DE4200104A1 - Coating process for membrane surfaces - comprises hydrophobising the membrane carrier to prevent deep penetration of the coating - Google Patents

Coating process for membrane surfaces - comprises hydrophobising the membrane carrier to prevent deep penetration of the coating

Info

Publication number
DE4200104A1
DE4200104A1 DE4200104A DE4200104A DE4200104A1 DE 4200104 A1 DE4200104 A1 DE 4200104A1 DE 4200104 A DE4200104 A DE 4200104A DE 4200104 A DE4200104 A DE 4200104A DE 4200104 A1 DE4200104 A1 DE 4200104A1
Authority
DE
Germany
Prior art keywords
membrane
carrier
coating
hydrophobising
support
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.)
Ceased
Application number
DE4200104A
Other languages
German (de)
Inventor
Erfinder Wird Nachtraeglich Benannt Der
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE4200104A priority Critical patent/DE4200104A1/en
Publication of DE4200104A1 publication Critical patent/DE4200104A1/en
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B01D69/10—Supported membranes; Membrane supports
    • B01D69/107—Organic support material
    • B01D69/1071—Woven, non-woven or net mesh
    • 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
    • B01D67/0039—Inorganic membrane manufacture
    • B01D67/0046—Inorganic membrane manufacture by slurry techniques, e.g. die or slip-casting
    • 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
    • B01D69/10—Supported membranes; Membrane supports
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/04—Hydrophobization
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/04—Characteristic thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/38—Hydrophobic membranes

Abstract

By hydrophobising a membrane carrier, a coating is prevented from being too thick and penetrating too deeply into it. Hydrophobising is ceased when the membrane layer is dried. The hydrophobising medium located in the membrane carrier is withdrawn by means of soln. or thermic expulsion and drawn on to the carrier with the aid of a gas mass flow through the membrane layer. The gas current is then further drawn through the carrier, thus further picking up the released hydrophobing medium. The organic skin formation on the membrane carrier has a thickness between 10 and 0.1 microns. USE/ADVANTAGE - To hydrophobise a membrane carrier using synthetic and natural waxes, fats, lard, and plant and animal fats.

Description

Reversibles Hydrophobieren und Hydrophobieren von hydro­ philen, porösen Werkstoffen und temporäres Verdichten von porösen Strukturen, erfindungsgemäß von filternden Abschei­ dern, Mikrofiltern, Membranen, Membranträgern und Ultra­ filtrationsmembranträgern und Engoben und Schichten zum erfindungsgemäßen Aufbringen von Glasuren, Engoben, Haut­ bildnern und Ultrafiltrationsmembranschichten und zum nach­ träglichen Austreiben, Auslösen oder Aufheizen wird bei Erhalt der Haut oder Beschichtung und Semipermeabel­ schichten ausgeführt.Reversible waterproofing and hydrophobicizing of hydro phile, porous materials and temporary compression of porous structures, according to the invention of filtering separations , microfilters, membranes, membrane supports and ultra filtration membrane supports and engobes and layers for applying glazes, engobes, skin according to the invention formers and ultrafiltration membrane layers and for after sluggish expulsion, triggering or heating up becomes with preservation of the skin or coating and semi-permeable layers executed.

Erfindungsgemäß wird nach einseitiger Hautbildung an Kanal­ innen- oder Kanalaußenwandungen das Hydrophobier- und Porositätsverdichtungsmaterial auf der der Hautbildungsseite abgewandten Seite ausgelöst oder ausgetrieben.According to the invention after unilateral skin formation on the channel inner or outer walls of the water repellent and Porosity compression material on the skin formation side triggered or expelled from the opposite side.

Poröse Körper werden so erfindungsgemäß mit Hautbildner von 10 µm bis 0,1 µm beschichtbar, auch mit Ultrafiltrations­ membranen.According to the invention, porous bodies are thus formed with skin formers coatable from 10 µm to 0.1 µm, also with ultrafiltration membranes.

Erfindungsgemäß werden Folien, Papierbahnlagen und Gewebelagen zum Zwecke der Fertigung von Expansionswabenkubaturen, die aus Parallelkanälen bestehen, mit einem Hydrophobierungsmittel formfixiert durch Temperaturabsenkung und Erstarren des Form­ fixierungs-Hydrophobierungsmittels.According to the invention, films, paper web layers and fabric layers for the purpose of manufacturing expansion honeycomb cubatures consist of parallel channels with a water repellent fixed in shape by lowering the temperature and solidifying the shape fixation water repellent.

Erfindungsgemäß werden hydrophobierte, fixierte Kubaturen mit synthetischen und natürlichen Wachsen, Fetten, Schmalz und pflanzlichen und animalischen Fetten erreicht.According to the invention, hydrophobic, fixed cubatures are used synthetic and natural waxes, fats, lard and vegetable and animal fats achieved.

Erfindungsgemäß werden so hydrophobierte Formen, Strukturen und Kubaturen als Formgebungsmasken, Matrizen benützt und erfindungsgemäß in oder mit keramischem Schlicker und Haut­ bildnern behandelt auf den fixierten hydrophoben Strukturen und Kubaturen. According to the invention, forms, structures which have been rendered hydrophobic and cubatures used as shaping masks, matrices and according to the invention in or with ceramic slip and skin formers treated on the fixed hydrophobic structures and cubatures.  

