GB1132717A - Improved thermal barriers for electric cables - Google Patents

Improved thermal barriers for electric cables

Info

Publication number
GB1132717A
GB1132717A GB47741/65A GB4774165A GB1132717A GB 1132717 A GB1132717 A GB 1132717A GB 47741/65 A GB47741/65 A GB 47741/65A GB 4774165 A GB4774165 A GB 4774165A GB 1132717 A GB1132717 A GB 1132717A
Authority
GB
United Kingdom
Prior art keywords
acid
conductors
jacket
copolymer
heat
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
GB47741/65A
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB1132717A publication Critical patent/GB1132717A/en
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
    • 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
    • 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
    • H01B3/447—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 acrylic compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49123—Co-axial cable

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Insulated Conductors (AREA)
  • Laminated Bodies (AREA)
  • Insulating Bodies (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)
  • Waveguide Aerials (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Organic Insulating Materials (AREA)
  • Paints Or Removers (AREA)
  • Steering Controls (AREA)

Abstract

1,132,717. Thermal barrier for electric cable. DOW CHEMICAL CO. 10 Nov., 1965 [19 Nov., 1964], No. 47741/65. Heading H1A. Insulated conductors 1 are surrounded by a heat-insulating layer 2, composed of foam either attached to sheathing member 3 before it is wrapped around the conductors or generated in situ when heat from the extruded polymer jacket 4 causes a suitable composition to foam. In either case layer 2 protects the conductors 1 from the heat of the extruded jacket 4. The foamable composition may comprise fine polymer particles containing a blowing agent and a binder such as latex. A thin plastic or metal substrate, suitably of copper or aluminium, may be coated on at least one side with a thin layer of foamable material and wrapped around the conductors prior to extrusion of jacket 4. Polymers which may be used include polystyrene, polyacrylic and polymethacrylic compounds, polyvinyl ethers, polyvinyl esters of organic acids, polyvinyl chloride, polyvinylidene chloride, polyisobutylene, polymers of alpha alkyl derivatives of styrene, ring substituted derivatives of styrene such as the chlorostyrenes, acrylic and methacrylic esters such as ethyl acrylate and propyl methacrylate, acrylonitrile, methacrylonitrile, alpha beta ethylenic. ally unsaturated dibasic acids and their derivatives and diolefins. Preferred compositions contain a copolymer of methyl methacrylate and acrylonitrile or a copolymer of methy methacrylate and methyl acrylate. Suitable blowing or foaming agents include pentane, hexane, heptane, cyclopentane, cyclopentadiene and neopentane, the last being preferred. An adhesive applied to the sheathing member before the foamable coating or outer polymer jacket is preferably a copolymer of ethylene and an acidic comonomer. Specific acidic comonomers which may be used are acrylic acid, methacrylic acid, crotonic acid, fumaric acid, maleic acid, itaconic acid, maleic anhydride, monomethyl maleate, monoethyl maleate, monomethyl fumarate and monoethyl fumarate. Exemplary compositions are given. A test procedure for thermal barriers is described and quantitative comparisons made between the performances of foamed compounds and those of solid substances in use.
GB47741/65A 1964-11-19 1965-11-10 Improved thermal barriers for electric cables Expired GB1132717A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US41244564A 1964-11-19 1964-11-19

Publications (1)

Publication Number Publication Date
GB1132717A true GB1132717A (en) 1968-11-06

Family

ID=23633008

Family Applications (4)

Application Number Title Priority Date Filing Date
GB23599/68A Expired GB1133855A (en) 1964-11-19 1965-11-10 Electric cables
GB4933/68A Expired GB1132718A (en) 1964-11-19 1965-11-10 Cable sheathing member
GB32262/68A Expired GB1132910A (en) 1964-11-19 1965-11-10 Cable sheathing member
GB47741/65A Expired GB1132717A (en) 1964-11-19 1965-11-10 Improved thermal barriers for electric cables

Family Applications Before (3)

Application Number Title Priority Date Filing Date
GB23599/68A Expired GB1133855A (en) 1964-11-19 1965-11-10 Electric cables
GB4933/68A Expired GB1132718A (en) 1964-11-19 1965-11-10 Cable sheathing member
GB32262/68A Expired GB1132910A (en) 1964-11-19 1965-11-10 Cable sheathing member

Country Status (7)

