |
| JPS61158845A (en) * | 1984-12-24 | 1986-07-18 | ピーピージー・インダストリーズ・インコーポレーテツド | Porous and high silica content full or hollow glass fiber and manufacture |
| US5011566A (en) * | 1989-03-15 | 1991-04-30 | The United States Of America As Represented By The Secretary Of The Air Force | Method of manufacturing microscopic tube material |
| WO2021095545A1 (en) * | 2019-11-11 | 2021-05-20 | 日本電気硝子株式会社 | Method for producing porous glass member |
-
1981
- 1981-03-31 JP JP56048676A patent/JPS57166331A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4521236A (en) * | 1982-09-06 | 1985-06-04 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Method for preparation of porous glass film |
| JPS61158845A (en) * | 1984-12-24 | 1986-07-18 | ピーピージー・インダストリーズ・インコーポレーテツド | Porous and high silica content full or hollow glass fiber and manufacture |
| US5011566A (en) * | 1989-03-15 | 1991-04-30 | The United States Of America As Represented By The Secretary Of The Air Force | Method of manufacturing microscopic tube material |
| WO2021095545A1 (en) * | 2019-11-11 | 2021-05-20 | 日本電気硝子株式会社 | Method for producing porous glass member |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0139974B2 (en) | 1989-08-24 |
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