DE878049C - Manufacture of a diaphragm for alkaline electrolytic cells - Google Patents

Manufacture of a diaphragm for alkaline electrolytic cells

Info

Publication number
DE878049C
DE878049C DEP11554A DEP0011554A DE878049C DE 878049 C DE878049 C DE 878049C DE P11554 A DEP11554 A DE P11554A DE P0011554 A DEP0011554 A DE P0011554A DE 878049 C DE878049 C DE 878049C
Authority
DE
Germany
Prior art keywords
fabric
diaphragm
polyvinyl chloride
electrolytic cells
post
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
Application number
DEP11554A
Other languages
German (de)
Inventor
Heinz Daehling
Guenther Dr Haensel
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.)
Demag Elektrometallurgie GmbH
Original Assignee
Demag Elektrometallurgie GmbH
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 Demag Elektrometallurgie GmbH filed Critical Demag Elektrometallurgie GmbH
Priority to DEP11554A priority Critical patent/DE878049C/en
Application granted granted Critical
Publication of DE878049C publication Critical patent/DE878049C/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M7/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made of other substances with subsequent freeing of the treated goods from the treating medium, e.g. swelling, e.g. polyolefins
    • D06M7/005—Treating fibres, threads, yarns, fabrics, or fibrous goods made of other substances with subsequent freeing of the treated goods from the treating medium, e.g. swelling, e.g. polyolefins made of asbestos
    • 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

Description

Herstellung eines Diaphragmas für alkalische elektrolytische Zellen Zur Herstellung von Diapliragmen für elektrolytische Zellen werden schon Kunststoffgewebe aus I'olvvin@#lchlori@d verwendet. Derartige Stoffe erleiden aber vor Erreichen der Temperatur, bei der sie nicht mehr beständig sind. Formveränderungen durch Schrumpfen. Es ist deshalb bereits vorgeschlagen worden, sie vor ihrer Verwendung als Diapliragma einerBehandlung mit warmemWasser, Wasserdampf oder heißer Luft zu unterziehen.Manufacture of a diaphragm for alkaline electrolytic cells Plastic fabrics are already being used to manufacture slide displays for electrolytic cells from I'olvvin @ # lchlori @ d used. Such substances suffer before they are reached the temperature at which they are no longer stable. Changes in shape due to shrinkage. It has therefore already been proposed to use them as a slide slide before using them to be treated with warm water, steam or hot air.

Es wurde weiter vorgeschlagen, reines Metallgewebe, insbesondere Nickelgewebe, für Diaphragmen zu verwenden. Diese sind aber elektrisch leitend und können leicht zu Kurzschluß oder unerwünschter Polarisation bzw. Gasentladung führen. Derartige Störungen treten z. ß. auf, wenn Kunststoffgewebe der genannten Art neben dem :Metallgewebe benutzt werden und nachträglich noch durch Form- oder Gewebeveränderungen ein weiteres Schrumpfen des Polyvinylchlorids erfolgt.It was also proposed to use pure metal mesh, in particular nickel mesh, to be used for diaphragms. But these are electrically conductive and can easily lead to short circuit or undesired polarization or gas discharge. Such Disturbances occur z. ß. on when plastic mesh of the type mentioned next to: metal mesh can be used and subsequently a further one through changes in shape or tissue Shrinkage of the polyvinyl chloride occurs.

Um diesem Mangel von vornherein zu begegnen, wird erfindungsgemäß das Polyvinylchloridgewebe in der gleichen alkalischen Lösung, in der später als Elektrolyt das Polyvinylchlori,dgewebe als Diaphragma verwendet werden soll, vorbehandelt, und zwar bei gegenüber der späteren Betriebstemperatur erhöhter Temperatur. Es hat sich gezeigt, daß auf diese Weise auch bei Geweben, die nach bisher bekannten Verfahren vorgeschrumpft waren, die sonst durch Einwirkung des Elektrolyts zusätzlich verursachten Gefügeveränderungen und hierdurch be- dingten nachträgHchen Schrumpfungen vermieden werden können.In order to counter this deficiency from the outset, the polyvinyl chloride fabric is pretreated according to the invention in the same alkaline solution in which the polyvinyl chloride fabric is to be used later as the electrolyte as a diaphragm, at a temperature that is higher than the later operating temperature. It has been shown that in this way, even in the case of tissues which have been pre-shrunk according to previously known methods, the structural changes otherwise caused by the action of the electrolyte and the subsequent shrinkage caused by this can be avoided.

