光催化自清洁涂层纺织品的制备

为解决自清洁纺织品的耐久性问题,简化加工工艺,以丙烯酸树脂与纳米TiO2 为原料,采用不同的加工工艺,在涤纶机织物表面进行涂层整理,制备了具有自清洁性能的涂层织物,用分解亚甲基蓝的方法对涂层织物的自清洁性能进行表征。采用扫描电子显微镜（SEM）和能谱仪（EDS）对涂层织物的表面形貌及元素组成进行分析。结果表明：不同涂层工艺会影响织物的自清洁效果;一定范围内,涂层织物的自清洁性能随纳米TiO2 质量浓度的增加而提高,当TiO2 质量浓度达到30g/L 时,继续增大TiO2质量浓度,自清洁效果提升不明显;在经过不同类型以及不同次数的摩擦牢度测试后,自清洁效果保持良好。     

超疏水气凝胶涂层超高分子量聚乙烯织物的制备与表征

为提高超高分子量聚乙烯织物的疏水性能,基于荷叶效应原理,采用涂层方法在织物表面构筑纳米微米结构。将二氧化硅气凝胶分散于聚偏氟乙烯（PVDF）溶液中制成涂层液,并对超高分子量聚乙烯织物进行涂层处理。借助Ｘ 射线光电子能谱仪、扫描电子显微镜、原子力显微镜等测试织物表面的化学组成及微结构,并采用集灰实验测定织物的自清洁性能。结果表明：当PVDF质量分数为12%、二氧化硅气凝胶质量分数为8% 时,涂层织物表面的最大接触角为157.8°,滚动角为3°;涂层膜表面有微米级突起和纳米级颗粒状突起;水滴可将涂层后织物表面的污物带走,织物具有良好的自清洁效果。     

TiO2纳米材料防紫外线涂层整理

采用TiO2纳米溶胶与增稠剂混配制成防紫外线涂层剂，并对棉织物进行涂层，通过对织物性能分析测试，比较了不同增稠剂制备的涂层剂外观颜色、粘度以及涂层效果，发现A邦浆的效果较好；TiO2纳米涂层胶的浓度视织物厚薄而定，一般为0．04～0．15mol／L，涂层织物的耐洗涤性、手感、白度和强力均较好。     

二氧化钛自清洁涂层研究进展

介绍了二氧化钛(TiO2)自清洁涂层技术的最新研究进展,包括光催化氧化自清洁表面制备的涂层技术以及溶胶-凝胶法、等离子体法、层层自组装法、纳米粒子法、化学气相沉积法和磁控溅射法等.不同制备工艺给涂层材料引入各种功能性,如耐久性、耐老化性等.     

TiO2光触媒纺织品自清洁性能评价方法探究

本文介绍了TiO2光触媒自清洁纺织品的分类、自清洁机理以及TiO2光触媒材料自清洁性能的一些评价方法,并结合TiO2光触媒纺织品自身的性质进行适用性分析。特别提出了评价TiO2光触媒纺织品的自清洁性能时,不能从光催化性能一方面考虑,而要将光催化性和光致超亲水性结合起来综合去评价其自清洁性能。     

光催化自清洁整理剂制备及在涤棉织物上的应用

Tb掺杂的TiO2粉体材料,能有效增加纳米材料在紫外光区的吸收,提高光催化效率。以纳米Tb掺杂的TiO2复合粉体为原料,聚乙二醇为分散剂,对粉体进行有效分散,制得一种分散均匀、平均粒径约为50 nm的自清洁整理剂。通过正交试验,得出最佳分散工艺条件为:纳米TiO2粉体1 g/L、聚乙二醇分散剂1 g/L,pH 7.0,高剪切作用时间30 min,剪切机转速为5 000 r/min,超声波作用时间10 min。采用合适的整理工艺对涤棉织物进行功能性整理,并对整理试样滴上红色辣椒油,最后对含有辣椒油的织物的K/S值进行测试。结果表明,该纳米自清洁整理剂整理过的织物具备良好的可见光催化自清洁性能,相对织物质量整理剂质量分数在11%及以上的织物试样,在24~48 h内就可以将其上的辣椒油污完全分解,显示良好的光催化自清洁性能。     

纳米自清洁羊绒针织品的研究与开发

通过研究纳米TiO2复合粉体的光催化自清洁特性,对复合纳米粉体进行有效分散,开发研制出一种纳米自清洁整理剂,并结合和分析羊绒纤维和羊绒针织品的特殊性质,对羊绒针织品进行纳米自清洁整理工艺,开发出实用的具有光催化自清洁功能的羊绒针织品.测试和分析了该纳米自清洁羊绒针织品的自清洁性能和顶破强力、悬垂性、透气性等服用性能.得出该纳米自清洁羊绒针织品对于有机油污具有良好的自清洁效果,一般情况下,经过不同纳米TiO2复合粉体含量的整理剂整理的羊绒针织品,在1～2天内就可以将其上的有机油污完全分解自洁,同时保持织物原有的风格和性能.     

