聚酯/粘胶混纺空气变形丝的性能

由聚酯和粘胶长丝生产混纺空气变形丝,以研究不同混纺比对物理性能的影响。研究揭示:这种混纺空气变形丝的外形膨松度随聚酯比例的减少而增大,并在聚酯/粘胶质量分数比为50:50的混纺纱中膨松度最大。在混纺空气变形丝中,随聚酯比例的减少,丝圈的不稳定性增大,而收缩率减小。在聚酯/粘胶混纺空气变形丝中,随聚酯比例的减少,强度和伸长下降。     

PET／PA混纺喷气变形纱的物理性能

为了研究不同混纺比对纱线物理性能的影响,用聚酯（PET）和聚酰胺（PA）复丝制成了混纺喷气变形纱,并测定纱线的性能,如丝圈频率、不稳定性、外形膨松度、沸水收缩率、抗张强度及断裂伸长率。结果发现,与PET含量较高的混纺纱相比,PA含量较高的混纺纱其丝圈不稳定性较低,外形膨松度较小,但伸长率和绞纱收缩率较大。     

空气喷射变形丝的芯吸效应

利用毛细管上升法和液滴吸收法研究了聚酯、黏胶、聚酰胺、聚酯/黏胶和聚酯/聚酰胺空气喷射变形丝的芯吸率和吸湿率。结果表明,空气变形后复丝的芯吸率提高。与聚酰胺和黏胶空气喷射变形丝相比,聚酯空气喷射变形丝显示出较大的芯吸率。黏胶空气喷射变形丝显示出最低的芯吸率。与同样的未变形丝相比,混合的空气喷射变形丝显示出较大的芯吸率。     

Effect of polyester and elastane linear density on the physical and mechanical properties of dual-core-spun cotton yarns

ABSTRACT

The use of single-core elastic spun cotton yarns is well established in textiles and denim industry but interest in the use of dual-core-spun yarns has started to grow only recently. The aim of this study was to investigate the effect of polyester and elastane linear density on the physical and mechanical properties of dual-core-spun cotton yarns. Yarn samples were prepared on industrial-scale spinning machines using cotton as the sheath fibers and two different linear densities of polyester and three different linear densities of elastane filaments in the core. Statistical analysis of the results revealed that yarn tenacity, elongation, uniformity, and hairiness are significantly affected by the linear densities of both the polyester and elastane filaments in the core, with statistically significant interaction between them. Yarn imperfections (IPI), however, are affected mainly by the polyester denier, while the elastane linear density did not show statistically significant effect on the IPI. Regression equations for different yarn properties were also developed which showed fairly high values of coefficient of determination (R-sq).     

亚麻长麻/涤纶长丝复合纱的纺制及其性能比较

为比较不同复合加工方法所纺亚麻长麻/涤纶长丝复合纱的性能,通过现有纺纱设备改造设计了纺纱工艺,纺制了具有相同捻度的5种复合纱;对复合纱的外观特征、拉伸性能和毛羽进行了测试与分析。结果表明:采用不同成纱方法的复合纱均具有明显的捻度分布不匀特征;包缠结构复合纱相对于捻合结构复合纱具有更好的包覆效果;相对于断裂强力而言,复合加工对亚麻纱最小强力的提高效果更好,并可显著降低强力不匀率;除同捻向包缠纱外,各复合纱均可实现免浆织造;赛络菲尔纺和并捻复合对提高成纱断裂伸长率效果显著,而包缠复合降低亚麻纱毛羽的效果最好。     

喷气纺普通聚酯纱与超细聚酯纱的结构与弯曲性能研究

对由普通与超细聚酯纤维纺成的村田喷气纺纱线的结构进行了研究和比较。用带有数码相机的光学显微镜进行纱线的结构研究。由拍摄的照片可得到很多纱线结构参数,如纱线正常区域的直径、包覆区域的直径、纱线中心处纤维的螺旋角、纱线表面纤维的螺旋角、被包覆纤维包覆的包覆区域的长度、包覆纤维包覆的区域、包覆区域纱线的弯曲刚度等。结果表明:由超细纤维纺纱制成的纱线的弯曲刚度比普通纤维的弯曲刚度低;纤维类型影响包覆摩擦因素以及纤维包覆区域;由超细纤维纺成的纱线的直径比普通纤维的小。     

