EP0151904A1 - Insulated electric cord - Google Patents

Insulated electric cord Download PDF

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Publication number
EP0151904A1
EP0151904A1 EP84810626A EP84810626A EP0151904A1 EP 0151904 A1 EP0151904 A1 EP 0151904A1 EP 84810626 A EP84810626 A EP 84810626A EP 84810626 A EP84810626 A EP 84810626A EP 0151904 A1 EP0151904 A1 EP 0151904A1
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EP
European Patent Office
Prior art keywords
halogen
free
insulated
electrical line
insulation
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EP84810626A
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German (de)
French (fr)
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EP0151904B1 (en
Inventor
Hans R. Studer
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Huber and Suhner AG
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Huber and Suhner AG
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • 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
    • H01B3/30—Insulators 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
    • H01B3/303—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302
    • H01B3/305—Polyamides or polyesteramides
    • 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
    • H01B3/30—Insulators 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
    • H01B3/42—Insulators 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 polyesters; polyethers; polyacetals
    • H01B3/421—Polyesters
    • 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
    • H01B3/30—Insulators 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
    • H01B3/42—Insulators 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 polyesters; polyethers; polyacetals
    • H01B3/427—Polyethers
    • 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
    • H01B3/30—Insulators 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
    • H01B3/44—Insulators 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
    • H01B3/441—Insulators 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 alkenes

Definitions

  • the invention relates to an electrical line with halogen-free, heat-resistant and flame-retardant insulation, which has improved resistance to liquid media and mechanical stress.
  • halogen-free insulation materials e.g. Polyethylene, ethylene-propylene terpolymer, etc. used. It is also known that the solvent resistance and also the short-term temperature resistance of these materials can be improved by crosslinking. As is also known, the flame resistance of halogen-free insulation materials is at least largely achieved by adding metal hydrates (e.g. aluminum oxytrihydrate, magnesium hydroxide).
  • the aim of the present invention is to overcome the disadvantages of the previously known heat-resistant, to fix flame-retardant, halogen-free, insulated cables.
  • a first halogen-free insulation material is additionally protected by a second insulation material made of polyamide, a thermoplastic, halogen-free polyester elastomer, for example "Hytrel 4056" from DuPont, or an aromatic, halogen-free polyether, such as "PEEK” from ICI becomes.
  • the material for the protective layer is chosen more favorably, the abrasion resistance and the lubricity of the electrical line insulated in this way with two layers can be improved.
  • Polyamide 6.6 i.e. Polyhexamethylene adipamide and polyamide 12, i.e. Polylaurin lactam.
  • the first insulation layer is advantageously produced in a thickness of approximately 0.2 to 2 mm, while the outer protective layer can be relatively thin and is generally approximately 0.1 to 0.5 mm.
  • a copper strand made of 50 individual wires with a diameter of 0.25 mm and a total cross section of 2.5 mm 2 and a diameter of 2.1 mm was used in the usual way a first insulation layer made of up to approx. 50 "Radox-125" copolymer filled with aluminum oxytrihydrate ("Radox 125" is the registered trademark for polyolefin copolymers from Huber & Suhner AG), so that the outside diameter of line 3, was 6 mm.
  • the insulation layer was then cross-linked by exposure to high-energy electron beams at a dose of 5 to 20 Mrad.
  • a 0.1 mm thick protective layer made of polyamide 6.6 (eg type "Zytel BK 157", supplier DuPont) was placed on the electrical line thus obtained, so that a double-insulated electrical line with an outer diameter of 3.8 mm was produced has been.
  • the double layer insulated line was stored in ASTM No. 2 mineral oil at a temperature of 100 ° C for 72 hours and in diesel oil at a temperature of 70 ° C for 168 hours. Immediately afterwards, the line was subjected to a winding test around a metal mandrel, the diameter of which corresponds to three times the line diameter, without the samples showing any change.
  • the flame retardancy test according to the publication IEC 332-1 was optimally fulfilled by the double-layer insulated cable.
  • a copper strand made of 50 individual wires of 0.25 mm diameter with a total cross section of 2.5 mm and a diameter of 2.1 mm was made in the usual way with a first insulation layer made of "Radox-125 filled with up to about 50% aluminum oxytrihydrate "Copolymer, so that the outer diameter of the line was 3.2 mm.
  • the insulation layer was then cross-linked by the action of high-energy electron beams with a dose of 5 to 20 Mrad.
  • a 0.3 mm thick protective layer made of polyamide 6.12 (eg type L20H from Ems-Chemie AG) was placed on the electrical line thus obtained, so that a double-layer insulated electrical line with an outer diameter of 3.8 mm was produced .
  • Example 2 After storage in mineral oil and diesel oil, as described in Example 1, the lines according to Example 2 showed no changes.
  • Lines according to Examples 1 and 2 are also resistant to refrigerants (e.g. "Freon” from DuPont).
  • Lines according to Example 2 are resistant to termite damage.
  • a copper strand made of 50 individual wires of 0.25 mm diameter with a total cross section of 2.5 mm 2 and a diameter of 2.1 mm was made in the usual way with a first insulation layer with up to approx. 50% "Radox-125 filled with aluminum oxytrihydrate "Copolymer, so that the outer diameter of the line was 3.2 to 3.4 mm.
  • the double-layer line is water-resistant in accordance with the requirements of the publication ICEA-S-68 and resistant to mineral oil and diesel oil, which - as described in Example 1 - was examined.
  • Example 1 The abrasion test requirements described in Example 1 are also met.
  • the permanent heat resistance of the line is 125 ° C.
  • a copper strand made of 50 individual wires with a diameter of 0.25 mm and a total cross section of 2.5 mm 2 with a diameter of 2.1 mm was coated in the usual way with a first insulation layer made of "Radox- filled with up to 50% aluminum oxytrihydrate. 125 "copolymer, so that the outer diameter of the line was 3.6 mm.
  • a 0.1 mm thick protection was extruded onto the electrical line thus obtained layer made of aromatic polyether (eg type "PEEK” from ICI), so that a double-layer insulated electrical line with an outer diameter of 3.8 mm was produced.
  • the double-layer line is water-resistant in accordance with the requirements of publication ICEA-S-68 and resistant to mineral oil and diesel oil and gasoline (test as described in example 1).
  • Example 1 The abrasion test requirements as described in Example 1 were also met. Likewise those of the flame test according to the publication IEC 332-1.
  • the permanent heat resistance of the line is 12 5 ° C.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Insulating Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

