FR2652194A1 - Fire-resistant electrical cable having no micaceous tape - Google Patents

Fire-resistant electrical cable having no micaceous tape Download PDF

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Publication number
FR2652194A1
FR2652194A1 FR8912268A FR8912268A FR2652194A1 FR 2652194 A1 FR2652194 A1 FR 2652194A1 FR 8912268 A FR8912268 A FR 8912268A FR 8912268 A FR8912268 A FR 8912268A FR 2652194 A1 FR2652194 A1 FR 2652194A1
Authority
FR
France
Prior art keywords
parts
corresponding molar
polymer
molar amount
insulator
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Withdrawn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
FR8912268A
Other languages
French (fr)
Inventor
Demay Jean-Noel
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.)
Nexans France SAS
Original Assignee
Alcatel Cable SA
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 Alcatel Cable SA filed Critical Alcatel Cable SA
Priority to FR8912268A priority Critical patent/FR2652194A1/en
Publication of FR2652194A1 publication Critical patent/FR2652194A1/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Withdrawn legal-status Critical Current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
    • 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
    • H01B3/44—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

Abstract

Fire-resistant electrical cables comprising individual conductors surrounded with an insulation made of crosslinked or vulcanised polymer, possibly a glass-silk tape surrounding the assembly of insulated conductors, and an external sheath. Its insulation contains, based on 100 parts by weight of polymer, from 50 to 75 parts of zinc borate, from 30 to 105 parts of calcined kaolin, from 1 to 1.5 parts of a coupling agent for coupling between the polymer and the mineral filler or fillers, formed by vinyltrimethoxyethoxysilane or a corresponding molar quantity of a vinyltetraalkoxysilane, 2 to 3 parts of a crosslinking agent formed by dicumyl peroxide or a corresponding molar quantity of another organic peroxide, approximately 1.5 parts of a crosslinking activator formed by trimethylolpropane trimethacrylate or a corresponding molar quantity of another alkyl acrylate, 1 to 2 parts of an antioxidant formed by polymerised dihydrotrimethylquinoline or a corresponding molar quantity of another amine, and 10 to 20 parts of a paraffinic plasticiser.

Description

La présente invention concerne un câble électrique résistant au feu, comprenant des conducteurs individuels entourés d'un isolant en polymère réticulé ou vulcanisé, éventuellement un ruban en soie de verre entourant l'assemblage des conducteurs isolés et une gaine externe. De tels câbles doivent pouvoir assurer le transport du courant électrique pendant un certain temps, lorsqu'ils sont soumis à la chaleur d'un incendie et portés à des températures voisines de 7500C.  The present invention relates to a fire-resistant electrical cable, comprising individual conductors surrounded by an insulator of crosslinked or vulcanized polymer, optionally a glass silk ribbon surrounding the assembly of the insulated conductors and an external sheath. Such cables must be able to transport electric current for a certain time, when they are subjected to the heat of a fire and brought to temperatures in the region of 7500C.

Les câbles électriques connus de ce genre comportent à partir des conducteurs individuels un ruban en soie de verre micacé enroulé sur la corde du conducteur, un isolant en polymère réticulé ou vulcanisé, éventuellement un ruban de soie de verre entourant l'assemblage des conducteurs isolés et une gaine externe. Le second ruban de soie de verre est nécessaire pour les câbles de faible
2 section droite, inférieure ou égale à 16 mm . De tels câbles sont toutefois coûteux, du fait de la présence nécessaire du ruban de soie de verre micacé.Known electrical cables of this kind comprise, from the individual conductors, a micaceous glass silk ribbon wound on the conductor cord, an insulation of crosslinked or vulcanized polymer, possibly a glass silk ribbon surrounding the assembly of the insulated conductors and an outer sheath. The second glass silk ribbon is required for low cables
2 straight section, less than or equal to 16 mm. Such cables are however expensive, because of the necessary presence of the micaceous glass silk ribbon.

