聚乳酸纤维抗菌织物

选用14.6 tex的聚乳酸纱线作为原料,用ASS3000单纱机对纱线进行上浆,SV111型剑杆自动织样机织造聚乳酸纤维平纹织物,采用Na2CO3碱液退浆法对织物进行退浆,H2O2对织物进行漂白,经热定形处理后,使用SCJ-939固着剂和CYK-302无机载银抗菌剂对织物进行抗菌整理,开发出聚乳酸纤维抗菌织物。对抗菌整理前后的聚乳酸织物的服用性能和抗菌性能进行了测试分析,研究证明:开发的聚乳酸纤维抗菌织物具有良好的服用性能和抗菌性能。     

聚乳酸/废旧天丝织物复合材料

将聚乳酸与新、废旧天丝织物经熔融共混制备聚乳酸/天丝织物复合材料,研究复合材料的力学性能、结晶熔融行为和微观形貌.结果表明:天丝织物以单丝形貌分散在聚乳酸基体中,对聚乳酸有明显的增强效果;当织物含量较高时,拉伸强度提高1倍以上,冲击强度提高2倍以上,因废旧天丝织物的单丝表面粗糙,形成更好的界面粘结,使废旧织物的增强效果优于新织物的;天丝织物还可诱导聚乳酸在110～140℃冷结晶,为退火手段进一步提升力学和耐热性能提供可能.     

聚乳酸/丽赛/竹纤维混纺织物深色染色工艺研究

在聚乳酸纤维混纺织物的二浴法染色中,以表观色深K/S值作为衡量染色效果的依据,研究了第一浴染色工艺曲线、温度、pH值、时间对织物染色性能的影响;以染料的上染率K/S值为依据,研究了第二浴活性染料染色工艺曲线、温度、时间对织物染色性能的影响。提出了较佳的聚乳酸混纺织物深色染色配方及工艺流程。     

聚乳酸纤维的耐酸碱性

针对织物在加工、后处理以及服用过程中经常会遇到化学试剂作用的问题,研究了聚乳酸纤维在不同pH值、温度、时间等条件下的耐酸碱性。利用强力仪、扫描电镜(SEM)等测试仪器,测试分析了经酸碱液处理的聚乳酸纤维。结果表明:在影响聚乳酸纤维耐酸碱性的温度、时间和pH值三个因素中,pH值和温度起主要作用;热碱液对聚乳酸纤维强度影响很大,高温长时间的强酸性条件对纤维的损伤也较大;100℃、pH值为11、处理90 min时,纤维已失去纤维功能。从化学原理上分析了酸碱对聚乳酸纤维性能的影响,并从理论上解释了聚乳酸经酸碱水解的机制。     

氮化硼/碳纤维复合织物的性能研究

将氮化硼粉末负载于碳纤维织物上,用扫描电镜和紫外分光光度计观察和测试了氮化硼/碳纤维复合织物的表面形貌和紫外漫反射性能。结果显示:有大量氮化硼负载于碳纤维织物上;在250～600 nm波长范围,氮化硼/碳纤维复合织物的紫外漫反射性能比纯碳纤维织物的更好。用网络分析仪测试了氮化硼/碳纤维复合织物的电磁屏蔽性能,发现负载了氮化硼的碳纤维织物的电磁屏蔽性能略弱于纯碳纤维织物。     

大豆蛋白纤维／棉混纺织物透湿透气性能分析

为了研究大豆蛋白纤维／棉混纺织物的透湿、透气性能,对大豆蛋白纤维纯纺织物、大豆蛋白纤维／棉混纺织物的透气性、透湿性进行了对比测试与分析。结果表明：大豆蛋白纤维织物比棉织物具有更好的透湿性能,而透气性与纤维种类关系不大。     

天然纤维增强型聚乳酸复合材料的研究进展

针对现阶段天然纤维增强型聚乳酸复合材料的若干研究进展进行阐述,主要包括对于天然纤维的界面性能改进的不同方法介绍,及其作用机理分析;织物型纤维的二维结构化对于生物可降解性复合材料的力学性能的提高和其多维结构的发展;改性聚乳酸的研究,主要包括高韧性聚乳酸的制备、高渗透性聚乳酸和耐高温型聚乳酸;相客性优异地适用于聚乳酸的功能化添加剂;及其天然纤维增强型聚乳酸复合材料的成型制备工艺.     