1. Insulated electric conductor with flame-resistant, halogen-free insulation, characterized in that it comprises an inner insulation layer of halogen-free, cross-linked polyolefin-copolymer and an outer protective layer of polyamide 6.6 or polyamide 12, a thermoplastic, halogen-free polyester elastomer or a halogen-free aromatic polyester.

Description

Die Erfindung betrifft eine elektrische Leitung mit halogenfreier, wärmebeständiger und flammwidriger Isolation, welche verbesserte Widerstandsfähigkeit gegen flüssige Medien und mechanische Beanspruchungen aufweist.The invention relates to an electrical line with halogen-free, heat-resistant and flame-retardant insulation, which has improved resistance to liquid media and mechanical stress.

Für die Herstellung von isolierten, elektrischen Leitungen, die im Brandfall möglichst geringe Mengen Qualm und keine korrosiven und toxischen Gase freisetzen, werden bereits halogenfreie Isolationsmaterialien, z.B. Polyäthylen, Aethylen-Propylen-Terpolymer, usw. verwendet. Ebenfalls bekannt ist, dass die Lösungsmittelbeständigkeit sowie auch die Kurzzeittemperaturbeständigkeit dieser Materialien durch Vernetzung verbessert werden kann. Die Flammwidrigkeit halogenfreier Isolationsmaterialien wird - wie ebenfalls bekannt ist - durch Zugabe von Metallhydraten (z.B. Aluminiumoxytrihydrat, Magnesiumhydroxid) mindestens weitgehend erreicht.For the production of insulated, electrical cables that release as little smoke as possible and no corrosive and toxic gases in the event of fire, halogen-free insulation materials, e.g. Polyethylene, ethylene-propylene terpolymer, etc. used. It is also known that the solvent resistance and also the short-term temperature resistance of these materials can be improved by crosslinking. As is also known, the flame resistance of halogen-free insulation materials is at least largely achieved by adding metal hydrates (e.g. aluminum oxytrihydrate, magnesium hydroxide).

