JPS55165103A - Production of composite membrane for reverse osmosis - Google Patents
Production of composite membrane for reverse osmosisInfo
- Publication number
- JPS55165103A JPS55165103A JP7226479A JP7226479A JPS55165103A JP S55165103 A JPS55165103 A JP S55165103A JP 7226479 A JP7226479 A JP 7226479A JP 7226479 A JP7226479 A JP 7226479A JP S55165103 A JPS55165103 A JP S55165103A
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- substrate membrane
- temperature
- drying
- coating liquid
- 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
- 239000012528 membrane Substances 0.000 title abstract 8
- 239000002131 composite material Substances 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 238000001223 reverse osmosis Methods 0.000 title 1
- 239000000758 substrate Substances 0.000 abstract 5
- 238000006243 chemical reaction Methods 0.000 abstract 3
- 238000001035 drying Methods 0.000 abstract 3
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 239000000178 monomer Substances 0.000 abstract 1
- 229920002492 poly(sulfone) Polymers 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 238000006116 polymerization reaction Methods 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 239000002344 surface layer Substances 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0083—Thermal after-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0095—Drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
- B01D69/125—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
PURPOSE:To obtain the membrane of considerably less fluctuations of performance industrially advantageously by making drying and heat treating temperatures specific. CONSTITUTION:The solution containing a film-formable in-situ polymerization type reaction component of monomer, oligomer or the product of initial reaction or the like which is a nonsolvent for a porous polysulfone substrate membrane is coated on the said substrate membrane. After this is first dried at a temperature of 140 deg.C or less, it is heat-treated at a temperature higher by about 10 deg.C or more than this drying temperature. This enables the production of the composite membrane of constant performance and quality with good reproducibility. Although the reasons for this are not sufficiently evident, it is presumed that the removal of the moisture contained in the substrate membrane and the solvent of the coating liquid takes place preferentially in the drying process, that the reaction components in the coating liquid having infiltered in the pores of the substrate membrane surface layer partly polymerize and the polymer thus formed is hard to receive thermal deformation and that this suppresses the shrinkage of the substrate membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54072264A JPS5924647B2 (en) | 1979-06-11 | 1979-06-11 | Manufacturing method of composite membrane for reverse osmosis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54072264A JPS5924647B2 (en) | 1979-06-11 | 1979-06-11 | Manufacturing method of composite membrane for reverse osmosis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55165103A true JPS55165103A (en) | 1980-12-23 |
| JPS5924647B2 JPS5924647B2 (en) | 1984-06-11 |
Family
ID=13484245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54072264A Expired JPS5924647B2 (en) | 1979-06-11 | 1979-06-11 | Manufacturing method of composite membrane for reverse osmosis |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5924647B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5892402A (en) * | 1981-11-27 | 1983-06-01 | Teijin Ltd | Preparation of composite membrane having selective permeability of organic substance |
| CN111054220A (en) * | 2019-12-30 | 2020-04-24 | 安徽普朗膜技术有限公司 | Drying method of organic tubular membrane |
-
1979
- 1979-06-11 JP JP54072264A patent/JPS5924647B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5892402A (en) * | 1981-11-27 | 1983-06-01 | Teijin Ltd | Preparation of composite membrane having selective permeability of organic substance |
| CN111054220A (en) * | 2019-12-30 | 2020-04-24 | 安徽普朗膜技术有限公司 | Drying method of organic tubular membrane |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5924647B2 (en) | 1984-06-11 |
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