纳米ZnO-PLLA/聚乳酸复合薄膜的性能研究

通过聚乳酸(PLLA)表面修饰的纳米氧化锌材料与聚乳酸(PLLA)共混制备出纳米聚乳酸复合膜,采用扫描电镜(SEM)、DSC对复合材料进行表征,并将该膜与单纯的聚乳酸材料制备的膜相比,进行抗菌性能测试。实验结果表明,添加氧化锌-聚乳酸(ZnO-PLLA)复合材料比纯PLLA有更好的热稳定性和更高的界面结合强度,结晶度由原来的42.2%增加到47.1%,提高了PLLA的结晶速率,并且复合材料具有较好的抑菌效果。     

PB/TAED对织物氧漂洗涤的损伤研究

采用含有PB/TAED活化氧漂体系的洗衣粉对活性染料上染的棉织物进行洗涤.设计正交实验,在不同染料、洗涤剂、温度等条件下测试织物洗后的拉伸断裂强力、K/S值、色差,得出各因素对织物性能的影响.为更好地进行织物护理提供依据.     

聚乳酸短纤维拉伸、卷曲工艺研究

研究了油浴温度及拉伸倍数对聚乳酸纤维的断裂强度、伸长、模量、结晶度和晶区取向的影响,还研究了卷曲工艺对聚乳酸纤维卷曲性能的影响。结果表明:与提高卷曲板压力相比,适当提高卷曲温度对改善聚乳酸短纤维卷曲性能效果更好。     

结构参数对尼丝纺织物性能的影响

探讨了织物组织、纱线细度、织物紧度对尼丝纺织物的透湿性、抗紫外线性和折皱回复性的影响。结果表明,缎纹组织的尼丝纺织物的透气性、抗紫外线性和折皱回复性好于斜纹和平纹组织的织物;随着纱线细度的增大,尼丝纺织物的抗紫外线性和折皱回复性越好,透湿性越差;随着织物紧度的增加,尼丝纺织物的透湿性先变好后变差,抗紫外线性变好,折皱回复性变差。     

A novel durable hydrophobic surface coating of poly(lactic acid) fabric by pulsed plasma polymerization

Effective finishing on poly(lactic acid) (PLA) fibres could be difficult due to its low melting point. Traditional fluorocarbon application technology (pad, dry, and cure at high temperature) on poly(ethylene terephthalate) and PLA fibres fabrics was compared with a novel plasma polymerization technique which was performed on both fabrics. Liquid repellency properties of both mentioned fabrics, before and after washing were evaluated. Fabric mechanical properties were compared by measuring bursting strength and fabric hand. The results indicate that, in general, the plasma process imparted better fabric handle and overall repellency, particularly with regard to low temperature re-orientation. Furthermore, by adding a proper softener, the inter-fibre friction was reduced and better elastic recovery was achieved.     

XLA包芯纱-棉交织物试织研究

以XLA-棉包芯纱为经纱、纯棉纱为纬纱,在Y002S型小样织机上试织了4种XLA包芯纱-棉交织物,并测试了织物的断裂强力、断裂伸长率、耐磨性和褶皱回复性。测试结果表明:相同经纱密度下,斜纹组织织物的断裂强力和断裂伸长率大于平纹组织的;经纱密度越大,织物的耐磨性和褶皱回复性越好。     

新型假捻变形纱针织物的仿棉性能评价

就新型假捻变形纱针织物的光泽、基本力学性能、悬垂性和热湿舒适性进行了较为全面的研究,并通过与棉织物进行对比分析,对新型假捻变形纱织物的仿棉效果作出了评价.试验结果表明:新型假捻变形纱织物与棉织物相比,正反射光强和漫反射光强较大,对比光泽度较大,具有较高的光泽度值;从基本力学性能测试结果上看,新型假捻变形纱织物的弯曲刚度、弯曲滞后量、剪切刚度、剪切滞后量、压缩比功小于棉织物,而其压缩功回复率大于棉织物,说明新型假捻变形纱织物的柔软性、成形性和弹性回复能力较棉织物好,但蓬松性不及棉织物;新型假捻变形纱织物的保暖性和透湿性能低于棉织物,透气导湿性能好于棉织物,两种织物的接触冷暖感相近.     

