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纱线强力是衡量纱线性能优劣的重要指标.但在实践中采用高强纤维纺纱有时却纺不出高强纱线.文章通过理论分析发现,纱线中纤维不但受到轴向拉力的作用,还受到垂直于纤维轴向的剪切力以及剪切力所产生的弯曲力矩、加捻所产生的扭转力矩的作用,因而纱线强力与纤维的耐弯曲破坏性能有关.用实验得到的数据进行线性回归分析证明,用来表示纤维耐弯曲破坏性能的勾接强度和单纱强度之间存在着较高的相关性,而纤维的轴向拉伸强度与其单纱强度之间的相关性较小,说明纤维的勾结强度比拉伸强度对纱线强度的影响程度要大.因此,在确定纱线捻度等纺纱工艺参数时,对于勾接强度较低的脆性纤维,应采用较小的捻系数. 相似文献
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针对兔绒纤维细而膨松、强度较低、抱合力差、可纺性能差的特点,结合棉、锦纶纤维的固有特性,采用半精纺工艺将3种不同性能纤维进行组合开发生产针织用纱,以达到纤维性能互补。文中以研制35.7 tex×2 50/30/20棉/锦/兔绒的半精纺针织纱线为例,进行了原料性能分析与选择、混纺比确定、纱线规格及工艺流程设计,并对兔绒预处理、和毛、制条、并条、粗纱、细纱、络并捻等工序的主要生产工艺参数与关键技术措施作了介绍。 相似文献
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锯齿式皮棉清理对机采棉性能的影响 总被引:1,自引:0,他引:1
经过不同皮清工序的机采棉纤维性能不同,本文针对锯齿式皮棉清理出的原棉进行比较研究。利用HVI对棉纤维的长度、强度、颜色、含杂率等各项指标进行检测和分析。研究结果表明:皮清工艺有利于改善原棉的外在指标,使纤维平整柔顺、色泽亮丽;但其对纤维的内在指标有较大的损伤,使纤维中短纤维含量上升,不利于纺纱。基于对锯齿式皮棉清理对机采棉性能的研究分析,建议企业积极采取有效措施控制,从而改善机采棉纱线的性能。 相似文献
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常规纤维性能正在逐渐提高,多数工业纤维已经基本达到最高性能和多功能,在实际应用中已基本能够满足需求;工程纤维及其纺织品的开发将是今后在纤维材料领域的重要方向。文章介绍欧美国家推出的几种具代表性的工程纤维、工程纱线与工程织物及其加工技术,指出欧美国家在工程纺织品领域的开发动向,并展望工程纺织品的发展前景。 相似文献
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为研究多元复合阻燃纱线中混纺比对纱线性能的影响规律,以芳纶1313纤维、阻燃黏胶和阻燃锦纶长丝为原料,纺制11种二元复合阻燃纱线和9种三元复合阻燃纱线,探究了芳纶1313纤维含量变化对纱线条干均匀度、纱线强力、毛羽指数、耐磨性能的影响。实验结果表明:纤维混纺比对混纺纱线的条干均匀性影响不显著,仅与纤维本身性能有关;多元复合阻燃纱线中芳纶1313纤维含量越多,纱线的断裂比强度、断裂伸长率和耐磨次数越大,阻燃锦纶长丝的加入会改善三元复合阻燃纱线的毛羽和耐磨性能。研究结果为阻燃纤维的选择以及阻燃混纺纱线的研究开发提供了理论指导和技术支持。 相似文献
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文章对阻燃粘胶纤维物理机械性能进行了实验测试分析,并与普通粘胶纤维进行了对比,阻燃粘胶纤维的回潮率、断裂强度、断裂伸长率、质量比电阻均比普通粘胶纤维差,但差异不大。在此基础上,开发了阻燃粘胶纤维纯纺纱线以及与莫代尔、涤纶的混纺纱线,分析了纺纱工艺流程和工艺参数。通过对纱线性能的测试分析,其各项性能均符合针织用纱的要求。 相似文献
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Yarn structure influences the configuration of the constituent fibers in the yarn and the comfort properties of the fabrics to a great extent. The fiber arrangement in the yarn has a major influence on the comfort-related properties such as thermal conductivity, air permeability, wickability, and moisture vapor permeability. This study dealt with the influence of process and material variables namely, polyvinyl alcohol (PVA) proportion, twist multiplier (TM), and spindle speed on microporous viscose yarn properties. Three-variable three-factor Box and Behnken method was used to investigate the individual and interaction effects of selected variables on yarn properties. The selected variables have a significant influence on all the yarn properties. The increase in PVA%, spindle speed, and TM reduces the specific volume and wickability of yarns and increases the tenacity and packing factor of yarns before dissolving the PVA fibers. With increase in spindle speed and TM, same trend was noticed after dissolving the PVA also. But the trend reverses with increase in PVA percentage after dissolution of PVA fiber. The increase in PVA percentage increases the specific volume and wickability of yarns and decreases the tenacity and packing factor of yarns after dissolution of PVA fiber. The optimized process parameters were obtained, and yarn was spun with the optimized parameters to validate the model. 相似文献
