GB1365165A - Production of carbon fibres - Google Patents

Production of carbon fibres

Info

Publication number
GB1365165A
GB1365165A GB5729471A GB5729471A GB1365165A GB 1365165 A GB1365165 A GB 1365165A GB 5729471 A GB5729471 A GB 5729471A GB 5729471 A GB5729471 A GB 5729471A GB 1365165 A GB1365165 A GB 1365165A
Authority
GB
United Kingdom
Prior art keywords
fibres
vinyl
acrylonitrile
ratio
polymer
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
GB5729471A
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.)
Kanegafuchi Spinning Co Ltd
Original Assignee
Kanegafuchi Spinning 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 Kanegafuchi Spinning Co Ltd filed Critical Kanegafuchi Spinning Co Ltd
Publication of GB1365165A publication Critical patent/GB1365165A/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)
  • Woven Fabrics (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

1365165 Carbon fibres KANEGAFUCHI BOSEKI KK 9 Dec 1971 [10 Dec 1970] 57294/71 Heading C1A [Also in Divisions B5 and C3] Carbon fibres are formed from fibres of an acrylonitrile polymer in which a portion of the nitrile groups have been converted to amidoxime groups, by heat treating the polymer fibres at a temperature of from 200‹ to 300‹ C. under an oxidizing atmosphere and then carbonizing the heat-treated fibres at a temperature of from 800‹ to 3000‹ C. under a non-oxidizing atmosphere. The polymer has a DO/DN ratio of from 3 to 30. The ratio is measured by the ratio of the absorbancy DO, of the amidoxime group at an absorption band of substantially 6 Á, to the absorbancy DN of the nitrile groups in the absorption band at 4À5 Á. The polymers aftertreated to introduce amidoxime groups may be polyacrylonitrile or a copolymer of at least 85% by weight of acrylonitrile and a vinyl or allyl monomer. A list of such monomers is given selected from the classes vinyl esters, esters of acrylic or methacrylic acid, or acid chlorides or amides of these acids, allyl vinyl or vinylidene halides and sulphonates. Exemplified polymers are polyacrylonitrile aftertreated with hydroxylamine and anhydrous sodium carbonate and copolymers of acrylonitrile and vinyl acetate or methyl acrylate similarly treated. The fibres may be in the form of filaments, tows, staple fibres and yarns, woven and non-woven fabrics and knitted goods. The heat-treatment and carbonization are carried out using conventional techniques.
GB5729471A 1970-12-10 1971-12-09 Production of carbon fibres Expired GB1365165A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11022370 1970-12-10

Publications (1)

Publication Number Publication Date
GB1365165A true GB1365165A (en) 1974-08-29

Family

ID=14530189

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5729471A Expired GB1365165A (en) 1970-12-10 1971-12-09 Production of carbon fibres

Country Status (2)

Country Link
DE (1) DE2158798C3 (en)
GB (1) GB1365165A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3341277A1 (en) * 1983-11-15 1985-05-23 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING INCREASED DENSITY OF POLYACRYLNITRILE FIBERS
DE102014219707A1 (en) * 2014-09-29 2016-03-31 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Melt spinnable copolymers of polyacrylonitrile, process for producing fibers or fiber precursors by means of melt spinning and correspondingly produced fibers

Also Published As

Publication number Publication date
DE2158798A1 (en) 1972-06-29
DE2158798B2 (en) 1973-11-22
DE2158798C3 (en) 1974-06-27

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Legal Events

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