DE2709139A1 - Voltage stabiliser used in high tension cable insulation - based on polyolefin contg. di:aryl ketone carbonic acid or its ester - Google Patents

Voltage stabiliser used in high tension cable insulation - based on polyolefin contg. di:aryl ketone carbonic acid or its ester

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Publication number
DE2709139A1
DE2709139A1 DE19772709139 DE2709139A DE2709139A1 DE 2709139 A1 DE2709139 A1 DE 2709139A1 DE 19772709139 DE19772709139 DE 19772709139 DE 2709139 A DE2709139 A DE 2709139A DE 2709139 A1 DE2709139 A1 DE 2709139A1
Authority
DE
Germany
Prior art keywords
ester
carbonic acid
voltage
high tension
cable insulation
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.)
Withdrawn
Application number
DE19772709139
Other languages
German (de)
Inventor
Johann Dipl Chem Wartusch
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DE19772709139 priority Critical patent/DE2709139A1/en
Publication of DE2709139A1 publication Critical patent/DE2709139A1/en
Withdrawn legal-status Critical Current

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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
    • H01B3/30—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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof

Abstract

Electric voltage stabiliser used in high tension cable insulation is based on a polyolefin contg. 0.1-5 (0.5-2) wt. % of diaryl ketone carbonic acid or its ester. Since the stabiliser at the operative temp. of the cables is a solid it stays permanently in the cable and reduces diaelectric losses. Stabiliser may also include benzophenon-2-carbonic acid or an ester derived from an aromatic alcohol and the aromatic nuclei may carry other substits.

Description

Licentia Patent-Verwaltungs-GmbH. Theodor-Stern-Kai 1Licentia Patent-Verwaltungs-GmbH. Theodor-Stern-Kai 1

6000 Frankfurt/M. 706000 Frankfurt / M. 70

Ka/schz KS 77/206Ka / schz KS 77/206

1.3.19771.3.1977

Verwendung eines elektrischen Spannungsstabilisators in einer Hochspannungsiso!ation Use of an electrical voltage stabilizer in a high voltage iso! Ation

Die Erfindung bezieht sich auf die Verwendung eines elektrischen Spannungsstabilisators in einer Hochspannungskabelisolation auf Polyolefinbasis, insbesondere aus vernetzten! Polyäthylen.The invention relates to the use of an electrical voltage stabilizer in high voltage cable insulation Polyolefin base, especially from cross-linked! Polyethylene.

Die meisten bekannten Spannungsstabilisatoren weisen Nachteile in unterschiedlicher Richtung auf. Sie sind bei erhöhter Temperatur nicht wirksam und/oder verflüchtigen sich im Laufe der Zeit bzw. lassen sich in peroxidisch vernetzten Mischungen nicht verwenden, weil sie vom Vernetzungsmittel zerstört werden oder ihrerseits die peroxidische Vernetzung inhibieren.Most of the known voltage stabilizers have disadvantages in different directions. They are not effective at elevated temperatures and / or evaporate over time or cannot be used in peroxidically crosslinked mixtures because they are destroyed by the crosslinking agent or in turn inhibit peroxidic crosslinking.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen geeigneten Spannungsstabilisator zu finden, der sich beim Betrieb der Kabelisolation nicht verflüchtigt und der insbesondere bei der Vernetzung der Polyolefinisolation des Kabels den Vernetzungsvorgang nicht inhibiert sowie seinerseits vom Peroxid nicht unwirksam gemacht wird.The present invention is based on the object of a suitable To find a voltage stabilizer that does not volatilize when the cable insulation is in operation, and especially when it comes to the Crosslinking of the polyolefin insulation of the cable does not inhibit the crosslinking process and in turn is not ineffective by the peroxide is made.

Gelöst wird die Aufgabe dadurch, daß der Spannungsstabilisator aus einer Dia^ryl-Keton-Carbonsäure bzw. deren Ester besteht bzw. diese enthält, wobei er in einer Menge von 0,1 bis 5 Gew.96, vorzugsweise 0,5 bis 2 Gew.96, bezogen auf die Isolation, Anwendung findet.The object is achieved in that the voltage stabilizer off a dia ^ ryl ketone carboxylic acid or its ester consists or this contains, it being in an amount of 0.1 to 5 wt.96, preferably 0.5 to 2 wt.96, based on the insulation, is used.

809836/0211809836/0211

Ks 77/206Ks 77/206

. 3. 3

Der erfindungsgemäße Stabilisator ist eine bei den in Frage kommenden Temperaturen praktisch nicht flüchtige Substanz, so daß ein Verbleiben in der Isolierung und damit die Wirksamkeit der Stabilisierung gewährleistet ist. Ein weiterer Vorteil einer solchen stabilisatorhaltigen Mischung ist ein niedriger dielektrischer Verlust bei der Kabelbetriebstemperatur.The stabilizer according to the invention is a substance which is practically non-volatile at the temperatures in question, see above that it remains in the insulation and thus the effectiveness of the stabilization is guaranteed. Another benefit of a such a stabilizer-containing mixture is a low dielectric one Loss in cable operating temperature.