La présente invention a pour but de procurer un câble électrique présentant une aussi bonne résistance au feu, mais notablement moins coûteux, du fait qu'il ne comporte pas de ruban micacé. The object of the present invention is to provide an electric cable having as good fire resistance, but notably less expensive, because it does not include micaceous tape.

Le câble selon l'invention est caractérisé en ce que son isolant contient, rapportés à 100 parties en poids de polymère réticulé ou vulcanisé, de 50 à 75 parties de borate de zinc, 30 à 105 parties de Kaolin calciné, de 1 à 1,5 partie d'un agent de liaison entre le polymère et la ou les charges minérales formé par le vinyltriméthoxy éthoxy silane ou une quantité molaire correspondante d'un vinyltétraalcoxysilane, 2 à 3 parties d'un agent de réticulation formé par le peroxyde de dicumyle ou une quantité molaire correspondante d'un autre peroxyde organique, environ 1,5 partie d'un activateur de réticulation formé par le triméthacrylate de triméthylolpropane ou une quantité molaire correspondante d'un autre acrylate d'alcoyle, 1 à 2 parties d'un agent antioxygène formé par la dihydrotriméthyl-quinoléine polymèrisée ou une quantité molaire correspondante d'une autre amine, et 10 à 20 parties d'un plastifiant paraffinique. The cable according to the invention is characterized in that its insulator contains, relative to 100 parts by weight of crosslinked or vulcanized polymer, from 50 to 75 parts of zinc borate, 30 to 105 parts of calcined Kaolin, from 1 to 1, 5 part of a bonding agent between the polymer and the mineral filler (s) formed by vinyltrimethoxy ethoxy silane or a corresponding molar amount of a vinyltetraalkoxysilane, 2 to 3 parts of a crosslinking agent formed by dicumyl peroxide or a corresponding molar amount of another organic peroxide, about 1.5 parts of a crosslinking activator formed by trimethylolpropane trimethacrylate or a corresponding molar amount of another alkyl acrylate, 1 to 2 parts of an agent antioxidant formed by polymerized dihydrotrimethyl quinoline or a corresponding molar amount of another amine, and 10 to 20 parts of a paraffinic plasticizer.

I1 répond en outre de préférence à au moins l'une des caractéristiques suivantes
- Son isolant contient en outre jusqu'à 5 parties d'oxyde de zinc.I1 preferably also meets at least one of the following characteristics
- Its insulator also contains up to 5 parts of zinc oxide.

- Son isolant contient en outre jusqu'à 20 parties d'un caoutchouc vulcanisable formé par un organopolysiloxane. - Its insulator also contains up to 20 parts of vulcanizable rubber formed by an organopolysiloxane.

- Son isolant contient en outre jusqu'à 75 parties de trihydrate d'alumine ou une quantité molaire correspondante d'un autre hydrate métallique. - Its insulator also contains up to 75 parts of alumina trihydrate or a corresponding molar amount of another metal hydrate.

On a constaté que les additifs minéraux incorporés au polymère se transformaient sous l'effet de la chaleur d'un incendie en matériau à caractéristiques réfractaires, assurant une isolation thermique électrique satisfaisante jusqu'à 75O0C. I1 est inutile que la gaine externe contienne des constituants halogènés, générateurs de fumées toxiques. It has been observed that the mineral additives incorporated in the polymer are transformed under the effect of the heat of a fire into a material with refractory characteristics, ensuring satisfactory electrical thermal insulation up to 750 ° C. It is unnecessary for the external sheath to contain halogenated constituents, which generate toxic fumes.

I1 est décrit ci-après, à titre d'exemple deux compositions d'isolant pour câble résistant au feu selon l'invention et une structure de câble électrique comportant ces isolants. I1 is described below, by way of example two insulation compositions for fire resistant cable according to the invention and an electric cable structure comprising these insulators.