Elektrische Leitungen mit halogenfreien Isolationen, welche solche Hydrate enthalten, weisen jedoch gegenüber Leitungen mit hydratfreien Isolationsmaterialien den Nachteil einer verminderten Resistenz gegen gewisse flüssige Medien, z.B. flüssige Kohlenwasserstoffe, wie Benzin, Mineralöl, Lösungsmittel, usw., auf. Das heisst, dass diese Isolationsmaterialien nach längerer Lagerung in Mineralölen, z.B. Oel ASTM Nr. 2, bzw. Treibstoffen, z.B. Benzin, im Vergleich zu hydratfreien Materialien stärker quellen und ihre mechanische Festigkeit stärker reduziert wird. Bei längerer Lagerung im Wasser neigen hydrathaltige Isolationsmaterialien ausserdem zu grösserer Wasseraufnahme. Dies führt zu einer Verschlechterung ihrer elektrischen Eigenschaften, namentlich zur Redüktion des Isolationswiderstandes und zur Erhöhung der Dielektrizitätskonstante, was sehr unerwünscht ist.However, electrical lines with halogen-free insulation, which contain such hydrates, have compared to lines with hydrate-free insulation materials, the disadvantage of reduced resistance to certain liquid media, for example liquid hydrocarbons, such as gasoline, mineral oil, solvents, etc. This means that after long storage in mineral oils, e.g. oil ASTM No. 2, or fuels, e.g. gasoline, these insulation materials swell more than hydrate-free materials and their mechanical strength is reduced more. When stored in water for a long time, hydrated insulation materials also tend to absorb more water. This leads to a deterioration in their electrical properties, namely a reduction in the insulation resistance and an increase in the dielectric constant, which is very undesirable.

Es ist ferner bekannt, Leitungen mit einer ersten Isolationsschicht aus thermoplastischem Polyvinylchlorid und einer zweiten Schicht aus Polyamid oder mit einer ersten Schicht aus Olefinpolymer und einer zweiten Schicht aus einem vernetzten Vinylidenfluoridcopolymer herzustellen. Diese zweischichtigen Isolationsmaterialien enthalten aber ebenfalls Halogene, die im Brandfall korrosive Gase bilden.It is also known to produce lines with a first insulation layer made of thermoplastic polyvinyl chloride and a second layer made of polyamide or with a first layer made of olefin polymer and a second layer made of a crosslinked vinylidene fluoride copolymer. However, these two-layer insulation materials also contain halogens, which form corrosive gases in the event of a fire.

Ziel der vorliegenden Erfindung ist es, die erwähnten Nachteile der bisher bekannten wärmebeständigen, flammwidrigen, halogenfreien, isolierten Leitungen zu beheben. Dies geli.ngt dadurch, dass ein erstes halogenfreies Isolationsmaterial durch ein zweites Isolationsmaterial aus Polyamid, einem thermoplastischen, halogenfreien Polyesterelastomer, z.B. "Hytrel 4056" der Firma DuPont, oder einem aromatischen, halogenfreien Polyäther, wie "PEEK" der Firma ICI, zusätzlich geschützt wird. Bei günstiger Wahl des Materials für die Schutzschicht lässt sich überdies die Abriebfestigkeit und die Gleitfähigkeit der solcherart zweischichtig isolierten, elektrischen Leitung verbessern.The aim of the present invention is to overcome the disadvantages of the previously known heat-resistant, to fix flame-retardant, halogen-free, insulated cables. This is achieved in that a first halogen-free insulation material is additionally protected by a second insulation material made of polyamide, a thermoplastic, halogen-free polyester elastomer, for example "Hytrel 4056" from DuPont, or an aromatic, halogen-free polyether, such as "PEEK" from ICI becomes. If the material for the protective layer is chosen more favorably, the abrasion resistance and the lubricity of the electrical line insulated in this way with two layers can be improved.