Weight reduction of microfibre polyester fabric and the effect on its physical and mechanical properties

For the present work, a heat‐set microfibre polyester woven fabric was treated with five different sodium hydroxide concentrations in similar conditions. Their physical and mechanical properties were studied and discussed. Changes in eight properties due to the weight reduction, i.e. surface properties, tear strength, crimp, compression, pressure recovery, crease recovery, abrasion and weave density which are reported in this work were not available for any type of weight reduced polyester fabrics in the cited literature. Results show that the weight reduction decreases yarn and fabric strength, fabric abrasion resistance, fabric tear strength and bending stiffness. On the other hand, it increases fabric thickness under low pressure, crease recovery angle, air permeability and drape of the fabric. The treatment showed no significant effect on the surface properties of the samples.     

Investigation of the thermal comfort properties of knitted fabric produced from Estabragh (Milkweed)/cotton-blended yarns

In this research, the thermal comfort properties of a newly known fiber called Estabragh (Milkweed) have been investigated. Estabragh is a natural hollow fiber which is expected to provide excellent insulation properties due to their individual characteristics. Thermal comfort is one of the important fabric properties especially in the area of sport application which is considered in this research. For investigating this, 50–50% Estabragh/cotton-blended spun yarns was produced using short-staple spinning system. Two different sets of interlock-knitted samples using 100% cotton and Estabragh/cotton-blended yarns were produced individually on a flat knitting machine. Heat transfer rate, water vapor transmission, air permeability, and capillary absorption of produced fabrics were measured and compared. The results revealed that the vapor transmission rate through the knitted samples produced from Estabragh/cotton-blended yarns was 66.4% which is higher than that of the 100% cotton samples as 60.22%. It was also found that 100% cotton samples exhibited less moisture transfer rate than cotton/Estabragh samples. As far as heat transfer is concerned, it was concluded that the heat transfer ability of 100% cotton samples is higher than that of the Estabragh/cotton samples by about 47%. It was also shown that the capillary absorption of samples produced from Estabragh/cotton-blended yarns was higher than that of the 100% cotton samples. Compared to the 100% cotton samples, air permeability of Estabragh/cotton-knitted structures was found to be relatively low. The results totally proved that Estabragh fibers have a lot of advantages in order to be used in different fields of applications especially in sport areas.     

Acoustic properties of sound-absorbing polyester fabrics woven with thick staple and thin draw textured yarn for use in interior decoration

Environmental pollution in our daily life because of noise is an increasing public health concern. We designed and woven with staple- and draw-textured yarns, for sound absorbance purposes. For wefts and warps, two different thicknesses of the thick staple-yarn and thin draw-textured filament yarn were used. The prepared fabrics were classified in porous, medium, and dense, on the basis of their densities and air permeabilities, and the sound absorption coefficients of the fabrics were found to be linearly related to the air permeability. The sound absorption coefficient determined by the impedance tube method was higher for porous fabrics compared with that for dense fabrics in the high frequency region. By the reverberant field method, the sound absorption coefficients for all fabrics were highest in the low frequency region. Porous fabrics exhibited a shorter reverberation time and a higher sound absorption coefficient than dense fabrics owing to their good sound absorption property.     

纳米抗菌涤/棉针织内衣研发与性能研究

选用纳米抗菌涤/棉混纺纱,测试了纱线的基本性能,开发了以平针添纱、双罗纹和二色彩横条罗纹为纬编结构的针织物和内衣产品,给出了纬编织造和后整理的工艺与参数,分析了所开发面料的服用性能和抗菌功能。结果表明:该纳米抗菌涤/棉混纺纱具有良好的服用舒适性能和抗菌功能,适于纬编针织内衣产品的开发。     

沟槽涤纶经编运动服装面料及其性能的研究

介绍了沟槽涤纶经编运动服装面料的导热排汗功能的形成机理及其强力、耐磨和透气等物理机械性能，并简述了它在编织和染整加工过程中需注意的问题。     

Investigating the effects of draw ratio,hot-pin temperature,and overfeeding on the color values of air-jet textured polyester yarns

