Influence of Spinning Technology on Dye Uptake of Modified Polypropylene Fiber

By adding small amount of olefin polymer additive, the dyeability of polypropylene fiber can be improved. Research results show that the improvement of dyeing performance of modified PP fiber is mainly due to the formation of looser structure of PP matrix and the micro-channels among additive particles in blended fiber. The dye uptake of drawn fibers decreases with drawing ratios obviously and changes with temperature of heat plate and heat roller a little.     

染料在共混丙纶中的吸附和扩散

通过采用添加少量烯烃类高聚物的方法,制得可染共混丙纶,对其染色速度和染色平衡进行了研究。研究结果表明,染色速度与染色温度、染料结构有很大的关系,染色的等温吸附线属于Nernst型。     

抗菌防螨腈纶染色时染料的扩散过程

常规的染整理论无法直接反映染料向纤维内部的扩散过程,该文定义新的染色概念K/S/CF,通过测定染色后纤维的K/S值和染料的上染量CF,直接研究染料在抗菌防螨腈纶中阳离子染料的扩散过程.由于在纺丝原液中添加了少量的抗菌防螨剂,因而在纤维内部形成较大的微洞和毛细孔,染色时阳离子染料向纤维内部扩散有许多新的特点.     

复合增强材料的非破坏检测

主要介绍了目前在复合材料非破坏检测方面国内外常用的几种方法,并介绍了其中几种方法的基本原理和它们各自的特点及适用领域.