DE910677C - Electrical insulating material - Google Patents

Electrical insulating material

Info

Publication number
DE910677C
DE910677C DEA6422D DEA0006422D DE910677C DE 910677 C DE910677 C DE 910677C DE A6422 D DEA6422 D DE A6422D DE A0006422 D DEA0006422 D DE A0006422D DE 910677 C DE910677 C DE 910677C
Authority
DE
Germany
Prior art keywords
fabric
polystyrene
glued
insulating material
electrical insulating
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
DEA6422D
Other languages
German (de)
Inventor
Henry A Letteron
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.)
AEG AG
Original Assignee
AEG AG
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 AEG AG filed Critical AEG AG
Application granted granted Critical
Publication of DE910677C publication Critical patent/DE910677C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/442Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from aromatic vinyl compounds
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/48Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
    • H01B3/50Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials fabric

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Paints Or Removers (AREA)
  • Laminated Bodies (AREA)
  • Organic Insulating Materials (AREA)

Description

Elektrischer Isolierstoff Lackgewebe als elektrische Isolierstoffe sind allgemein bekannt. Zur Herstellung dieser Isolierstoffe wird ein Gewebe aus Seide, Baumwolle od. dgl. mit einem Lack, z. B. Alkydharzlack, gestrichen. Auch ist es schon bekannt, die Gewebe vor dem Lackieren z. B. mit Stärke zu leimen.Electrical insulating material Lacquer fabric as electrical insulating material are well known. A fabric is used to produce these insulating materials Silk, cotton or the like with a varnish, z. B. alkyd resin paint, painted. Even it is already known that the fabric before painting z. B. to glue with starch.

Fernerhin ist schon versucht worden, elektrische Isolierstoffe durch Streichen von Geweben mit Polystyrol herzustellen. Das Polystyrol hat aber die Eigenschaft, hart und brüchig zu werden, so daß die so z. B. hergestellten Bänder nicht zur Herstellung von elektrischen Isolationen durch Umwickeln des zu isolierenden Körpers verwendet werden können. Nun kann man zwar dem Polystyrol Weichmacher zusetzen, dadurch wird aber die Isolationsfähigkeit stark herabgesetzt.Furthermore, attempts have already been made to use electrical insulating materials To produce coating of fabrics with polystyrene. However, the polystyrene has the property to become hard and brittle, so that the z. B. produced tapes not for production used by electrical insulation by wrapping the body to be insulated can be. Now you can add plasticizers to the polystyrene, thereby but the insulation capacity is greatly reduced.

Es wurde nun gefunden, daß sehr gute Isolierstoffe erhalten werden, wenn man das Gewebe zunächst mit Polystyrol leimt (es werden dazu zweckmäßigerweise 5 bis =o °/o des Gewebegewichtes verwendet) und darauf mit einem der bekannten und erprobten Lacke streicht. Die so erhaltenen Isolierstoffe haben vor allem einen verhältnismäßig gleichmäßigen Verlustwinkel über einen großen Temperaturbereich. In der Tabelle sind einige Versuchsergebnisse angegeben, und zwar werden Gewebe, die mit Stärke geleimt und dann lackiert wurden, in Vergleich gesetzt zu solchen Geweben, die mit Polystyrol geleimt und dann mit einem Lack überzogen wurden. Verlustwinkel 8O° C ' 60° C I- 100C C I Lack Nr. i auf Gewebe geleimt mit Stärke ....... .o34 .o28 . 145 Lack Nr. i auf Gewebe geleimt mit Polystyrol ... .035 . 021 . 093 Lack Nr. 2 auf Gewebe geleimt mit Stärke ....... .o36 .o53 .o79 Lack Nr. 2 auf Gewebe geleimt mit Polystyrol ... . 024 . o18 . o28 Lack Nr. 3 auf Gewebe geleimt mit Stärke ....... .o49 . o66 .122 Lack Nr. 3 auf Gewebe geleimt mit Polystyrol ... .o31 . o18 . 031 Lack Nr. 4 auf Gewebe geleimt mit Stärke ....... . oho . o86 : 435 Lack Nr. 4 auf Gewebe geleimt mit Polystyrol ... .o34 I . 015 .094 Der Verlustwinkel wurde gemessen mit einem Wechselstrom von 6o Perioden.It has now been found that very good insulating materials are obtained if the fabric is first glued with polystyrene (it is expedient to use 5 to = o% of the weight of the fabric) and then coat it with one of the known and tried-and-tested lacquers. The insulating materials obtained in this way primarily have a relatively uniform loss angle over a wide temperature range. Some test results are given in the table, namely fabrics which have been sized with starch and then varnished in comparison with those fabrics which have been sized with polystyrene and then coated with a varnish. Loss angle 80 ° C '60 ° C I- 1 0 0 C C I. Lacquer no. I glued to fabric with thickness ....... .o34 .o28. 145 Lacquer no. I on fabric glued with polystyrene ... .035. 021. 093 Lacquer no. 2 glued to fabric with thickness ....... .o36 .o53 .o79 Lacquer no. 2 on fabric glued with polystyrene .... 024. o18. o28 Lacquer no. 3 glued to fabric with thickness ....... .o49. o66 .122 Lacquer no. 3 on fabric glued with polystyrene ... .o31. o18. 031 Lacquer no. 4 on fabric glued with starch ........ oho. o86: 435 Lacquer no. 4 on fabric glued with polystyrene ... .o34 I. 015 .094 The loss angle was measured with an alternating current of 60 periods.

