Morphology and Thermal Behavior of Polypropylene/Easily Hydrodegraded Polyester Blend Fibers

Ultrafine polypropylene fibers are prepared frompolypropylene/easily hydro - degraded polyester （PP/EHDPET） blend fibers, in which file EHDPET compo-nent is degradable by treating with NaOH - H2O solu-tion. We investigated the morphology of PP/EHDPETblend fibers before and after stretching and alkalinehydrolysis. Then thermal behavior of the blend has alsobeen studied.

超轻高强耐磨金彩纱线的开发

文中介绍了细旦黑色抗老化丙纶、黑色母粒细旦黏胶、土豪金色反光涤纶的性能特点,探讨了采用50%的细旦黑色抗老化丙纶、43%的黑色母粒黏胶与7%的土豪金色反光涤纶生产混纺纱线的生产实践,介绍其工艺流程和各工序工艺控制要点,测试混纺纱线的成纱性能。并且开发出一种新型的轻盈、保暖、耐磨、抗起球而且时尚的专配保暖打底裤及裤袜的纱线。

Alkaline Hydrolysis of PP/EHDPET Blend Fibers

Polypropylene superfine fibers or cell porous fibers were prepared from the bi-component blend fibers of polypropylene/easlly hydro-degraded polyester(PP/EHDPET)by alkaline hydrolysis process. EHDPET is a kind of copolyester that can be rapidly hydro-degraded in the hot alkaline solution. This paper discussed the kinetics of alkaline hydrolysis of EHDPET, and the effect of catalyst, bulk ratio and the content of polypropylene grafted maleic anhydride (PP-g-MAH) on the alkaline hydrolysis process. Meanwhile, the morphological change of the outer surface of blend fibers during this process was also investigated by the technology of scanning electron microscope (SEM).

防止涤丙纱色差的措施

涤丙混纺纱不需染整而直接用于织造 ,因此对成纱色泽有严格的要求。针对易产生色差的几个主要方面 ,采取相应的措施 ,可从根本上杜绝色差的产生。

涤/丙混纺纱线的开发

介绍开发涤／丙混纺纱线的过程所采用的工艺流程和设备调整方法，研究了工艺特性、产品特征和影响工艺的主要因素及其解决方法，纺制出适应市场需求的新型纱线。