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为进一步拓展喷气涡流纺织品种及提高传统色纺纱加工效率,利用Box-Behnken设计实验方案,借助软件Minitab 16,分析喷气涡流纺工艺参数对竹浆纤维色纺纱性能的影响。结果表明:成纱工艺对色纺纱断裂强度的影响较为复杂,其中纺纱速度及纱线线密度对色纺纱断裂强度的影响受喷嘴气压不同取值影响;色纺纱条干不匀主要受纺纱速度和纱线密度影响,提高纺纱速度使纱线条干不匀先减后增,而减小纱线线密度将显著恶化色纺纱条干;色纺纱毛羽主要受喷嘴气压和纺纱速度影响,降低喷嘴气压及提高纺纱速度均会使纱线毛羽增加;色纺纱直径主要受喷嘴气压和纺纱线密度影响,增加喷嘴气压或减小纱线线密度,均会使色纺纱直径明显减小。 相似文献
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Binita Baishya Kalita Seiko Jose Sunita Baruah Sanghamitra Kalita Smita Rani Saikia 《Journal of Natural Fibers》2019,16(1):49-57
Roselle is a bast fiber, and its utilization as a textile fiber for the development of textile products is still scanty. A work has been attempted to develop yarn from Roselle. Fibers were extracted from Roselle bark by decortication and degummed in alkaline medium. The degumming process was optimized based on fiber yield and strength. The degummed fibers were then bleached by the hydrogen peroxide bleaching process. Degummed and bleached fibers were characterized by scanning electron microscope, Fourier transform infrared spectroscopy, and X-ray diffraction analysis. Degumming and bleaching results in enhancement of density, fineness, and brightness of Roselle fiber. A marginal decrease in tenacity of the Roselle fiber was observed after bleaching; however, the strength was not affected by degumming. Fibers were converted into fine yarn in the jute spinning system. The yarn properties inferred that the yarn possessed essential properties for the preparation of apparels and home furnishing. 相似文献
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Betel nut is one of the important fruits cultivated in tropical parts of the world. It generates a huge quantity of husk, which is a source of areca fiber. Both fine and coarse fibers are available in the husk. Different properties of fine areca fiber have been analyzed for qualifying its ability to convert into spun yarn. Fine areca fiber has good physical properties in terms of length, water absorption, maturity which makes it suitable for spinning. However, in case of strength and fineness it showed ordinary value compared to cotton fiber. Areca/cotton 50:50 blend 48 tex ring and rotor yarn has been produced and yarns showed tenacity 7.1cN/tex and 6.88 cN/tex accompanied by 6.81% and 6.35% elongation, respectively. The water absorption of areca/cotton blend yarn showed 4.8 times higher value than 100% cotton yarn. 相似文献
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为了研究竹炭改性涤纶纤维/棉混纺纱中竹炭纤维含量与混纺纱力学性能的变化关系,对不同混纺比混纺纱线在YG061电子单纱强力仪上进行拉伸性能、应力松弛性能测试,并对测试结果进行了分析和比较。结果表明:竹炭改性涤纶纤维/棉混纺纱的断裂强力随着竹炭改性涤纶纤维含量的增加先有逐渐减小的趋势,然后增大。竹炭改性涤纶纤维/棉的混纺比小于临界混纺比时,混纺纱的断裂伸长率变化趋于平直;一旦超过临界混纺比,随着竹炭改性涤纶纤维含量的增加,断裂伸长率迅速增大。在实际应用中,混纺纱最低断裂强度对应的临界混纺比在设计中应尽量避免选用。随着竹炭改性涤纶纤维含量的增加,混纺纱的弹性越来越好。 相似文献
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为研究长丝复合纺纱过程中由长丝与短纤维须条复合产生的不同纱线内部结构对纱线性能的影响,设计并建立了6种长丝复合纺纱线结构模型,分析和预测了模型对应的成纱性能,并进行实验验证,对比分析了各复合纺纱形式所得纱线的毛羽、条干、强伸性能。结果表明:相比单独的包芯结构和长丝单侧包缠结构,长丝由两侧对须条进行包缠优化了纱线结构,表现出更佳的复合纱拉伸和成纱条干性能;同时拥有长丝双侧包缠和包芯结构的复合纱,表现出最优的成纱强力和条干;较大的长丝与须条隔距与张力更有利于长丝束缚和控制纤维外露,有效降低成纱毛羽。 相似文献