Prototyping and analyzing physical properties of Weft knitted spacer fabrics as a substitute for wound dressings

In this research, the required physical properties of weft knitted spacer fabrics, as an alternative for wound dressings have been investigated. For this purpose, weft knitted spacer fabrics with five different fabric structures have been produced on the electronic flat knitting machine. Moreover, in order to compare the properties of the produced fabrics with available wound dressings in the market, two kinds of wound dressing have been prepared from the market. Then, the physical properties of the spacer fabrics and the wound dressings such as air permeability, water vapor permeability, thermal conductivity, compressibility and absorbency have been measured and compared. The results show that in weft knitted spacer fabrics with the same fabric structure of the outer layer and different inclination angle (the angle formed between the outer layer and the spacer yarn), by decreasing the inclination angle, the fabric air permeability, water vapor permeability and absorbency decrease and the thermal conductivity and compressibility increase. Moreover, the use of tuck stitches in the outer layer of the spacer fabric leads to an increase of air permeability, water vapor permeability, absorbency and thermal conductivity and decrease of compressibility. The wound dressings also exhibit less air permeability and compressibility than weft knitted spacer fabrics. On the other hand, they possess higher water vapor permeability and absorbency. According to the results, among the examined weft knitted spacer fabrics in this research, the fabric with the tuck stitches in the outer layer is specified as the most appropriate alternative for wound dressing, in case of wounds with low exudates.     

羊毛与37.5涤纶混纺针织物的热湿舒适性研究

选择8种不同的羊毛与普通涤纶、37.5涤纶混纺针织物试样,测试试样的密度、面密度、未充满系数和厚度等基本参数,以及回潮率、透气率、芯吸高度、瞬间接触凉感(Q-max)及恒定加热条件下的干、湿态升温性能等织物的热湿舒适性能,分析和评价了针织物的基本参数对其热湿舒适性能的影响。试验结果显示,与普通涤纶相比,采用37.5涤纶有助于提高织物的回潮率、芯吸高度和Q-max;透气率随针织物未充满系数的增大而增大;当织物的纤维组成成分基本一致,组织结构相同时,针织物的面密度越大,透气性越差;含37.5涤纶的纬平针织物的瞬间接触凉感性能较好。     

针织长毛绒空气过滤材料过滤性能的研究

针对纺织车间粉尘的特点,参照国家标准GB 12218—1989和欧洲标准EN779:2002,建立过滤材料过滤性能测试装置,对针织长毛绒空气过滤材料以及针刺和熔喷非织造空气过滤材料的过滤性能进行了测试与分析。研究表明:针织长毛绒空气过滤材料更适用于纺织车间的除尘和回风过滤,其绒毛平均长度和直径对过滤性能的影响显著,而基布横密对过滤性能的影响不大。     

微波处理对丝针织物抗起毛起球性能的影响

抗起毛起球是丝针织物重要的服用性能之一,寻找物理方法来改善丝针织物的起毛起球性能,仍然是一个巨大的挑战。采用微波技术对丝针织物进行了处理,通过扫描电子显微镜、傅里叶红外、X射线衍射仪对丝针织物的形貌结构进行多维度分析的基础上,探讨了微波处理对丝针织物力学性能、透湿透气性能、抗起毛起球性能的影响。结果表明,短时间微波处理有利于丝针织物结构的调整,织物结晶度、顶破强力以及耐磨性小幅提高,织物的透湿、透气性也增加;较长时间微波处理,丝针织物力学性能及透湿、透气性降低,利用合适的微波处理工艺,在织物其他服用性能基本不变或有所改善的前提下,可以改善丝针织物的抗起毛起球性能。     

基于分形噪声和几何着色器的经编毛绒织物仿真

为提高经编毛绒织物仿真效果的真实性,解决仿真过程中因毛绒方向完全一致而过分呆板或完全随机而效果杂乱的问题,采用分形噪声方法计算毛绒织物中毛绒方向的随机性,将生成的分形噪声作为纹理送入图形处理器（GPU）中进一步调整毛绒方向。采用1组沿毛绒切线方向分布的切片来表示1根毛绒,根据毛绒切线方向和观察视线方向的关系,定义了2种切片以保证在任意视线角度下都能生成连续的毛绒效果。利用GPU的几何着色器实现了三维毛绒的模拟,通过与实际织物的对比实验,证明了该方法能在保证仿真速度的同时可实现具有自然纹理感的经编毛绒织物仿真。     

生物质石墨烯黏胶纤维针织物的性能

对生物质石墨烯黏胶纤维针织物的保暖、透气、透湿、抗静电和防紫外性能进行测试,并与普通黏胶针织物、棉针织物进行对比分析,得出结论:织物的密度、厚度、面密度与织物组织是影响织物保温、透气和透湿性能的主要因素,加入少量石墨烯的黏胶织物仍表现出较好的保暖性;加入石墨烯后对织物透气性没有显著影响;石墨烯黏胶织物与普通黏胶织物的透湿性均较好;添加石墨烯可以明显提高黏胶纤维的抗静电和防紫外性能。     

