N-甲基螺噁嗪光致变色化合物在织物上的应用研究

合成了N-甲基-3,3-二甲基螺[吲哚啉-2,3’(3H)萘并(2,1-b)(1,4)噁嗪]光致变色化合物,对其进行了紫外-可见光谱、红外光谱以及元素分析。以乙醇作溶剂进行无水印花,并对其光致变色性质进行检测,结果表明,纯棉织物较适合于制备光致变色织物,用PUI-112脂肪族聚氨酯作为粘合剂制得的印花织物,光致变色速度和回复速度较快。通过先制备光致变色色浆,再采用类似于颜料印花的方法将其印在织物上,可制得光致变色纯棉织物。通过对其光致变色性质进行检测,获得了较好的光致变色效果;测定了耐摩擦色牢度和耐洗色牢度,确定了最佳工艺条件。     

螺噁嗪光致变色染料

光致变色织物是指在某一波长光线照射下产生颜色变化,而光线消失后又可逆地恢复原来颜色的织物。其中,螺噁嗪类化合物是一类稳定性和抗疲劳性优良的光致变色材料。试验制备了具有光致变色性能的螺噁嗪材料N 甲基 3,3 二甲基 9′ 二氯均三嗪基螺［2H 吲哚 2,3′ （3H）萘并（2,1 b）（1,4） 噁嗪］,并用红外光谱对其结构进行表征。采用该螺噁嗪材料对棉织物进行超声染色,探讨染色工艺条件对光致变色性能的影响,确定优化的工艺条件为：染液质量浓度0.8 g/L,染色温度50 ℃,染色时间20 min,焙烘温度100 ℃,焙烘时间15 min。     

具光致变色功能的长余辉发光织物的制备研究

采用无水印花方法将1,3,3-三甲基-9'-羟基螺{2H-吲哚-2,3'-[3H]萘并[2,1-b](1,4)嗪}光致变色化合物处理到纯棉织物上,通过对其光致变色性进行检测和对比,筛选出了较适于制备光致变色织物的粘合剂为脂肪族聚氨酯PUI-112.通过先制备光致变色色浆而后采用类似于颜料印花的方法将其印在纯棉织物上,获得了很好的光致变色效果.研究并探讨了粘合剂种类、用量及焙烘条件和长余辉夜光印花浆的使用对光致变色效果的影响,确定了制备具光致变色功能的长余辉发光织物的最佳工艺.     

9′-羟基螺噁嗪的合成及其在涤纶织物上的应用

合成了目标化合物1,3,3-三甲基-9′-羟基螺{2H-吲哚-2,3′-[3H]萘并[2,1-b][1,4]噁嗪},通过先制备光敏变色色浆再采用类似于颜料印花方法将其应用到涤纶织物上,获得了很好的光敏变色效果.讨论了粘合剂种类、用量以及焙烘条件和使用柔软剂对光敏变色效果的影响,得到了制备光敏变色涤纶织物的最佳印花工艺条件：光敏变色色浆10.00%,PUI-112脂肪族聚氨酯30.00%,嗪恶QFR-410硅油柔软剂3.00%,印花增稠剂DRA 1.14%,水55.86%,120℃焙烘3 min.印花后试样耐摩擦色牢度较好,耐洗色牢度相对较差;柔软整理后试样手感有所提高,且柔软剂对光敏变色效果也没有影响.     

染苑精粹

正商业化光致变色染料在PP纤维中的应用2016171将2只商业化的光致变色染料螺噁嗪和萘吡喃,采用熔融纺丝法成功地应用在PP纤维上,制备光致变色纤维,测试了纤维的光致变色性能。研究发现,相同的染料用量,PP纤维的光致变色性能优于其在棉织物筛网印花的效果,2只染料都出现正的溶剂化显色现象。棉和PP上的染料,当在紫外光下暴晒时,二者的显色速率相当。但去除紫外光源后,染料的变褪色现象不同。螺噁嗪染料在     

聚氨酯-螺噁嗪光致变色微胶囊的制备及性能

以光致变色化合物螺噁嗪为芯材,聚氨酯为壁材,通过界面聚合法制备了光致变色微胶囊。采用扫描电镜、透射电镜、Zeta纳米粒度电位分析仪、红外光谱对光致变色微胶囊的形貌、粒径和结构进行了表征。结果表明,微胶囊为圆球形,芯材表面有聚氨酯生成,且表面光滑、完整,致密性能良好,具有明显的核壳结构,平均粒径为2.880μm,PDI值为0.087,且分布集中。微胶囊的变色效果、化学稳定性和耐疲劳性测试表明:光致变色微胶囊变色灵敏度为2.20,且可逆,不溶于乙醇、甲苯、环己烷等有机溶剂;与螺噁嗪相比,耐疲劳性得到提高,日晒30 d后其变色灵敏度仍为2.17。     

