AbstractThe diffusion rate of an acidic dye (vylene Fast Blue 2P) into polycaproamide fibers along the direction parallel to the fiber axis (longitudinal diffusion rate) was obtained by measuring the dye penetration distance from a cross section of the sample fiber embedded in an acrylic resin. The following results were obtained. The longitudinal diffusion constant decreases monotonically with increasing draw ratio. The difference between the lateral dye diffusion constant and the longitudinal dye diffusion constant passes through a maximum near a draw ratio of 2. The activation energy for the longitudinal dye diffusion increases monotonically with draw ratio.
展开▼
机译:摘要 通过测量嵌入丙烯酸树脂的样品纤维横截面的染料渗透距离,得到了酸性染料(vylene Fast Blue 2P)沿平行于纤维轴线的方向向聚己酰胺纤维中的扩散速率(纵向扩散速率)。得到以下结果。纵向扩散常数随拉伸比的增加而单调减小。侧向染料扩散常数与纵向染料扩散常数之间的差值在拉伸比 2 附近通过最大值。纵向染料扩散的活化能随拉伸比单调增加。
展开▼