测试参数对热致变色纤维织物变色效果的影响

针对热致变色纤维织物变色效果的影响因素,选用棉纱为经纱,热致变色粘胶长丝纱为纬纱,设计织造了3种不同纬密的机织物,对其变色前后的颜色空间(L*、a*、b*)进行测试,并分析加热时间、测试温度以及测试方向等参数对热致变色纤维织物变色效果的影响。结果表明:加热时间对织物的明度及色相影响不显著;测试温度对明度及色相有显著影响。随测试温度升高,织物明度提高,偏红程度减弱;织物沿经向、纬向的明度高,偏红程度低,测试方向对织物明度和色相有显著影响。研究结果对热致变色纤维在织物中的应用及变色效果的测试具有一定的参考价值。     

织物结构对热致变色涤纶机织物变色效果的影响

用涤纶热致变色长丝(玫红变白色)作为经纱和纬纱,设计织造了平纹、斜纹和缎纹3种组织、不同密度的9种机织物,分别对其变色后的色彩明暗度L~*、红绿色调指数a~*和黄蓝色调指数b~*进行测试,分析了织物组织和纬密对热致变色涤纶长丝机织物变色效果的影响及其显著性。研究结果表明:纬密和织物组织对热致变色涤纶长丝机织物的变色效果有一定影响,但并不显著;随着织物纬密减小,明度略有升高,色相略有减弱;颜色变化由快到慢的顺序基本为缎纹、斜纹、平纹。研究结果对热致变色纤维在机织产品上的设计和应用具有一定的指导作用。     

织物结构对纺液着色涤纶长丝织物颜色的影响

对纺液着色涤纶长丝织物在不同织物组织及不同上机纬密时的颜色变化规律进行了测试和分析.结果表明：不同的织物组织和不同的上机纬密,着色涤纶长丝织物的色相不变,但其明度L和饱和度C均有不同程度的改变,且随着上机纬密的增加,着色涤纶加弹长丝织物的明度L和饱和度C均呈下降趋势,其变化关系表现为负指数关系.     

交织方式对光致变色织物变色效果的影响

探讨交织方式对光致变色织物变色效果的影响。以变色粘胶长丝及普通粘胶长丝为纬纱,织造了3种纬纱配比的平纹织物,测试了织物变色前后的有关颜色指标,包括三刺激值、颜色空间、彩度、光泽度、K/S值、光谱反射率等;通过一元方差分析了各项指标与织物变色效果之间的显著性。结果表明:不同的纬纱交织方式对织物色相、明度、彩度影响十分显著,对光泽度和K/S值影响不显著。认为:通过合理设定纬纱配比,可以设计出不同的光致变色织物。     

织物结构对色纺纱针织物呈色效果的影响

为了更好地把握生产过程中色纺纱针织物颜色的精确性,探究色纺纱针织物呈色效果的影响因素。首先织造不同弯纱深度、不同织物组织的色纺纱针织物,色纺纱颜色配置红蓝、红黄、黄蓝、黑白4种,然后使用Datacolor SF600测色仪测试织物不同层数时的颜色,并从明度、饱和度、色相3方面进行分析,探究弯纱深度、织物组织、织物层数对色纺纱针织物颜色的影响。结果表明,织物层数、织物组织、弯纱深度对色纺纱针织物的明度值均有影响,但对色纺纱针织物的饱和度和色相几乎无影响。     

改性氨基有机硅柔软剂对苎麻,亚麻织物白度及颜色特征的影响

本文报道了经ＳＪ系列氨基有机硅柔软剂整理的漂白，染色苎麻，麻织物的颜色特性参数变化的测试分析情况。结果表明：氨基有机硅柔软剂对大多数染色麻织物具有增深作用。特别深色品种，增深作用显著，此外，对白度，明度，彩度，色相，色差均有不同程度的影响，其影响程度与氨基有机硅种类，用量及焙固温度有关。     

姜黄染色织物的pH值敏感变色性能

为开发pH值敏感变色织物,研究了pH值对姜黄染色织物颜色变化的影响,利用高效液相色谱法对姜黄提取物主要成分进行分析,测试了不同pH 值条件下姜黄提取液的吸收光谱、姜黄染色织物的上染率、K/S值和染色牢度,利用颜色特征值对姜黄染色织物在不同pH值下的变色情况进行表征。结果表明：植物染料姜黄的主要成分为姜黄素,姜黄素分子在碱性条件下会电离成阴离子,引起颜色变化;随溶液ｐＨ 值的增加,姜黄提取液的吸收峰会产生红移,且吸收强度增加,提取液在酸性条件时呈黄色,当提取液pH 值大于8 时,溶液呈红棕色;姜黄对丝织物的染色性能好于棉织物。在pH值由中性向碱性转变时,姜黄染色织物会产生显著的变色,染色织物色相值变小,颜色由黄色域向红色域转变。     