Exemple 1
Le mélange destiné à former l'isolant comporte les constituants suivants
- Copolymère éthylène-propylène
de marque "Vistalon 2504" commercialisé
par Esso (de viscosité pouvant varier
dans de larges limites) 100 parties.Example 1
The mixture intended to form the insulation comprises the following constituents
- Ethylene-propylene copolymer
brand "Vistalon 2504" marketed
by Esso (viscosity may vary
within wide limits) 100 parts.

- Oxyde de zinc 5 parties. - Zinc oxide 5 parts.

- Borate de zinc de dénomination commer
ciale ZB2325 de la société TISSCO 75 parties.- Zinc borate of commercial name
ciale ZB2325 from the company TISSCO 75 parts.

- Alumine hydratée commercialisée sous
la marque "Martinal OL104" par
la société Martinswerke 75 parties.- Hydrated alumina sold under
the brand "Martinal OL104" by
Martinswerke 75 parts.

- Kaolin calciné commercialisé sous la
dénomination M501 par ECC 30 parties. - Calcined kaolin marketed under the
designation M501 by ECC 30 parts.

- Vinyltriméthoxyéthoxysilane commercia
lisé par Union Carbide sous la dénomination
"Silane A 172" 1,5 partie.- Vinyltrimethoxyethoxysilane commercia
read by Union Carbide under the name
"Silane A 172" 1.5 parts.

- Triméthacrylate de triméthylolpropane commer
cialisé par Anchor Chemie 1,5 partie.- Commercial trimethylolpropane trimethacrylate
specialized by Anchor Chemie 1.5 part.

- Peroxyde de dicumyle commercialisé sous la
marque "Perkadox BC40" par SEPICC 7 parties.- Dicumyl peroxide marketed under the
brand "Perkadox BC40" by SEPICC 7 parts.

- Dihydrotriméthylquinoléine polymèrisée com
mercialisée sous la marque "Permanax TQ" par
Vulnax 2 parties.- Polymerized dihydrotrimethylquinoline com
marketed under the brand name "Permanax TQ" by
Vulnax 2 parts.

- Plastifiant "Shell 8513" 15 parties. - Plasticizer "Shell 8513" 15 parts.

Exemple 2.Example 2.

Le mélange destiné à former l'isolant comporte les constituants suivants
- Copolymère éthylène- propylène
de marque "Vistalon 2504" d'Esso 100 parties.The mixture intended to form the insulation comprises the following constituents
- Ethylene-propylene copolymer
brand "Vistalon 2504" from Esso 100 parts.

- Oxyde de zinc 5 parties. - Zinc oxide 5 parts.

- Borate de zinc ZB2325 75 parties. - Zinc borate ZB2325 75 parts.

- Kaolin calciné M501 105 parties. - Calcined Kaolin M501 105 parts.

- Vinyltriméthoxyéthoxysilane " Silane A172" 1,5 partie. - Vinyltrimethoxyethoxysilane "Silane A172" 1.5 parts.

- Triméthacrylate de triméthylol propane 1,5 partie. - Trimethylol propane trimethacrylate 1.5 parts.

- Peroxyde de dicumyle "Perkadox BC40" 1,5 partie. - Dicumyl peroxide "Perkadox BC40" 1.5 parts.

- Dihydrotriméthylquinoléine "Permanax TQ" 2 parties. - Dihydrotrimethylquinoline "Permanax TQ" 2 parts.

- Plastifiant "Shell 8513" 15 parties. - Plasticizer "Shell 8513" 15 parts.

Des câbles fabriqués à l'aide de l'un ou l'autre de ces isolants, et présentant la structure suivante
- Conducteurs en cuivre
- Isolant des conducteurs réticulé en tube de
vulcanisation continu.Cables made using one or other of these insulators, and having the following structure
- Copper conductors
- Insulator of crosslinked conductors in tube
continuous vulcanization.

- Conducteur nu formant drain. - Bare conductor forming a drain.

- Ruban en soie de verre entourant l'assemblage
des conducteurs.- Glass silk ribbon surrounding the assembly
conductors.

