共查询到20条相似文献,搜索用时 156 毫秒
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为探讨天然彩棉梳理工艺,介绍了天然彩棉的性能特点和主要梳理针布的选用情况.从降低梳棉工序彩棉的棉结、短绒入手,进行了梳理工艺的优选,并采取了各项技术措施,使彩棉生条和成纱质量得到有效改善. 相似文献
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为改善绿色彩棉的吸湿性能,且避免影响绿色彩棉的色光,决定以果胶酶代替碱处理对绿色彩棉进行处理.为评价果胶酶对绿色彩棉的处理效果,对处理后的绿色彩棉的吸湿性和色泽稳定性进行了测试分析.利用正交试验和极差分析对影响果胶酶处理效果的主要因素--果胶酶质量分数、温度、时间、pH值进行了分析和优化:温度为50℃、pH值为8.0~8.5、果胶酶质量分数为0.6%时对吸湿性的改善最好;随着pH值的增大绿色彩棉色差的变化非常明显,pH值=8.5时颜色最深.研究果胶酶处理对绿色彩棉吸湿性和色泽稳定性的影响,有利于更好地控制处理绿色彩棉产品的质量. 相似文献
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测试了天然彩棉纤维的摩擦系数,得出天然彩棉纤维的摩擦系数较小的结论。论述了摩擦系数对彩棉生产和彩棉织物的影响。 相似文献
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简要介绍了彩棉、远红外丙纶纤维、Modal纤维的特性,探索利用彩棉与远红外丙纶纤维混纺、彩棉与Modal纤维赛络纺,并进行相应的织造加工的关键因素和解决措施。 相似文献
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《国外纺织技术(纺织针织服装化纤染整)》2001,(6)
国外彩棉产业发展现状 美国彩棉研究水平领先1 988年 ,美国德克萨斯州棉花研究中心的两位棉花育种专家开始专门从事彩棉的选育工作 ,于 1 992年进行彩棉的规模生产和市场销售 ,并将培育出的绿色和棕色的彩棉品种进行注册登记。到 1 994年 ,美国生产的彩棉、原棉已达到 2万 t,占全美国棉花总产量的 1 %。美国在彩棉品种培育、生产开发、产品销售等领域都处于世界领先地位。 埃及彩棉产业蓄势待发埃及彩棉的育种与裁培始于 70年代中期 ,由埃及国家产业部所属的全国农业科研中心直接领导 ,实行封闭式管理 ,对外保密。据悉 ,埃及现已培育… 相似文献
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紧密纺纱技术及其相关技术探讨 总被引:12,自引:12,他引:12
介绍了紧密纺纱技术的原理以及目前国外已推出的几种紧密纺纱技术;分析了紧密纺针织用纱、色织用纱及股线产品的性能,在分析紧密纺纱线在后道工序中的加工特点后,对我国发展紧密纺纱技术有关问题进行了探讨。指出应正确认识纺纱三角区的作用和毛羽问题,合理控制集聚程度,生产不同风格的产品,并积极进行纱线捻接技术、纺纱器材及产品开发等配套技术的研究。 相似文献
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介绍了近年世界棉纱质量的发展现状及趋势,指出了针织用纱的质量要求日益提高。并结合我省针织用纱的质量状况,阐述了我省创针织用纱名牌应解决的生产技术关键及措施、建议。从而进一步稳定、提高针织用纱质量,赢得市场,争创名牌。 相似文献
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Sirofil-竹节复合纱纺纱工艺设计及性能探讨 总被引:1,自引:0,他引:1
在改造过的环锭细纱机上将Sirofil纺纱技术与竹节纱纺纱技术相结合,通过对长丝与须条间距、长丝预加张力以及捻系数选用不同水平值,对Sirofil-竹节复合纺纱工艺进行了优化设计,通过工艺优化,改善和提高了纱线的各项性能。 相似文献
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The use of hollow/microporous yarns plays an important role in enhancing the thermo‐physiological comfort properties of fabrics. Depending on structural variations in hollow yarn, heat and moisture regulation behaviours of fabrics can be affected significantly. In this study, three types of hollow cotton yarn fabrics, produced by introducing polyvinyl alcohol (PVA) filament in the core, PVA staple fibres in the blend and PVA filament in doubling with cotton spun yarn, are studied. All three types of pre‐hollow yarns and reference yarns are made with a variation in spinning technique (single roving/double roving) to prepare eight single jersey knitted fabrics. The hollow/microporous structure of the yarn is created by dissolving the PVA fibres using hot washing of the fabrics. On overall evaluation of the fabric’s thermo‐physiological comfort properties, the doubled hollow yarn fabrics are found to be better than other fabrics. In general, thermal resistance, thermal absorptivity, wicking and drying properties of all types of hollow yarn fabrics increase after repeated laundering, while air permeability, water vapour permeability and water absorbency of hollow yarn fabrics mostly decrease. In contrast with fabrics made from yarn produced through single roving technique, use of double roving technique only improves fabric water vapour permeability. 相似文献
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As a basis for yarn evenness measurement, a novel method based on two orthogonal charge-coupled device (CCD) sensors has been devised. We present a system for analyzing yarn evenness from the coefficient of variation of yarn perimeter, treating the yarn cross-sectional shape like an ellipse with uneven edges. The system architecture, algorithm flow, mathematical principle, and the experimental validation of the proposed technique are presented. A comparison between the proposed method and the conventional Uster Tester 5 and Lawson-Hemphill was made. Results agree quite well with existing methods hence can be implemented as an alternative technique for yarn evenness quantification. 相似文献
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Digital image analysis techniques in the spatial and frequency domains for twist measurement of yarns are described. A spatial technique is developed to extract the twist angle through the analysis of the yarn core image. Then, a Fourier transformation technique is applied to yarn images to measure the orientation of the fibre on the yarn surface. Finally, a hybrid method that incorporates frequency domain filtering prior to spatial analysis is proposed. The trials show that spatial analysis is a fast method and can successfully predict the twist in the yarn. Fourier transformation technique is quite sensitive to the protruding fibres obstructing the yarn surface, which may result in measurements having high variations. For yarns having little amount of hairs protruding from the core, the results agreed reasonably well with actual twist levels. Frequency domain filtering in conjunction with the spatial analysis of the yarn surface is found to be superior in terms of accuracy. The twist values calculated using the more reliable diameter measurements with back-lit images together with twist angles from the front-lit images are found to be more accurate when compared with the actual values. 相似文献