GB1232186A - - Google Patents

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Publication number
GB1232186A
GB1232186A GB1232186DA GB1232186A GB 1232186 A GB1232186 A GB 1232186A GB 1232186D A GB1232186D A GB 1232186DA GB 1232186 A GB1232186 A GB 1232186A
Authority
GB
United Kingdom
Prior art keywords
filaments
dehydrogenating
range
dec
temperature
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 GB1232186A publication Critical patent/GB1232186A/en
Expired legal-status Critical Current

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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)
  • Carbon And Carbon Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Inorganic Fibers (AREA)
  • Artificial Filaments (AREA)

Abstract

1,232,186. Polyacrylonitrile filaments. SIGRI ELEKTROGRAPHIT G.m.b.H. 19 Dec., 1969 [20 Dec., 1968], No. 62117/69. Heading B5B. [Also in Division C1] The suitability of polymeric synthetic filaments of non-cellulosic origin which are capable of undergoing cross-linking when heating in the presence of a dehydrogenating agent, for carbonization is improved by thus heating the filaments within a temperature range of 175- 300‹ C., while tensioning the filaments; the temperature of the filaments being increased within the said range at a rate of 3-35‹ C. per hour. The filaments may be heated in a stream of air, or of modified air, which contains either up to 40% or up to 10% of oxygen by volume; chlorine or liquid sulphur may also be used as dehydrogenating agents. The dehydrogenating agent used may be supplemented with other dehydrogenating agents, for example boric acid, ammonium sulphate, and ammonium phosphate; and a radical producer for example α- nitrophenol or parathiocresol or a radical attracter e.g. hydroxylamine or urea. In a preferred embodiment, polyacrylonitrile filaments were pulled through a furnace with a temperature profile such that a rate of increase of 35‹ C. per hour was obtained within the range 175-300‹ C. The filament obtained was black and flexible, having an elasticity modulus of 7À9 x 10<SP>4</SP> Kp/cm.<SP>2</SP> and a tear resistance of 0À9 x 10<SP>3</SP> Kp/cm.<SP>2</SP>. The treated fibres are then carbonized; for details see Divison C1.
GB1232186D 1968-12-20 1969-12-19 Expired GB1232186A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681816170 DE1816170A1 (en) 1968-12-20 1968-12-20 Process for the production of carbon or graphite fibers

Publications (1)

Publication Number Publication Date
GB1232186A true GB1232186A (en) 1971-05-19

Family

ID=5716975

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1232186D Expired GB1232186A (en) 1968-12-20 1969-12-19

Country Status (8)

Country Link
AT (1) AT295023B (en)
BE (1) BE743458A (en)
CH (1) CH515853A (en)
DE (1) DE1816170A1 (en)
FR (1) FR2026637A1 (en)
GB (1) GB1232186A (en)
NL (1) NL6918783A (en)
NO (1) NO124306B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS602408B2 (en) * 1977-08-17 1985-01-21 東邦ベスロン株式会社 Carbon fiber with excellent heat and oxidation resistance

Also Published As

Publication number Publication date
BE743458A (en) 1970-06-19
AT295023B (en) 1971-12-27
CH515853A (en) 1971-11-30
NL6918783A (en) 1970-06-23
DE1816170A1 (en) 1970-09-17
FR2026637A1 (en) 1970-09-18
NO124306B (en) 1972-04-04

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Legal Events

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