共查询到19条相似文献,搜索用时 718 毫秒
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介绍了热敏变色材料、微胶囊技术以及热敏变色纺织品的制造技术,并对微胶囊技术在热敏变色纺织品领域的应用进行了综述,探讨未来发展的方向。 相似文献
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变色材料在纺织品上的应用 总被引:1,自引:0,他引:1
介绍了变色材料的分类、变色原理及在纺织品中应用的意义和应用方法;介绍了变色纤维和变色染料(颜料)微胶囊的制备方法和用于纺织品中的变色染料应具备的条件;并列举了应用实例。 相似文献
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热敏变色纺织品个性化与时尚感强,能实现色彩动态变化,具有良好的功能实用性,可提高产品附加值。为适应纺织领域对热敏变色材料的要求,微胶囊技术常应用于热敏变色纺织材料的开发。文中总结目前热敏变色纺织材料的加工方法,对现有国内外研究者对热敏变色纺织材料的制备进行归纳总结,得出热敏变色微胶囊技术广泛用于纺织领域,主要使用印花法和后整理法加工得到热敏变色纺织材料;热敏变色纺织材料的色谱拓展是目前研究的新方向;结合其他功能整理或功能材料,可实现热敏变色纺织品的多功能化。 相似文献
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变色材料是一种新型功能材料,在信息存储、装饰材料、感光材料、军用伪装服及医疗防护服等多个领域广泛应用。基于微胶囊技术良好的密封性和隔离性,其已成为制备变色材料的重要方法之一。文中从目前变色材料的种类、微胶囊技术的制备方法及各种制备方法下微胶囊化变色材料的应用展开讨论,同时指出目前研究存在的问题。分析可知,基于微胶囊化的变色材料变色更灵敏、化学材料稳定性更高、色谱范围更广、耐用时间更长、材料使用范围更宽。 相似文献
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为了扩展光致变色材料在纺织品中的应用,实现可逆型光致变色纺织品,针对光致变色材料容易受到光照、温度、氧气及pH值等因素影响而导致耐光照色牢度性能劣变的问题,设计了一种新型双层光致变色微胶囊的包覆方法,成功将受阻胺类光稳定剂包覆到微胶囊中,并在微胶囊表面形成外层由二氧化硅形成的无机囊壁,然后将制备的光致变色微胶囊掺入透明印花浆料,采用平网印刷工艺得到光致变色印花织物。结果表明:乳化剂添加量为40 g/L,硅酸钠质量浓度为14 g/L时,光致变色微胶囊粒径分布均匀,成型状况很好、包覆完整;光变微胶囊具有良好的光致变色性能,即便是最低光辐照度2,光照8 s,光变印花织物变色前后色差可达11.39,且变色寿命高于40 h。 相似文献
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相变材料微胶囊在纺织品中的研究发展 总被引:1,自引:1,他引:0
相变材料微胶囊已经广泛应用于纺织品、传热流体、建筑物、军事、农业等领域。作为近年来研究热点的相变纺织品是一种新型的智能保温材料。文章详细介绍了相变材料的类别、相变材料微胶囊技术以及制备方法;从相变材料的基本概念出发,论述了相变材料在纺织品中的作用机理、应用及发展前景。 相似文献
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针对温度刺激响应变色微胶囊变色温度区间大和变色滞后严重的问题,将带有酰胺基团的荧烷染料与十六醇均匀混合,制备了快速响应二元温感变色复配物;采用溶剂挥发法制备了高灵敏温感变色微胶囊,并通过丝网印花技术将微胶囊整理到织物上制备了高灵敏温感变色智能纺织品,分析了高灵敏温感变色微胶囊的表观形貌、粒径、核壳结构、热学性能和芯材负载量;研究了智能纺织品的形貌特征和变色性能。结果表明:高灵敏温感变色微胶囊的粒径为1 μm,芯材负载量约为65%,耐热稳定性较好;制备的高灵敏温感变色智能纺织品颜色鲜艳,变色区间为40~42 ℃,升温与降温过程的变色滞后小于1 ℃,变色灵敏度高。 相似文献
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为探索胆固醇类液晶在热致变色纺织品制备中的应用,采用三羟甲基三聚氰胺为壁材,胆固醇油醇碳酸酯和胆固醇壬酸酯的混合物为芯材,利用原位聚合法制备了胆固醇液晶微胶囊。对制备得到液晶微胶囊的微观形貌特征、热学性能以及热致变色性能进行了测试。测试结果表明:在乳化速度为6 000r/min、芯壁质量比为3:2、微胶囊包覆时反应溶液pH值为4.0的条件下,制备的液晶微胶囊粒径分布在10μm左右,微胶囊具有致密的壳结构、表面光滑的球形形态,以及良好的热致变色性能;它可在34.4 ~38.0 ℃的温度区间内,依次显示红黄绿蓝紫的颜色变化;其变色温度与人体体温接近,适合用于热致变色织物的制备。 相似文献
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Insect repellent textiles are currently being investigated as a complementary tool to control disease vectors, such as mosquitoes. The application of microencapsulated biopesticides to textiles is a promising low-toxicity alternative to other control methods, as microcapsules may prolong the release of the repellent agent. In this work, microcapsules containing two biopesticides, namely citronella essential oil and citriodiol® were prepared and applied to cotton textiles using a variety of techniques. The aim of this work was to evaluate these functional textiles to select the most efficient, durable systems. Citriodiol-treated cotton presented a prolonged durability, and 100% repellency could be achieved for more than 30 days after padding onto cotton fabrics. It has to be pointed out that all these repellent textiles have been obtained by scalable, low-cost methods which would require no additional investment for textile finishing industries. 相似文献