9'-羟基螺(噁)嗪的合成及其在涤纶织物上的应用

合成了目标化合物1,3,3-三甲基-9'-羟基螺{2H-吲哚-2,3-[3H]萘并[2,1-b][1,4](噁)嗪},通过先制备光敏变色色浆再采用类似于颜料印花方法将其应用到涤纶织物上,获得了很好的光敏变色效果,讨论了粘合剂种类、用量以及焙烘条件和使用柔软剂对光敏变色效果的影响.得到了制备光敏变色涤纶织物的最佳印花工艺条件:光敏变色色浆10.00%,PUI-112脂肪族聚氨酯30.00%,QFR-410硅油柔软剂3.00%,印花增稠剂DPA 1.14%,水55.86%,120℃焙烘3 min.印花后试样耐摩擦色牢度较好,耐洗色牢度相对较差;柔软整理后试样手感有所提高,且柔软剂对光敏变色效果也没有影响.     

螺恶嗪染料与乳胶的相互作用及其对纤维素纸张的光致变色功效

螺恶嗪(SO)是一类应用广泛的重要的光致变色染料,用于如防伪印刷、可逆存储照片装置、分子光开关电子元件等。由于这些染料十分昂贵,提高其光反应着色效率具有重要的实际意义。在本研究中,将螺恶嗪染料,1,3-二氢-1,3,3-三甲基螺[2H-吲哚-2,3’-[3H]-萘[2,1-b]-[1,4]恶嗪],分散到以聚苯乙烯-丙烯酸为基质的胶乳中,以获得加入光致变色染料的稳定的胶乳。透射电子显微镜(TEM)观察显示,乳胶颗粒充当SO粒子的载体,能够使SO粒子很好地分散在胶乳基质中。并对其他结果,包括色彩稳定性,抗疲劳性进行了讨论。     

棉织物的螺吡喃微胶囊印花及其光致变色性能

为获得一种可检测紫外光强度的光致变色纺织品,采用溶剂挥发法制备以螺吡喃光致变色材料为芯材,以聚甲基丙烯酸甲酯为壁材的微胶囊,用微胶囊对棉织物进行丝网印花。表征了所制备微胶囊的粒径、形貌、芯材包封率及光致变色性能。采用自制变色梯度板记录微胶囊印花织物变色色差,探究了紫外光辐照条件对棉织物光致变色性能的影响和印花工艺对其耐摩擦色牢度的影响。结果表明：螺吡喃微胶囊的平均粒径为729 nm,分散指数为0.34;印花织物变色色差随微胶囊质量分数、紫外光强度及照射时间的提高而增加,微胶囊质量分数为14%的印花织物经30 W/m²紫外光照射100 s,变色色差可达19.02;印花织物的耐干、湿摩擦色牢度分别可达4～5级和4级,20次紫外-可见光循环照射后光致变色色差损失12.26%。     

毛用活性染料湿摩擦牢度提升剂INVALON DAM

采用湿摩擦牢度提升剂INVALON DAM处理深浓色毛织物,探讨了湿摩擦牢度提升剂INVALON DAM质量浓度、p H值、处理温度和时间对毛织物耐摩擦色牢度的影响,得到优化的处理工艺为:湿摩擦牢度提升剂INVALON DAM质量浓度8 g/L,p H值4.5~6,处理温度70℃,处理时间20 min。经整理后的毛织物耐干/湿摩擦色牢度等级可提高0.5~1.5级,满足客户一等品质量要求。     

Study of chameleon nylon and polyester fabrics using photochromic ink

There is a growing interest in the development of chameleon textiles using chromic dyes (inks) for several uses, such as brand protection, responsive camouflage, ultraviolet (UV) sensors, and fashion apparel. However, their use is limited to very few colors and responsivity to color change in the spectral range. This investigation used two photochromic inks: magenta and turquoise. These inks change color when exposed to certain wavelengths of light. The magenta and turquoise photochromic inks belong to the naphthopyran and spironaphthoxazine classifications of dye, respectively. These plastisol inks were applied on the nylon and polyester fabrics using a screen-printing technique. The color-changing behavior of the printed fabrics was studied using a Hunter Lab Color Spectrophotometer after exposure to tungsten, fluorescent, UV, and sunlight. Each sample was subjected to five fade cycles to study the fading effects. The effects on the color changes of the magenta ink-printed fabrics were most intense under UV and sunlight, creating strong red colors with an increase in a-values, but only a small change in color was observed under fluorescent light. Turquoise ink-printed fabric exhibited very minor visible changes under UV and sunlight with a decrease in b-value. No significant effect on color changes and color strength was found after five fade cycles.     

