GB1266323A - - Google Patents

Info

Publication number
GB1266323A
GB1266323A GB1266323DA GB1266323A GB 1266323 A GB1266323 A GB 1266323A GB 1266323D A GB1266323D A GB 1266323DA GB 1266323 A GB1266323 A GB 1266323A
Authority
GB
United Kingdom
Prior art keywords
filament
temperature
heating
carbon
rate
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
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 filed Critical
Publication of GB1266323A publication Critical patent/GB1266323A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/20—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products
    • D01F9/21—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F9/22—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyacrylonitriles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Inorganic Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

1,266,323. Carbon filaments. MORGANITE RESEARCH & DEVELOPMENT Ltd. 19 May, 1969 [24 May, 1968], No. 24885/68. Heading C1A. Carbon filament is produced by the carbonization of a filamentary polymer or copolymer of polyacrylonitrile said carbonization including a step in which the blackened :filament, i.e. the product obtained by exposing the material in an oxidizing atmosphere to a temperature between 190‹ and 300‹ C. for a time sufficient for oxygen to permeate right through the filaments, is heated in a protective atmosphere up to a temperature above 900‹ C., in which step the rate of heating is not less than 300‹ C./hr. A preferred rate is not less than 1000‹ C./hr. and may be in the range 1500‹ to 30,000‹ C./hr. Once the temperature of the filament is above 1100‹ C. the rate -of cheating may be increased, e.g. to approximately 250,000‹ C./hr. The filament may be graphitized by heating at a -final temperature of 2300‹ to 3000‹ C., and the heating step may be performed in a protective atmosphere with carbon -as a gettering material. Tension may be applied to the filament during the blackening step and/or during the graphitization.
GB1266323D 1968-05-24 1968-05-24 Expired GB1266323A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2488568 1968-05-24

Publications (1)

Publication Number Publication Date
GB1266323A true GB1266323A (en) 1972-03-08

Family

ID=10218795

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1266323D Expired GB1266323A (en) 1968-05-24 1968-05-24

Country Status (5)

Country Link
DE (1) DE1926318A1 (en)
FR (1) FR2009944A1 (en)
GB (1) GB1266323A (en)
NL (1) NL6907900A (en)
SE (1) SE342212B (en)

Also Published As

Publication number Publication date
SE342212B (en) 1972-01-31
FR2009944A1 (en) 1970-02-13
NL6907900A (en) 1969-11-26
DE1926318A1 (en) 1969-12-04

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees