EP0089584B1 - Kabelummantelung - Google Patents

Kabelummantelung Download PDF

Info

Publication number
EP0089584B1
EP0089584B1 EP83102444A EP83102444A EP0089584B1 EP 0089584 B1 EP0089584 B1 EP 0089584B1 EP 83102444 A EP83102444 A EP 83102444A EP 83102444 A EP83102444 A EP 83102444A EP 0089584 B1 EP0089584 B1 EP 0089584B1
Authority
EP
European Patent Office
Prior art keywords
fire
cables
cable
cable covering
event
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
EP83102444A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0089584A1 (de
Inventor
Aziz Dr. El Sayed
Harry Dr. Röhr
Raoul Dr. Resz
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of EP0089584A1 publication Critical patent/EP0089584A1/de
Application granted granted Critical
Publication of EP0089584B1 publication Critical patent/EP0089584B1/de
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
    • H01B3/30—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

  • Cables for example electrical cables, are generally coated with a polymer.
  • a polymer e.g. Thermoplastics, cross-linked thermoplastics or elastomers are used.
  • a disadvantage of these cable jackets is that the polymers used tend to burn at high temperatures or when exposed to flame. As a result, the source of the fire can spread in a short time.
  • polymers can be made flame-retardant by adding fire-retardant additives.
  • fire retardant additives e.g. Combinations of halogenated hydrocarbons and antimony trioxide can be used.
  • Another possibility is to use polymers with a high halogen content, e.g. PVC to use.
  • these cables generate, among other things, harmful and highly corrosive gases. This can lead to temporary signs of poisoning and corrosion damage to materials near the fire site. As a rule, the damage caused by corrosion is much higher than the fire damage. Therefore, halogen-free, fire-retardant additives are increasingly being used to manufacture cable sheaths.
  • aluminum hydroxide hydrate e.g. martinale
  • calcium aluminate are used.
  • Cable sheathing consisting of polymer mixtures which contain small amounts of (partially) saponified ethylene-vinyl acetate copolymers are known from DD-A-140 095.
  • cables are sheathed using the extrusion process.
  • Polymers with a very high molecular weight or very low melt index are used for the extrusion. This creates a pressure build-up in front of the nozzle and achieves a uniform wall thickness during extrusion.
  • the invention relates to cable sheathing made from (partially) saponified ethylene-vinyl acetate copolymers.
  • the ethylene-vinyl acetate copolymers which can be used according to the invention have a content of 10 to 35% by weight, preferably 15 to 30% by weight, of vinyl alcohol.
  • copolymers which can be used according to the invention from 60% to 100% of the acetyl groups can be saponified to give the alcohol.
  • the copolymers have a melt index according to DIN 53 735 (190 ° C / 21.18 N) of 90 to 1.0 g / 10 minutes, preferably 50 to 5 g / 10 minutes.
  • cables are sheathed cables.
  • Glass fiber cables and electrical line cables, particularly preferably electrical line cables, are preferably sheathed according to the invention.
  • the cables can be used in the home, in the industrial sector and in the field of transport.
  • Copolymers based on ethylene-vinyl alcohol are characterized by a very high ignition temperature (approx. 470 ° C). The softening range is 108-110 ° C. In the event of a fire, the surface temperature of the casing increases. At approx. 200 ° C the viscosity of the melt is reduced. As the temperature continues to rise, the material begins to drip. The polymer begins to burn at a temperature of over 400 ° C.
  • the copolymer is used as cable sheathing, in the event of fire, a considerable proportion of the heat of combustion is dissipated as melting energy. As a result, the flame extinguishes itself after a very short time, so that the cable is self-extinguishing and therefore flame-retardant.

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Insulated Conductors (AREA)
  • Organic Insulating Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
EP83102444A 1982-03-24 1983-03-12 Kabelummantelung Expired EP0089584B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3210726 1982-03-24
DE19823210726 DE3210726A1 (de) 1982-03-24 1982-03-24 Kabelummantelung

Publications (2)

Publication Number Publication Date
EP0089584A1 EP0089584A1 (de) 1983-09-28
EP0089584B1 true EP0089584B1 (de) 1986-02-19

Family

ID=6159117

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83102444A Expired EP0089584B1 (de) 1982-03-24 1983-03-12 Kabelummantelung

Country Status (4)

Country Link
EP (1) EP0089584B1 (ja)
JP (1) JPS58175212A (ja)
DE (2) DE3210726A1 (ja)
ES (1) ES520886A0 (ja)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5727624B2 (ja) * 1972-03-10 1982-06-11
CA1115044A (en) * 1977-05-26 1981-12-29 Michael J. Keogh Polyethylene composition containing talc filler for electrical applications
WO1979000683A1 (en) * 1978-03-02 1979-09-20 Aeg Telefunken Kabelwerke Non-inflammable polymer mixture free from halogen and use thereof
DD140095B1 (de) * 1978-08-24 1980-10-29 Heinz Hofmann Polyaethylen-formmassen zur isolation metallischer leiter
JPS5922411Y2 (ja) * 1979-08-29 1984-07-04 東芝テック株式会社 焙焼器
DE3021044A1 (de) * 1980-06-03 1981-12-24 Siemens AG, 1000 Berlin und 8000 München Verfahren zur herstellung vernetzter kabel- und leitungsisolierungen und -maentel
JPS6140021Y2 (ja) * 1980-07-24 1986-11-15

Also Published As

Publication number Publication date
EP0089584A1 (de) 1983-09-28
JPS58175212A (ja) 1983-10-14
JPH0317167B2 (ja) 1991-03-07
DE3362144D1 (en) 1986-03-27
ES8403659A1 (es) 1984-03-16
DE3210726A1 (de) 1983-10-06
ES520886A0 (es) 1984-03-16

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