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公开(公告)号：EP0649921A1
公开(公告)日：1995-04-26
申请号：EP94907666.5
申请日：1994-02-23
IPC分类号： D01F6/60 , D01F11/08 , D06M13/144 , D06M13/165 , D06M13/244
CPC分类号： D01F6/60 , Y10T428/2913 , Y10T428/2969
摘要： To provide polyamide fibers such as polyhexamethyleneadipamide fiber having high strength and excellent strength retention after vulcanization and GY fatigue life as a rubber reinforcement. This fiber is a high-strength polyamide fiber, preferably a polyhexamethyleneadipamide fiber composed of at least 95 mol % of hexamethyleneadipamide units and having a relative viscosity in a sulfuric acid of at least 3.0, and satisfies the following requirements: (a) δΔn≧-5x10⁻³-0x10⁻³, wherein δΔn is differential birefringence, (b) Dm≧105 Å and De≧90-130 Å, wherein Dm is a longperiod in the direction of fiber axis and De is one in the direction perpendicular thereto, and (c) Tα≧125 °C, wherein Tα is a principal dispersion peak temperature in the mechanical loss factor (tan δ) curve obtained by dynamic viscoelastic measurement, and preferably satisfies further the following requirements: (d) Δn≧60x10⁻³, wherein Δn is birefringence, (e) fc≧0.88, wherein fc is degree of crystalline orientation, and (f) fa = 0.70-0.85, wherein fa is degree of non-crystalline molecule orientation.
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公开(公告)号：EP0649921B1
公开(公告)日：2000-05-17
申请号：EP94907666.5
申请日：1994-02-23
IPC分类号： D01F6/60 , D01F11/08 , D06M13/144 , D06M13/165 , D06M13/244
CPC分类号： D01F6/60 , Y10T428/2913 , Y10T428/2969
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