基于CIECAM02颜色空间均匀性的研究

颜色空间的均匀性是评价一个颜色空间质量好坏的一个重要方面,其均匀的程度对色差计算和色域映射的准确性有重要的影响。首先介绍CIECAM02,然后利用孟塞尔新标数据,分别从明度、彩度和色相三个方面评价CIECAM02-Jab的均匀性,评价的结果表明明度的均匀性较好,而彩度和色相的均匀性要相对差一些,需要做进一步的改进。     

基于四基色的全色域混色模型构建及彩色纱纺制

为了解决色纺纱产品研发与生产中的颜色模型构建等关键共性技术，基于四基色纤维以12.5%的离散梯度网格化混配构建全色域混色模型；结合构建的全色域混色模型和三通道数控纺纱技术，阐述了“多通道牵伸比-色纤维混合比-成型纱线颜色值”的三要素调控机理，提出了调控成形纱线色相、明度及彩度的工艺方法，设计了纺制全色域混色纱的工艺；利用三通道数码纺纱机纺制了等明度不同色相、等色相不同明度、等色相不同彩度的三个系列的彩色纱，并对纱线的条干、毛羽及力学性能进行了测试，将测试数据与本色纱性能指标进行对比分析。结果表明：文章提出的基于全色域混色色谱纺制全色域彩色纱线的工艺具有可行性，纺制的彩色纱各项性能指标均可达到本色纱的一等品要求。     

染色二相不平衡对涤／棉染色布色彩效果的影响

染色布的色彩是人们对颜色的心理感觉,而影响视觉的明度,彩度,色相三特性之一发生微小变化,均会使人对织物彩度（或明度）产生不同的感觉,有的涤／棉染色布染色后,其外观（包括色差）虽然符合标准要求,但因染色时二相不平衡（即涤纶纤维与棉纤维上色不一致）影响其明度或彩度,使该染色布在视觉上显得陈旧,灰暗（或不鲜艳）,达不到所期望的色彩视觉效果。     

影响网格状稀疏织物结构稳定性的因素分析

探讨影响网格状稀疏织物结构稳定性的因素。通过测试不同组织、不同纱线号数和不同经纬密的多种机织网格状稀疏织物的滑移阻力,并反复对比分析了组织、纱线号数、摩擦因数和经纬密对网格状稀疏织物滑移阻力的影响。结果表明:平纹组织织物的滑移阻力明显大于方平组织织物;在一定范围内,织物的滑移阻力随纱线号数和摩擦因数的增大而增大,随经纬密度的增大而增大。认为网格状稀疏织物的滑移阻力测试分析结果为建立织物滑移阻力预测模型提供了依据。     

Surface roughness properties of wool woven fabrics after abrasion

Effects of abrasion on surface roughness properties together with appearance of woven wool fabrics have been investigated. The effects of weft yarn count, weft yarn density, and weave pattern on fabric surface roughness after abrasion were researched. Surface roughness values of control fabric (not abraded) and abraded fabrics after four different abrasion cycles were discussed according to different fabric constructional parameters. It was observed that the greatest decreases in surface roughness values after abrasion were observed in loose fabric structures which had the highest initial fabric surface roughness values (coarse yarn, low yarn density, and low yarn intersection). The results showed that change of roughness properties of wool fabric surfaces after abrasion depends on the initial surface roughness values and on the amount of contact area of fabrics based on the fabric constructional parameters.     

Surface roughness properties of polyester woven fabrics after abrasion

Effect of abrasion on surface roughness properties of textured polyester woven fabrics has been investigated. The effects of weft density, weft yarn filament number, fiber fineness, and weave pattern on surface roughness after abrasion were studied. Surface roughness values of control fabric (not abraded) and abraded fabrics after four different abrasion cycles were discussed according to different constructional parameters. Surface roughness values of fabrics changed according to abrasion cycles and the changes were related to yarn float lengths, yarn densities, yarn fiber fineness, and initial fabric surface roughness. A general overview of the results showed that abrasion eliminated the effect of texture especially at the fabric samples with initially high surface roughness. The surface roughness of fabrics with initially high surface roughness decreased at a greater extent than the ones with low surface roughness after abrasion. Fabrics with high surface roughness were affected more by abrasion and the effect of abrasion on rough surfaces depended on different manners regarding the compactness of woven structures.     

Effect of structural parameters of porous yarns and fabric on air permeability and moisture transfer of double-face woven fabrics

In this study, effect of fabric structural parameters of double-face woven fabrics including kind of porous yarn namely micro-porous yarn and hollow yarn, hole size of hollow yarn, percentage of these yarns in double-face woven fabric structure, and finally weft density on air permeability and moisture transfer of woven fabrics was evaluated. These yarns were produced by using water-soluble continuous polyvinyl alcohol filaments as core part for hollow yarns and as doubling yarn in micro-porous yarn. Results revealed the effect of kind of porous yarn, hole size of hollow yarn, and weft density on air permeability and moisture transfer of woven fabrics. The percentage of porous yarns as weft did not show obvious trend. Analysis of variance was used to study the effect of these variables on air permeability and moisture transfer of double-face woven fabrics statistically.     

