Investigation of thermal comfort properties of zinc oxide coated woven cotton fabric

In this paper, we investigated thermal comfort properties of twill weave cotton woven fabric coated zinc oxide layer in Roaches high temperature sample dyeing machine in gentle conditions. The effect of coated film structure on thermal comfort properties of the fabric was characterized using SEM observation, EDS analysis, and Permetest instruments. EDS analysis and SEM images of the ZnO coated twill weave cotton fabric proved that ZnO coating layer which has significant effects on thermal comfort properties was successfully synthesized on the fabric surface by covering the pores of the twill weave cotton fabric. Results showed that thermal resistance of ZnO coated fabric increased approx. 36–52%, while thermal conductivity is decreased approx. 27–34% and WVP is decreased approx. 22–28%. Further studies have started and in progress to evaluate wash fastness, wear performance, abrasion properties, and fabric handle properties.     

Effect of woven fabric structure on the air permeability and moisture management properties

In this study, six different woven samples were produced on air jet loom with two different weave designs (i.e. 3/1 twill and 1/1 plain), three different picking sequences (i.e. single pick insertion (SPI), double pick insertion (DPI) and three pick insertion (3PI)). All the woven samples were singed, desized, bleached and finished together at industrial scale, as a single lot. The effect of these factors on the wetting, wicking and air permeability (AP) of the fabric samples was analysed. It was revealed that the fabric weave design and picking sequence has statistically significant effect on fabric wetting time, water spreading speed and AP of the fabric. It was found that fabrics woven in twill weave design and with simultaneous 3PI give significantly better AP, shorter wetting time and better water spreading rate as compared to plain woven fabrics and those with double or SPI. It could be concluded that the thermophysiological comfort of woven fabrics may be significantly improved simply by selecting a suitable weave design and picking sequence.     

Study on effect of blend ratio on thermal comfort properties of cotton/nylon-blended fabrics with high-performance Kermel fibre

This study presents the thermal comfort properties of woven fabrics made of Kermel, cotton/nylon and cotton/nylon /Kermel-blended yarns. Our aim in this study is to combine the high comfort properties of cotton/nylon fibres with high thermal protective properties of Kermel fibre in different woven fabrics. Thus, Kermel (100%), cotton/nylon (50:50) and four blends of the 50% cotton fibres with nylon and Kermel (40:10, 30:20, 20:30 and 10:40) were spun on a ring-spinning frame and twisted into two-folded yarns with the same yarn count of 30/2(Ne) and twist level of 560 TPM. Using the produced yarns, woven fabrics with identical characteristic and structure were also produced. Then, the thermal comfort and physical properties of fabrics were studied in terms of fabric porosity, thermal resistance, thermal conductivity, water vapour resistance and air permeability. The results show that the porosity, air permeability and thermal resistance increase with Kermel fibre blend ratio. Conversely, the water vapour resistance decreases with increase of Kermel fibre blend ratio up to 40%, while 100% Kermel-woven fabric exhibits a higher water vapour resistance value. Nevertheless, the thermal conductivity of cotton/nylon-blended Kermel woven fabric is unchanged with increase of Kermel fibre blend ratio up to 40%, whereas at 100% Kermel fibre blend ratio, the lowest thermal conductivity is obtained. The obtained results implied that woven fabric produced from cotton/nylon (50/10) blended with 40% Kermel fibre resulted in proper thermal comfort properties.     

Modeling and optimizing the frictional behavior of woven fabrics in climatic conditions using response surface methodology

Frictional characteristics of woven fabrics can determine smoothness and softness values of textiles. In this paper, we have studied the influence of factors such as temperature, relative humidity, fabric structure, type of fiber material, and direction of motion on roughness properties of fabric surface using response surface method (RSM). For this purpose, woven fabrics with plain, rib2/2, twill2/2, twill1/3, twill3/1, twill1/7, and twill7/1 were produced with polyester warp yarn and two different weft yarns (cotton and polyester). Then, a statistical model (RSM) was used for the experimental plan (with these variables) to determine the runs of experiment (or selected points). Next, the frictional forces measurement was carried out on the fabrics in those directions. The experimental results showed that fabric-to-fabric friction (static frictional resistance, kinetic frictional resistance, and smoothness of woven fabrics) is highly sensitive to factors like relative humidity, fabric structure, type of fiber material, and direction of motion while temperature factor (in the range 0–50°C) has no sensitive effect on frictional parameters.     

