Carbon fiber yarn

Details Carbon fiber yarn Carbon fiber yarn

1987-12-15

1989-05-02

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

With drafting

57200, D02G 302

Patent

active

048256358

ABSTRACT:
A process is provided for producing carbon fiber yarns which comprise an intimate association of carbon fibers having an average length of between 100 and 120 mm. The process comprises transforming tows of multifilaments whose count is between 0.5 and 1 dtex by cracking, by drawing, and controlled breaking to obtain long fibers having an average length of between 100 and 120 mm. These fibers are then transformed on standard spinning equipment for long fibers into a range of yarns which have counts ranging from Mn 1 to Mn 100. The yarns of the present invention can be used for making prepreg fabrics for composites, fabrics for dry and wet filtration, fabrics for making Faraday shields, fabrics for carbonization for carbon/carbon pieces and high-performance seals.

REFERENCES:
patent: 3841079 (1974-10-01), Ram
patent: 4051659 (1977-10-01), Blakelock
patent: 4159618 (1979-07-01), Sokaris
patent: 4219996 (1980-09-01), Edgawa
patent: 4444574 (1984-04-01), Tradewell et al.
patent: 4520623 (1965-06-01), Ogawa
B. Von Falkai: "Synthesefasern", 1981, pp. 247-268, Verlag Chemie, Weinheim, DE* p. 267, Colonne de gauche--Colonne de droite, Line 25.

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