GB1421047A - Electrical insulating material - Google Patents

Electrical insulating material

Info

Publication number
GB1421047A
GB1421047A GB4737073A GB4737073A GB1421047A GB 1421047 A GB1421047 A GB 1421047A GB 4737073 A GB4737073 A GB 4737073A GB 4737073 A GB4737073 A GB 4737073A GB 1421047 A GB1421047 A GB 1421047A
Authority
GB
United Kingdom
Prior art keywords
film
porous
macro molecular
blend
oct
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
GB4737073A
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1421047A publication Critical patent/GB1421047A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/26—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/018—Dielectrics
    • H01G4/20—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06
    • H01G4/22—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 impregnated
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
    • C08J2201/054—Precipitating the polymer by adding a non-solvent or a different solvent

Abstract

1421047 Impregnated porous film MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 10 Oct 1973 [12 Oct 1972] 47370/73 Heading B5B An electrical insulating material comprises an insulating oil impregnated film of porous macromolecular material which has an inter-film plane orientation structure the major part of which consists of crystalline synthetic macromolecular material, the porous material having a void ratio of 5-50%, a mean pore diameter of 0À01-1 micron, the ratio of the volume of pores of diameter 10 microns or less to the whole volume of all voids being 90% or more. The film is made by forming a stretched film from a blend of two different macro molecular materials and dissolving away one of the polymers; stretching a blend of two or more macro molecular materials or by rapidly extruding a concentrated solution of a macro molecular material into a non solvent. The film may be cross linked either by chemical or radioactive after treatment.
GB4737073A 1972-09-01 1973-10-10 Electrical insulating material Expired GB1421047A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10251972A JPS5132400B2 (en) 1972-09-01 1972-09-01

Publications (1)

Publication Number Publication Date
GB1421047A true GB1421047A (en) 1976-01-14

Family

ID=14329585

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4737073A Expired GB1421047A (en) 1972-09-01 1973-10-10 Electrical insulating material

Country Status (6)

Country Link
JP (1) JPS5132400B2 (en)
CA (1) CA1037670A (en)
DE (1) DE2350913C3 (en)
FR (1) FR2203143B1 (en)
GB (1) GB1421047A (en)
NL (1) NL7313991A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5113999A (en) * 1974-07-25 1976-02-03 Mitsubishi Rayon Co Denkibutsupinyo 2 jikuenshinhoripuropirenfuirumu
JPS5176000A (en) * 1974-12-25 1976-06-30 Matsushita Electric Ind Co Ltd DENKIZE TSUENTAI
JPS5175999A (en) * 1974-12-25 1976-06-30 Matsushita Electric Ind Co Ltd DENKIZE TSUENTAI
DE2744404C2 (en) * 1977-10-03 1991-05-08 Günter 4800 Bielefeld Reichensperger Float switch
JPS6117520U (en) * 1984-07-05 1986-02-01 興国コントロ−ル・ケ−ブル株式会社 Connection structure between inner and piston in cylinder cable

Also Published As

Publication number Publication date
NL7313991A (en) 1974-04-16
DE2350913B2 (en) 1975-04-30
JPS5132400B2 (en) 1976-09-11
DE2350913C3 (en) 1975-12-04
CA1037670A (en) 1978-09-05
DE2350913A1 (en) 1974-04-18
FR2203143B1 (en) 1977-08-12
JPS4959300A (en) 1974-06-08
FR2203143A1 (en) 1974-05-10

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Legal Events

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

Effective date: 19921010