CA2400866A1 - Impact-resistant self-extinguishing cable - Google Patents

Impact-resistant self-extinguishing cable Download PDF

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Publication number
CA2400866A1
CA2400866A1 CA002400866A CA2400866A CA2400866A1 CA 2400866 A1 CA2400866 A1 CA 2400866A1 CA 002400866 A CA002400866 A CA 002400866A CA 2400866 A CA2400866 A CA 2400866A CA 2400866 A1 CA2400866 A1 CA 2400866A1
Authority
CA
Canada
Prior art keywords
self
extinguishing cable
cable
flame
extinguishing
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.)
Granted
Application number
CA002400866A
Other languages
French (fr)
Other versions
CA2400866C (en
Inventor
Sergio Belli
Diego Tirelli
Paolo Veggetti
Alberto Bareggi
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.)
Prysmian Cavi e Sistemi Energia SRL
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2400866A1 publication Critical patent/CA2400866A1/en
Application granted granted Critical
Publication of CA2400866C publication Critical patent/CA2400866C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Abstract

Self-extinguishing cable, in particular an electrical cable for low-voltage or medium-voltage power transmission or distribution of for data transmission, comprising at least one conductor and at least one flame-retardant coating positioned externally to said conductor. The flame-retardant coating is produced from an expanded polymeric material which incorporates at least one intumescent agent.

Claims (30)

1. Self-extinguishing cable (20, 30, 40) comprising at least one conductor (1) and at least one flame-retardant coating (21, 31, 41) in a position radially external to said at least one conductor (1), characterized in that said at least one flame-retardant coating (21, 31, 41) comprises an expanded polymeric material which incorporates at least one intumescent agent.
2. Self-extinguishing cable (20, 30, 40) according to Claim 1, characterized in that said cable (20, 30, 40) comprises a polymeric sheath (5) in a position radially external to said at least one flame-retardant coating (21, 31, 41).
3. Self-extinguishing cable (20, 30, 40) according to Claim 1, characterized in that said intumescent agent comprises at least one phosphorus-containing compound.
4. Self-extinguishing cable (20, 30, 40) according to Claim 3, characterized in that said at least one phosphorus-containing compound is chosen from the group: phosphorous acid salts, phosphoric acid salts, organic esters of phosphoric acid, organic polyesters of phosphoric acid; or mixtures thereof.
5. Self-extinguishing cable (20, 30, 40) according to Claim 1, characterized in that said intumescent agent comprises at least one nitrogen-containing compound.
6. Self-extinguishing cable (20, 30, 40) according to Claim 5, characterized in that said at least one nitrogen-containing compound is chosen from the group:
ammonium salts, melamine, guanidine, melamine cyanurate, guanidylurea, urea or mixtures thereof.
7. Self-extinguishing cable (20, 30, 40) according to Claim 1, characterized in that said intumescent agent comprises compounds containing both phosphorus and nitrogen.
8. Self-extinguishing cable (20, 30, 40) according to Claim 7, characterized in that said compounds are chosen from: phosphates, polyphosphates or pyrophosphates of ammonia, of guanidine, of melamine or of piperazine; phosphoramides, phosphorylamides, amidophosphonates, phosphonitrile compounds, or mixtures thereof.
9. Self-extinguishing cable (20, 30, 40) according to any one of the preceding claims, characterized in that said polymeric material is a polyolefinic polymer or copolymer based on ethylene and/or propylene.
10. Self-extinguishing cable (20, 30, 40) according to Claim 9, characterized in that said polymeric material is chosen from:

a) copolymers of ethylene with an ethylenically unsaturated ester, in which the amount of unsaturated ester is between 5% and 80% by weight, preferably between 10% and 50% by weight;

b) elastomeric copolymers of ethylene with at least one C3-C12 .alpha.-olefin, and optionally a diene, having the following composition: 35 mol%-90 mol% of ethylene, 10 mol%-65 mol% of .alpha.-olefin, 0 mol%-10 mol% of diene;

c) copolymers of ethylene with at least one C4-C12 .alpha.-olefin, and optionally a diene, generally having a density of between 0.86 and 0.90 g/cm3;