- Gaine en matériau thermoplastique exempt d'halogène ont satisfait à l'essai de résistance au feu à 7500C pendant 3 heures suivant la norme CE1 331.  - Sheath in halogen-free thermoplastic material have passed the fire resistance test at 7500C for 3 hours according to standard CE1 331.

Leurs caractéristiques physiques et électriques étaient
conformes à la norme CEI92-351 catégorie EPR (à base de caoutchouc éthylène-propylène). Their physical and electrical characteristics were
in accordance with standard IEC92-351 EPR category (based on ethylene-propylene rubber).

Claims (4)

RevendicationsClaims 1/ Câble électrique résistant au feu, comprenant des conducteurs individuels entourés d'un isolant en polymère réticulé ou vulcanisé, éventuellement un ruban en soie de verre entourant l'assemblage des conducteurs isolés et une gaine externe, caractérisé en ce que son isolant contient, rapportés à 100 parties en poids de polymère, de 50 à 75 parties de borate de zinc, de 30 à 105 parties de kaolin calciné, de 1 à 1,5 partie d'un agent de liaison entre le polymère et la ou les charges minérales formé par le vinyltriméthoxyéthoxysilane ou une quantité molaire correspondante d'un vinyltétraalcoxysilane, 2 à 3 parties d'un agent de réticulation formé par le peroxyde de dicumyle ou une quantité molaire correspondante d'un autre peroxyde organique, environ 1,5 partie d'un activateur de réticulation formé par le triméthacrylate de triméthylolpropane ou une quantité molaire correspondante d'un autre acrylate d'alcoyle, 1 à 2 parties d'un agent antioxygène formé par la dihydrotriméthylquinoléine polymèrisée ou une quantité molaire correspondante d'une autre amine, et 10 à 20 parties d'un plastifiant paraffinique.1 / Fire-resistant electrical cable, comprising individual conductors surrounded by an insulator of crosslinked or vulcanized polymer, possibly a glass silk ribbon surrounding the assembly of insulated conductors and an external sheath, characterized in that its insulator contains, based on 100 parts by weight of polymer, 50 to 75 parts of zinc borate, 30 to 105 parts of calcined kaolin, 1 to 1.5 parts of a bonding agent between the polymer and the mineral filler (s) formed by vinyltrimethoxyethoxysilane or a corresponding molar amount of a vinyltetraalkoxysilane, 2 to 3 parts of a crosslinking agent formed by dicumyl peroxide or a corresponding molar amount of another organic peroxide, approximately 1.5 parts of a crosslinking activator formed by trimethylolpropane trimethacrylate or a corresponding molar amount of another alkyl acrylate, 1 to 2 parts of an antioxidant f formulated with polymerized dihydrotrimethylquinoline or a corresponding molar amount of another amine, and 10 to 20 parts of a paraffinic plasticizer. 2 / Câble électrique selon la revendication 1, caractérisé en ce que son isolant contient en outre jusqu'à 5 parties d'oxyde de zinc.2 / electrical cable according to claim 1, characterized in that its insulator further contains up to 5 parts of zinc oxide. 3 / Câble électrique selon la revendication 1 ou 2, caractérisé en ce que son isolant contient en outre jusqu'à 20 parties d'un caoutchouc vulcanisable formé par un organopolysiloxane.3 / electrical cable according to claim 1 or 2, characterized in that its insulator further contains up to 20 parts of a vulcanizable rubber formed by an organopolysiloxane. 4 / Câble selon l'une des revendications 1 à 3, caractérisé en ce que son isolant contient en outre jusqu'à 75 parties de trihydrate d'alumine ou une quantité molaire correspondante d'un autre hydrate métallique. 4 / Cable according to one of claims 1 to 3, characterized in that its insulator further contains up to 75 parts of alumina trihydrate or a corresponding molar amount of another metal hydrate.
FR8912268A 1989-09-19 1989-09-19 Fire-resistant electrical cable having no micaceous tape Withdrawn FR2652194A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8912268A FR2652194A1 (en) 1989-09-19 1989-09-19 Fire-resistant electrical cable having no micaceous tape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8912268A FR2652194A1 (en) 1989-09-19 1989-09-19 Fire-resistant electrical cable having no micaceous tape