Der Stabilisator kann einer Mischung einverleibt werden oder auch auf einfache Weise in einer Isoliermischung aus VPE erzeugt werden, indem ein geeignetes Peroxid als Vernetzungsmittel verwendet wird, zum Beispiel: 3-t-Butylperoxi-3-phenylphthalid, das als spannungsstabil i si er ende Substanz eine Diarylketon-Carbonsäure freisetzt, nämlich Benzophenon—2-carbonsäure.The stabilizer may or may not be incorporated into a mixture can be easily produced in an insulating mixture from VPE by using a suitable peroxide as a crosslinking agent, For example: 3-t-butylperoxy-3-phenylphthalide, which releases a diaryl ketone carboxylic acid as a stress-stable substance, namely benzophenone-2-carboxylic acid.

Ausführungsbeispiel:Embodiment:

Polymerpolymer

Zusatzadditive

VernetzungNetworking

Treeing-Beständigkeit (Gauß-MittelwertTreeing resistance (Gaussian mean

Polyäthylen vom Η-Typ der Dichte
8 Polyethylene of Η type of density
8th

ohne Zusatzwithout addition

2 % Benzophenon- 2-Carbonsäur e * )2 % benzophenone-2-carboxylic acid *)

keineno

(Gelgehalt 88 *) (Gel content 88 *)

< 10 kV < 10 kV

15 kV15 kV

*) durch Zersetzung beim Vernetzungsvorgang freigesetzt.*) released by decomposition during the crosslinking process.

Aus der vorstehenden Tabelle ist zu ersehen, daß der erfindungsgemäße Zusatz von Benzophenon-2-carbonsäure die Spannungsstabilität eines VPE's wesentlich verbessert, indem schon bei geringem Stabilisatorgehalt der Mittelwert der Treeingbeständigkeit von — 10 kV des Basis-Polyäthylens auf 15 kV der beanspruchten Mischung heraufgesetzt wird.From the table above it can be seen that the addition of benzophenone-2-carboxylic acid according to the invention improves voltage stability of a VPE is significantly improved by the mean value of the treeing resistance of -10 kV even with a low stabilizer content of the base polyethylene is raised to 15 kV of the claimed mixture.

In gleicher Weise können anstelle der Carbonsäure auch deren Ester als Stabilisatoren eingesetzt werden, um eine Verträglichkeit in der Isolierschicht zu erhalten.In the same way, instead of the carboxylic acid, its esters can also be used are used as stabilizers to ensure compatibility in the Maintain insulating layer.

809836/0211809836/0211

KSKS

77Λ#09139 77Λ # 09139

Der alkoholische Bestandteil des Esters kann wiederum einen Aromaten enthalten, weil Aromaten offenkundig als Spannungsstabilisatoren besonders wirkungsvoll sind. So kann vorteilhaft ein Benzylester als Spannungsstabilisator Anwendung finden.The alcoholic component of the ester can in turn contain an aromatic because aromatics are evidently particularly effective as voltage stabilizers. So it can be beneficial a benzyl ester can be used as a voltage stabilizer.

Die erfindungsgemäßen Stabilisatoren sind bereits in geringen Mengen von 0,1 Gew.% wirksam; zweckmäßig werden bis zu 5 Gew.% der Isoliermischung zugegeben, vorteilhaft sollten 0,5 bis 2 Gew.% Anwendung finden, über 5 % Zusatz kann die dielektrischen Werte nachteilig beeinflussen.The stabilizers according to the invention are effective even in small amounts of 0.1% by weight; It is advisable to add up to 5% by weight of the insulating mixture, advantageously 0.5 to 2% by weight should be used, an addition of more than 5% can adversely affect the dielectric values.

Ferner können weitere Substituenten an den aromatischen Kernen des Stabilisators vorhanden sein, um zum Beispiel die Elektronen- Resonanzfähigkeit des Systems - und damit die stabilisierende Wirkung zu erhöhen. Als solche Substituenten kommen beispielsweise Acetyl- oder Aminogruppen in Frage.Furthermore, other substituents on the aromatic nuclei of the Stabilizer should be present, for example the electron resonance capacity of the system - and thus the stabilizing effect to increase. Such substituents include, for example, acetyl or amino groups in question.

