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GB979122A - Method of producing semiconductive polymer materials - Google Patents

Method of producing semiconductive polymer materials

Info

Publication number
GB979122A
GB979122A GB1542261A GB1542261A GB979122A GB 979122 A GB979122 A GB 979122A GB 1542261 A GB1542261 A GB 1542261A GB 1542261 A GB1542261 A GB 1542261A GB 979122 A GB979122 A GB 979122A
Authority
GB
United Kingdom
Prior art keywords
stage
treatment
heat
fibres
medium
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
GB1542261A
Inventor
Alexander Vasilievic Topchjiev
Valentin Alexeevich Karguin
Rita Mikhailovna Kosova
Boris Abromovich Krentsel
Boris Emmanooilovich Davydov
Lev Solomonovich Polak
Mooza Alexandrovna Gueiderikh
Vera Evguenievna Kotina
Nadezhda Fedorovna Erofeeva
Fridrich Lvovic Alter-Pesotski
Alexander Arsenjevich Konkin
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.)
INST NEFTJECHIMICHESKOVO SYNTE
V NAUTCHNO I I ISKUSSTVENNOVO
Original Assignee
INST NEFTJECHIMICHESKOVO SYNTE
V NAUTCHNO I I ISKUSSTVENNOVO
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 INST NEFTJECHIMICHESKOVO SYNTE, V NAUTCHNO I I ISKUSSTVENNOVO filed Critical INST NEFTJECHIMICHESKOVO SYNTE
Priority to GB1542261A priority Critical patent/GB979122A/en
Publication of GB979122A publication Critical patent/GB979122A/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
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
    • H01B1/12—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances organic substances

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Inorganic Fibers (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Artificial Filaments (AREA)

Abstract

Materials having semi-conducting properties are made by a two-stage heat-treatment of previously stretched polyacrylonitrile fibres or fabrics made therefrom, the first stage being carried out at substantially 200 DEG C. and the second stage at 500-1100 DEG C., the process resulting in carbon fibres. Preliminary stretching may be in the range 10-25 times. Preferably polyacrylonitrile having an average molecular weight of not less than 10,000, the fibres having a metric worsted number in the range 6000-7000, is used. Metric worsted number= number of 1000 m. lengths in 1000 gms. Fabrics used should have a weave ensuring free shrinkage. At least one stage of the heat-treatment may be carried out in air, in an atmosphere of inert gas, or a gas or vapour containing free or combined nitrogen, e.g. ammonia, at atmospheric or superatmospheric pressures, or in vacuo, or in a vaporized hydrocarbon medium (e.g. paraffin) or in powdered carbon as a heat transfer medium, and an absorbent medium for vapours evolved. The two stages may be effected in the same medium or in different media. In examples, first stage heat treatment is for 20 hours at 200 DEG C. and that of second stage heat-treatment varies from 20 minutes to 1 hour at from 500-1100 DEG C. Materials so made have electrical conductivities ranging from 10-6 mho./cm. to 102 mho./cm. and the weight of the treated material is 40-70% of the initial weight.
GB1542261A 1961-04-28 1961-04-28 Method of producing semiconductive polymer materials Expired GB979122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1542261A GB979122A (en) 1961-04-28 1961-04-28 Method of producing semiconductive polymer materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1542261A GB979122A (en) 1961-04-28 1961-04-28 Method of producing semiconductive polymer materials

Publications (1)

Publication Number Publication Date
GB979122A true GB979122A (en) 1965-01-01

Family

ID=10058858

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1542261A Expired GB979122A (en) 1961-04-28 1961-04-28 Method of producing semiconductive polymer materials

Country Status (1)

Country Link
GB (1) GB979122A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990000634A2 (en) * 1988-07-07 1990-01-25 E.I. Du Pont De Nemours And Company Metallized polymers and method
US5399425A (en) * 1988-07-07 1995-03-21 E. I. Du Pont De Nemours And Company Metallized polymers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990000634A2 (en) * 1988-07-07 1990-01-25 E.I. Du Pont De Nemours And Company Metallized polymers and method
WO1990000634A3 (en) * 1988-07-07 1990-05-03 Du Pont Metallized polymers and method
US5399425A (en) * 1988-07-07 1995-03-21 E. I. Du Pont De Nemours And Company Metallized polymers

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