织物组织结构对衬衫面料撕破强力的影响

探讨织物组织结构对衬衫面料撕破强力的影响.以纯棉、棉涤混纺、棉涤混纺加少量天丝为原料,织造不同组织结构的织物：平纹、斜纹及纵条纹组织,所有试样均采用同样的液氨免烫后整理工艺.采用冲击摆锤法测定织物的撕破强力,并且从紧度比对撕破强力、织物组织对纯棉试样撕破强力,以及原料对撕破强力的影响三个方面进行分析.结果表明,随着织物的经纬向紧度比增大,织物的纬向撕破强力呈递增趋势;对于常见规格的纯棉织物,平纹组织的经、纬向撕破强力均小于其他组织,尤其是纬向撕破强力较容易出现不合格情况,斜纹组织织物的撕破强力较高,纵条组织织物的撕破强力因组成条纹的各基本组织的配置不同而不同,其撕破强力一般介于平纹和斜纹组织织物之间;在棉涤混纺加入少量天丝时,平纹组织织物的撕破强力会明显提高.产品设计中合理设计织物结构,使经纬向紧度比增大,可以提高纬向的撕破强力.     

聚酯长丝/棉复合纱斜纹织物的保形性及服用性能

为研究聚酯(PET)长丝/棉复合纱斜纹织物的保形性及服用性能,利用PET长丝与纯棉纱开发了3种线密度为9.8 tex的纱线,并以二上二下斜纹组织织造了4种织物。对织物进行了折皱回复性、免烫性、尺寸稳定性、悬垂性等保形性能,强伸性、拉伸弹性、顶破性等抗变形性测试,以及手感风格、透湿性、透气性等服用性能测试。对比分析了纯棉纱织物与复合纱织物的保形性与服用性能。结果表明:PET长丝/棉复合纱可改善纯棉织物的折皱回复性、悬垂性,提高免烫等级,同时又不影响织物的服用性能;包芯纱织物比包缠纱织物有更好的保形性,更高的免烫等级,是免烫衬衫面料的理想选择。     

氨纶的性能及其机织物的染整加工

对氨纶纤维的弹性、强度、耐热性、染色性能和耐化学药品性进行了分析。分别阐述了氨纶全棉机织物（包括平纹纬弹织物、斜纹和缎纹纬弹织物和经纬双弹织物）、锦棉氨纶织物、涤棉弹力织物、氨纶合捻线机织物、纬弹灯芯绒织物等品种的染整加工工艺。对于不同的氨纶织物品种应采取不同的加工工艺，特别是全棉纬弹斜纹和缎纹织物，对坯布就要分析其组织结构，再研究具体的工艺条件。     

棉/不锈钢长丝机织物的电磁屏蔽及折皱回复性能

为研究组织结构与磨损对织物屏蔽性能的影响,以及不锈钢长丝对织物折皱回复性的影响,使用自制的棉/不锈钢长丝包芯纱织制了3种不同组织的机织物,测试了织物在0.3~1 500 MHz频段上的电磁屏蔽性能,并使用平磨仪对各织物分别摩擦60、120、180、240 及300次后,测试了织物磨损后的电磁屏蔽性能;同时,采用视频序列法测试了织物的动态折皱回复角。结果表明：织物组织结构对电磁屏蔽性能有一定影响,平纹组织结构紧密,屏蔽效果好;经过若干次磨损后,织物的电磁屏蔽性能先小幅升高后逐渐降低;相同磨损条件下,试样耐磨性越好,屏蔽效能的降低幅度越小;由于不锈钢长丝的加入使织物的折皱回复性降低,可以采用浮长更长的组织改善织物起皱现象。     

几种不同组织结构的衬衫面料保形性研究

根据常见的衬衫面料组织结构,使用JC9.7 tex纱线设计了6种不同组织结构的面料,研究不同组织结构对织物保形性的影响。对面料的保形性(尺寸稳定性、抗折皱性、外观平整度、抗起毛起球性、顶破性、悬垂性)及舒适性(透气、透湿性)进行了测试。结果表明:组织结构对织物的折皱回复角、外观平整度等级、顶破强力、透湿量与透气率有直接影响;织物紧度太大、太小都不利于织物的折皱回复,相同紧度下斜纹组织的抗皱性比平纹好;6种组织结构中2/2斜纹组织抗折皱性最好,2/2方平组织的顶破强力、抗起毛起球等级最高,2/2破斜纹透气、透湿性最好,2/2斜纹组织具有良好的保形性。     

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.     

