DE866356C - Electrical insulation - Google Patents

Electrical insulation

Info

Publication number
DE866356C
DE866356C DEB9508D DEB0009508D DE866356C DE 866356 C DE866356 C DE 866356C DE B9508 D DEB9508 D DE B9508D DE B0009508 D DEB0009508 D DE B0009508D DE 866356 C DE866356 C DE 866356C
Authority
DE
Germany
Prior art keywords
electrical insulation
methyl cellulose
methylcellulose
electrical
water
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
DEB9508D
Other languages
German (de)
Inventor
Hermann Dipl-Ing Straeb
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DEB9508D priority Critical patent/DE866356C/en
Application granted granted Critical
Publication of DE866356C publication Critical patent/DE866356C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/185—Substances or derivates of cellulose

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Paper (AREA)
  • Organic Insulating Materials (AREA)

Description

Elektrische Isolierung Es ist bekannt, elektrische Isolierungen dadurch herzustellen, daß man Kunstharz und derartige Stoffe um den zu isolierenden Leiter herumpreßt oder -wickelt oder den zu isolierenden Leiter mit solchen Stoffen bestreicht. Es sind zu diesem Zweck auch bereits Kunstharze verwendet worden, deren Verlustfaktor und deren Dielektrizitätskonstante verhältnismäßig günstig und dem Verwendungszweck des Leiters angepaßt war.Electrical insulation It is known to produce electrical insulation by doing this manufacture that one synthetic resin and such substances around the conductor to be insulated Pressing or winding around or coating the conductor to be insulated with such substances. Synthetic resins have already been used for this purpose, their loss factor and their dielectric constant relatively cheap and the intended use of the head was adapted.

Die Erfindung bezieht sich auf eine elektrische Isolierung, die in an sich bekannter Weise nach einem beliebigen Verfahren hergestellt wird, und besteht darin, daß als Isolierstoff in gelöstem Zustand aufgetragene .Methylcellulose verwendet ist. Methvlcellulose ist als Appreturmittel für Gewebe bekannt und dient im allgemeinen als Klebemittel. Sie ist im Handel als wolliges, faseriges Gespinst erhältlich, das auch zum Umwickeln und Umspinnen von elektrischen Leitern verwendet wird. Durch Auflösen in kochendem Wasser kann die Methylcellulose zu einem gallertartigen Brei verarbeitet werden, der unter Ausscheidung von Wasser in der Luft langsam trocknet und auf dem damit überzogenen Körper eine dünne Haut zurückl,äßt.The invention relates to electrical insulation that is used in is produced in a manner known per se by any process, and consists in that applied as an insulating material in a dissolved state .Methylcellulose used is. Methylcellulose is known and generally used as a finishing agent for fabrics as an adhesive. It is available in stores as a woolly, fibrous web, which is also used for wrapping and spinning electrical conductors. By Dissolving in boiling water can turn the methyl cellulose into a gelatinous paste processed, which dries slowly with excretion of water in the air and leaves a thin skin on the body covered with it.

Es hat sich gezeigt, daß diese'Methvlcelluloseschichten einen sehr geringen Verlustfaktor besitzen, der besser ist als der Verlustfaktor der gebräuchlichen Isolierlacke. Die Hauptvorteile der Verwendung von Methylcellulose als Isolierstoff sind insbesondere die leichte Löslichkeit derMethylcellulose im Ausgangszustand in Wasser. An die Stelle der teuren Lösungsmittel für die bisher gebräuchlichen Isolierstoffe, die unter Umständen die Herstellung von Isolierstoffen explosions- und feuergefährlich machen, tritt bei Verwendung von Methylcellulose einfach Wasser. Die entstandene Methylcelluloseschicht ist temperatur- und alterungsbeständiger als eine große Anzahl der bisher üblichen Isoliermittel, insbesondere als die bisher üblichen Lackfolien, die aus Celluloseestern bestanden. Gegenüber Papier hat die Methylcellulose eine wesentlich erhöhte Durchschlagfestigkeit, da die daraus hergestellten Überzüge außerordentlich homogen und frei von Poren sind.It has been shown that these 'methylcellulose layers have a very have a low loss factor which is better than the loss factor of the common ones Insulating varnishes. The main advantages of Use of methyl cellulose The easy solubility of methylcellulose in the Initial state in water. In place of the expensive solvents for the previously Usual insulating materials that may be used in the manufacture of insulating materials Making it explosive and flammable occurs when using methyl cellulose just water. The resulting methyl cellulose layer is more temperature and aging resistant as a large number of the isolating agents used hitherto, in particular than those hitherto customary lacquer films, which consisted of cellulose esters. Compared to paper, the Methyl cellulose has a significantly increased dielectric strength, since the made from it Coatings are extremely homogeneous and free from pores.

Claims (1)

PATENTANSPRÜCHE: r. Elektrische Isolierung, dadurch gekennzeichnet, daß als Isolierstoff in gelöstem Zustand aufgetragene Methylcellulose verwendet ist. a. Elektrische Isolierung gemäß Anspruch r, dadurch gekennzeichnet, daß die Methylcellulose um den leitenden Körper herumgepreßt ist. 3. Elektrische !Isolierung gemäß Anspruch z, dadurch gekennzeichnet, daß die Methylcellulose auf den leitenden Körper aufgestrichen ist. PATENT CLAIMS: r. Electrical insulation, characterized in that methyl cellulose applied in the dissolved state is used as the insulating material. a. Electrical insulation according to claim r, characterized in that the methyl cellulose is pressed around the conductive body. 3. Electrical! Insulation according to claim z, characterized in that the methyl cellulose is brushed onto the conductive body.
DEB9508D 1941-05-30 1941-05-30 Electrical insulation Expired DE866356C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB9508D DE866356C (en) 1941-05-30 1941-05-30 Electrical insulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB9508D DE866356C (en) 1941-05-30 1941-05-30 Electrical insulation

Publications (1)

Publication Number Publication Date
DE866356C true DE866356C (en) 1953-02-09

Family

ID=6956384

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB9508D Expired DE866356C (en) 1941-05-30 1941-05-30 Electrical insulation

Country Status (1)

Country Link
DE (1) DE866356C (en)

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