In this study, influence of draw ratio, hot-pin temperature, and overfeeding on the color values of air-jet textured yarns, which were produced from polyester partially oriented yarn, was investigated. Two different air-jet textured yarns were produced by setting the value of only one variable to its minimum and maximum, while the reference values selected for the production of the reference yarn were used for the rest of the variables. Six different air-jet textured yarns, which were produced by varying draw ratio, hot-pin temperature, and overfeeding, and the reference air-jet textured yarn were dyed with the same dyeing procedure. Some physical properties such as linear density, tenacity, and breaking extension of the air-jet textured yarns were measured and images of the cross-section of the yarns were taken. The color coordinates of the dyed yarn samples were also measured. The color differences of six yarn samples compared to reference air-jet textured yarn were calculated. Changing draw ratio, hot-pin temperature, and overfeeding affected the color values of the air-jet textured yarns according to the results. It was found that, overfeeding is the parameter that affects the color values of the air-jet textured yarn most.     

The dimensional and mechanical properties of wool/polyester fabrics made from vortex and ring-spun yarns

Fabric woven from wool/polyester (PES) Murata vortex spun (MVS) blend yarn is a commercially viable proposition particularly on the basis of advantageous wear-resistant properties, compared with fabric made from traditional worsted ring-spun yarn. However, in some early industrial trials with fabric made from 45/55-blend wool/PES MVS yarn, significantly greater relaxation shrinkage was found relative to comparable worsted ring-spun fabric. It was noted at the time that the amount of relaxation shrinkage in MVS fabric could be reduced to a large extent by using steamed MVS yarn.

In this study, the extent of variations in the dimensional and mechanical properties of fabric samples woven from a combination of steamed and unsteamed MVS yarn and equivalent worsted ring-spun yarn is examined. In general, greater hygral expansion and relaxation shrinkage were found in loom-state fabrics made from unsteamed MVS yarns, whereas the fabric made from steamed MVS and ring-spun yarns gave relatively low levels of relaxation shrinkage and hygral expansion. Permanent setting of fabrics, by pressure steaming, was found to be more effective than yarn pre-steaming in reducing relaxation shrinkage levels of fabrics made from unsteamed MVS yarn. After pressure steaming, all fabrics showed similar levels of relaxation shrinkage and hygral expansion.

Permanent setting of the fabrics, by pressure steaming, resulted in similar levels of relaxation shrinkage and hygral expansion, irrespective of the yarn production method; relaxation shrinkage fell to around 1% and hygral expansion increased by about 1%, relative to the loom-state samples. MVS fabrics were relatively heavier and fuller and had a firmer handle than the worsted ring-spun fabrics, reflecting the greater fabric weight, thickness and shear rigidity measured on these fabrics. These attributes are associated with different structures of the worsted ring-spun and MVS yarns used to make the fabrics.     

纳米抗菌涤／Modal混纺纱与针织产品的开发

选用纳米抗菌涤／Modal混纺纱,开发双罗纹纬编针织物和系列针织内衣产品,给出了纬编织造和染色后整理的工艺与参数,测试了混纺纱和织物的性能,说明该纳米抗菌涤／Modal混纺纱具有良好的服用性和抗菌性,适于针织内衣产品。     

Thermo-physiological comfort properties of double-face knitted fabrics made from different types of polyester yarns and cotton yarn

Double-face knitted fabrics with hydrophobic inner and hydrophilic outer layers are characterised by their advantageous thermo-physiological comfort property that facilitates the transport of sweat from skin to outer fabric layer where it can be evaporated easily. In this study, for the production of double-face knitted fabrics, cotton yarn as hydrophilic yarn type and five different polyester filament yarns consisting of standard polyester, hollow polyester, micro polyester, textured polyester and textured micro polyester as hydrophobic yarn type were used. In order to determine the thermo-physiological comfort properties of the fabrics, air permeability, water vapour permeability, thermal conductivity, thermal resistance and overall moisture management capacity were measured. The results were comparatively analysed using statistical methods. The experimental results demonstrated that the polyester-type yarns and the combinations of them with the cotton yarn in fabric layers affected the thermo-physiological comfort properties significantly. The fabrics with polyester-type inner face and cotton outer face showed the best moisture transmission properties.     

