公开(公告)号：US3878178A

公开(公告)日：1975-04-15

申请号：US35479273

申请日：1973-04-26

申请人： DU PONT

发明人： GUINN GAIL CROLLEY ,  JENNY JR JOSEPH W

IPC分类号： D01F6/18 ,  D02J1/22 ,  C08F15/40 ,  C08F47/00

CPC分类号： D02J1/228 ,  D01F6/38

摘要： This application discloses acrylic fibers having high tenacity, a break elongation of 8-18% and a shrinkage in boiling water of 13-26% in combination with an X-ray porosity index less than about 1.5 in the void size range of each of 45-90A and 90-140A and a molecular orientation of at least about 66.5, the particular fiber having the chemical composition of 93-95% acrylonitrile, 5-7% methylacrylate and up to 0.5% sodium styrene sulfonate. The fibers are prepared by specific drawing, drying and redrawing steps.

摘要翻译： 本申请公开了具有高强度，断裂伸长率为8-18％，沸水收缩率为13-26％的丙烯酸纤维，以及在45度的空隙尺寸范围内的X射线孔隙率小于约1.5 -90A和90-140A，分子取向为至少约66.5，特定纤维的化学组成为93-95％丙烯腈，5-7％甲基丙烯酸酯和至多0.5％苯乙烯磺酸钠。 纤维通过特定的拉伸，干燥和再拉伸步骤制备。