低扭矩单纱的纤维强度利用效率研究  

Fiber tenacity utilization efficiency of low torque singleyarn

作　　者：郭滢[1] 

机构地区：[1]南通大学纺织服装学院

出　　处：《上海纺织科技》2018年第1期4-7,共4页Shanghai Textile Science & Technology

基　　金：南通市应用基础研究计划项目(GY12015006);常熟科技发展计划项目(CG201601)

摘　　要：分别采用标准强度测试方法、变隔距低速拉伸测试法、断裂端显微镜分析法,对比分析了环锭单纱与低扭矩单纱的拉伸断裂特点及纤维强力利用效率。结果表明,在同捻度情况下低扭矩纱中的纤维具有更高的强度利用效率,甚至在捻度更低的情况下,低扭矩纱仍能保持较高的强度。变隔距低速拉伸测试发现,低扭矩纱受拉断裂时,常在拉伸曲线上最大比应力后又出现一个或多个断裂峰值。这些特点印证了关于纱线内部结构的分析及推论。The tensile failure and fiber tenacity utilization efficiency of ring single yarn and low torque single yam are compared and examined with standard test method, low speed method with different test gauges, and microscopy observation method respectively. Experimental results indicate that the low torque single yams have higher fiber tenacity translation efficiency under the same twist level. Low torque single yarns can keep relatively high strength even at lower twist. The resuhs of low speed tenacity test show that on tensile curves of low torque yams, there is often one even more peak after the maximum specific stress. Those failure features can be explained from structural characteristics of yams.

关 键 词：断裂 低扭矩纱 强度利用效率 结构 

分 类 号：TS101.921.3[轻工技术与工程—纺织工程]