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FR2652194A1 true FR2652194A1 (en) 1991-03-22

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1095964A1 (en) * 1999-10-29 2001-05-02 Repsol Quimica S.A. Polymeric thermal films for use in agriculture
WO2003082965A1 (en) * 2002-03-28 2003-10-09 Imerys Minerals Limited Flame retardant polymer compositions comprising a particulate clay mineral
CN111540525A (en) * 2020-05-26 2020-08-14 安徽太平洋电缆股份有限公司 Heat-insulating bottle type B1-grade light fireproof cable

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4101498A (en) * 1976-05-27 1978-07-18 Shell Oil Company Fire-resistant composition
JPS5859241A (en) * 1981-10-05 1983-04-08 Fujikura Ltd Flame-retarding composition
US4575184A (en) * 1983-06-06 1986-03-11 Sumitomo Electric Industries, Ltd. Flame retardant optical composite cable
JPS61287949A (en) * 1985-06-14 1986-12-18 Fujikura Ltd Flame-retardant composition and flame-retardant wire and cable
JPS6227447A (en) * 1985-07-29 1987-02-05 Fujikura Ltd Flame-retardant composition and flame-retardant wire and cable
US4806424A (en) * 1984-08-06 1989-02-21 Camco, Incorporated Electrical conductor insulated with insulating and jacketing material having improved resistance to hot fluids and gases

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4101498A (en) * 1976-05-27 1978-07-18 Shell Oil Company Fire-resistant composition
JPS5859241A (en) * 1981-10-05 1983-04-08 Fujikura Ltd Flame-retarding composition
US4575184A (en) * 1983-06-06 1986-03-11 Sumitomo Electric Industries, Ltd. Flame retardant optical composite cable
US4806424A (en) * 1984-08-06 1989-02-21 Camco, Incorporated Electrical conductor insulated with insulating and jacketing material having improved resistance to hot fluids and gases
JPS61287949A (en) * 1985-06-14 1986-12-18 Fujikura Ltd Flame-retardant composition and flame-retardant wire and cable
JPS6227447A (en) * 1985-07-29 1987-02-05 Fujikura Ltd Flame-retardant composition and flame-retardant wire and cable

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE DERWENT WOLRD PATENT INDEX, AN 83-47804K; "Flame retarding compsn. for insulating electric wires contains a high density polyethylene of specified melt index and a flame retardant"; & JP-A-58 059 241 (FUJIKURA CABLE WORKS k.K.) 08-04-1983 *
DATABASE DERWENT WORLD PATENT INDEX, AN 87-032252; "Fire retarding compsn. generating no poisonous gas comprises rubber, plastic, magnesium hydroxide and/or zinc borate, phosphate frit or phosphorus cpd. and crosslinking agent"; & JP-A-61 287 949 (FUJIKURA CABLE WORKS K.K.) 18-12-1986 *
DATABASE DERWENT WORLD PATENT INDEX, AN 87-075474; "Fire retarding compsn. comprises rubber plastic mixt. magnesium hydroxide and/or zinc borate, carbonising promoting agent and metal oxide"; & JP-A-62 027 447 (FUJIKURA CABLE WORKS K.K.) 05-02-1987 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1095964A1 (en) * 1999-10-29 2001-05-02 Repsol Quimica S.A. Polymeric thermal films for use in agriculture
WO2003082965A1 (en) * 2002-03-28 2003-10-09 Imerys Minerals Limited Flame retardant polymer compositions comprising a particulate clay mineral
CN111540525A (en) * 2020-05-26 2020-08-14 安徽太平洋电缆股份有限公司 Heat-insulating bottle type B1-grade light fireproof cable

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