Als für die Bildung einer Schutzschicht im Sinne der Erfindung besonders geeignete Materialien haben sich Polyamid 6.6 , d.h. Polyhexamethylenadipamid und Polyamid 12, d.h. Polylaurinlactam, erwiesen.Polyamide 6.6, i.e. Polyhexamethylene adipamide and polyamide 12, i.e. Polylaurin lactam.

Die erste Isolationsschicht wird mit Vorteil in einer Dicke von ca. 0,2 bis 2 mm hergestellt, während die äussere Schutzschicht verhältnismässig dünn sein kann und im allgemeinen etwa 0,1 bis 0,5 mm beträgt.The first insulation layer is advantageously produced in a thickness of approximately 0.2 to 2 mm, while the outer protective layer can be relatively thin and is generally approximately 0.1 to 0.5 mm.

Beispiel 1example 1

Eine Kupferlitze aus 50 Einzeldrähten von 0,25 mm Durchmesser mit einem Gesamtquerschnitt von 2,5 mm2 und einem Durchmesser von 2,1 mm, wurde auf übliche Art mit einer ersten Isolationsschicht aus mit bis zu ca. 50 mit Aluminiumoxytrihydrat gefülltem "Radox-125" -Copolymer ("Radox 125" ist das eingetragene Warenzeichen für Polyolefin-Copolymere der Firma Huber & Suhner AG) versehen, so dass der Aussendurchmesser der Leitung 3,6 mm betrug. Die Isolationsschicht wurde dann durch Einwirkung energiereicher Elektronenstrahlen mit einer Dosis von 5 bis 20 Mrad vernetzt. Auf die so erhaltene elektrische Leitung wurde durch Extrusion eine 0,1 mm dicke Schutzschicht aus Polyamid 6.6 (z.B. Typ "Zytel BK 157", Lieferant DuPont) gelegt, so dass eine doppelt isolierte, elektrische Leitung mit einem Aussendurchmesser von 3,8 mm erzeugt wurde.A copper strand made of 50 individual wires with a diameter of 0.25 mm and a total cross section of 2.5 mm 2 and a diameter of 2.1 mm was used in the usual way a first insulation layer made of up to approx. 50 "Radox-125" copolymer filled with aluminum oxytrihydrate ("Radox 125" is the registered trademark for polyolefin copolymers from Huber & Suhner AG), so that the outside diameter of line 3, Was 6 mm. The insulation layer was then cross-linked by exposure to high-energy electron beams at a dose of 5 to 20 Mrad. A 0.1 mm thick protective layer made of polyamide 6.6 (eg type "Zytel BK 157", supplier DuPont) was placed on the electrical line thus obtained, so that a double-insulated electrical line with an outer diameter of 3.8 mm was produced has been.

Die doppelschichtig isolierte Leitung wurde während 72 Stunden in Mineralöl des Typs ASTM Nr. 2 bei einer Temperatur von 100°C und in Dieselöl während 168 Stunden bei einer Temperatur von 70°C gelagert. Unmittelbar anschliessend wurde die Leitung einer Wickelprüfung um einen Metalldorn, dessen Durchmesser dem dreifachen Leitungsdurchmesser entspricht, unterzogen, ohne dass dabei die Proben eine Veränderung aufwiesen.The double layer insulated line was stored in ASTM No. 2 mineral oil at a temperature of 100 ° C for 72 hours and in diesel oil at a temperature of 70 ° C for 168 hours. Immediately afterwards, the line was subjected to a winding test around a metal mandrel, the diameter of which corresponds to three times the line diameter, without the samples showing any change.