Country Link
US (1) US3344228A (en)
BE (1) BE672588A (en)
CH (1) CH465686A (en)
DE (1) DE1790246A1 (en)
GB (4) GB1133855A (en)
NL (1) NL6514983A (en)
SE (1) SE321517B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144901A (en) * 1983-08-08 1985-03-13 Acc Chem Co Electrical cable construction

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3534149A (en) * 1966-12-06 1970-10-13 Bell Telephone Labor Inc Communication cable systems
GB1154886A (en) * 1967-03-23 1969-06-11 British Insulated Callenders Improvements in or relating to Telecommunication Cables
US3509269A (en) * 1968-06-11 1970-04-28 Western Electric Co Thermal barriers for cables
DE1790202C3 (en) * 1968-09-27 1973-12-20 Kabel- Und Metallwerke Gutehoffnungshuette Ag, 3000 Hannover Longitudinal watertight electrical cable and process for its manufacture
JPS517500Y1 (en) * 1969-07-19 1976-02-28
US3710440A (en) * 1970-01-16 1973-01-16 Phelps Dodge Copper Prod Manufacture of coaxial cable
US3614299A (en) * 1970-07-17 1971-10-19 Exxon Research Engineering Co Low thermal conductivity cable core wrap
US3693250A (en) * 1970-07-20 1972-09-26 William J Brorein Method of making metallic sheathed cables with foam cellular polyolefin insulation and method of making
US3649745A (en) * 1970-08-14 1972-03-14 Anaconda Wire & Cable Co Sodium conductor cable
US3662090A (en) * 1971-04-16 1972-05-09 Anaconda Wire & Cable Co Coaxial cable
US4132857A (en) * 1971-08-12 1979-01-02 Union Carbide Corporation Electrical cable
US3894172A (en) * 1973-11-06 1975-07-08 Gen Cable Corp Multicable telephone cable in a common sheath
US4145567A (en) * 1977-06-06 1979-03-20 General Cable Corporation Solid dielectric cable resistant to electrochemical trees
DE2810986A1 (en) * 1978-03-10 1979-09-13 Siemens Ag ELECTRICAL CABLE OR ELECTRICAL LINE WITH A SILICONE RUBBER COVERING
US4269638A (en) * 1979-10-10 1981-05-26 The Okonite Company Method of manufacturing a sealed cable employing a wrapped foam barrier
US4270961A (en) * 1979-10-10 1981-06-02 The Okonite Company Method of manufacturing a sealed cable employing an extruded foam barrier
US5917707A (en) 1993-11-16 1999-06-29 Formfactor, Inc. Flexible contact structure with an electrically conductive shell
US7073254B2 (en) 1993-11-16 2006-07-11 Formfactor, Inc. Method for mounting a plurality of spring contact elements
US5820014A (en) * 1993-11-16 1998-10-13 Form Factor, Inc. Solder preforms
US20020053734A1 (en) * 1993-11-16 2002-05-09 Formfactor, Inc. Probe card assembly and kit, and methods of making same
US6201189B1 (en) 1995-06-13 2001-03-13 Commscope, Inc. Coaxial drop cable having a mechanically and electronically continuous outer conductor and an associated communications system
US5994152A (en) * 1996-02-21 1999-11-30 Formfactor, Inc. Fabricating interconnects and tips using sacrificial substrates
US8033838B2 (en) 1996-02-21 2011-10-11 Formfactor, Inc. Microelectronic contact structure

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2186793A (en) * 1937-11-27 1940-01-09 Anaconda Wire & Cable Co Electric cable
DE941389C (en) * 1951-04-19 1956-04-12 Basf Ag Process for the production of porous moldings from thermoplastics
US2862834A (en) * 1954-08-03 1958-12-02 Midland Chemcial Corp Method of coating an article with a heat expandable coating composition and coating composition therefor
US3244799A (en) * 1963-04-02 1966-04-05 Superior Cable Corp Electrical cable with cable core wrap
US3206541A (en) * 1963-04-29 1965-09-14 Gen Cable Corp Sheathed electrical cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144901A (en) * 1983-08-08 1985-03-13 Acc Chem Co Electrical cable construction

Also Published As

Publication number Publication date
GB1132718A (en) 1968-11-06
BE672588A (en) 1966-05-20
GB1133855A (en) 1968-11-20
US3344228A (en) 1967-09-26
CH465686A (en) 1968-11-30
SE321517B (en) 1970-03-09
GB1132910A (en) 1968-11-06
NL6514983A (en) 1966-05-20
DE1790246A1 (en) 1972-01-05

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