Schlicker trocknet formstabil mit reziproker Geschwindigkeit, wie die hydrophobe, formstabile Masse, bei Raumtemperatur ausgelöst oder thermisch ausgetrieben wird, bei gleich­ zeitiger Stabilisierung der Form.Schlicker dries dimensionally stable with reciprocal speed, like the hydrophobic, dimensionally stable mass, at room temperature triggered or thermally driven out, at the same early stabilization of the shape.

Claims (6)

1. Beschichtungsverfahren für Membranoberflächen, dadurch gekennzeichnet, daß erfindungsgemäß hydrophile Membranträger mit hauchdünnen Schichten zu Ultra- und Nanomembranen gemacht. Die gleichmäßige Beschichtungs­ stärke bestimmt die Permeabilität.
Durch Hydrophobieren der Membranträger wird die Beschich­ tung auf diesem einstellbar dick und am tiefen Eindringen in den Träger gehindert.1. Coating process for membrane surfaces , characterized in that according to the invention hydrophilic membrane supports with wafer-thin layers made into ultra and nano membranes. The uniform coating thickness determines the permeability.
By making the membrane support hydrophobic, the coating is adjustable on this and prevented from penetrating deeply into the support. 2. Nach Anspruch 1, dadurch gekennzeichnet, daß die Hydropho­ bierung aufgehoben wird, wenn die Membranschicht auf ihren Träger hingetrocknet ist. Durch Lösen oder thermisches Austreiben des im Membranträger eingelagerten Hydropho­ biermittels in die Gegenrichtung zur Membranschicht, aber ein Gasmassestrom zuerst durch die Membranschicht und diese dann auf den Träger gezogen wird und der Gasstrom weiter durch den Träger gezogen wird, unter Mitnahme des wieder­ ausgelösten Hydrophobiermittels.2. According to claim 1, characterized in that the hydropho is canceled when the membrane layer on their Carrier has dried. By loosening or thermal Expulsion of the Hydropho stored in the membrane support beer in the opposite direction to the membrane layer, however a gas mass flow first through the membrane layer and this then pulled onto the carrier and the gas flow continues is pulled through the carrier, taking the again triggered water repellent. 3. Nach Anspruch 1 und 2, dadurch gekennzeichnet, daß organische Hautbildner auf den Membranträger 10 µm bis 0,1 µm stark aufgetragen werden.3. According to claim 1 and 2, characterized in that organic Skin formers on the membrane support 10 µm to 0.1 µm thick be applied. 4. Nach Anspruch 1, 2 und 3, dadurch gekennzeichnet, daß der organische Auftrag durch eine Thermoprozeßbehandlung keramisiert wird. 4. According to claim 1, 2 and 3, characterized in that the organic application through a thermal process treatment is ceramized.   5. Nach Anspruch 1, 2, 3 und 4, dadurch gekennzeichnet, daß die Membranträger mit Lebensmittelölen, Ölen, Fetten und Wachsen hydrophobiert werden.5. According to claim 1, 2, 3 and 4, characterized in that the membrane carrier with food oils, oils, fats and Waxes become hydrophobic. 6. Nach Anspruch 1, 2, 3, 4 und 5 werden hydrophobierte Formen und Wabenstrukturen, Kubaturen als Formgebungsmasken und Matrizen benützt und mit keramischen Schlickern beschichtet, sowie mit Hautbildern.6. According to claim 1, 2, 3, 4 and 5 are hydrophobized Shapes and honeycomb structures, cubatures as shaping masks and matrices used and with ceramic slips coated, as well as with skin pictures.
DE4200104A 1992-01-04 1992-01-04 Coating process for membrane surfaces - comprises hydrophobising the membrane carrier to prevent deep penetration of the coating Ceased DE4200104A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4200104A DE4200104A1 (en) 1992-01-04 1992-01-04 Coating process for membrane surfaces - comprises hydrophobising the membrane carrier to prevent deep penetration of the coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4200104A DE4200104A1 (en) 1992-01-04 1992-01-04 Coating process for membrane surfaces - comprises hydrophobising the membrane carrier to prevent deep penetration of the coating

Publications (1)

Publication Number Publication Date
DE4200104A1 true DE4200104A1 (en) 1993-07-08

Family

ID=6449108

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4200104A Ceased DE4200104A1 (en) 1992-01-04 1992-01-04 Coating process for membrane surfaces - comprises hydrophobising the membrane carrier to prevent deep penetration of the coating

Country Status (1)

Country Link
DE (1) DE4200104A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004076041A1 (en) * 2003-02-26 2004-09-10 Hermsdorfer Institut Für Technische Keramik E.V. Ceramic nanofiltration membrane for use in organic solvents and method for the production thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004076041A1 (en) * 2003-02-26 2004-09-10 Hermsdorfer Institut Für Technische Keramik E.V. Ceramic nanofiltration membrane for use in organic solvents and method for the production thereof

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