High-strength polyamide fiber
    1.
    发明授权
    High-strength polyamide fiber 失效
    高强度聚酰胺纤维

    公开(公告)号:US5514471A

    公开(公告)日:1996-05-07

    申请号:US318847

    申请日:1994-10-24

    IPC分类号: D01F6/60 D02G3/00

    摘要: 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.gtoreq.-5.times.10.sup.-3 to 0.times.10.sup.-3, (b) long period (Dm) in the direction of fiber axis: Dm.gtoreq.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..gtoreq.125.degree. C., and preferably further satisfying the requirements: (d) birefringence .DELTA.n.gtoreq.60.times.10.sup.-3, (e) crystal orientation function fc.gtoreq.0.88, and (f) amorphous orientation function fa=0.70 to 0.85.

    摘要翻译: PCT No.PCT / JP94 / 00281 Sec。 371日期:1994年10月24日 102(e)日期1994年10月24日PCT 1994年2月23日提交PCT公布。 第WO94 / 19517号公报 日期:1994年9月1日。提供聚酰胺纤维,例如具有高强度的聚己二酰己二酰己二胺纤维,硫化后的韧性保持性和GY疲劳寿命。 该纤维是高韧性聚酰胺纤维,优选包含至少95摩尔%己二酰己二胺单元并且硫酸相对粘度至少为3.0的聚己二酰己二胺纤维,所述聚酰胺纤维满足以下要求:(a)差示双折射三角 光纤轴方向的长度(Dm):Dm> / = 105A,纤维径向的长周期(De):De = 90〜130A,(c)通过粘弹性测定获得的机械损耗角正切(tanδ)曲线中的主分散峰温度(Tα):Tα> 125℃,优选进一步满足以下要求:( d)双折射Δε= 60×10 -3,(e)晶体取向函数fc> = 0.88,(f)非晶取向函数fa = 0.70〜0.85。