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高产梳棉机梳理作用的理论探讨 总被引:1,自引:0,他引:1
张文赓 《东华大学学报(自然科学版)》2011,37(3)
对近代棉纺高产梳棉机发展中盖板反转、减少盖板根数、增加前后固定盖板和棉网清洁器等,提出了不同的理解并作出了理论分析.研究认为盖板反转时,转移分梳和接触分梳两种基本分梳作用仍不变,盖板反转使得纤维和纤维束在锡林盖板梳理区作反螺旋形的回旋运动,增加了盖板反复梳理的效能.对固定盖板梳理作用与工作区气流和棉网清洁器间的关系作了分析. 相似文献
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任欣贤 《西安工程科技学院学报》1996,(2)
对棉纺翼锭加捻过程中的加捻点、加捻区、纱条真捻的获得及捻度的变化规律等问题进行了理论探讨和实验研究,证实该加捻过程唯一的真实加捡点为锭翼侧孔.锭翼顶孔不仅有捻陷与假捻作用,而且有阻捻作用.使用假捻器时,对纺纱段纱条的增捻效应是假捻及阻捻现象共同作用的结果. 相似文献
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随着市场竞争的日益加剧,人们对纺织产品质量的要求也越来越高,而当今各纺织企业普遍使用的A512环锭细纱机的牵伸机构已越来越显现其产品品种适应性差的缺点,通过对A512牵伸系统的技术改造,使得该机型加工的产品质量各项指标都有明显改善,这在很大程度上满足了老机改造要求,具有一定的推广价值。 相似文献
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IntroductionIn thelast fewyears ,the application of natural dyes intextile dyeing is being explored worldwide .In comparisonwith synthetic dyes , the natural dyes are generallyenvironmental friendly and nontoxic . Natural dyes canexhibit better biodegradability and generally have a highercompatibility with the environment . Correlative researchwork is being under way around the world on theapplication of natural dyes . The introduction of naturaldyes into modern dyeing procedures that can be … 相似文献
35.
A new class of novel polymeric crosslinging agent (NPCA), which contained silane coupling group and the epoxy groups, was designed and synthesized in our laboratory. NPCA was a non-formaldehyde multifunctional crosslinking polymer. The cotton fabrics dyed with 8.0% (owf) Vinylsulpone-type dyes were treated with 3.0%- 4.0% NPCA, 0.5 mol/L potassium thiocyanate as a catalyst, then padded through two dips and two nips to reach a wet pickup of 80%- 85%, then dried at 80℃ for 2 minutes and cured in oven at 140- 150℃ for 3 minutes. Crocking fastness and fixation (%) were improved with up to 1.0 -1. 5 units, 35%- 50%, respectively. And there was little difference between the color yield of dyed fabrics before and after the treatment at certain conditions. The possible crosslinking mechanism of NPCA was also investigated. It was concluded that NPCA can improve colorfastness of cotton fabric by means of the three-dimensional network, covalent bonding and other molecular forces. 相似文献
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陈淑秋 《江南大学学报(自然科学版)》1991,6(4):90-95
本文在分析目前世界棉纺技术发展情况的基础上,结合各种高技术在棉纺工业上的采用,预测到21世纪初棉纺工艺全流程向连续化方向发展,建立全自动化的工厂。 相似文献
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利用光电转换装置对细纱机后胶辊滑溜率进行了测试与分析.实验结果对细纱机后胶辊的使用有一定的参考价值. 相似文献
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Jute fibre properties,viz. linear density,mechanical properties,and fibre staple length were analyzed in this paper. Morphology,lignin content,and composition analysis for jute fibres were investigated in order to give further understanding of the fibre properties changing during the chemical treatment and yarn producing processes. The results show that jute properties are greatly changed during the processes of chemical treatment,breaking carding,and finisher carding,whereas slight changes can be found in ... 相似文献