High-strength polyamide fiber
PCT No. PCT/JP94/00281 Sec. 371 Date Oct. 24, 1994 Sec. 102(e) Date Oct. 24, 1994 PCT Filed Feb. 23, 1994 PCT Pub. No. WO94/19517 PCT Pub. Date Sep. 1, 1994.To provide a polyamide fiber such as polyhexamethylene adipamide fiber having high tenacity and excellent tenacity retention after vulcanizatio...
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| creator | TUDUKI MICHIKANE OKANO RYOJI SAITO ISOO NAGAHARA HIDEO |
| description | PCT No. PCT/JP94/00281 Sec. 371 Date Oct. 24, 1994 Sec. 102(e) Date Oct. 24, 1994 PCT Filed Feb. 23, 1994 PCT Pub. No. WO94/19517 PCT Pub. Date Sep. 1, 1994.To provide a polyamide fiber such as polyhexamethylene adipamide fiber having high tenacity and excellent tenacity retention after vulcanization and GY fatigue life. This fiber is a high tenacity polyamide fiber, preferably a polyhexamethylene adipamide fiber comprising at least 95% by mole of hexamethylene adipamide units and having a sulfuric acid relative viscosity of at least 3.0, said polyamide fiber satisfying the requirements: (a) differential birefringence delta DELTA n>/=-5x10-3 to 0x10-3, (b) long period (Dm) in the direction of fiber axis: Dm>/=105 A, and long period (De) in the radial direction of fiber: De=90 to 130 A, (c) main dispersion peak temperature (T alpha ) in mechanical loss tangent (tan delta ) curve as obtained by viscoelastic measurement: T alpha >/=125 DEG C., and preferably further satisfying the requirements: (d) birefringence DELTA n>/=60x10-3, (e) crystal orientation function fc>/=0.88, and (f) amorphous orientation function fa=0.70 to 0.85. |
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This fiber is a high tenacity polyamide fiber, preferably a polyhexamethylene adipamide fiber comprising at least 95% by mole of hexamethylene adipamide units and having a sulfuric acid relative viscosity of at least 3.0, said polyamide fiber satisfying the requirements: (a) differential birefringence delta DELTA n>/=-5x10-3 to 0x10-3, (b) long period (Dm) in the direction of fiber axis: Dm>/=105 A, and long period (De) in the radial direction of fiber: De=90 to 130 A, (c) main dispersion peak temperature (T alpha ) in mechanical loss tangent (tan delta ) curve as obtained by viscoelastic measurement: T alpha >/=125 DEG C., and preferably further satisfying the requirements: (d) birefringence DELTA n>/=60x10-3, (e) crystal orientation function fc>/=0.88, and (f) amorphous orientation function fa=0.70 to 0.85.</description><edition>6</edition><language>eng</language><subject>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</subject><creationdate>1996</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19960507&DB=EPODOC&CC=US&NR=5514471A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19960507&DB=EPODOC&CC=US&NR=5514471A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TUDUKI; MICHIKANE</creatorcontrib><creatorcontrib>OKANO; RYOJI</creatorcontrib><creatorcontrib>SAITO; ISOO</creatorcontrib><creatorcontrib>NAGAHARA; HIDEO</creatorcontrib><title>High-strength polyamide fiber</title><description>PCT No. PCT/JP94/00281 Sec. 371 Date Oct. 24, 1994 Sec. 102(e) Date Oct. 24, 1994 PCT Filed Feb. 23, 1994 PCT Pub. 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No. WO94/19517 PCT Pub. Date Sep. 1, 1994.To provide a polyamide fiber such as polyhexamethylene adipamide fiber having high tenacity and excellent tenacity retention after vulcanization and GY fatigue life. This fiber is a high tenacity polyamide fiber, preferably a polyhexamethylene adipamide fiber comprising at least 95% by mole of hexamethylene adipamide units and having a sulfuric acid relative viscosity of at least 3.0, said polyamide fiber satisfying the requirements: (a) differential birefringence delta DELTA n>/=-5x10-3 to 0x10-3, (b) long period (Dm) in the direction of fiber axis: Dm>/=105 A, and long period (De) in the radial direction of fiber: De=90 to 130 A, (c) main dispersion peak temperature (T alpha ) in mechanical loss tangent (tan delta ) curve as obtained by viscoelastic measurement: T alpha >/=125 DEG C., and preferably further satisfying the requirements: (d) birefringence DELTA n>/=60x10-3, (e) crystal orientation function fc>/=0.88, and (f) amorphous orientation function fa=0.70 to 0.85.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | 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 |
| title | High-strength polyamide fiber |
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