3 Seiten Beschreibung
5 Patentansprüche3 pages description
5 claims

809836/021 1809836/021 1

Claims (5)

Licentia Patent-Verwaltungs-GmbH. Theodor-Stern-Kai 1 6000 Frankfurt/M. 70 Ka/schz KS 77/206Licentia Patent-Verwaltungs-GmbH. Theodor-Stern-Kai 1 6000 Frankfurt / M. 70 Ka / schz KS 77/206 1.3«19771.3 «1977 PatentansprücheClaims )J Verwendung eines elektrischen Spannungsstabilisators in einer Hochspannungsisolation, insbesondere auf Polyolefinbasis, dadurch gekennzeichnet, daß er aus Diarylketon-Carbonsäure bzw. deren Ester in einer Menge von 0,1 bis 5 Gew.%, vorzugsweise 0,5 bis 2 Gew.% besteht bzw. diese enthält.) J Use of an electrical voltage stabilizer in high-voltage insulation, especially based on polyolefins, characterized in that it is made from diaryl ketone carboxylic acid or its ester in an amount of 0.1 to 5% by weight, preferably 0.5 to 2 wt.% Is or contains this. 2) Verwendung eines Spannungsstabilisators nach Anspruch 1, dadurch gekennzeichnet, daß der Stabilisator Benzophenon-2-carbonsäure enthält.2) Use of a voltage stabilizer according to claim 1, characterized characterized in that the stabilizer contains benzophenone-2-carboxylic acid. 3) Verwendung eines Spannungsstabilisators nach Anspruch 1 bzw. 2, dadurch gekennzeichnet, daß er einen mit aromatischem Alkohol gebildeten Ester enthält.3) Use in that it contains an ester formed with an aromatic alcohol of a voltage stabilizer according to claim 1 or 2, characterized. 4) Verwendung eines Spannungsstabilisators nach Anspruch 3, dadurch gekennzeichnet, daß die aromatischen Kerne weitere Substituenten tragen.4) Use of a voltage stabilizer according to claim 3, characterized characterized in that the aromatic nuclei carry further substituents. 5) Verwendung eines Spannungsstabilisators nach Anspruch 1 bis 1I1 dadurch gekennzeichnet, daß der Stabilisator aus anderen Substanzen in der Hochspannungsisolation gebildet ist.5) use of a voltage stabilizer according to claim 1 1 I 1 characterized in that the stabilizer is formed from other substances in the high-voltage insulation. 809836/0211809836/0211 ORIGINAL INSPECTEDORIGINAL INSPECTED
DE19772709139 1977-03-03 1977-03-03 Voltage stabiliser used in high tension cable insulation - based on polyolefin contg. di:aryl ketone carbonic acid or its ester Withdrawn DE2709139A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19772709139 DE2709139A1 (en) 1977-03-03 1977-03-03 Voltage stabiliser used in high tension cable insulation - based on polyolefin contg. di:aryl ketone carbonic acid or its ester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772709139 DE2709139A1 (en) 1977-03-03 1977-03-03 Voltage stabiliser used in high tension cable insulation - based on polyolefin contg. di:aryl ketone carbonic acid or its ester

Publications (1)

Publication Number Publication Date
DE2709139A1 true DE2709139A1 (en) 1978-09-07

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ID=6002620

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4370517A (en) 1977-12-29 1983-01-25 Hitachi Cable Limited Polyolefin compositions for electrical insulation
EP0074834A1 (en) * 1981-09-14 1983-03-23 E.I. Du Pont De Nemours And Company Tree-resistant ethylene polymer compositions
US4456655A (en) * 1981-09-14 1984-06-26 E. I. Du Pont De Nemours And Company Electrical cable insulated with a tree-resistant ethylene polymer composition
WO2001008166A1 (en) * 1999-07-27 2001-02-01 Pirelli Cavi E Sistemi S.P.A. Cable, in particular for transport or distribution of electrical energy and insulating composition
US6696154B2 (en) 1999-07-27 2004-02-24 Pirelli Cavi E Sistemi S.P.A. Cable, in particular for transport or distribution of electrical energy and insulating composition

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4370517A (en) 1977-12-29 1983-01-25 Hitachi Cable Limited Polyolefin compositions for electrical insulation
EP0074834A1 (en) * 1981-09-14 1983-03-23 E.I. Du Pont De Nemours And Company Tree-resistant ethylene polymer compositions
US4456655A (en) * 1981-09-14 1984-06-26 E. I. Du Pont De Nemours And Company Electrical cable insulated with a tree-resistant ethylene polymer composition
WO2001008166A1 (en) * 1999-07-27 2001-02-01 Pirelli Cavi E Sistemi S.P.A. Cable, in particular for transport or distribution of electrical energy and insulating composition
US6696154B2 (en) 1999-07-27 2004-02-24 Pirelli Cavi E Sistemi S.P.A. Cable, in particular for transport or distribution of electrical energy and insulating composition

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