Ultra-oriented crystalline filaments and method of making same
    1.
    发明授权
    Ultra-oriented crystalline filaments and method of making same 失效
    超取向结晶丝及其制造方法

    公开(公告)号:US5733653A

    公开(公告)日:1998-03-31

    申请号:US643925

    申请日:1996-05-07

    摘要: Ultra-oriented, crystalline synthetic filaments with a combination of high tenacity, high dimensional stability, high modulus, and a high fraction of taut-tie molecular phase are produced by extruding a fiber-forming synthetic polymer melt into a liquid isothermal bath, withdrawing the filaments from the bath and then post-treating them at a very low draw ratio. The bath is preferably maintained at a temperature of at least 30.degree. C. above the glass transition temperature of the polymer to enhance the orientation and promote the formation of stable extended chains. Polymer filaments so produced are characterized in that they have ultra-high birefringence, high tenacity and modulus, a high dimensional stability, and a high fraction of taut-tie molecular phase.

    摘要翻译: 通过将形成纤维的合成聚合物熔体挤出到液体等温浴中,产生具有高韧性,高尺寸稳定性,高模量和高分子量拉伸分子相的组合的超取向结晶合成长丝, 从浴中取出细丝,然后以非常低的拉伸比进行后处理。 浴优选保持在高于聚合物的玻璃化转变温度至少30℃的温度下,以增强取向并促进形成稳定的延伸链。 其特征在于它们具有超高双折射,高韧性和模量,高尺寸稳定性和高分子量的分子相。