Y形涤纶纤维机织物的开发与性能分析

为了研究Y形涤纶纤维机织物的性能,利用Y形涤纶纤维的纯纺纱以及与棉纤维的混纺纱线,设计开发了16种平纹和斜纹组织织物,对其吸湿排汗性能如吸湿性、透湿性、 吸水性及快干性进行了测试与分析。结果表明：较稀疏、轻薄的混纺织物比纯纺织物透湿性好;而较紧密、厚实的纯纺织物比混纺织物透湿性好；随着织物组织结构紧密度和厚度的增加,Y形涤纶纤维织物的干燥速度下降。     

An investigation of thermal comfort properties of Abaya woven fabrics

Abaya is a traditional Muslim woman’s outer garment. It is black in colour, and must be worn over the normal day-to-day clothing according to Islamic law. It is mandatory to wear Abaya in Arabian Gulf countries irrespective of the outside environmental temperature, which can be up to 50°C. Having many layers of clothing including Abaya makes it extremely uncomfortable for the wearer in a hot environment. Thermal comfort performance is, therefore, essential for fabrics used for Abaya. This study investigated some commercially available woven Abaya fabrics for thermal resistance, air permeability, thermal comfort, vapour resistance and fabric structural and surface properties. The results indicated that the Abaya fabrics with different weave structures, fibre composition and fabric weight have greater influence on the fabric thermal comfort performance.     

色织衬衫面料的设计与开发

结合流行趋势,采用涤纶纱为原料,利用平纹、斜纹、小提花等组织与色纱排列的搭配,设计了4种女士色织衬衣面料,并上机织造了4块面料;对设计的系列织物的透气性、耐磨性、抗皱性和起毛起球性进行了测试分析,对色织衬衣面料的开发具有一定的参考.     

间隔织物面层组织对其增强板材性能的影响

设计织造平纹、方平、2/2斜纹和1/3斜纹4种不同面层组织的间隔织物,并在间隔织物的空间结构中填充聚氨酯泡沫,再用环氧树脂对其表面进行复合,加工制成机织间隔织物复合材料板材.对加工出来的4种间隔织物的复合板材进行压缩和弯曲试验,探讨4种不同的面层组织对间隔织物复合材料板材性能的影响.     

聚苯硫醚织物的制备及热学性能研究

通过制备相同经纬密度不同织物组织的样布,对聚苯硫醚机织物的耐热性能、热稳定性能以及导热性能进行测试分析.根据实验数据可知,聚苯硫醚织物具有良好的耐热性能和热稳定性能,以及极佳的热防护性能;1/2斜纹相比于平纹和其他三种斜纹织物组织是更适合于防护服外层面料的组织.     

仿针织牛仔面料的开发及性能评价

为获得兼具针织和机织牛仔面料优点的新型牛仔面料,从纱线的选择、织造、后整理等方面探讨了仿针织牛仔面料的开发。对比测试了仿针织牛仔面料、针织牛仔面料、纯棉机织牛仔面料等5 种面料的拉伸断裂强力、撕破强力、色牢度等指标,并利用川端织物风格评价系统对牛仔面料的拉伸、剪切、弯曲、压缩、表面摩擦5 项指标进 行织物风格综合分析。结果表明,采用精梳纯棉纱作为经纱,涤纶长丝氨纶包芯纱作为纬纱,选择复合右斜纹组织,经特殊后整理工艺后生产的仿针织牛仔面料经向拉伸断裂强力高达685 N,撕破强力达59 N,粗犷挺括,柔软舒适,弹性和保型性俱佳,克服了针织牛仔面料和机织牛仔面料的风格缺陷。     

