GB822701A - Improvements relating to electrical insulating materials - Google Patents

Improvements relating to electrical insulating materials

Info

Publication number
GB822701A
GB822701A GB3693854A GB3693854A GB822701A GB 822701 A GB822701 A GB 822701A GB 3693854 A GB3693854 A GB 3693854A GB 3693854 A GB3693854 A GB 3693854A GB 822701 A GB822701 A GB 822701A
Authority
GB
United Kingdom
Prior art keywords
asbestos
polyethylene terephthalate
rubberized
layer
dec
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
GB3693854A
Inventor
John Spencer Simons
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB3693854A priority Critical patent/GB822701A/en
Publication of GB822701A publication Critical patent/GB822701A/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
    • 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
    • H01B3/42—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 polyesters; polyethers; polyacetals
    • H01B3/421—Polyesters
    • H01B3/422—Linear saturated polyesters derived from dicarboxylic acids and dihydroxy compounds
    • H01B3/423—Linear aromatic polyesters
    • 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
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/06—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances asbestos

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

822,701. Laminates. BRITISH THOMSONHOUSTON CO. Ltd. Dec. 14, 1955 [Dec. 21, 1954], No. 36938/54. Class 140. [Also in Group XXXV] A composite sheet of electrically insulating material for use in winding slots and slot lines for dynamo-electric machines (e.g. of turboalternator rotors) is made by bonding a layer of polyethylene terephthalate to at least one side of a layer of rubberized asbestos. The rubberized asbestos may have attached to one side resinated asbestos felt and to the other polyethylene terephthalate. Where a sandwich is made the middle layer should be half the total thickness and the outer layers should be of equal thickness. The resin in the asbestos felt may be an epoxy or phenolic thermosetting resin. A pressure-sensitive, preferably thermosetting, adhesive may be used for bonding the polyethylene terephthalate to the rubberized asbestos.
GB3693854A 1954-12-21 1954-12-21 Improvements relating to electrical insulating materials Expired GB822701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3693854A GB822701A (en) 1954-12-21 1954-12-21 Improvements relating to electrical insulating materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3693854A GB822701A (en) 1954-12-21 1954-12-21 Improvements relating to electrical insulating materials

Publications (1)

Publication Number Publication Date
GB822701A true GB822701A (en) 1959-10-28

Family

ID=10392401

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3693854A Expired GB822701A (en) 1954-12-21 1954-12-21 Improvements relating to electrical insulating materials

Country Status (1)

Country Link
GB (1) GB822701A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11603610B2 (en) 2017-07-14 2023-03-14 3M Innovative Properties Company Noise control article

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11603610B2 (en) 2017-07-14 2023-03-14 3M Innovative Properties Company Noise control article

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