WHOLLY AROMATIC POLYAMIDE YARN FOR REINFORCING CEMENT, AND METHOD FOR PRODUCING THE SAME

PROBLEM TO BE SOLVED: To provide a wholly aromatic polyamide yarn which uses a wholly aromatic polyamide yarn produced by a specific production method, is high in a modulus of elongation, is good in loosening and dispersibility in cement and in physical bonding to the cement, can produce cement mold...

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1. Verfasser:	TAKANO KYOSUKE
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING TEXTILES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a wholly aromatic polyamide yarn which uses a wholly aromatic polyamide yarn produced by a specific production method, is high in a modulus of elongation, is good in loosening and dispersibility in cement and in physical bonding to the cement, can produce cement molded articles hardly cracked, and is used for reinforcing the cement. SOLUTION: The wholly aromatic polyamide yarn for reinforcing the cement has a single fiber fineness of 50 to 200 dtex and a modulus of elongation of ≥300 cN/dtex, by spinning a wholly aromatic polyamide by a wet method or a semi-dry, semi-wet method, using a plurality of solvent-removing tanks having an immersion length of ≥10 m and having a solvent concentration gradient, in a process for removing a solvent after the extrusion of a polymer dope. COPYRIGHT: (C)2010,JPO&INPIT