d) polypropylene modified with ethylene/C3-C12 .alpha.-olefin copolymers, in which the weight ratio between the polypropylene and the ethylene/C3-C12 .alpha.-olefin copolymer is between 90/10 and 30/70, preferably between 50/50 and 30/70.
11. Self-extinguishing cable (20, 30, 40) according to any one of the preceding claims, characterized in that the expansion degree of said flame-retardant coating (21, 31, 41) is between 5% and 500%.
12. Self-extinguishing cable (20, 30, 40) according to Claim 11, characterized in that said expansion degree is between 10% and 200%.
13. Self-extinguishing cable (20, 30, 40) according to Claim 12, characterized in that said expansion degree is between 20% and 150%.
14. Self-extinguishing cable (20, 30, 40) according to any one of the preceding claims, characterized in that the thickness of said flame-retardant coating (21, 31, 41) is between 0.5 mm and 6 mm.
15. Self-extinguishing cable (20, 30, 40) according to Claim 14, characterized in that said thickness is between 1 mm and 4 mm.
16. Self-extinguishing cable (20, 30, 40) according to any one of the preceding claims, characterized in that the amount of said intumescent agent is between 1%
and 60% by weight relative to the total weight of the base composition.
17. Self-extinguishing cable (20, 30, 40) according to Claim 16, characterized in that said amount is between 2% and 50% by weight.
18. Self-extinguishing cable (20, 30, 40) according to Claim 17, characterized in that said amount is between 5% and 30% by weight.
19. Self-extinguishing cable (20, 30, 40) according to any one of the preceding claims, characterized in that said expanded polymeric material incorporates at least one mineral-filler.
20. Self-extinguishing cable (20, 30, 40) according to Claim 19, characterized in that the amount of said mineral filler is not greater than 60 phr.
21. Self-extinguishing cable (20, 30, 40) according to Claim 19, characterized in that said mineral filler is a flame-retardant filler.
22. Self-extinguishing cable (20, 30, 40) according to Claim 21, characterized in that said flame-retardant filler is chosen from the group: magnesium hydroxide, alumina trihydrate, magnesium, hydrated carbonate, magnesium carbonate, mixed hydrated carbonate of magnesium and calcium, mixed carbonate of magnesium and calcium, and mixtures thereof.
23. Self-extinguishing cable (20, 30, 40) according to Claim 19, characterized in that said mineral filler is an inorganic substance chosen from: glass fibres, calcinated kaolin, calcium carbonate or mixtures thereof.
24. Self-extinguishing cable (20, 30, 40) according to any one of the preceding claims, characterized in that said flame-retardant coating (21, 31, 41) satisfies the flame-resistance characteristics according to IEC standard 332/3C.
25. Self-extinguishing cable (20, 30, 40) according to any one of the preceding claims, characterized in that said flame-retardant coating (21, 31, 41) is obtained by extrusion.
26. Self-extinguishing cable (20, 30, 40) according to Claim 25, characterized in that the stage of expansion of said flame-retardant coating (21, 31, 41) is carried out during said extrusion by adding an expanding agent.
27. Self-extinguishing cable (20, 30, 40) according to Claim 26, characterized in that said expansion is obtained by injecting a gas at high pressure.
28. Self-extinguishing cable (20, 30, 40) according to any one of the preceding claims, characterized in that, after expansion, said polymeric material is subjected to a crosslinking stage.
29. Method for giving a cable (20, 30, 40) flame-retardant and impact-resistance properties, characterized in that said cable (20, 30, 40) is given at least one flame-retardant coating (21, 31, 41) comprising an expanded polymeric material incorporating at least one intumescent agent.
30. Method according to Claim 29, characterized in that said flame-retardant coating (21, 31, 41) is obtained by extrusion.
CA2400866A 2000-02-21 2001-02-20 Impact-resistant self-extinguishing cable Expired - Lifetime CA2400866C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP00103593.0 2000-02-21
EP00103593 2000-02-21
US18512000P 2000-02-25 2000-02-25
US60/185,120 2000-02-25
PCT/EP2001/001874 WO2001061711A1 (en) 2000-02-21 2001-02-20 Impact-resistant self-extinguishing cable

Publications (2)

Publication Number Publication Date
CA2400866A1 true CA2400866A1 (en) 2001-08-23
CA2400866C CA2400866C (en) 2010-07-20

Family

ID=26070574

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2400866A Expired - Lifetime CA2400866C (en) 2000-02-21 2001-02-20 Impact-resistant self-extinguishing cable

Country Status (10)

Country Link
US (1) US7049524B2 (en)
EP (1) EP1258013B1 (en)
CN (1) CN1231924C (en)
AT (1) ATE403223T1 (en)
AU (2) AU2001252133B2 (en)
BR (1) BR0108530B1 (en)
CA (1) CA2400866C (en)
DE (1) DE60135095D1 (en)
ES (1) ES2311515T3 (en)
WO (1) WO2001061711A1 (en)

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JP6781702B2 (en) 2014-12-22 2020-11-04 サビック グローバル テクノロジーズ ベスローテン フェンノートシャップ Flame-retardant glass long fiber reinforced polypropylene composition
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Also Published As

Publication number Publication date
BR0108530B1 (en) 2011-05-31
DE60135095D1 (en) 2008-09-11
EP1258013B1 (en) 2008-07-30
BR0108530A (en) 2003-04-22
AU2001252133B2 (en) 2005-10-27
US7049524B2 (en) 2006-05-23
EP1258013A1 (en) 2002-11-20
AU5213301A (en) 2001-08-27
WO2001061711A1 (en) 2001-08-23
CN1419698A (en) 2003-05-21
US20030141097A1 (en) 2003-07-31
CN1231924C (en) 2005-12-14
ATE403223T1 (en) 2008-08-15
CA2400866C (en) 2010-07-20
ES2311515T3 (en) 2009-02-16

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Effective date: 20210222