【作者】 王少华；

【导师】 房宽峻；

【作者基本信息】 江南大学 ， 纺织工程， 2008， 硕士

【摘要】 直接对未经任何处理的织物进行喷墨印花图案容易渗化,并且得色较浅。因此,为了获得较为清晰和颜色鲜艳度的喷印织物,需对织物进行预处理。传统的预处理方法是采用一些化学品如:增稠剂和阳离子试剂的水溶液对织物进行湿态加工处理。该方法工艺流程较为复杂、耗能耗水量极大、并且在处理过程中会产生大量含有毒素物质的废水,导致环境污染。当前,国际上对环境质量的恶化与生态平衡的失调十分关注,特别是水资源短缺和水污染问题引起了人们的密切关注。等离子体作为一种清洁生产技术已引起了各个国家众多研究学者的广泛关注,与传统改性处理相比,采用等离子对纺织品进行表面改性具有较为广泛的适用范围、不影响纤维和织物的整体性能、化学物品消耗低及较高的可靠性和安全性等优点。等离子处理并不涉及使用危险化学品,不存在废水处理问题,所以对环境负荷比较小,因此符合生态加工的定义。本课题分别采用低氧等离子体和脉冲式常压空气等离子体对真丝和涤纶织物进行表面改性处理,研究等离子体处理对喷墨打印织物颜色性能的影响。通过对真丝织物进行低氧等离子体表面改性处理,后用浅品色纳米颜料墨水喷墨印花。结果表明,真丝织物的最佳处理工艺条件为:时间10min,压强50Pa,功率80W。经该条件处理后的真丝织物图案清晰、得色深度有所提高。原子力显微镜分析结果表明经低氧等离子体处理后在真丝纤维表面形成沟壑状裂纹、动态接触角测试结果表明处理后真丝纤维的润湿性能得到了明显提高。为了将该工艺推广向大规模工业化,采用脉冲式常压空气等离子体对真丝和涤纶织物进行表面改性预处理。对处理后纤维的表面形貌和表面化学组成分别采用SEM和XPS进行表征。结果表明,脉冲式常压空气等离子体并未在纤维表面形成刻蚀作用,织物亲水性的提高主要是由于在纤维表面引入的一些含氧的极性基团。因而在不影响织物服用性能的情况下可显著提高织物的喷墨打印性能。因此,与传统方法相比,采用等离子体对织物进行表面改性处理开辟了一种节能环保的新方法。更多还原

【Abstract】 Patterns directly printed with pigment inks have poor color yields and easily bleed. In order to improve the inkjet printing sharpness of fabrics, pre-processing of fabric must be done before printing. Traditional pre-processing was to size the fabrics using solutions of some chemicals such as thickeners and cationic reagents. This process is very long and complicated, with huge energy and water consumption. At the same time, toxic substance and waste water would be produced during process, which lead to environmental pollution. In recent years, People have paid great attentions to environmental deterioration and ecology balance, especially the problem of water shortage and environmental pollution. The plasma technique, as one of environmental friendly process, has been widely used to modify the surface properties of polymers and textile materials over the past decade. Compared with traditional methods, plasma treatment have the following advantages: it only modifies the outmost thin layer of the surface, while the bulk properties will be kept untouched; lower chemical consumption and higher security; no waste water produced; less burden on environment and totally fit to the definition of textile ecological manufacturing. The aim of this research was to study the effect of pretreatment of silk and polyester fabrics on the samples’color performance by using low temperature oxygen plasma and pulse atmospheric air plasma, respectively.Plasma surface-treatment of silk fabric was carried out in an oxygen atmosphere under different experimental conditions. The samples were printed with magenta pigment ink after treatment. The results showed that the optimum treatment conditions we obtained were exposure time of 10 min at a working pressure of 50 Pa and a working power around 80 W. At such conditions surface-modified silk fabrics could obtain the effects of features with enhanced color yields and excellent pattern sharpness. Atomic force microscope (AFM) images indicated that low temperature oxygen plasma initiated modifications to the surface of silk fiber with more grooves. Dynamic contact angle (DCA) analysis showed that the hydrophilicity of silk fiber was remarkably improved after pretreatment with plasma.In order to extend this technique into industrialization, we present a study of the surface modification of silk and polyester fabrics using pulse atmospheric air plasma. Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) were used to observe the change of fiber morphology and surface chemical composition, respectively. SEM and XPS analysis indicates that the enhanced wettability was mainly contributed by the oxygen containing polar groups induced onto fiber surfaces through plasma treatment. Consequently, the anti-bleeding performance of both fabrics for inkjet printing was markedly improved, and the pattern sharpness considerably increased. Thereby the surface modification method for both fabrics used here offers a potential way for pretreatment of fabrics for inkjet printing with the advantages of environmental friendly and energy saving over traditional pretreatment methods.更多还原