HETEROCYCLE-CONTAINING AROMATIC POLYAMIDE FIBER, METHOD FOR PRODUCING THE SAME, CLOTH CONSTITUTED BY THE FIBER, AND FIBER-REINFORCED COMPOSITE MATERIAL REINFORCED WITH THE FIBER
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United States of America Patent
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Issued Date -
Feb 4, 2010
app pub date -
Dec 14, 2007
filing date -
Dec 15, 2006
priority date (Note) -
Abandoned
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Abstract
The heterocycle-containing aromatic polyamide fibers of the invention are excellent in balance among mechanical characteristics, particularly balance among tensile strength, initial modulus and strength in the direction perpendicular to the fiber axis, exhibit a high strength holding ratio under heat and humidity, and are excellent in flame retardancy, bulletproofness and cutting resistance, as compared to conventional aromatic polyamide fibers, and therefore can be favorably used in fields with severe mechanical characteristics and have stability to environmental variation. Accordingly, the heterocycle-containing aromatic polyamide fibers of the invention can be favorably used, for example, in fields including protective equipment, such as a helmet, a bulletproof vest and the like, a chassis for an automobile, a ship and the like, an electric insulating material, such as a printed circuit board and the like, and other various fields.
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