Der Abtriebtest nach der deutschen Norm VG 95218, mit einer 0,3 mm dicken Klinge, belastet mit 0,6 kg, ergab bei 1000 Abriebhüben eine Abriebtiefe von maximal 0,2 mm, gegenüber 0,5 mm bei der ungeschützten Isolationsschicht.The stripping test according to the German standard VG 95218, with a 0.3 mm thick blade, loaded with 0.6 kg, showed with 1000 abrasion strokes a maximum abrasion depth of 0.2 mm, compared to 0.5 mm for the unprotected insulation layer.

Die Flammwidrigkeitsprüfung nach der Publikation IEC 332-1 wurde von der doppelschichtig isolierten Leitung bestens erfüllt.The flame retardancy test according to the publication IEC 332-1 was optimally fulfilled by the double-layer insulated cable.

Beispiel 2Example 2

Eine Kupferlitze aus 50 Einzeldrähten von 0,25 mm Durchmesser mit einem Gesamtquerschnitt von 2,5 mm und einem Durchmesser von 2,1 mm wurde auf übliche Art mit einer ersten Isolationsschicht aus mit bis zu ca. 50 % mit Aluminiumoxytrihydrat gefülltem "Radox-125"-Copolymer versehen, so dass der Aussendurchmesser der Leitung 3,2 mm betrug. Die Isolationsschicht wurde dann durch die Einwirkung energiereicher Elektronenstrahlen mit einer Dosis von 5 bis 20 Mrad vernetzt. Auf die so erhaltene elektrische Leitung wurde durch Extrusion eine 0,3 mm dicke Schutzschicht aus Polyamid 6.12 (z.B. Typ L20H der Firma Ems-Chemie AG) gelegt, so dass eine doppelschichtig isolierte, elektrische Leitung mit einem Aussendurchmesser von 3,8 mm erzeugt wurde.A copper strand made of 50 individual wires of 0.25 mm diameter with a total cross section of 2.5 mm and a diameter of 2.1 mm was made in the usual way with a first insulation layer made of "Radox-125 filled with up to about 50% aluminum oxytrihydrate "Copolymer, so that the outer diameter of the line was 3.2 mm. The insulation layer was then cross-linked by the action of high-energy electron beams with a dose of 5 to 20 Mrad. A 0.3 mm thick protective layer made of polyamide 6.12 (eg type L20H from Ems-Chemie AG) was placed on the electrical line thus obtained, so that a double-layer insulated electrical line with an outer diameter of 3.8 mm was produced .

Die doppelschichtige Leitung wurde auf ihre Widerstandsfähigkeit gegen die Einwirkung von Wasser mit einer Temperatur von 75°C gemäss der Publikation ICEA-S-68 geprüft (ICEA = Insulated Cable Engineers Association USA), wobei alle verlangten elektrischen Eigenschaftswerte eingehalten wurden. 'The double-layer pipe was tested for its resistance to the action of water at a temperature of 75 ° C according to the publication ICEA - S-68 tested (ICEA = Insulated Cable Engineers Association USA), whereby all required electrical property values were met. '

Nach Lagerung in Mineralöl und Dieselöl, wie in Beispiel 1 beschrieben, zeigten die Leitungen gemäss dem Ausführungsbeispiel 2 keine Veränderungen.After storage in mineral oil and diesel oil, as described in Example 1, the lines according to Example 2 showed no changes.

Der Abriebtest wurde mit den gleichen Ergebnissen wie in Beispiel 1 durchgeführt.The abrasion test was carried out with the same results as in Example 1.

Die Flammwidrigkeitsprüfung nach der Publikation IEC 332-1 wurde sicher erfüllt.The flame retardancy test according to the publication IEC 332-1 was surely fulfilled.

Leitungen nach den Beispielen 1 und 2 sind ausserdem beständig gegen Kältemittel (z.B. "Freon" der Firma DuPont).Lines according to Examples 1 and 2 are also resistant to refrigerants (e.g. "Freon" from DuPont).