天然抗菌植物靛蓝在牛仔纱线染色中的应用

对植物靛蓝连续染色牛仔纱线进行了实验研究.染色纱线织成的面料耐水洗色牢度、耐汗渍色牢度、耐干摩擦色牢度及耐唾液色牢度都在4级及以上,该面料及其经多种洗水风格处理后的服装对金黄色葡萄球菌的抑菌率在80％以上,对大肠杆菌的抑菌率在78％以上,具有很好的抗菌性能.     

双层亚麻-涤纶交织汽车座套面料的开发

基于汽车座套面料的要求,利用涤纶长丝和亚麻纱交织的方式设计了7种不同产品,并对亚麻-涤纶交织的汽车座套面料性能进行分析和评价,最终得到影响汽车用纺织品舒适性和耐用性的主要因素。结果表明:表层亚麻、里层涤纶双层交织的斜纹织物透气性、悬垂性、耐磨性、起毛起球性、抗皱性和拉伸性能等综合性能较好,是一种理想的汽车座套面料。     

Color pattern recognition for yarn‐dyed fabrics

In the process of designing and analyzing the yarn‐dyed fabric, the yarn color pattern has an important effect on the appearance of the fabric. An automatic color pattern recognition method for yarn‐dyed fabric is proposed in this study. The proposed method uses the fabric images obtained from a high‐resolution digital camera image acquisition system. The local statistical texture features are used for yarn texture segmentation. The yarn color classification problem is then formulated in a research framework of multiregion fuzzy segmentation, which can be added auxiliary variables and solved efficiently by the fast dual projection algorithm. The color values of the yarn crossing points are calculated by the yarn color classification results. The locations of the yarn crossing points are detected by a lightness gradient projection method. Different kinds of fabrics are tested in the experiments. Experiments on 14 actual fabrics show that the approach proposed in this study is effective for classifying yarn color and extracting the yarn color pattern in yarn‐dyed fabric.     

Research of polylactide porous hollow nanofiber membrane with high selective absorption characteristics

A porous hollow fiber membrane using polylactide (PLA), a representative bio-derived polymer, was successfully fabricated. The use of high surface area fabrics can effectively absorb liquids, making it possible to impart selective absorbency to fabrics made of hydrophobic PLA. In this study, a porous PLA fabric was developed by applying the porosity of the fiber surface depending on the solvent, and the change was confirmed by morphological image analysis. To increase the total surface area effectively, hollow fibers were fabricated with coaxial electrospinning to maintain the pores of the surface while having a hollow space, and the changed oil absorption based on the fiber structure was measured. To enhance the selective absorption of the fabric to the oil, a coating process using nanoparticle was added. Dodecyltrichlorosilane-treated silica became superhydrophobic by attaching special functional groups to the surface of the particles. The treated silica was coated on the surface of the fabric to provide the functionality. To confirm the selective absorbency of the coated fabric, changes in oil and water absorption were analyzed, and the performance of the fabric was demonstrated. The fabricated PLA porous hollow fiber membranes are expected to replace existing products in the fields of tissue engineering, biofilters, and environment-friendly fabrics.     

Investigation of tearing mechanisms of woven textile

Tearing resistance is an important parameter for evaluating the reliability of textile structures, especially in the case of protective materials. In order to better understand the individual contribution of the different mechanisms involved in the tearing process, a study of the relation between the fabric and yarn properties characterizing these mechanisms and the tearing energy has been carried out. For that purpose, polyester fabrics with two types of weave patterns and various values of filling yarn density and linear density were characterized in terms of tongue tear energy, yarn and fabric modulus, breaking force and elongation at break, yarn slippage, and yarn jamming. Data for all tested fabrics relied on a unique master curve when the tearing energy was expressed as a function of the transverse yarn slippage force. This demonstrates the strong contribution of transverse yarn slippage to the tearing process, a mechanism which has generally been overlooked in previous works on tearing. Relationships between the tearing energy and the other properties characteristics of the mechanisms involved in tearing of woven textiles were also observed. These results build the path toward the development of models for the tearing energy of textile structures. POLYM. COMPOS., 2012. © 2012 Society of Plastics Engineers