Effect of Processing Conditions on the Interlaced Yarn

A new interlacer is used in this paper to investigate the effect of processing conditions on the properties of interlaced yarn. The experimental results show that number of tangles of interlaced yarn changes little with air pressure from 0.2 MPa to 0.5 MPa, and the number of tangles has a maximum value with yarn speed changing. For two yarn directions of entering and leaving yarn guide of interalcer, the yarn speed for the maximum number of tangles is 400 m/rain and 600 m/rain, respectively. The number of tangles changes with air pressure and yarn speed for two yarn directions is compared.     

低弹网络丝在喷嘴丝道内运动规律探讨

本论文借助于实验手段揭示网络加工过程中,低弹丝在喷嘴丝道内受气流作用时的运动规律和气流在喷嘴丝道内的流动规律,借以揭示网络丝的网络结形成机理,为合理设计网络喷嘴提供依据。     

摩擦－喷气复合纺成纱结构的研究

从理论和实际上论述了摩擦－喷气复合纺纱的加捻过程，并利用电子显微镜和示踪纤维方法对摩擦－喷气复合纱和色芯摩擦纺分别进行了分析和测量，发现摩擦－喷气复合纱的芯纱比包芯摩擦纱的芯纱具有较多的包缠纤维和较高的包缠捻度，表明摩擦－喷气复合纺纱有利于提高成纱强力．     

涤/棉网络复合纱张力探讨

对涤／棉网络复合纱的张力配置进行了实验论证，并阐述了张力对网络纱性能的影响。     

网络丝结构模型的研究

通过实验分析提出网络丝结构及其形成机理，并且在此基础上建立了网络结的结构模型，分析了加工工艺对网络丝结构和性能的影响，为开拓网络丝应用领域提供有益的理论依据。     

短纤长丝气流复合纱结构及工艺探讨

本文提出了一种将短纤纱与长丝通过喷气网络技术复合的新颖加工方法．这种气流复合纱既能体现传统混纺纱的优良性能，又具有特殊的外观效应和良好的经济价值，为机织、针织混纺产品的开发提供了新的途径．文章同时也对气流加工工艺作了有益的探讨．     

玻璃纤维/聚丙烯长丝喷气混纤纱力学性能研究

利用电镜观察玻璃纤维／聚丙烯长丝喷气混纤纱的结构，并通过对单纱热压，分析纱结中玻璃纤维的状态；在DCS500岛津试验机上测试了喷气混纤纱的性能。通过研究得到：喷气混纤纱的拉什强度和模量、纱线断裂伸长率受玻璃纤维／聚丙烯丝的混合程度、玻璃纤维在纱线中的状态、纱干表面聚丙烯纤维丝圈状态影响。     

转杯内纱线形状及其张力分析

详细分析了转杯内纱线的受力情况，得出了求解纱线曲线形状和纱线张力的有效方法，求得纱段离开假捻盘表面进入出纱管时的分离点轨迹方程，并且指出：在纱线一周回转运动中，由于分离点不同，导致其切向角不同，进而影响到纱线曲线形状和纱线张力也跟着有所变化，但变化一般不大，故可把纱线运动看作为近似稳定来进行力学分析。     

须条与长丝间距对Sirofil成纱结构性能的影响

分析了Sirofil纺纱过程中“V”形区的动态变化及粗纱须条与长丝间距大小对“V”形区形状和单纱受力的影响,认为间距增大会使“V”形区夹角增大、单纱段长度变长,并以此为依据,保持其他工艺参数不变,改变粗纱与长丝间距大小,试纺Sirofil纱,通过理论分析和实验比较讨论间距大小对Sirofil成纱结构性能的影响。结果表明：随着间距增大,成纱直径系数趋小、毛羽减少、强伸性与条干均呈非单调性变化;综合考虑成纱结构和性能,在其他参数相同时,Sirofil最佳成纱间距为12～16mm。     

Mathematical Characterization of Twisted Yarn

Twist leads to yarn torsion,which influences the physical and mechanical properties of yarn or fabric directly.In this paper,according to the basic principle of space geometry,the space geometric model of yarn was established,then the linking number,twisting number,and writhing number of elastic rod model were defined.The reason of yarn snarling was analyzed based on the energy,and the relation between yarn snarling and yarn torsion was studied according to White formula.The results show when tow ends of yarn are fixed,the linking number is constant,which means the sum of twisting number and writhing number for yarn torsion deformation and bend deformation is constant.     

影响纱线强力的因素

纱线强力是衡量纱线质量的重要指标。从理论上介绍了纱线强力的构成和影响因素,并通过实验研究了棉纱强力与其天然转曲数、短绒率之间的关系。     

喷气纱径向结构研究

采用汉密尔顿转移指数方法分析了喷气纱、环锭纱截面内纤维的径向分布规律,通过转移指数的计算得出了涤棉混纺喷气纱中包缠纤维和纱芯的基本组成及涤纶纤维线密度对包缠纤维数量的影响。     

The Yarn Curve and Tension in Rotor Spinning

The effective way of finding the yarn curve shape and tension of OE（open end） yarn inside the rotor is carried out and treated by dividing the yarn curve into two parts, from which the trajectory of the yarn sliding on the navel surface is also obtained. It is pointed out that the yarn curve shape and tension will both fluctuate with the trajectory＇s revolving cycle inside the rotor. However, the fluctuation is not too great, so the motion can still be regarded as approximately steady for dynamic analysis.     

涤棉赛络菲尔纱纺纱实践

通过对三种不同纱支的涤棉赛络菲尔纱在不同捻度和须条间距下进行的试验,得出了纺纱工艺参数(捻系数、须条间距)与纱线质量(强度、条干、毛羽)的关系,找到了三种不同纱支纺纱的较佳工艺组合,为涤棉赛络菲尔纺纱实践提供了参考。     

Research on Evenness of Woollen Cashmere Yarn

Parameters influencing the evenness of the woollen cashmere yarn were analyzed,and fifty batches of yarns with fineness of 38.5 tex were used to study the quality control parameters in relation to the evenness.Through statistical analysis,the models of yarn evenness were built.Moreover,the relationship between the evenness of spinning yarn and roving yarn was also investigated.The results showed that a positive correlation existed between them,and the amount of thin place per kilometer was the most importan...     

集聚毛纱性能的测试分析

本文对25tex（40公支）的集聚毛纱和普通环锭毛纱的毛羽、条干均匀度、强力等性能进行了测试，分析了它们的性能差异及其原因。     

机织间隔织物柱纱高度的确定

机织间隔织物的厚度由柱纱的高度决定.为了确定影响柱纱高度的因素,从几何结构角度出发,定义了影响机织间隔织物柱纱形态的5个结构参数,并建立了结构参数间的几何关系.通过将柱纱高度计算值同实测值的比较,发现计算值与实测值吻合得较好,证明所建立的柱纱结构参数间几何关系能够很好地反映实际情况.     

Study on Spinning and Properties of PLA Yarn

The essay recommends the various properties of polylactic-acid yarns in order to know them in a new step.Designing the process and spunning of the PLA yarn,analyzing the points of the processes.The PLA yarn is processed with different methods.The properties such as the strength and elongation,the frictional resistance are analyzed.The relationship between the strength and the twist factor was determined.So the basic properties of the PLA yarn is determined.Through the comparison of various parameters,a thorough understanding of the basic properties of PLA yarn,thereby determining the best PLA yarn production and use conditions,and for the PLA yarn production and provide technical support.     

开发羊绒细号纱针织产品的研究

为了开发细号羊绒纱针织产品，选用不同线密度的羊绒纱、棉纱、Ｔ／Ｃ混纺纱、涤纶低弹丝和丙纶长丝在单面圆形纬编机上进行了编织试验。作了上机对比及交织试验，测出了各纱线的强度、最大伸长率、对成圈机件的摩擦系数、最大喂纱张力、最小最大线圈长度。最大允许喂纱张力及最大最小线圈长度之差可综合评价线线的可编织性。羊绒纱的摩擦系数普遍较大，而其强度还不及棉纱的一半，最大允许喂纱张力仅为涤纶纱的１／５。羊绒纱的最小线圈长度为２．８～３．５ｍｍ，最大线圈长度能够测出，说明羊绒纱的可编织性较差。试验表明，用单面纬编机生产以羊绒为正面添纱、交织纱在织物反面的添纱组织，具有羊绒效果且服用性能良好。为了顺利地进行生产，对编织工艺、成圈过程中各阶段纱线的受力情况、上机工艺参数、机器选择和染色工艺等作了分析。     

Experimental Simulation and Analysis of the Yarn Motion Track in a Hairiness-Reducing Nozzle

A visible magnified and simulated nozzle was designed and installed on a winding machine according to the similarity principle of Reynolds number,to study the yarn motion track in hairiness-reducing nozzle.High-speed photography was used to observe the yarn instantaneous motion state in the nozzle.The results show that the yarn motion track seems to be a cylindrical helix which is close to inner wall in the twisting chamber and kept the same with different technical parameters,such as diameter of the twisti...