Leitungen nach Beispiel 2 sind beständig gegen Termitenfrass.Lines according to Example 2 are resistant to termite damage.

Beispiel 3Example 3

Eine Kupferlitze aus 50 Einzeldrähten von 0,25 mm Durchmesser mit einem Gesamtquerschnitt von 2,5 mm2 und einem Durchmesser von 2,1 mm wurde auf übliche Art mit einer ersten Isolationsschicht mit bis zu ca. 50 % mit Aluminiumoxytrihydrat gefülltem "Radox-125" -Copolymer versehen, so dass der Aussendurchmesser der Leitung 3,2 bis 3,4 mm betrug. Auf die so erhaltene elektrische Leitung wurde durch Extrusion eine 0,2 bis 0,3 mm dicke Schutzschicht aus thermoplastischem Polyesterelastoner (z.B. Typ "Hytrel 4056" der Firma DuPont) gelegt, so dass eine doppelschichtig isolierte, elektrische Leitung mit einem Aussendurchmesser von 3,6 bis 3,8 mm erzeugt wurde.A copper strand made of 50 individual wires of 0.25 mm diameter with a total cross section of 2.5 mm 2 and a diameter of 2.1 mm was made in the usual way with a first insulation layer with up to approx. 50% "Radox-125 filled with aluminum oxytrihydrate "Copolymer, so that the outer diameter of the line was 3.2 to 3.4 mm. On the electrical wire thus obtained A 0.2 to 0.3 mm thick protective layer made of thermoplastic polyester elastomer (eg type "Hytrel 4056" from DuPont) was placed by extrusion, so that a double-layer insulated electrical line with an outside diameter of 3.6 to 3.8 mm was generated.

Die doppelschichtige Leitung ist wasserbeständig gemäss den Anforderungen der Publikation ICEA-S-68 und beständig gegen Mineralöl und Dieselöl, was - wie in Beispiel 1 beschrieben - untersucht wurde.The double-layer line is water-resistant in accordance with the requirements of the publication ICEA-S-68 and resistant to mineral oil and diesel oil, which - as described in Example 1 - was examined.

Die Anforderungen des Abriebtestes, wie in Beispiel 1 beschrieben, werden ebenfalls erfüllt.The abrasion test requirements described in Example 1 are also met.

Die Dauerwärmebeständigkeit der Leitung beträgt 125°C.The permanent heat resistance of the line is 125 ° C.

Beispiel 4Example 4

Eine Kupferlitze aus 50 Einzeldrähten von 0,25 mm Durchmesser mit einem Gesamtquerschnitt von 2,5 mm2 mit einem Durchmesser von 2,1 mm wurde auf übliche Art mit einer ersten Isolationsschicht aus mit bis zu ca. 50 % mit Aluminiumoxytrihydrat gefülltem "Radox-125" - Copolymer versehen, so dass der Aussendurchmesser der Leitung 3,6 mm betrug. Auf die so erhaltene elektrische Leitung wurde durch Extrusion eine 0,1 mm dicke Schutzschicht aus aromatischem Polyäther (z.B. Typ "PEEK" der Firma ICI) gelegt, so dass eine doppelschichtig isolierte, elektrische Leitung mit einem Aussendurchmesser von 3,8 mm erzeugt wurde.A copper strand made of 50 individual wires with a diameter of 0.25 mm and a total cross section of 2.5 mm 2 with a diameter of 2.1 mm was coated in the usual way with a first insulation layer made of "Radox- filled with up to 50% aluminum oxytrihydrate. 125 "copolymer, so that the outer diameter of the line was 3.6 mm. A 0.1 mm thick protection was extruded onto the electrical line thus obtained layer made of aromatic polyether (eg type "PEEK" from ICI), so that a double-layer insulated electrical line with an outer diameter of 3.8 mm was produced.