Gewebe aus Polyv inylchlorid hat sich insbesondere dann als besonders brauchbar erwiesen, wenn die- erfindungsgemäße Behandlung bei Temperaturen zwischen c95 und cioo° erfolgt., Bei der Verwendung von Metallgewebe neben einem Polyvinylchl,oridgewebe hat es sich als günstig erwiesen, ein dichtes Gewebe aus dünnem Nickeldraht in solcher Lage zu verwenden, daß dieses der Sauerstoffseite zugewandt ist. .Das Kunststoffg,eweb,e kann dann ein dünnes, aber ebenfalls dichtes Gewebe sein; es ist gegen Angriffe durch Sauerstoff geschützt. Die im Betrieb erfolgende. Bewegung der beiden 'Tücher verhindert die Gefahr einer Anlagerung von Eisenoxyden an das Ideta11-gewebe und schränkt das Durchwachsen der Eisenoxyde durch das Diaphragma weitgehend ein. Etwaige Kurzschlüsse durch derartige Störungen sind damit wirksam vermieden. Es ist aber dafür Sorge zutragen, daß bei solchen Anordnungen die Anodenseite des Diaphragmas gegen ein etwaiges Anodenvorblech isoliert ist. , .' . ..Fabric made from polyvinyl chloride has then proven to be particularly special Proven useful when the treatment according to the invention at temperatures takes place between c95 and cioo °., When using metal mesh next to a Polyvinyl chloride has proven to be beneficial to be made of a dense fabric Use thin nickel wire in such a position that it is on the oxygen side is facing. The plastic g, eweb, e can then be thin, but also dense Be tissue; it is protected against attack by oxygen. The one taking place in the company. Moving the two 'cloths prevents the risk of iron oxide build-up to the Ideta11 tissue and restricts the growth of iron oxides through the diaphragm largely a. Any short circuits caused by such disturbances are thus effective avoided. Care must be taken, however, that in such arrangements the anode side of the diaphragm is insulated from any anode sheet metal. ,. ' . ..

Brauchbare Diaphragmen aus Polyvinyldhlori.dfasern, die mit Metallgewebe verwebt sind, entstehen durch ein- oder beidseitiges Scheren der Kunststoffaser. Dieses Gewebe kann zusätzlich fellartig aufgerauht sein. Störungen durch Schrumpfen sind hierbei ebenfalls vermieden. Das Grundgewebe aus Metall ist gut gegen die Elektroden isoliert und durch die Polyvinylchlori,dfasern gegen Gasidurchtritt gesichert. Im Rahmen der Erfindung kann auch Asbest, der kurzfaserig sein 'kann, zusätzlich im Gewebe enthalten sein.Usable diaphragms made of polyvinyl chloride.dfibers with metal mesh are woven, are created by shearing the plastic fiber on one or both sides. This fabric can also be roughened fur-like. Disruptions from shrinkage are also avoided here. The metal base fabric is good against the electrodes insulated and secured against gas penetration by the polyvinylchloride fibers. in the Within the scope of the invention, asbestos, which can have short fibers, can also be used in the Tissue to be included.

Claims (3)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung eines Diaphragmas für alkalische elektrolytische Zellen aus Polyvinylchloridgewebe, bei dem dieses einer Wärmenachbehandlung unterworfen wird, dadurch gekennzeichnet, .daß die Nachbehandlung bei gegenüber der späteren Betriebstemperatur erhöhter Temperatur in der gleichen alkalischen Lösung, in der später als Elektrolyt das Polyvinylchloridgewebe als Diaphragma verwendet werden soll, erfolgt. :PATENT CLAIMS: i. Method of making a diaphragm for alkaline electrolytic cells made of polyvinyl chloride fabric, in which this one Post-heat treatment is subjected, characterized in that the post-treatment at a higher temperature than the later operating temperature alkaline solution, in which the polyvinyl chloride fabric is later used as an electrolyte Diaphragm is to be used. : 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß ein Gewebe aus Metall und Polyvinylchlorid nachbehandelt wird, das ein-oder beidseitig velöürartig geschoren ist. 2. The method according to claim i, characterized characterized in that a fabric made of metal and polyvinyl chloride is post-treated, which is sheared on one or both sides like a velor. 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß fellartig aufgerauhtes Gewebe nachbehandelt wird. d.. Verfahren nach einem der Ansprüche i bis 3, dadurch gekennzeichnet, daß das Gewebe zusätzlich kurzfaserigen -Asbest enthält. Angezogene Druckschriften: Deutsche Patentschrift Nr. 745 498.3. The method according to claim 2, characterized in that fur-like roughened fabric is aftertreated. d .. The method according to any one of claims i to 3, characterized in that the fabric additionally contains short-fiber asbestos. Referenced publications: German patent specification No. 745 498.
DEP11554A 1948-10-02 1948-10-02 Manufacture of a diaphragm for alkaline electrolytic cells Expired DE878049C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP11554A DE878049C (en) 1948-10-02 1948-10-02 Manufacture of a diaphragm for alkaline electrolytic cells