基于仿生学的冬季针织运动面料开发与性能评价

为开发出热湿性能优良的冬季针织运动面料,基于SolidWorks软件对3类蝴蝶鳞片进行几何结构三维建模,根据模型特征采用双股70 dtex(72 f)Dryarn^®聚丙烯纱线作面纱,50 dtex Dryarn^®聚丙烯纱线包覆17 dtex氨纶作地纱,以及150 dtex涤纶作面纱,30 dtex涤纶包覆20 dtex氨纶作地纱,在SANTONI MF8-CHN单面电子提花圆机上开发了6种仿蝴蝶鳞片结构针织面料;通过对仿生结构针织面料的保暖性、透湿性、透气性及液态水分管理能力进行测试分析,进而运用模糊数学对织物的热湿舒适性能进行综合评价。结果表面:以Dryarn^®聚丙烯纱线为原料织造的蝶翅结构仿生织物不仅热湿舒适性能良好,且织造工艺简洁高效,拓宽了从织物组织结构设计方面开发功能纺织品的思路。     

Permeability properties of single jersey fabrics made of hollow yarns

In this work effect of using hollow yarns on the permeability properties of the single jersey knitted fabrics were studied. Firstly yarns were produced by ring spinning machine using cotton, viscose and acrylic fibres in the mantle and water soluble polyvinyl alcohol (PVA) fibre in the core. Single jersey fabrics were knitted and PVA core was removed subsequently by washing process to create hollow yarn. Weight, air permeability and water transmission rate properties of fabrics were measured before and after washing and compared with reference fabrics. Due to the removal of PVA fibres from the yarn core after washing treatment, air permeability and water vapour transmission rate of the all kind of single jersey fabrics which were produced with hollow yarns increased as well as weight of the fabrics decreased which will cause more comfort during any exercise. It was also found that mantle fibre type and PVA ratio have significant effect on the fabric properties.     

锗纤维针织面料的服用性能及综合评价

采用锗纤维纱线编织纬平针、1+1罗纹、单鱼鳞、罗纹半空气层、罗纹空气层5种组织结构的针织物,分别测试它们的保温性、透湿性、透气性、顶破强力、远红外发射等服用性能。应用模糊数学评判法对测试结果进行综合评价,结果表明,纬平针组织针织物的服用性能最好,接着依次为1+1罗纹、单鱼鳞和罗纹空气层组织针织物,而罗纹半空气层组织针织物的服用性能最差。与纯棉、棉/黏胶混纺面料相比较,锗纤维针织面料还能够释放远红外线,具有一定的功能保健性。     

聚乙烯针织物的热湿舒适性能

为研究织物结构参数对聚乙烯针织物热湿舒适性能的影响,选取3种规格的聚乙烯长丝织成双罗纹针织物,并选用涤纶、凉感涤纶长丝制备相同结构双罗纹织物作为对比试样,研究构成织物的原料种类、未充满系数、捻度对织物孔隙率、透气性、导热及导湿性能的影响。结果表明:在织物结构相同的情况下,构成织物的原料、未充满系数与织物透气、导湿、导热等热湿舒适性能显著相关;纱线捻度与织物的导热及导湿性能显著相关;与涤纶、凉感涤纶织物相比,聚乙烯长丝表面存在沟壑,结晶度、取向度较高,其织物具有优良的透气、导湿和导热性能,是制备凉爽舒适功能纺织品良好原材料。     

羊毛混纺户外运动服用针织面料开发与性能评价

为满足人们对春秋季户外休闲运动服装的需求,采用藏青羊毛纱、白色羊毛纱、涤纶丝以及锦纶丝为原料,在双面电脑提花机上开发4款羊毛针织面料,并选择2款规格相近的高密度面料作为对比样。对6种面料的耐磨性、顶破强力、抗起毛起球性、透气量、悬垂系数、克罗值、液态水分管理能力进行测试分析,采用模糊综合评价方法对面料的服用舒适性能进行评价,最后选出服用性能最好的羊毛针织面料,为羊毛户外休闲运动针织面料的开发提供参考。     

A study on thermal properties of single-jersey knitted fabrics produced from ring and compact folded yarns

This paper presents a study on the thermal properties of single-jersey knitted fabrics manufactured using ring, compact and ring/compact folded yarns. The variations in thermal properties depending on the yarn twist and traveller weight of folded yarn single-jersey knits were discussed. It was found that the thermal resistance of knitted fabrics generally increases as the traveller weight decreases, and also water vapour permeability reduces as the traveller weight decreases. The water vapour permeability and air permeability of knitted fabrics increase as the twist increases. The thermal conductivity of knitted fabrics decreases as the twist increases. The air permeability and water vapour permeability values were higher for compact folded yarn fabrics as compared to those values of ring and ring/compact folded yarn fabrics. It is observed that yarn twist and traveller weight have affected different thermal properties of single-jersey folded yarn fabrics.     