Die doppelschichtige Leitung ist wasserbeständig gemäss den Anforderungen der Publikation ICEA-S-68 und beständig gegen Mineralöl und Dieselöl und Benzin (Prüfung wie in Beispiel 1 beschrieben).The double-layer line is water-resistant in accordance with the requirements of publication ICEA-S-68 and resistant to mineral oil and diesel oil and gasoline (test as described in example 1).

Die Anorderungen des Abriebtestes, wie in Beispiel 1 beschrieben, wurden ebenfalls erfüllt. Ebenso diejenigen des Flammtestes nach der Publikation IEC 332-1.The abrasion test requirements as described in Example 1 were also met. Likewise those of the flame test according to the publication IEC 332-1.

Die Dauerwärmebeständigkeit der Leitung beträgt 125°C.The permanent heat resistance of the line is 12 5 ° C.

Claims (5)

1. Isolierte, elektrische Leitung mit flammwidriger, halogenfreier Isolation, dadurch gekennzeichnet, dass sie eine innere Isolationsschicht aus halogenfreiem, vernetztem Polyolefin-Copolymer und eine äussere Schutzschicht aus einem Polyamid, einem thermoplastischen, halogenfreien Polyesterelastomer oder einem halogenfreien aromatischen Polyäther aufweist.1. Insulated, electrical line with flame-retardant, halogen-free insulation, characterized in that it has an inner insulation layer made of halogen-free, cross-linked polyolefin copolymer and an outer protective layer made of a polyamide, a thermoplastic, halogen-free polyester elastomer or a halogen-free aromatic polyether. 2. Isolierte, elektrische Leitung nach Patentanspruch 1, dadurch gekennzeichnet, dass die äussere Schicht aus Polyhexamethylenadipamid besteht.2. Insulated, electrical line according to claim 1, characterized in that the outer layer consists of polyhexamethylene adipamide. 3. Isolierte, elektrische Leitung nach Patentanspruch 1, dadurch gekennzeichnet, dass die äussere Schicht aus Polylaurinlactam besteht.3. Insulated electrical line according to claim 1, characterized in that the outer layer consists of polylaurine lactam. 4. Isolierte, elektrische Leitung nach Patentanspruch 1, dadurch gekennzeichnet, dass die äussere Schicht aus einem thermoplastischen, halogenfreien Polyesterlastomer besteht.4. Insulated, electrical line according to claim 1, characterized in that the outer layer consists of a thermoplastic, halogen-free polyester lastomer. 5. Isolierte, elektrische Leitung nach Patentanspruch 1, dadurch gekennzeichnet, dass die äussere Schicht aus einem halogenfreien, aromatischen Polyäther besteht.5. Insulated electrical line according to claim 1, characterized in that the outer layer consists of a halogen-free, aromatic polyether.
EP19840810626 1984-02-08 1984-12-17 Insulated electric cord Expired EP0151904B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH591/84A CH664230A5 (en) 1984-02-08 1984-02-08 INSULATED, ELECTRICAL CABLE.
CH591/84 1984-02-08

Publications (2)

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EP0151904A1 true EP0151904A1 (en) 1985-08-21
EP0151904B1 EP0151904B1 (en) 1988-10-26

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EP19840810626 Expired EP0151904B1 (en) 1984-02-08 1984-12-17 Insulated electric cord

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EP (1) EP0151904B1 (en)
CH (1) CH664230A5 (en)
DE (1) DE3474878D1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2605792A1 (en) * 1986-10-23 1988-04-29 Cabeltel Cables Electro Teleco FLAME RETARDANT ELECTRIC CABLE
EP0297241A2 (en) * 1987-07-01 1989-01-04 Wilhelm Bauer Electrical insulating parts
EP0440118A2 (en) * 1990-01-31 1991-08-07 Fujikura Ltd. Electric insulated wire and cable using the same
WO1993018914A1 (en) * 1992-03-17 1993-09-30 Allied-Signal Inc. Improved flexible fire retardant multi-layer structures comprising polyolefin and polyamide layers and process for making the same
CN109486181A (en) * 2018-11-22 2019-03-19 江苏利德尔新材料科技有限公司 A kind of preparation method of antistatic high fire-retardance MC nylon composite materials
CN117637258A (en) * 2023-11-29 2024-03-01 迈特诺（马鞍山）特种电缆有限公司 Processing method of wear-resistant cable for urban rail

