苎麻／涤Sirofil纱的性能研究

对苎麻/涤Sirofil纱的性能进行了研究，并与苎麻环锭纱、Siro纱、包芯纱、plyfil纱进行了比较。结果显示，苎麻/涤Sirofil纱的性能要优于对照纱。     

稀有金属钨丝合股设备研制和改造

通过研制稀有金属钨丝合股设备 ,并根据实际运行情况 ,对设备进行改造 ,完善了其加工性能 ,提高了产品的经济效益     

竹纤维的开发和应用

综述了竹纤维的研究意义、国内外研究现状,及其在纺织、经济墙板、造纸、竹炭纤维、竹/玻璃纤维复合等领域的应用,指出开发竹纤维具有很好的经济效益和社会效益。     

基于生存模型的上海F1赛事游客停留时间研究

采用文献资料法、三维摄像解析法,对获得2011年全国长投公开赛女子链球冠军张文秀的投掷技术进行拍摄、解析,对单、双脚支撑时间、旋转阶段时间特征、速度及加速距离变化、链球的旋转半径等进行运动学分析并与国外优秀女子链球运动员相比较,收集数据并作统计学处理。从录像和数据分析中,找出张文秀旋转技术上的不足,针对问题提出了改进旋转技术的建议,为训练提供参考,为提高我国链球运动水平提供理论依据。     

蚕丝的纤维化机理研究

本文阐明了以蚕丝蛋白的凝胶－溶胶转移和液晶态，拉伸与液晶的组合纺丝而纺成蚕丝纤维的机理。     

牵切苎麻在棉纺设备上的纺纱初探

对苎麻长麻纺（复精梳）工艺中的苎麻预并条和头道精梳条进行牵切,然后分别将其在棉纺设备上进行并条、粗纱和细纱加工。探讨牵切纱断裂强度与捻系数的相互关系,并对比分析牵切纱与常规纱的质量。结果表明,牵切纱临界捻系数αt 在405左右,苎麻牵切精梳纱的条干、粗细节、棉结及3 mm以上的毛羽与苎麻常规精梳纱的接近,且断裂强度优于苎麻常规精梳纱的。     

Effect of two separate fibre feed systems in rotor spinning on yarn properties

Opening of the fibres in all industrial rotor spinning units is being done by an opening roller, which intakes the fibres from one feed point. Increasing number of feed rollers from one to two may improve fibre opening on the opening roller by gradual loading of the opening roller, which may improve fibre orientation in the final yarn and yarn properties. In this research a modified SE-8 rotor spinning unit of Suessen was used in which two separate fibre feed systems were employed. Raw material used was 38 mm, 1.7 den viscose fibre, to spin a 40 tex yarn. Yarn properties produced with this unit, were compared with that of the original yarn. Yarn properties tested were tenacity, extension, work of rupture, mass irregularity and imperfections, abrasion resistance and hairiness, which were measured on Shirley (SDL) and keisokki yarn testing machines. Test results were analyzed by ANOVA for any difference between the means, and Tukey and Duncan for classification and ranking of the yarn properties. Test results showed that, tenacity, extension and work of rupture of the modified yarn increased in comparison to the original yarn. Its mass irregularity, number of thin places and neps, and hairiness decreased. Number of thick places and yarn abrasion didn’t change. According to the test results, it was concluded that increasing the number of feed rollers on the opening roller from one to two has improved yarn properties.     

Examining the effects of balloon control ring on ring spinning

The ring spinning process has been used to produce fine and high quality staple fibre yarns. The stability of the rotating yarn loop (i.e. balloon) between the yarn-guide and the traveller-ring is crucial to the success and economics of this process. Balloon control rings are used to contain the yarn-loop, by reducing the yarn tension and decreasing the balloon flutter instability. Flutter instability here refers to the uncontrolled changes in a ballooning yarn under dynamic forces, including the air drag. Due to the significant variation in the length and radius of the balloon during the bobbin filling process, the optimal location for the balloon control ring is not easily determined. In order to address this difficulty, this study investigates the variation in the radius of a free balloon and examines the effect of balloon control rings of various diameters at different locations on yarn tension and balloon flutter stability. The results indicate that the maximum radius of a free balloon and its corresponding position depend not only on the yarn-length to balloon-height ratio, but also on yarn type and count. A control ring of suitable radius and position can significantly reduce yarn tension and decrease flutter instability of free single-loop balloons. While the balloon control rings are usually fixed to, and move in sinc with, the ring frame, results reported in this study suggest that theoretically, a balloon control ring that always remains approximately half way between the yarn-guide and the ring rail during spinning can lead to significant reduction in yarn tension.     

Comparative study on the characteristics of knitted fabrics made of vortex-spun viscose yarns

Murata vortex spinning system is based on the air jet spinning system. The vast majority of previous works deal with the properties of vortex spun (VS) yarn and the spinning system. In this study, we investigated knitted fabrics from VS yarn in comparison with fabrics from ring (RS), compact (CS) and open-end rotor (OES) spun yarns made from viscose. The effect of yarn spinning system on dimensional and physical properties of knitted fabrics was explained with specific attention to fabrics from VS yarn. Shrinkage of fabrics from VS yarn has the lowest at widthwise direction, while having the highest at lengthwise direction. It is shown that the order of fabric spirality and twist liveliness for yarns from different spinning systems are quite similar. However, relation between loop shape factor and angle of spirality is inconsistent. Angle of spirality of fabrics from VS yarn is higher than fabrics from OES yarn, but lower than that of others. The bursting strength of fabrics from VS yarn is lower than that of those from RS and CS yarns and higher than that of those from OES yarn. From this study, it is also evident that fabrics from VS yarn have the lowest pilling tendency and highest resistance to abrasion.