防紫外毛涤混纺织物的开发及其性能研究

采用原料创新将抗紫外线涤纶纤维与防缩羊毛混纺,选用不同的混纺比,设计纺纱工艺流程及主要技术参数,选用相同的纱支、不同的经纬密度及织物组织上机织造,得到了不同规格的轻薄面料.测试和分析了不同规格抗紫外线毛涤织物的紫外线防护效果,并对各类织物的热湿舒适性能进行了测试与评价.结果证明,所设计并试织的系列织物具有较好的防紫外线性能和热湿舒适性能;在保证紫外线防护系数符合要求的情况下,织物的紧度不宜过大,以使夏季织物具有较好的热湿舒适性能.     

基于后梁高度差异的机织物纬纱行为研究

为使机织物中纬纱形成特殊的屈曲形态的外观效应,采用经纱在织机后梁上分区段扦插抬杆的办法,研究经纱差异张力下的织物纬纱行为特征。试样选用250 dtex×2涤纶/羊毛55/45混纺纱作经纬纱线,配置平纹组织,经向密度为200根/(10 cm)。设置不同抬杆扦插高度H值、扦插宽度K值和织物纬密P_w值,测试示踪纬的波动幅度M值。试验结果表明:H值在2.5 cm及以下,试验具有可行性;H值增大、K值减小,M值增大;当P_w值增大到300根/(10 cm)时,M值的增大趋势明显减弱;纬纱的屈曲形态与程度在织物试织过程中始终维持,并在织物下机后基本保持原状。     

纯棉织物折皱回复角与其组织结构参数的关系

为从织物自身组织结构方面优化纯棉织物的折皱性,首先设计织物组织结构参数并制备织物,利用数字式织物折皱弹性仪测得织物的折皱回复角。在此基础上,建立纯棉织物经、纬向和总折皱回复角与织物组织结构参数(包括经纬纱线密度、经纬纱捻度、经纬向密度)之间的线性回归方程;同时分析织物折皱回复角与各组织结构参数间的相关性。结果表明:回归方程的计算值与折皱回复角实测值绝对误差不超过0.61°,回归方程具有较高的实用性;经纬纱捻度、线密度对纯棉织物的折皱回复性影响最大,可通过提高经纬纱捻度、降低经纬纱线密度来改善纯棉织物的抗皱性。     

The effect of yarn twist direction on the formability of woven fabrics

This experimental work examines the influence of the yarn twist on the formability of a woven fabric. Consideration is given to the phenomenon of bedding between warp and weft yarns, as affected by the local helix angles of bent yarns. A total of 28 plain weave woven fabrics (four groups, each with seven samples) were produced, using Solospun? yarns as warp and weft threads. The fabric bending length and the initial modulus of each sample were measured from which the formability was calculated. Results indicated that the fabrics in which the warp and weft twists are unidirectional (Z &; Z) have higher formability in comparison to those fabrics in which the warp and weft twists are opposite to each other (Z &; S). In addition, among the former fabrics the highest formability belongs to those in which the total helix angle of the warp and weft is close to 90 degree whereas the lowest formability belongs to the latter fabrics with least amount of twist.     

组织结构对UHMWPE短纤纱织物防刺性能的影响

UHMWPE短纤纱具有优秀的抗切割性与较好的树脂浸润性,非常适用于制作防刺材料。文章试织了12种不同织物规格的试样,进行准静态穿刺实验,探究5种因素(组织、紧度、纱线线密度、经纬密和面密度)对织物防刺性能的影响,并比较不同穿刺角度下织物防刺性能的差异。结果表明:与方平织物与接结双层织物相比,平纹织物的防刺性能最好;同种经纬密或同紧度下,粗特纱织制的平纹织物防刺性能好;随着经密增加,紧度增加,面密度增加,防刺性能逐渐增加,但织物过于紧密时,防刺性能反而降低;平纹织物的穿刺性能具有各向异性,经纬向的防刺性能优于45°方向。     

镀银纤维功能性织物的性能分析与优化设计

探究镀银纤维试制功能性纺织品的设计要点.选择锦纶基镀银纤维、棉纤维、涤纶纤维、锦纶纤维等多种材料,通过对经纬纱线的线密度、捻度、捻向、纤维成分、颜色及织物经纬密度、组织等进行系统设计,试制出了10种织物,并测试了这10种织物的防静电、导电、电磁屏蔽和防紫外线性能.测试结果表明,所试制的织物均具有良好的防静电性、导电性和电磁屏蔽性.指出,锦纶基镀银纤维织物的防静电、防紫外线、电磁屏蔽性能优良;对于防紫外线、电磁屏蔽性能而言,股线织物优于单纱织物,轻薄型织物优于中厚型织物,深色织物优于浅色织物.