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为解决热敏变色材料色谱范围窄、颜色变化单一的问题,以使用原位聚合法得到的热敏变色微胶囊为基础模板,将其分别与制备的红、黄色微胶囊进行拼色实验。通过减法混色原理,不同颜色的微胶囊混合后会呈现出另一种颜色,达到了色谱拓展的目的。借助扫描电子显微镜及红外光谱仪表征了微胶囊的形貌和结构,测试了拼色样品的色差、反射率、K/S值。结果表明:成功制备出了以甲醛-三聚氰胺树脂为壁材、三芳甲烷类基础变色体系为芯材的热敏变色微胶囊;随着外界温度的变化,微胶囊混合体系的颜色也发生显著变化,实现了在不同色调之间的可逆变化,拓展了热敏变色微胶囊的变色色谱范围。 相似文献
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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%。 相似文献
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In this paper, we report the physicochemical and sensory properties of milk supplemented with a powder of microencapsulated lactase. The core material was lactase (β-galactosidase), the primary coating material was medium-chain triglyceride (MCT), and the secondary (enteric) coating material was either hydroxypropyl methylcellulose phthalate (HPMCP) or shellac, comparing both against market milk as a control. The physicochemical properties of both types of microcapsules were analyzed, including the particle size, zeta potential, and in vitro release behavior. To survey the stability of the microcapsules in milk during storage, we studied the residual lactose content and pH. Furthermore, to determine the properties of milk supplemented with the microcapsules, changes in color and sensory properties were evaluated during storage. The particle sizes (volume-weighted mean; D[4,3]) of the microcapsules coated with HPMCP or shellac were 2,836 and 7,834 nm, respectively, and the zeta potential of the capsules coated with shellac was higher than the zeta potential of those coated with HPMCP. The pH levels of milk supplemented with the lactase microcapsules were similar to those of the control (unsupplemented market milk); however, for milk supplemented with HPMCP-coated microcapsules, the pH was slightly lower. The core material, lactase, was released from the microcapsules during 12-d storage, and 18.82 and 35.09% of lactose was hydrolyzed in the samples for HPMCP- and shellac-coated microcapsules, respectively. The sensory characteristics of milk containing microcapsules coated with HPMCP did not show significant differences from the control, in terms of sweetness or off-taste, until 8 d of storage. However, shellac-coated microcapsules showed significant difference in sweetness and off-taste at d 8 and 6 of storage, respectively. The color of milk containing HPMCP-coated microcapsules did not show a significant difference during storage. However, that containing shellac-coated microcapsules was somewhat higher in color values than others. In particular, it showed significance from 0 to 4 d storage in L* and C* values. In conclusion, a powder of lactase microcapsules coated with HPMCP can be suitable as a supplement for milk. 相似文献