Aus der Tabelle ist ersichtlich, daß der Verlustwinkel der mit Polystyrol geleimten Stoffe außergewöhnlich niedrig ist, insbesondere bei hohen Temperaturen: Die mit Polystyrol geleimten Stoffe enthalten 8 °/o Polystyrol. Die verwendeten Lacke sind Alkydharzlacke.From the table it can be seen that the loss angle is that with polystyrene size fabrics is exceptionally low, especially at high temperatures: The fabrics glued with polystyrene contain 8% polystyrene. The used Paints are alkyd resin paints.

Zur Herstellung der Isolierstoffe gemäß der Erfindung wird das Gewebe aus Wolle, Baumwolle, Leinen, Seide, Glasgewebe od. dgl. in eine Lösung von Styrol oder Polystyrol in einem geeigneten Lösungsmittel, wie z. B. Lackbenzin (mit io bis 25 °/o Styrol), getaucht. Nach Verdunsten des Lösungsmittels soll das Gewebe zweckmäßig 5 bis io Gewichtsprozent Styrol oder Polystyrol, berechnet auf das Gewebegewicht, enthalten. Das geleimte Gewebe wird dann z. B. 2 Minuten bei i5o° C getrocknet und auf heißen Walzen von Zoo bis 13o° C kalandert. Daraufhin wird auf das geleimte Gewebe die Lacklösung aufgebracht, z. B. durch Spritzen oder Streichen. Das Lacklösungsmittel wird etwa bei iio° C ausgetrieben. Der erhaltene Isolierstoff läßt sich gut biegen, hat hohe Öl-, Feuchtigkeits- und Alterungsbeständigkeit und eine hohe dielektrische Festigkeit.To produce the insulating materials according to the invention, the fabric of wool, cotton, linen, silk, glass fabric or the like in a solution of styrene or polystyrene in a suitable solvent, such as. B. mineral spirits (with io up to 25% styrene), immersed. After the solvent has evaporated, the fabric should expediently 5 to 10 percent by weight of styrene or polystyrene, calculated on the weight of the fabric, contain. The glued fabric is then z. B. 2 minutes at i5o ° C and dried Calendered on hot rollers from Zoo up to 130 ° C. Then it is glued on Tissue applied the lacquer solution, z. B. by spraying or painting. The paint solvent is driven out at about 10 ° C. The insulating material obtained is easy to bend, has high oil, moisture and aging resistance and a high dielectric Strength.

Besonders niedere Verlustwinkel werden erhalten, wenn Lacke verwendet werden, die auf der Basis von Pentaerythritharzen hergestellt sind. Bei Verwendung von Lacken mit hohem Fettsäuregehalt oder mit einem Gehalt an Ölen von niederer Jodzahl sind besonders biegsame Isolierstoffe erzielbar.Particularly low loss angles are obtained when paints are used made on the basis of pentaerythritol resins. Using of paints with a high fatty acid content or with a low oil content Iodine number, particularly flexible insulating materials can be achieved.

Claims (3)

PATENTANSPR(rCHE: i. Elektrischer Isolierstoff, dadurch gekennzeichnet, daß er aus einem mit Styrol oder Polystyrol geleimten Gewebe besteht, das mit einem Isolierlack überzogen oder imprägniert ist. PATENT CLAIM: i.Electrical insulating material, characterized that it consists of a fabric glued with styrene or polystyrene, which with a Insulating varnish is coated or impregnated. 2. Elektrischer Isolierstoff nach Anspruch i, dadurch gekennzeichnet, daß das geleimte Gewebe 5 bis 2o °/o Styrol oder Polystyrol enthält. 2. Electrical insulating material according to claim i, characterized in that the glued fabric 5 to 2o% styrene or polystyrene contains. 3. Elektrischer Isolierstoff nach Anspruch i und 2, dadurch gekennzeichnet, daß der Decklack ein mit Öl modifiziertes Alkydharz ist.3. Electrical insulating material according to claim i and 2, characterized in that that the topcoat is an oil modified alkyd resin.
DEA6422D 1939-12-16 1940-12-17 Electrical insulating material Expired DE910677C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US910677XA 1939-12-16 1939-12-16

Publications (1)

Publication Number Publication Date
DE910677C true DE910677C (en) 1954-05-06

Family

ID=22225821

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA6422D Expired DE910677C (en) 1939-12-16 1940-12-17 Electrical insulating material

Country Status (1)

Country Link
DE (1) DE910677C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1113725B (en) * 1955-06-23 1961-09-14 Westinghouse Electric Corp Process for the production of a rubber-elastic silicone insulating tape
DE1178915B (en) * 1957-08-19 1964-10-01 Gen Electric Electrical insulating material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1113725B (en) * 1955-06-23 1961-09-14 Westinghouse Electric Corp Process for the production of a rubber-elastic silicone insulating tape
DE1178915B (en) * 1957-08-19 1964-10-01 Gen Electric Electrical insulating material

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