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    • 8. 发明授权
    • Grafted para-aramid fiber and method of making
    • 接枝对位芳族聚酰胺纤维及其制备方法
    • US09388526B2
    • 2016-07-12
    • US14155456
    • 2014-01-15
    • Mark F Teasley
    • Mark F Teasley
    • D06M14/00D06M14/16D06M15/356B60C9/00C08J5/04C08J5/06D06M13/44D06M14/34D06M101/36
    • D06M14/16B60C9/0042C08J5/046C08J5/06C08J2300/22C08J2300/24D06M13/44D06M14/34D06M15/3562D06M2101/36Y10T428/2969Y10T442/60
    • A method of making a fiber comprised of poly(p-phenylene terephthalamide) having monomer groups grafted onto the fiber surface, the method comprising the steps of (i) providing a fiber of poly(p-phenylene terephthalamide) that has been dried to remove adsorbed moisture, (ii) treating the fiber, in a non-polar solvent that will not dissolve the fiber, with a phosphazene base that exhibits a pKa in dimethylsulfoxide of at least 21 so as to generate anions at the amide sites on the surface of the poly(p-phenylene terephthalamide) fiber, (iii) washing the base-activated fiber with an aprotic solvent, (iv) grafting a monomer onto the anion sites so as to introduce reactive functional groups onto the surface of the poly(p-phenylene terephthalamide) fiber, and (v) washing the grafted fiber of step (iv) with a protic solvent to extract any residual base compounds and grafting agents that are unbound to the surface of the fibers.
    • 一种由具有接枝到纤维表面上的单体基团的聚(对苯二甲酰对苯二胺)构成的纤维的方法,所述方法包括以下步骤:(i)提供已经干燥以去除的聚(对苯二甲酰对苯二胺)纤维 吸附的水分,(ii)在不溶于纤维的非极性溶剂中用在二甲基亚砜中表现出pKa至少为21的磷腈碱处理纤维,以在表面上的酰胺位置产生阴离子 聚对苯二甲酰对苯二胺纤维,(iii)用非质子溶剂洗涤碱活化的纤维,(iv)将单体接枝到阴离子部位上,以将反应性官能团引入聚(对 - 苯乙烯对苯二甲酰胺)纤维,和(v)用质子溶剂洗涤步骤(iv)的接枝纤维,以提取未结合到纤维表面的任何残留的碱性化合物和接枝剂。