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Composite fibres of partially crosslinked polyesters - offering a wool like feel from short spun fibres
Composite fibres of partially crosslinked polyesters - offering a wool like feel from short spun fibres
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机译:部分交联聚酯的复合纤维-短纺纤维具有羊毛般的感觉
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摘要
Conjugated filaments made of two materials extruded in parallel and used as chopped fibres to make yarns which handle like wool and have a shrinkage of 60, , pref. 40% and 7, pref. 7-10 semi-undulations/cm. Component resins are (I) polyethylene terephthalate of intrinsic viscosity 0.45-0.60 and crosslinked with 0.20-0.70 mole % of a trior tetrafunctional reagent, pref. trimethylopropane (II) polybutylene terephthalate incorporating 0.20-0.60 mole % crosslinking agent and having melt viscosity 4000 poises at 260 degrees C. Yarns incorporating 50-80% wt. I/50-20% wt II, made by coextrusion followed by drawing (x 2.6 - x 3.3) in steam at 80-100 degrees C and crimping at 100-150 degrees C.
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机译:由两种材料制成的共轭长丝平行挤出,并用作短切纤维,以制成像羊毛一样处理的纱线,其收缩率优选为60。 40%和7,偏好。 7-10个半波动/厘米。成分树脂是(I)特性粘度为0.45-0.60并用0.20-0.70摩尔%的三或四官能试剂pref交联的聚对苯二甲酸乙二醇酯。掺有0.20-0.60摩尔%交联剂并且熔体粘度为4000泊的三甲基丙烷(II)聚对苯二甲酸丁二酯在260℃下为泊。 I / 50-20%wt II,通过共挤出,然后在80-100摄氏度的蒸汽中拉伸(x 2.6-x 3.3)并在100-150摄氏度的压接下制成。
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