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    • 84. 发明授权
    • Process for producing antipilling acrylic synthetic fiber
    • 生产抗张力丙烯酸合成纤维的方法
    • US4447384A
    • 1984-05-08
    • US339008
    • 1982-01-12
    • Hitoshi TamuraKatsuhei Shigeoka
    • Hitoshi TamuraKatsuhei Shigeoka
    • D01F6/18
    • D01F6/18
    • An acrylic fiber produced by the dry-spinning process having, as characteristic properties, a tensile strength of 1.2-2.5 g/denier, a knot strength (g/denier)-knot elongation (%) product of 25 or less and a boiling water shrinkage rate of 5% or less. Said fiber can be obtained by dry-spinning a spinning solution of acrylonitrile type polymer containing 85% by weight or more of acrylonitrile, stretching the resulting fiber in hot water at a stretch ratio ranging from 1 to 2, subjecting the stretched fiber to a drying and relaxing to give the fiber a shrinkage of 10-40% and then stretching it at a stretch ratio of 1.2-2.3 at a temperature of 180.degree.-210.degree. C.
    • 通过干法纺丝法制造的丙烯酸纤维具有1.2-2.5g /旦尼尔的拉伸强度,25或更小的结强度(g /旦尼尔) - 结长度(%)积和沸点 收缩率在5%以下。 所述纤维可以通过将含有85重量%以上的丙烯腈的丙烯腈型聚合物的纺丝溶液进行干纺,以1〜2的拉伸倍率在热水中拉伸而得到纤维,使拉伸纤维进行干燥 并松弛,使纤维的收缩率为10-40%,然后在180-210℃的温度下以1.2-2.3的拉伸比拉伸。