搜索结果: 271-285 共查到“知识库 纺织技术其他学科”相关记录354条 . 查询时间(1.234 秒)
无捻纱退维时间的分析
退维时间 无捻纱
2009/10/14
无捻纱的退维工艺是织制无捻纱织物的关键工艺,退维过程的控制一直是困扰水溶性维纶伴纺与混纺产品开发的难点。为准确测试无捻纱退维的时间,采用纱线强力测试法和称重法对无捻纱的退维时间进行验证测试,2种测试方法基本相符,30 min左右合股纱线上的维纶能够全部溶解,为实际生产中无捻纱织物退维时间的确定提供了可靠的依据。
织物缩水机理及其数学模型的研究与应用
数学模型 缩水机理 织物
2009/10/13
通过解析织物缩水率与织物结构参数、织造条件、原料特性之间的关系,基于生产实践中人们对织物缩水现象的认识,从平纹织物着手,建立了织物的缩水模型,给出了根据织造工艺技术条件估计缩水率的方法及计算公式。通过实验测试棉织物、粘胶织物的缩水率,并与理论计算结果进行了比较分析,验证了理论结果的可靠性。还利用此模型,分析讨论了纱线直径、经纱屈曲波高、织物纬密、纱线溶胀率对织物经向缩水率的影响。
织物折皱回复规律与建模
回复 规律 织物折皱
2009/10/13
根据纺织材料黏弹性理论,研究织物的折皱回复变化规律。在织物摩擦约束力偶与其弯曲曲率成正比的假设条件下,把织物看成是具有内摩擦约束的固体黏弹性材料,利用标准线性固体和滑块并联组成的模型,对织物的折皱回复行为进行分析,把织物的加压弯曲、释压回复等行为过程用同一模型联系起来,在此基础上推导出织物折皱回复角的回复规律方程。并以毛织物和毛/涤混纺织物为实验材料进行验证,经实际测试证明,该模型能较好地反映织物...
转杯复合纱的强伸性能
性能 强伸 转杯复合纱
2009/10/13
从理论和实验两方面对3种不同结构的棉/氨转杯复合纱的强伸性能进行了分析和比较。实验结果和理论分析均表明,转杯复合纱的强伸性能不仅受其组分拉伸性能的影响,还受到成纱方式的影响;包芯纱具有较高的断裂强力,其次是平行纱,而包缠纱的最低;对于断裂伸长而言,包缠纱最大,其次为包芯纱,平行纱最小。
Waxs Studies of Salix Viminalis Wood Susceptibility to Alkali Treatment
X-ray diffraction cellulose mercerization WPG index willow wood
2009/6/16
Comminuted willow wood (Salix viminalis) was treated with sodium hydroxide solutions
of 10, 15, 20 and 25% NaOH concentration, for 15, 30, 45, 60 and 90 minutes for each
case of NaOH concentration. ...
Antibacterial Properties of Silver-Finished Textiles
silver nano-particles silver submicro-particles silver-finishedtextiles
2009/6/15
In this paper, the results of research on the bacteriostatic efficacyofselectedsilverparticles:
nano-Ag, sub-micro-Ag, AgCl in the finishingoftextilesarepresented.Theshapeandsize of the silver compou...
Multi–Criterion Assessment of Pneumatically Spliced Cotton Combed Ring–Spun Yarns
yarn unknotted spliced yarn ends Integral Index of Quality
2009/6/15
The results of examinations of the strength and geometric dimensions of pneumatically spliced cotton combed ring spun yarns are presented. Unknotted spliced joints were linked using a Jointair 4941 sp...
Characteristics of Compressible Air Flow in an Interlacer and Yarn Entanglement
Interlacer Numerical calculation Compressibility Limited Mach number
2009/4/29
The present study is concerned with numerical simulation of compressible air flow in a yarn duct of an interlacer and the relation between air flow and yarn entanglement. A nozzle of circular pipe of...
Quantitative Grading of Spun Yarns for Appearance
Yarn appearance Optical yarn diameter Yarn grade Objective yarn grading system
2009/4/22
The general appearance of a yarn is one of the primary qualities affecting its commercial value. The method of grading spun yarns by subjective visual examination has long been recognized as a practi...
Effects of Cross-Sectional Shape of Yarn Duct of Interlacer on the Properties of Interlaced Yarn
Interlacer Interlaced yarn Number of tangles Strength of tangles
2009/4/15
This study deals with the effect of cross-sectional shape of yarn duct of interlacer on the performance of interlaced yarn and aims at finding the interlacers with better performance. The performance...
Interlacing Process of Multiple Filament Yarn
Interlacing process Interlaced yarn Interlacer Yarn motion Airflow
2009/4/15
In interlacing process, a multiple filament yarn, which runs in an air jet device called an interlacer, is hit by high-speed air jet and then, tangling parts and opening parts are made alternatively...
Geometry Effect of Air Suction Gun on the Yarn Suction Characteristics
Suction gun Geometry effect Yarn suction force Yarn suction efficiency
2009/4/9
We experimentally discussed the effects of airflow geometries in an air suction gun on the suction characteristics of running yarn. Geometry parameters focused on were 1) compressed-air inflow angle ...
4月9日，东华大学现代纺织研究院常务副校长俞建勇，在上海纺织工程师研修基地培训中心作了一个《现代纺织的发展趋势》的报告，现将主要内容摘录如下，以满足大家需要。
Hairiness Values of Polyester/Viscose Ring-Spun Yarn Blends
polyester viscose blends ring-spun yarn properties hairiness pilling
2009/2/19
In this work, 0.133 - 0.166 tex and 38 mm of fiber length of polyester and viscose rovings of 591 tex (αtex 8) were blended variously (polyester/viscose 35/65%; polyester/viscose 50/50%; polyester/vis...
Effect of Process Parameters on the Twist of 100% Polyester OE Rotor Yarns
rotor spinning twist twist difference opening roller polyester yarn
2009/2/19
This work investigates the influence of rotor spinning process parameters on the twist difference values of 100% polyester rotor spun yarns. Eight different types of opening roller, four different typ...