CA1046724A - Porous diaphragms - Google Patents
Porous diaphragmsInfo
- Publication number
- CA1046724A CA1046724A CA205,246A CA205246A CA1046724A CA 1046724 A CA1046724 A CA 1046724A CA 205246 A CA205246 A CA 205246A CA 1046724 A CA1046724 A CA 1046724A
- Authority
- CA
- Canada
- Prior art keywords
- sheet
- fluoropolymer
- particulate additive
- dispersion
- aqueous slurry
- 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.)
- Expired
Links
- 210000000188 diaphragm Anatomy 0.000 claims abstract description 57
- 239000000654 additive Substances 0.000 claims abstract description 32
- 230000000996 additive effect Effects 0.000 claims abstract description 29
- 239000007787 solid Substances 0.000 claims abstract description 24
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 19
- 239000011148 porous material Substances 0.000 claims abstract description 17
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 16
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 229920002678 cellulose Polymers 0.000 claims abstract description 7
- 239000001913 cellulose Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 36
- 230000008569 process Effects 0.000 claims description 26
- 239000006185 dispersion Substances 0.000 claims description 24
- 239000002002 slurry Substances 0.000 claims description 18
- 229920002313 fluoropolymer Polymers 0.000 claims description 17
- 239000004811 fluoropolymer Substances 0.000 claims description 17
- 239000002245 particle Substances 0.000 claims description 11
- 238000011282 treatment Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000000314 lubricant Substances 0.000 claims description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 239000010425 asbestos Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 229910052895 riebeckite Inorganic materials 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 238000005054 agglomeration Methods 0.000 claims description 2
- 230000002776 aggregation Effects 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000000701 coagulant Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims description 2
- 230000008719 thickening Effects 0.000 claims description 2
- 239000011256 inorganic filler Substances 0.000 claims 1
- 229910003475 inorganic filler Inorganic materials 0.000 claims 1
- 239000011236 particulate material Substances 0.000 claims 1
- 230000002311 subsequent effect Effects 0.000 claims 1
- 239000012267 brine Substances 0.000 abstract description 5
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 abstract description 5
- 229920002994 synthetic fiber Polymers 0.000 abstract description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000460 chlorine Substances 0.000 abstract description 2
- 229910052801 chlorine Inorganic materials 0.000 abstract description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 2
- 239000011780 sodium chloride Substances 0.000 abstract 1
- 210000004027 cell Anatomy 0.000 description 20
- 238000003490 calendering Methods 0.000 description 17
- 229940058401 polytetrafluoroethylene Drugs 0.000 description 11
- 229920002472 Starch Polymers 0.000 description 8
- 239000008107 starch Substances 0.000 description 8
- 235000019698 starch Nutrition 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- 230000035699 permeability Effects 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 238000000605 extraction Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 210000002287 horizontal cell Anatomy 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 229960000443 hydrochloric acid Drugs 0.000 description 3
- 235000011167 hydrochloric acid Nutrition 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 229910001514 alkali metal chloride Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000002655 kraft paper Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229920002261 Corn starch Polymers 0.000 description 1
- 235000019759 Maize starch Nutrition 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000007529 inorganic bases Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 101150085091 lat-2 gene Proteins 0.000 description 1
- TWNIBLMWSKIRAT-VFUOTHLCSA-N levoglucosan Chemical group O[C@@H]1[C@@H](O)[C@H](O)[C@H]2CO[C@@H]1O2 TWNIBLMWSKIRAT-VFUOTHLCSA-N 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 229920001592 potato starch Polymers 0.000 description 1
- TVDSBUOJIPERQY-UHFFFAOYSA-N prop-2-yn-1-ol Chemical compound OCC#C TVDSBUOJIPERQY-UHFFFAOYSA-N 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B13/00—Diaphragms; Spacing elements
- C25B13/04—Diaphragms; Spacing elements characterised by the material
- C25B13/08—Diaphragms; Spacing elements characterised by the material based on organic materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3416973A GB1468356A (en) | 1973-07-18 | 1973-07-18 | Porous diaphragms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1046724A true CA1046724A (en) | 1979-01-23 |
Family
ID=10362248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA205,246A Expired CA1046724A (en) | 1973-07-18 | 1974-07-18 | Porous diaphragms |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5070464A (enrdf_load_stackoverflow) |
| BE (1) | BE817677A (enrdf_load_stackoverflow) |
| CA (1) | CA1046724A (enrdf_load_stackoverflow) |
| DE (1) | DE2433940A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2237989B1 (enrdf_load_stackoverflow) |
| GB (1) | GB1468356A (enrdf_load_stackoverflow) |
| IT (1) | IT1017228B (enrdf_load_stackoverflow) |
| NL (1) | NL7409610A (enrdf_load_stackoverflow) |
| ZA (1) | ZA744188B (enrdf_load_stackoverflow) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2343825A1 (fr) | 1976-03-08 | 1977-10-07 | Solvay | Electrode pour la production d'un gaz dans une cellule a membrane |
| ZA785994B (en) * | 1977-11-15 | 1980-04-30 | Ici Ltd | Production of porous diaphragms |
| US4297196A (en) * | 1980-03-17 | 1981-10-27 | Hooker Chemicals & Plastics Corp. | Stable low voltage microporous diaphragm for electrolytic cells |
| JPS596231A (ja) * | 1982-07-05 | 1984-01-13 | Mitsubishi Rayon Co Ltd | フッ素樹脂多孔質膜の製造方法 |
| LU85822A1 (fr) * | 1985-03-27 | 1986-10-06 | Cen Centre Energie Nucleaire | Procede de production d'une structure poreuse comprenant une matiere organique dispersee dans un liant |
| CN115027081B (zh) * | 2021-03-03 | 2024-09-03 | 哈尔滨纳新密封产品制造有限公司 | 一种聚四氟乙烯微孔膜及其制备方法与应用 |
-
1973
- 1973-07-18 GB GB3416973A patent/GB1468356A/en not_active Expired
-
1974
- 1974-06-28 ZA ZA00744188A patent/ZA744188B/xx unknown
- 1974-07-15 DE DE2433940A patent/DE2433940A1/de not_active Ceased
- 1974-07-15 BE BE146578A patent/BE817677A/xx unknown
- 1974-07-16 NL NL7409610A patent/NL7409610A/xx not_active Application Discontinuation
- 1974-07-17 IT IT7425269A patent/IT1017228B/it active
- 1974-07-17 FR FR7424926A patent/FR2237989B1/fr not_active Expired
- 1974-07-18 JP JP49081811A patent/JPS5070464A/ja active Pending
- 1974-07-18 CA CA205,246A patent/CA1046724A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5070464A (enrdf_load_stackoverflow) | 1975-06-11 |
| GB1468356A (en) | 1977-03-23 |
| BE817677A (fr) | 1975-01-15 |
| AU7082474A (en) | 1976-01-08 |
| ZA744188B (en) | 1975-07-30 |
| FR2237989B1 (enrdf_load_stackoverflow) | 1978-01-27 |
| IT1017228B (it) | 1977-07-20 |
| NL7409610A (nl) | 1975-01-21 |
| FR2237989A1 (enrdf_load_stackoverflow) | 1975-02-14 |
| DE2433940A1 (de) | 1975-02-06 |
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