熔纺氨纶的流变性能  

The Study on the Rheological Property of Melt-Spun Spandex

作　　者：刘鑫 

机构地区：[1]北京中丽制机工程技术有限公司,北京101111

出　　处：《合成纤维》2013年第10期6-8,共3页Synthetic Fiber in China

摘　　要：研究了聚氨酯(TPU)切片、氨纶无油丝和不同混合比例的TPU与交联剂的混合物的流变性能,发现4种样品在熔融状态下均为切力变稀流体,熔体的剪切黏度随剪切速率的增大而减小;交联剂加入越多,熔体剪切黏度越大,在同样剪切速率下其熔融温度越高;随着熔融温度提高,熔体的剪切黏度减小。目前纺丝生产的经验值是TPU切片的熔融温度约为210℃,熔体管路及纺丝箱的温度约在200℃左右。Through testing the rheological property of polyurethane （TPU） chip, oil-free spandex and blend of TPU and cross-linking agent by different mixing ratio, it was found that the melting state of four melt samples were shear thinning fluid, melt viscosity decreased with shear rate increasing; melt viscosity in- creased with cross-linking agent increasing, melting temperature was higher at the same shear rate; melt viscosity decreased with melting temperature rising. According to the production experience, the melting temperature of TPU chip is about 210 %, the melt temperature in melt pipe and spinning beam is about 200 %.

关 键 词：聚氨酯 氨纶无油丝 交联剂 流变性能 黏度 剪切速率 

分 类 号：TQ342.2[化学工程—化纤工业]