JPS5573885A - Preparation of diaphragm - Google Patents
Preparation of diaphragmInfo
- Publication number
- JPS5573885A JPS5573885A JP14604778A JP14604778A JPS5573885A JP S5573885 A JPS5573885 A JP S5573885A JP 14604778 A JP14604778 A JP 14604778A JP 14604778 A JP14604778 A JP 14604778A JP S5573885 A JPS5573885 A JP S5573885A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- matter
- membraneous
- alkali metal
- metal hydroxide
- 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
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
PURPOSE: To manufacture the diaphragm difficult to swell and able to keep a good water permeability in a long period, by carrying out heat treatment at a specific temperature range after mixing asbestos fiber and fluorine contained polymer under the existence of alkali metal hydroxide water solution and forming membraneous matter.
CONSTITUTION: Membraneous matter is formed by mixing asbestos fiber with 5W 40wt% of fluorine contained polymer against the above fiber under the existence of water solution of alkali metal hydroxide, such as NaOH etc. On this occasion concentration of alkali metal hydroxide is 2.0W8.0 N, preferably 2.0W4.0 N. Also, for example, polytetrafluoroethylene etc. having melting point of more than about 270°C, is used for the above polymer. Next, amied diaphragm is manufactured by heat-treating the above mentioned membraneous matter at 200W250°C, especially 210W230°C after drying or as it is. The above diaphragm is favorably used for manufacturing Cl2 and NaOH by the electrolysis of salt water especially.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14604778A JPS5573885A (en) | 1978-11-28 | 1978-11-28 | Preparation of diaphragm |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14604778A JPS5573885A (en) | 1978-11-28 | 1978-11-28 | Preparation of diaphragm |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5573885A true JPS5573885A (en) | 1980-06-03 |
Family
ID=15398892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14604778A Pending JPS5573885A (en) | 1978-11-28 | 1978-11-28 | Preparation of diaphragm |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5573885A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4444640A (en) * | 1980-09-22 | 1984-04-24 | Diamond Shamrock Corporation | Dimensionally stable asbestos-polytetrafluoroethylene diaphragms for chloralkali electrolytic cells |
US4806214A (en) * | 1985-12-24 | 1989-02-21 | Ppg Industries, Inc. | Method of preparing an asbestos diaphragm |
-
1978
- 1978-11-28 JP JP14604778A patent/JPS5573885A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4444640A (en) * | 1980-09-22 | 1984-04-24 | Diamond Shamrock Corporation | Dimensionally stable asbestos-polytetrafluoroethylene diaphragms for chloralkali electrolytic cells |
US4806214A (en) * | 1985-12-24 | 1989-02-21 | Ppg Industries, Inc. | Method of preparing an asbestos diaphragm |
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