Investigation on permeability and moisture management properties of different denim fabrics after repeated laundering

The physiological comfort determined by air permeability and moisture management properties of fabrics is influenced by various constructional parameters of the fabric which give woven fabric a porous structure. Evaporation of sweat during wear has the potential to cool the body besides restricting the additional weight of sweat being absorbed by the fabric. In this study, comfort characteristics of denim fabrics with different weft yarn of cotton, polyester and core spun Lycra have been discussed. Effect of enzyme washing and repeated laundering on air permeability, moisture management and drying rate has also been discussed. It was observed that air permeability and water vapour permeability of unwashed denim fabrics with cotton weft yarn are significantly higher than the fabric with polyester and Lycra cotton weft yarns. The wetting time is higher for cotton and Lycra cotton yarn fabrics. One-way transport index is highest for Lycra cotton weft fabrics and lowest for fabrics with polyester weft. Fabrics with polyester weft yarns show highest spreading rate, spreading radius and drying rate due to better wicking and hydrophobic nature of polyester fibres.     

纯棉纱线合股数对织物性能的影响

为研究纯棉纱线合股数对织物力学性能和保形性的影响,采用线密度相同的单纱、双股线、3股线、4股线4种股线类型,以适当的经、纬密分别织制成平纹、斜纹、缎纹组织的织物。对织物的拉伸性能、撕裂强力、拉伸弹性、折皱回复性、悬垂性、弯曲性进行测试与分析。结果表明:3股线织物的断裂强力和撕裂强力较大,4股线织物的断裂伸长率较大,双股线织物的拉伸弹性回复率较大;平纹织物仅有双股线织物的折皱回复性优于单股线织物,斜纹和缎纹织物的折皱回复性随合股数的增加均变差;双股线平纹织物悬垂性相对较好,但均没有斜纹和缎纹织物的悬垂性好;单纱织物的弯曲性能比股线织物好。     

The research on jacquard weaving technology of self,adhesive Song brocade bag fabric北大核心CSCD

In order to make the Song brocade bag fabric have self, adhesive function, low, melting polyester fiber and silk were interwoven as raw materials. The Song brocade fabric with self, adhesive function was made through interweaving two groups of warp and four groups of weft. The wraps are divided into the ground warp and surface warp with a ratio of 3, 1. The weft arrangement ratio is A, B, C, D =1, 1, 1, 1, of which D weft is a low, melting polyester fiber. The surface layer of ground wrap is warp twill (R = 3), and the surface ground weave displays the color of ground warp. Three surface pattern weaves are weft twill (R =3) with the surface warp and A, B, C wefts woven, and they display the color of A, B, C weft respectively. D weft is backed on the reverse side of fabric, and it is the long floating line so that low, melting polyester fiber is backed on the reverse side of fabric. The Song brocade fabric was overlaid with the layer of lining fabric used to make bags keep certain shape. Meanwhile, they were heated by high temperature to make the two layers of fabrics bonded together. This process is not only more efficient in production, but also more environmentally friendly and safer, compared with the bonding process of common bags. © 2018 China Silk Association. All rights reserved.     

Multi-response optimization of mechanical and comfort properties of bi-stretch woven fabrics using grey relational analysis in Taguchi method

The present paper envisages the multi-response optimization of certain factors like elastane linear density, fabric thread density and weave float on some mechanical, (i.e. stretch %, recovery %) and comfort (i.e. air permeability) properties of bi-stretch woven fabrics, under L₁₈ orthogonal array in Taguchi design. Fabric samples were produced using elastane core-spun cotton yarns both in the warp and weft. The elastane linear density, fabric thread density and weave float size were used as predictor variables, while fabric air permeability, stretch and recovery were taken as response variables. Two different elastane linear densities, i.e. 44 dtex and 78 dtex, 3 different thread densities and 3 different weave designs, i.e. 1/1 plain, 2/2 z-twill and 3/3 z-twill were used. The results have been analysed using grey relational analysis for the identification of an optimum level of process factors. Furthermore, using analysis of variance method, significant contributions of predictor variables were determined.