Air permeability and bursting strength of weft-knitted fabrics from glass yarn. Part I: cam setting and number of yarn ply effect

This study revealed the effect of cam setting and number of yarn ply on air permeability and bursting strength of weft-knitted fabrics from glass yarn. Change in cam setting from loose to tight level increased fiber content, and stitch-density; while it decreased loop length. Fabrics with 3-ply yarn exhibited higher fiber content; lower stitch-density; and longer loop length than fabrics with 2-ply yarn. Cam setting showed more pronounced effect on physical properties of fabric than number of yarn ply. Fabrics knitted via tight cam setting level exhibited less air permeability, and higher bursting strength than fabrics knitted via loose cam setting. Fabrics from 3-ply yarn showed less air permeability and higher bursting strength than fabrics from 2-ply yarn. Loop length, wale density, and fiber content were determined as the most effective physical properties on permeability and bursting strength. A negative correlation was detected between air permeability and bursting strength.     

针织面料拉伸变形的透湿透气性能研究

选取织物透气率和透湿量两个指标,探讨了织物在不同拉伸状态下的透气和透湿性能,织物伸长对织物舒适性能的影响,确定了舒适性服装在穿着过程中的伸长范围。     

拉伸对Lucool涤纶/氨纶针织物透气和导湿性能的影响

在单面圆机上编织6种不同参数的Lucool涤纶/氨纶单面弹力针织物,并测试分析了拉伸状态下织物的透气性能和导湿性能,通过该方法得出弹力针织物的透气率、导湿性与拉伸率的关系曲线和数学关系式。     

Influence of graphene oxide concentration and dipping cycles on electrical conductivity of coated cotton textiles

The electrical conductivity of cotton fabrics is enhanced by coating with graphene in aqueous phase by a suitable process. Two different types of fabrics viz. woven and knitted structures of same GSM are used as substrate. The fabrics are dipped in dispersed graphene oxide (GO) solution and then GO-enriched fabric samples are subjected to a reduction process for in-situ conversion of the added GO to electro-conductive graphene. The concentration of GO solution and number of dipping cycles influence the graphene add-on and electrical resistivity of the fabrics. The change in surface resistivity, thickness, air permeability, porosity and water vapour permeability of the fabrics after the treatment has been evaluated. Comparisons have been made between the woven and knitted fabrics for all these properties to understand the effect of fabric structure.     

棉织物环保型氟整理工艺

采用不含PFOS和PFOA的环保型含氟整理剂对织物进行自清洁整理技术,比较了环保型含氟整理剂、纳米三防整理剂与普通三防整理剂处理织物的拒水耐洗性、拒油耐洗性和透气性.结果表明,经新型自清洁整理的面料具有良好的防水性、防油性和透气性,耐50次水洗,且服用性能优异.     

3D打印纬平针面料的制备

为研究3D打印服装面料中纬平针组织的结构,预测打印效果,促进针织面料数字化和智能化生产,将3D打印技术应用到针织面料设计和生产中。采用3ds Max软件,根据NURBS曲线建模的方法,结合Peirce线圈模型对纬平针组织进行三维模拟,通过模拟实现了3D打印纬平针面料的可视化,可预测打印效果。采用Repetier-Host软件,对模拟的3D打印纬平针组织模型切片,采用熔融层积成型技术,通过设置打印参数对模型切片数据进行打印,得到3D打印纬平针组织针织面料。结果表明：该打印面料的效果与模拟效果高度吻合,线圈之间嵌套关系明显,打印面料光滑平整,打印精度高,属于环境友好型面料。     

竹浆/棉混纺纱针织物的服用性能

以竹浆/棉混纺纱为研究对象,经圆纬机织造和后整理工艺制备出纬平针和双罗纹针织物,测试分析了织物的透气性、透湿性、芯吸性、吸湿快干性、悬垂性、刚柔性和表面摩擦性等服用性能。测试结果显示,竹浆/棉混纺纱针织产品具有良好的春夏季服用舒适性能。     

仿生鸟羽结构针织面料开发与性能评价

为缩短国内滑雪服研发技术与国外品牌的差距,探讨仿生鸟羽结构对针织织物热湿性能的影响,以便更好地提升国内滑雪保暖裤的穿着舒适性.首先,通过融合仿生学和提花设计手法改变织针成圈方式,根据羽毛微观结构特征开发了8种不同组织结构的仿生针织运动面料;然后,在热阻、保温率、透湿率、透气率和经纬向芯吸高度等单一指标对比的基础上,建立...