导电涤纶纱连续制备工艺与性能

为提高涤纶的导电性能,以涤纶长丝纱为基材,采用基于苯胺原位聚合的连续导电方法,制备涤纶/聚苯胺（PET/PANI）复合导电纱。探讨了导电处理工艺氧化剂浓度、处理掺杂酸和苯胺的浓度及处理速度对导电纱导电性能的影响,并测定与分析了纤维的表面形貌、化学结构、热学性能及力学性能。结果表明：经导电处理后,ＰＥＴ纱线表面及内部包覆并填充了导电态PANI;反应液浓度及处理速度对PET/PANI复合导电纱的电导率有较大影响,制得的导电纱电导率最高可达1.5 S/cm以上;PANI的存在降低了PET的热稳定性;相比PET纱,PET/PANI复合导电纱的断裂强度和断裂伸长率有小幅增长,但初始模量却有较大的下降。     

A study on the suitability of which yarn number to use for recycle polyester fiber

Recycling and reuse of materials is not new to the textile and apparel industry. Recycling refers to the breakdown of product into its raw materials in order for the raw material to be reclaimed and used in new products. The aim of the study is that the examining the usage of recycle polyester fiber (rPET) in different yarn count and blend ratio and so to determine which count and blend ratio is more suitable for rPET usage. For this aim, 24 yarns containing recycle polyester fiber, virgin polyester fiber and viscose fiber as raw material were obtained in different yarn counts which are Ne 10, Ne 20, Ne 30 and Ne 40, and in different blend ratios. Yarn diameter, density, shape (roundness), unevenness, imperfection, hairiness, and yarn tensile tests were applied to the obtained yarns. The findings obtained by experimental and statistical study show that rPET fiber has usually negative effects on the yarn properties in especially fine yarns due to physical and chemical deterioration caused by contaminants of during re-processing of recycle polyester fiber. Based on the findings it is revealed that the values of unevenness, imperfection, and density increase whereas the values of diameter, hairiness, and tensile decrease from coarse yarns to fine yarns. As a conclusion it is possible to say that rPET fiber is suitable for thick yarns which are especially Ne 10 and Ne 20 as pure and in all blend ratios, and rPET fiber is suitable if it is used in lower ratios than 65% for Ne 30 yarns, whereas it is suitable if it is used in lower ratios than 35% for Ne 40 yarns.     

纳米抗菌涤/棉针织产品开发与性能研究

选用纳米抗菌涤/棉混纺纱,开发了3种纬编针织面料及其针织内衣产品。测试了纳米抗菌涤/棉混纺纱的性能,制定了纬编织造工艺和染色后整理工艺,测试了所开发面料的服用性能和抗菌性能。研发结果表明:纳米抗菌涤/棉混纺纱具有良好的服用舒适性和抗菌功能,适于开发针织内衣产品。     

细旦涤纶与毛混纺纱线及织物的性能

细旦涤纶兼具微细纤维及涤纶纤维的优缺点,文中从细旦涤纶与毛混纺纱线的结构着手,详细分析了毛／涤纱线的结构性能及其强物的性能。细旦涤纶优先分布在混纺线的里层。随着涤纶细度的降低,纱线条干均匀度提高,强力不匀率下降,纤维强力利用系数和纱线强力得到提高;其混纺织物的断裂强力,拉伸弹性,悬垂性,柔软性和吸湿透气性能得到提高。回弹性,折皱恢复性,抗起毛起球和耐磨性能下降。     

两种喷气涡流纺黏胶纱及其针织物的性能对比

测试分析了黏胶纯纺与黏胶/涤纶混纺的喷气涡流纺针织纱线的性能,比较了两种纱线编织的双罗纹针织物的力学性能、KES风格性能、服用性能和染色牢度。试验结果显示:纯黏胶喷气涡流纺针织纱毛羽较少,两种纱线的拉伸性能相似;纯黏胶喷气涡流纺纱双罗纹针织物的抗起毛起球性能优良,织物较硬挺,而黏胶/涤纶(65/35)混纺喷气涡流纺纱双罗纹针织物柔软性好,尺寸稳定性佳,表面更为光滑平整,且两种织物的染色牢度都好。