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP11554A DE878049C (en) 1948-10-02 1948-10-02 Manufacture of a diaphragm for alkaline electrolytic cells

Publications (1)

Publication Number Publication Date
DE878049C true DE878049C (en) 1953-06-01

Family

ID=7363545

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP11554A Expired DE878049C (en) 1948-10-02 1948-10-02 Manufacture of a diaphragm for alkaline electrolytic cells

Country Status (1)

Country Link
DE (1) DE878049C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1144237B (en) * 1958-10-29 1963-02-28 Amalgamated Curacao Patents Co Diaphragm for electrolysis cells
DE1157201B (en) * 1957-09-14 1963-11-14 Seitz Asbest Werke Process for the production of a filter sheet

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE745498C (en) * 1936-06-14 1944-04-19 Ig Farbenindustrie Ag Process for the production of filter bodies, diaphragms and the like. like

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE745498C (en) * 1936-06-14 1944-04-19 Ig Farbenindustrie Ag Process for the production of filter bodies, diaphragms and the like. like

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1157201B (en) * 1957-09-14 1963-11-14 Seitz Asbest Werke Process for the production of a filter sheet
DE1144237B (en) * 1958-10-29 1963-02-28 Amalgamated Curacao Patents Co Diaphragm for electrolysis cells

Similar Documents

Publication Publication Date Title
DE2063238C3 (en) Method of manufacturing an electrode for use in electrolytic processes
DE2620589C3 (en) Activated cathode for use in the electrolysis of aqueous solutions
DE1483273C3 (en) Process for improving the galvanic properties of an aluminum alloy suitable for the production of sacrificial electrodes or galvanic elements
DE2713816A1 (en) METHOD OF ELECTROLYSIS OF SODIUM CHLORIDE SOLUTIONS
DE2157511B2 (en) Process for the reapplication of coatings for used, dimensionally stable electrodes
DE2909593C2 (en)
DE878049C (en) Manufacture of a diaphragm for alkaline electrolytic cells
DE1198880B (en) Process for the production of positive electrodes for nickel-cadmium batteries
DE2648479A1 (en) ELECTRODE FOR ELECTROLYTIC PROCESSES
DE2653984A1 (en) PROCESS FOR PRODUCING ELECTRODES SUITABLE FOR GALVANIC CELLS, IN PARTICULAR POSITIVE NICKEL ELECTRODES
DE751055C (en) Manufacture of electrodes for secondary elements, especially those with alkaline electrolyte
DE737917C (en) Process for the production of persalts by electrolysis
DE461135C (en) Process for the production of fine-pored wire mesh filters
DE323066C (en) Process for cleaning the surface of objects made of iron or steel by electrolytic means
DE747371C (en) Process for the electrolytic production of oxide-containing coatings on magnesium and magnesium alloys
DE1154623B (en) Process for the production of selective membranes
DE818798C (en) Diaphragm for electrolytic cells, especially for water decomposers
DEP0011554DA (en) Diaphragm, especially for water decomposers
DE2624202A1 (en) Electrolytic prodn. of chlorine and caustic alkali - in cell with permselective polymer membrane and amphoteric metal salt in anolyte
DE645912C (en) Process for producing electrically insulating layers on copper conductors
DE531672C (en) Process for the extraction of pure hydroxides of heavy metals
AT160054B (en) Process for roughening the surface of an electrode, in particular for electrolytic capacitors.
DE419309C (en) Method and device for the production of sodium by electrolysis
DE2141447A1 (en) Process for the electrolytic Her position of manganese dioxide
DE1521046C (en) Cyanidic, alkali hydroxide-free bath and process for the galvanic deposition of cadmium on iron parts, preferably spring steels