GB1172048A - Crack Resistant Epoxy Resin Casting Composition - Google Patents

Crack Resistant Epoxy Resin Casting Composition

Info

Publication number
GB1172048A
GB1172048A GB1930268A GB1930268A GB1172048A GB 1172048 A GB1172048 A GB 1172048A GB 1930268 A GB1930268 A GB 1930268A GB 1930268 A GB1930268 A GB 1930268A GB 1172048 A GB1172048 A GB 1172048A
Authority
GB
United Kingdom
Prior art keywords
epoxy resin
composition
epoxy
particle size
casting composition
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
GB1930268A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1172048A publication Critical patent/GB1172048A/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
    • H01B3/40—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 epoxy resins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/26—Lead-in insulators; Lead-through insulators
    • H01B17/30—Sealing
    • H01B17/303—Sealing of leads to lead-through insulators
    • H01B17/306—Sealing of leads to lead-through insulators by embedding in material other than glass or ceramics
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

1,172,048. Epoxy resin composition. WESTINGHOUSE ELECTRIC CORP. 24 April, 1968 [12 June, 1967 (2)], No. 19302/68. Heading C3B. [Also in Division H1] A liquid casting composition comprises an epoxy resin, curing agent and accelerator and a mineral filler material, a portion at least of which has a coefficient of linear thermal expansion not greater than 8 x 10<SP>-6</SP> in./in./‹C. and has a cumulative particle size distribution (by weight) such that: Up to 80% .. .. > 30Á Up to 35% .. .. > 20Á 20-60% ..... > 10Á 40-80% .. .. .. > 4Á 60-90% .. .. .. > 2Á 76-95% ..... > 1Á 86-100% ..... > 0À4Á Suitable fillers are fused quartz, beryl and lithium aluminium silicate. The mineral filler may further comprise 20-25% by wt. of the composition of alumina trihydrate having an average particle size of 6À5-8À5 Á. The total filler may comprise 65-85% of the composition. Suitable epoxy resins are glycidyl ethers of polyhydric phenols, epoxy novolac resins or cycloaliphatic 1,2-epoxy resins. Uses.-Encapsulation of electrical apparatus, e.g. transformer or bushings.
GB1930268A 1967-06-12 1968-04-24 Crack Resistant Epoxy Resin Casting Composition Expired GB1172048A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64531967A 1967-06-12 1967-06-12
US64532067A 1967-06-12 1967-06-12

Publications (1)

Publication Number Publication Date
GB1172048A true GB1172048A (en) 1969-11-26

Family

ID=27094670

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1930268A Expired GB1172048A (en) 1967-06-12 1968-04-24 Crack Resistant Epoxy Resin Casting Composition

Country Status (4)

Country Link
BE (1) BE715842A (en)
BR (1) BR6899273D0 (en)
FR (1) FR1570827A (en)
GB (1) GB1172048A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007010025A1 (en) * 2005-07-20 2007-01-25 Areva T & D Sa Electric insulator and a method for the production thereof
CN113257537A (en) * 2021-05-13 2021-08-13 葛连志 Centered electromagnetic coil and preparation method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES286246Y (en) * 1985-04-23 1987-01-16 Pol Sa FENDER FOR ELECTRIC TRANSFORMERS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007010025A1 (en) * 2005-07-20 2007-01-25 Areva T & D Sa Electric insulator and a method for the production thereof
US7989704B2 (en) 2005-07-20 2011-08-02 Areva T&D Sa Electric insulator and a method for the production thereof
CN113257537A (en) * 2021-05-13 2021-08-13 葛连志 Centered electromagnetic coil and preparation method thereof

Also Published As

Publication number Publication date
FR1570827A (en) 1969-06-13
BE715842A (en) 1968-10-16
BR6899273D0 (en) 1973-01-09

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee