空心锭花式纺纱机主从式多微机控制系统的研究

介绍了已研制成功的以PC机为核心的空心锭花式纺纱机主从式多微机控制系统的总体方案和软硬件组织结构,纺纱运转实验表明,该系统取得了令人满意的控制效果.该系统的研制成功,解决了国内空心锭花式纺纱机与微机控制技术在机电一体化技术融合中的难题.     

花式纺机多单元变频控制系统的研究

介绍了花式纺纱机多单元变频控制系统，即以交流频器对花式纺纱机各运行罗拉进行转速调节，以PC机作为控制器，并开发一套软件系统用以提供对生产进行控制的人机界面。     

Computational Simulation of Complex Structure Fancy Yarns

A study is reported for mathematical model and simulation of complex structure fancy yarns. The investigated complex structure fancy yarns have a multithread structure composed of three components -core, effect, and binder yams. In current research the precondition was accepted that the cross-sections of the both two yarns of the effect intermediate product in the complex structure fancy yarn remain the circles shaped, and this shape does not change during manufacturing of the fancy yarn. Mathematical model of complex structure fancy yarn is established based on parameter equation of space helix line and computer simulation is further carried out using the computational mathematical tool Matlab 6.5. Theoretical structure of fancy yarn is compared with an experimental sample. The simulation system would help for further the set ofinformation in designing of new assortment of the complex structure fancy yarns and prediction of visual effects of fancy yarns in end-use fabrics.     

基于花式纱线结构的抗静电羊绒织物的开发

以涤纶基导电长丝为芯纱、锦纶低弹丝为固结纱、羊绒粗纱经牵伸后为饰纱,开发了4种抗静电羊绒花式纱线（花式平线、波形线各2种）,并分别制成纬平织物.对织物的抗静电性能进行测试,对比试验结果表明,抗静电羊绒花式纱线织物的电荷面密度仅为同线密度纯羊绒织物的1/8.同时分析了花式纱线的结构和包缠捻度的大小对织物抗静电性能的影响,研究发现：花式平线的导电效果优于波形线;随着捻度增加,由抗静电羊绒花式纱线制成的织物电荷面密度有减小的迹象.     

神经网络技术在精纺粗花呢起毛起球等级评定中的应用

以精纺粗花呢纯毛织物为例,探讨纤维、纱线、织物结构因素及后整理工艺条件对精纺粗花呢织物起毛起球的影响.采用BP神经网络方法,建立纱线和织物结构参数与织物起毛起球性之间的关系.根据各种影响因素的变化预测精纺粗花呢起毛起球等级.     

高速空心锭子的研制

本文采用有限元法计算了高空速空心锭子的临界转速和振动形态,分析了结构参数对临界转速的影响,设计并制造了高速空心锭子样件,并对样件进行了模态测试,以验证理论计算的正确性。最后测试了空心锭子在各转速下的振幅及噪声,结果表明:所研制的空心锭子达到了设计要求,能用于纺纱生产。     

三组分花式线的强伸性能预测与分析

为了研究三组分花式线的力学性能,对其强力的构成进行理论预测和试验分析,从花式线组成出发,分析了三组分花式线的结构和影响因素;然后通过拉伸应力-应变曲线,对常见三组分花式线进行了强伸性能的测定;最后,对3种三组分花式线的强力进行了理论预测和试验分析。结子线的强伸性能有较大差别;圈圈线的强伸性能主要由芯纱决定;氨纶包缠纱由氨纶提供弹性,由包缠在氨纶外侧的非弹性纱决定纱线的强力。     

转杯纺纺制花式纱方法的评述

根据转杯纺纱的特点,对转杯纺纺制花纱的研究进行了系统论述,展示国内外研究的一些方法,并提出了该领域的几个前沿课题。     

摩擦纺纱中一种纤维分梳和输送装置的试验和分析

本文分析了目前粗支纱摩擦纺机和细支纱摩擦纺机的特点。作者设计了一种纤维分梳和输送形式。试验表明,该形式适纺支数范围较宽(148—18.5tex),能以1—2根条子喂入,纺制纯棉纱和各种纤维的混纺纱;可纺制内外层的纤维组分不一样的夹花纱;在安装附加装置后也可纺制包芯纱和花色纱。该装置机构简单,占地面积小,可供设计中、粗支纱摩擦纺纱机时参考。     

Production of Silk & Wool Blended Worsted Cloth

Wool & silk blended fancy suiting is desinged. Through trial-production with silk sliver and Australian wool top, the spinning technology is investigated, and the relationship of spinning technology, blending ratio and yarn construction is discussed.     

Design and Numerical Simulation of Low-Fiber Hollow Spindle in Air-Jet Vortex Spinning

Based on the mechanical system of free-end fibers and the analysis of pulling free-end fibers out of the spun yarn during spinning,a low-fiber hollow spindle is designed and the air distribution of fluent field is simulated numerically. The negative pressure effect is much bigger at the top of low-fiber hollow spindle than that in Murata No.861,which is more conducive for single fiber to get into the channel of hollow spindle. The tangential velocity in 0-3 mm at the top of hollow spindle increases and the fluctuation of radial velocity is much stronger,which enhance the wrapping effect. In the addition,the distribution of axial velocity remains the same.     

Testing of Anti - stripping Property of Friction Spun Core Yarn

Friction spun core yarn has two components: filament core and staple fiber sheath. Under axial rubbing action, the failure mode of the core yarn is the stripping of the sheath from the core. This paper introduces a method to test the anti - stripping property of the core yarn. With a modified Universal Testing Machine, the stripping resistance of friction spun core yarn can be continuously measured. Some factors Influencing the measurements are discussed in detail. The testing results are compared with those from a Y731 Yarn Abrasion Tester and fur - ther confirmed by weaving practice.     

熟条HVI测试性能与转杯纱强力之间关系的研究

选取30种纯棉普梳熟条,分别生产58.3tex和18.22tex转杯纱,再用多种数学方法分析熟条HVI测试性能与转杯纱强力之间的关系。结论对实际生产中的配棉、熟条生产工艺的优化以及成纱质量控制都有一定的指导意义。     

空心锭子差捻包缠纱捻度作用研究

简述了空心锭子差捻包缠纱的成纱过程，论述了空心锭子差捻包缠纱的包缠捻度、加捻捻度对纱线性能的影响。     

Empirical Model for Evaluating Covered Effect on Polyimide/Metal Wire Cowrapped Yarn by Response Surface Methodology

To accurately evaluate and predict the covered effect of cowrapped yarn,a novel characterization is performed by covered ratio and fineness. Polyimide / metal wire co-wrapped yarn which was designed for applications in aerospace and composites was developed through hollow spindle spinning process. Core yarn speed,hollow spindle rotating speed,and wrapping yarn twist were selected as three main factors that affected spinning process. An empirical model indicating relationship between spinning parameters and covered effect was established based on response surface methodology( RSM). The results show that wrapping yarn twist contributes greatly to smooth wrapping process. Core yarn speed and spindle rotating speed are significant impact factors of covered effect and they interact significantly in covered ratio, but indistinctively in fineness.     

STRUCTURAL VARIATIONS OF HOLLOW SPINDLE WRAP SPUN YARNS

The structure of a hollow spindle wrap spun yarn depends greatly on the steadiness of bindertension and of balloon rotation.The two commonly used binder bobbin forms,the cop type andthe flanged type,both as sources of spinning condition fluctuation,are examined in order to revealtheir effects on the wrap spun yarn structure.False twist is introduced on hollow spindle spinningmachines in order to avoid strand breaks before it is tightly wrapped up.However,an investigationof the false twisti g-wrapping process shows that this inevitably causes irregular yarn tortuosity.     

摩擦纺包缠纱抗剥离性能的测试

推荐一种包缠纺抗剥离性能的测试方法。在电子万能试验机上,利用专用的测试装置可连续地测试覆盖纤维相对于芯纱剥离时的阻力;同时分析了影响测试结果的因素,并将结果与同种纱线在Y73l型抱合力仪上的耐磨次数进行比较,并在织造实践中予以验证。     

接结双层雪尼尔纱织物的设计与生产

为了开发雪尼尔纱的应用,运用接结双层组织与经重平组织联合,设计了具有一定纹样的雪尼尔纱织物.并对织造工艺作了简要介绍.     

关键层理论在保水开采中的应用

在绿色开采思想的指导下,对关键层理论在保水开采中的应用进行了分析。通过算例讨论了三者的关系并分析了岩层变形一渗流耦合系统的复杂性特征,提出应用复杂系统动力学理论解释突水机制的初步设想。研究表明,在承载关键层破断前,承载关键层同时也是保水关键层;在承载关键层破断后,不再具有隔水作用,而保水关键层此时由渗流关键层充当;如果承载关键层破断,并且渗流关键层不存在,则会发生突水现象。岩层变形一渗流耦合动力学系统是具有时变边界、非线性、非均匀性和非连续性等特征的复杂系统。将复杂系统动力学引入突水防治理论研究,可以从本质上描述突水的过程。     

中空纤维酶膜反应器制取DP8-12特殊糊精的工艺研究

采用聚砜中空纤维酶膜反应器控制淀粉的酶解, 以连续制备ＤＰ８ － １２ 特殊糊精, 同时获得麦芽低聚糖副产品－ 通过正交优化试验, 获得该系统的优化工艺条件, 为进一步试验提供实验基础