棉型涤粘混纺细特纱线的生产

围绕涤粘混纺细纱条干均匀度和成纱强力两项主要指标，从原料选配、工艺配置等方面入手，介绍了提高棉型涤粘混纺细特纱线品质的有效方法。     

捻系数和混纺比与玉米纤维纱强伸性能的关系

为了了解玉米纤维纯纺纱捻系数、玉米纤维混纺纱混纺比对成纱强伸性能的影响，纺制了13种捻系数的18．2tex玉米纤维纯纺纱，不同混纺比例的18．2tex玉米纤维腈纶纤维混纺纱、玉米纤维大豆纤维混纺纱，测试了成纱断裂强力、断裂伸长率、断裂功及初始模量等强伸性能指标。结果表明：玉米纤维纯纺纱的临界捻系数在405．9附近；在玉米纤维腈纶纤维混纺纱中，随着玉米纤维含量从0增至100％，成纱强力呈非线性关系逐渐下降；对于玉米纤维大豆纤维混纺纱，随着玉米纤维含量的增加，成纱强力逐渐下降，当玉米纤维含量在90％左右时，强力处于最低谷，且低于玉米纤维纯纺纱。     

蚕丝／其它天然纤维复合丝织物前处理加工性能研究

本文主要研究蚕丝．棉、蚕丝／羊毛复合丝织物前处理工艺与产品性能关系。     

多功能负氧离子纤维纱的开发

介绍了多功能负氧离子纤维的性能特点,结合生产实践,通过工艺试验,分析了纤维性能,纺纱工艺参数对多功能负氧离子纤维纯纺和混纺纱质量的影响,探讨了提高成纱质量的技术措施.     

清梳联生产特细号纱的实践

为了探讨清梳联纺长绒棉的纺纱工艺,以CJ 7.3 tex为例,从原棉的选择、清梳联流程的配置以及工艺参数的设计等方面进行了分析.并通过试验测试了清梳半成品质量和成纱质量,进而阐述了清梳联设备的管理和清梳联高效率、低成本生产优质特细号高档纱的体会.     

基于小波和傅立叶变换的纱线波谱图计算

采用离散小波变换与快速傅立叶变换相结合的方法,先对纱线信号进行小波分解,再对各子带信号作快速傅立叶变换,从而得到各子带信号的频谱。截取相应频段,并在同一图形上显示,然后将各频率成分转换成相应的各波长分量,得到纱线波谱图。     

减少精梳棉纱毛羽的体会和探讨

成纱毛羽多而长且分布不匀，会影响织造工序产质量及成品匀染性。减少纺纱毛羽是一项系统工程，其重点应在细纱工序和络筒工序，再及前纺工序和原料。根据实践分析了毛羽形成原因，提出了减少毛羽的一些办法，并通过生产实例进行验证。加深了毛羽与加捻元件、集合器、络筒工序等关系的认识，认为机件同一性、管理规范化是减少毛羽的重要手段。     

Utilization of the yarn pullout test in estimation of the reserved energy of rib knitted fabrics

The yarn pullout test is a prevailing and particular method to evaluate the effects of yarn properties and the structural characteristics of the fabric on the fabric mechanical performance. In this research, a theoretical model of yarn pull out is presented to determine the reserved energy of weft-knitted fabrics with rib 1 × 1 structure. This model is based on the fabric dimensional properties, i.e. stitch length, wale density, yarn diameter and contact angle of yarns. In order to appraise the proposed model, five different double jersey weft-knitted fabrics with rib 1 × 1 structure were produced and exposed to pullout test. Comparison between deviations of theoretical results from experimental results demonstrates that the presented theoretical model exhibits a rational estimation of the reserved energy in these fabrics.     

Recycled carbon fibre-reinforced polypropylene thermoplastic composites

Comingled carbon fibre (CF)/polypropylene (PP) yarns were produced from chopped recycled carbon fibres (reCF) (20 mm in length, 7-8 μm diameter) blended with matrix polypropylene staple fibres (60 mm in length, 28 μm diameter) using a modified carding and wrap spinning process. Microscopic analysis showed that more than 90% of the reCF were aligned along the yarn axis. Thermoplastic composite test specimens fabricated from the wrap-spun yarns had 15-27.7% reCF volume content. Similar to the yarn, greater than 90% of the reCF comprising each composite sample made, showed a parallel alignment with the axis of the test specimens. The average values obtained for tensile, and flexural strengths were 160 MPa and 154 MPa, respectively for composite specimens containing 27.7% reCF by volume. It was concluded that with such mechanical properties, thermoplastic composites made from recycled CF could be used as low cost materials for many non-structural applications.     

小比例色纺纱的色相设计与色纺回花的使用

论述了小比例色纺纱的色相设计与色纺回花的使用方法，进而导出色纺回花和用量的便捷计算方法，达到纺回花的均匀合理使用。