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH677845A5 (en) * 1988-09-23 1991-06-28 Huber+Suhner Ag

Citations (5)

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Publication number Priority date Publication date Assignee Title
GB2009488A (en) * 1977-12-02 1979-06-13 Bicc Ltd Electric cables
DE2807406B2 (en) * 1978-02-17 1979-12-20 Siemens Ag, 1000 Berlin Und 8000 Muenchen Multi-core flexible electrical cable
GB1583956A (en) * 1977-03-10 1981-02-04 Bicc Ltd Electric cables
DE3012745A1 (en) * 1980-03-28 1981-10-08 Rea Magnet Wire Co. Inc., Fort Wayne, Ind. Magnet wire with good winding and insertion properties - has a nylon-11 or nylon 12 top-coat having improved electrical properties in moisture environments
EP0103487A2 (en) * 1982-09-15 1984-03-21 RAYCHEM CORPORATION (a California corporation) Electrical insulation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1583956A (en) * 1977-03-10 1981-02-04 Bicc Ltd Electric cables
GB2009488A (en) * 1977-12-02 1979-06-13 Bicc Ltd Electric cables
DE2807406B2 (en) * 1978-02-17 1979-12-20 Siemens Ag, 1000 Berlin Und 8000 Muenchen Multi-core flexible electrical cable
DE3012745A1 (en) * 1980-03-28 1981-10-08 Rea Magnet Wire Co. Inc., Fort Wayne, Ind. Magnet wire with good winding and insertion properties - has a nylon-11 or nylon 12 top-coat having improved electrical properties in moisture environments
EP0103487A2 (en) * 1982-09-15 1984-03-21 RAYCHEM CORPORATION (a California corporation) Electrical insulation

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2605792A1 (en) * 1986-10-23 1988-04-29 Cabeltel Cables Electro Teleco FLAME RETARDANT ELECTRIC CABLE
EP0268827A1 (en) * 1986-10-23 1988-06-01 Filotex Flame-resistant electrical cable
EP0297241A2 (en) * 1987-07-01 1989-01-04 Wilhelm Bauer Electrical insulating parts
EP0297241A3 (en) * 1987-07-01 1990-06-20 Wilhelm Bauer Electrical insulating parts
EP0440118A2 (en) * 1990-01-31 1991-08-07 Fujikura Ltd. Electric insulated wire and cable using the same
EP0440118A3 (en) * 1990-01-31 1992-02-26 Fujikura Ltd. Electric insulated wire and cable using the same
EP0712139A2 (en) * 1990-01-31 1996-05-15 Fujikura Ltd. Electric insulated wire and cable using the same
EP0712139A3 (en) * 1990-01-31 1998-03-25 Fujikura Ltd. Electric insulated wire and cable using the same
WO1993018914A1 (en) * 1992-03-17 1993-09-30 Allied-Signal Inc. Improved flexible fire retardant multi-layer structures comprising polyolefin and polyamide layers and process for making the same
US6114036A (en) * 1992-03-17 2000-09-05 Alliedsignal Inc. Flexible fire retardant multi-layer structures comprising polyolefin and polyamide layers and process for making the same
CN109486181A (en) * 2018-11-22 2019-03-19 江苏利德尔新材料科技有限公司 A kind of preparation method of antistatic high fire-retardance MC nylon composite materials
CN117637258A (en) * 2023-11-29 2024-03-01 迈特诺（马鞍山）特种电缆有限公司 Processing method of wear-resistant cable for urban rail

Also Published As

Publication number Publication date
DE3474878D1 (en) 1988-12-01
CH664230A5 (en) 1988-02-15
EP0151904B1 (en) 1988-10-26

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