Title:
SULFURIZED ACRYLIC FIBERS WITH HIGH STRENGTH AND HIGH TOUGHNESS, PROCESS FOR THEIR PREPARATION, AND COMPOSITE MATERIAL COMPRISING THEM
Document Type and Number:
WIPO Patent Application WO/1987/006276
Kind Code:
A1
Abstract:
Sulfurized acrylic fibers having a tensile strength of at least 3.5 g/d, a toughness of 10 or more in terms of the product (TE1/2) of tensile strength (T g/d) and square root of tensile elongation (E %), and a sulfur content of 0.5 wt % or more; a process for producing said fibers by heating acrylic fibers of at least 7 g/d in tensile strength in a sulfur-containing atmosphere; and a composite material reinforced by said fibers. The sulfurized acrylic fibers have high strength, high toughness, excellent heat resistance, excellent fire retardance, and excellent alkali resistance. Therefore, they are useful as a substitute for asbestos in the fields of heat- and flame-resistant textile products, reinforcement of autoclave-cured cement, abrasives, etc.
Inventors:
MATSUNASE TAKEO (JP)
TAKADA TAKASHI (JP)
TAKADA TAKASHI (JP)
Application Number:
PCT/JP1987/000219
Publication Date:
October 22, 1987
Filing Date:
April 09, 1987
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C04B16/06; D01F6/18; D01F6/38; D01F9/22; D01F11/06; D06M11/36; D06M11/57; (IPC1-7): D01F9/22; D01F6/18; D01F6/38; D01F11/06; D06M11/12
Foreign References:
| JPH04724967B | ||||
| JPH04729932B | ||||
| JPH05319692B | ||||
| JPH05419491B | ||||
| JPH05175119A | 1993-07-13 |
Other References:
OTANI SUGIO and Two Others (Authors) "Tanso Sen-i" 1 July 1983 (01.07.83) p.626 - p.627, p.628 - 630
See also references of EP 0263884A4
See also references of EP 0263884A4
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