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 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: Th...

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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 MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS 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 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 used for reinforcing the cement and having a single fiber fineness of 50 to 200 dtex and a modulus of elongation of ≥300 cN/dtex, obtained using a polymer dope extrusion spinneret which have an extrusion opening circumference of 3 to 50 mm and in which the extrusion opening circumference of the polymer dope extrusion spinneret is ≥10 times the circumference of the obtained fiber, when the wholly aromatic polyamide is spun in a semi-dry and semi-wet state. COPYRIGHT: (C)2010,JPO&INPIT