光致变色织物光照变色疲劳性的研究

为设计光致变色斜纹织物,探讨光照时间与光照循环次数对光致变色纤维织物变色疲劳性的影响,测试光致变色纤维织物变色灵敏性与变色回复性。结果表明:随着照射时间的延长,织物的光致变色明度增大,有色色相快速降低,变色灵敏度降低;长时间暴晒会导致光致变色微胶囊凹陷、破裂,最终丧失光致变色性能。光致变色微胶囊制备及光致变色纤维纺丝时应适当加入光稳定剂或光降解抑制剂;织物在日常使用和维护中应尽量避免长时间暴晒,以延长使用寿命。     

Transparent Photochromic Wood Composites Incorporating AgBr Nanoparticles for UV-shielding Applications

Transparent wood (TW) is a wood-based biomaterial with several advantages, such as high optical transmittance, low thermal conductivity, and tunable haze. TW is functionalized according to its transparency to broaden its applications in different fields. Several studies have examined wood functionalization in recent years; however, few studies have reported photochromic TW (PTW) for ultraviolet (UV) -shielding window applications. Herein, PTW was obtained by infiltrating the delignified wood template with photochromic silver bromide (AgBr) nanoparticles and a pre-polymerized methyl methacrylate (MMA) mixture solution. The obtained PTW can adjust the luminous flux on change in the color in the visible light region. The photochromic properties were examined, and the optical properties of the composites were characterized using UV-Vis spectrophotometry. Light transmittance of PTW was up to 86.5% at 800 nm before UV irradiation, and it decreased to 70.1% at 800 nm after UV irradiation, as the wood color changed from colorless to dark purple under UV irradiation. Thus, this work not only achieves high-value utilization of wood, but also produces a new material that can be used in varied fields, such as UV-shielding, energy saving, and smart building.     

几种变色染料的变色机理以及在纺织品上的应用

介绍了几种常用的变色染料———光敏、热敏及湿敏变色染料的变色机理以及它们在纺织品加工中的应用情况。指出变色染料有着可观的发展前景和广阔的市场。并分别指出了光敏变色染料应在提高稳定性和耐光色牢度的基础上降低成本,热敏变色染料应该朝着低温、微胶囊化以及相应配套助剂的开发方向发展,湿敏变色染料应朝着产品种类的多样化和应用的广泛性方向发展。     

A review of photochromism in textiles and its measurement

Photochromism is a light-induced reversible change in colour defined as: ‘A reversible transformation in a chemical species between two forms having different absorption spectra brought about by photo-irradiation.’ This issue of Textile Progress provides a review of photochromism, the different methods for producing photochromic textiles, their properties, the measurement of kinetic colour changes, and their application in photochromic textiles. Photochromism can be utilised in a variety of textile products from everyday clothing to high-technology applications such as protective textiles, medical textiles, geo-textiles and sports textiles. Although photochromic materials have been used since 1960 to cut down the transmission of light through the lenses in sunglasses, there has been limited further development since that time due to technical difficulties not only in the application of photochromic colourants, but also with the measurement of kinetic colour-changing properties. Renewed interest in photochromic textiles has arisen due to improved commercial potential in particular for applications as photochromic nanofibres, in ‘smart’ textiles and in ‘smart’ clothing.     

光致变色化合物的合成及应用研究

与其它类光致变色化合物相比，本合成的吲哚螺恶嗪类光致变化合物，具有良好的热稳定性、抗疲劳性、耐久性和能反复使用等特点。该化合物在紫外光照射下，颜色由无色变成蓝色，再用红外光照射或置于暗处，颜色变回到无色。通过合成实验，找出了产率高、方法较合理的反应流程。进行配置和制膜实验，结果表明其显色性、灵敏度及耐久性均较理想。     

光致变色功能织物的制备及应用

介绍了光致变色织物的变色机理以及其应用范围，详述了E1前光致变色织物主要的生产方法及研究现状，并对光致变色技术今后的研究热点及主要发展方向进行了展望。     

光致变色涂布防伪纸及防伪性能研究

对光致变色功能材料(稀土铕配合物)在纸张涂料体系中的应用进行了系统的研究,确定了最佳涂料配方,研制开发了光致变色涂布防伪纸,并对其防伪性能从荧光发射光谱角度和相对荧光强度值方面进行了表征。     

变色织物生产技术

综合叙述变色织物的三种生产技术,即纤椎技术、染色技术和印花技术。