溅射功率对沉积纳米TiO2织物光催化性能的影响

室温条件下采用直流磁控反应溅射技术在涤纶纺粘非织造织物表面生长二氧化钛（TiO2）薄膜。采用X射线光电子能谱仪、X射线衍射仪和原子力显微镜对不同溅射功率条件下所制备TiO2薄膜的结构和表面形貌进行表征,研究溅射功率对薄膜沉积速率以及沉积纳米TiO2织物光催化性能的影响。实验表明：在一定范围内,溅射功率对沉积薄膜的化学结构影响不大,但溅射功率增加,薄膜的沉积速率和溅射效率提高,薄膜均匀性、致密性增加,沉积纳米TiO2织物光催化性能提高。但过高的溅射功率使靶材出现过温,不仅使薄膜沉积速率降低,均匀性下降,而且易损伤靶材。     

纳米自清洁棉针织服装的研究与开发

介绍了纳米TiO2材料的光催化反应原理,采用自制的纳米整理剂对棉针织物进行光催化自清洁整理,并且对整理前后的织物进行了扫描电镜、顶破混力、透气性等实验对比,结果发现,该复合纳米自清洁整理剂对棉针织物整理后,在保持织物原有性能的同时,具有较强的自清洁功能。     

纳米TiO2改性造纸涂料的性能及其流变行为

研究了纳米TiO2改善造纸涂料的性能及添加纳米TiO2对涂布纸涂层抗老化性能的影响.结果表明:纳米TiO2用量为1.0份时能够较好地提高涂层的耐光性能,经光老化后,涂布纸白度和表面强度分别降低了9.6%和13.5%,而不添加纳米TiO2的涂层,白度和表面强度分别降低了17.1%和16.7%.通过流变性实验,分析了添加纳米TiO2涂料的流变行为.     

毛涤西服面料的自清洁性能

西服面料经过多次洗涤,不仅造成了能源的消耗,还对织物的服用性能造成影响。为了最大程度地保证织物外观风格,本试验研究了二氧化钛的光催化自清洁特性。采用单因素分析和正交实验,对复合纳米粉体进行有效分散,开发研制出一种复合纳米自清洁整理剂。毛涤混纺西服面料作为主要研究对象。结果表明,经过纳米自清洁整理剂整理过的毛涤西服面料具备良好的光催化自清洁性能。相对织物用量为10%的毛涤西服面料表现出最好的自清洁效果,在60h内油渍被大量分解。此整理剂在重复性测试以及耐洗牢度测试中均表现出很好的自清洁效果。     

银/二氧化钛可见光催化自清洁织物的制备及其性能

为制备基于可见光光催化降解机制的自清洁织物,吡咯(Py)为单体,以硝酸银为银源,通过化学氧化聚合在商业化的纳米二氧化钛(TiO2 )表面形成聚吡咯掺杂银包覆层(PPy-Ag/ TiO2 ),然后高温焙烧去除PPy,获得可见光响应催化剂银/ 二氧化钛(Ag/ TiO2 )。通过共分散溶液用浸渍涂覆法将其涂覆到聚丙烯腈(PAN)纤维上,经加捻、合股织制成织物。借助扫描电子显微镜、红外光谱分析仪、热重分析仪、紫外可见分光光度计等测试织物的结构和性能。结果表明：Ag/ TiO2 粒子较均匀地负载到PAN 纤维表面,其负载率约为3. 17%;涂覆Ag/ TiO2 的织物对亚甲基蓝、罗丹明B 和红酒在可见光下具有良好的降解作用,表现出良好的自清洁效果;经多次洗涤后,该织物仍保持良好的光催化效果,具有良好的耐洗牢度。     

涤纶织物纳米TiO2颗粒化学复合镀银

采用化学镀技术,实现了不同分散剂分散纳米TiO2颗粒涤纶织物表面化学复合镀银,借助SEM、XRD和TG对镀层表面形貌、结构和织物热性能进行研究,测试织物的电磁波屏蔽、导电、耐磨、透气和光催化性能.结果表明:用PVP&T80作分散剂时,纳米TiO2的引入对镀层结构没有影响,但晶粒尺寸增大;随着纳米TiO2质量浓度的增加,...     

Investigation of thermal comfort properties of zinc oxide coated woven cotton fabric

In this paper, we investigated thermal comfort properties of twill weave cotton woven fabric coated zinc oxide layer in Roaches high temperature sample dyeing machine in gentle conditions. The effect of coated film structure on thermal comfort properties of the fabric was characterized using SEM observation, EDS analysis, and Permetest instruments. EDS analysis and SEM images of the ZnO coated twill weave cotton fabric proved that ZnO coating layer which has significant effects on thermal comfort properties was successfully synthesized on the fabric surface by covering the pores of the twill weave cotton fabric. Results showed that thermal resistance of ZnO coated fabric increased approx. 36–52%, while thermal conductivity is decreased approx. 27–34% and WVP is decreased approx. 22–28%. Further studies have started and in progress to evaluate wash fastness, wear performance, abrasion properties, and fabric handle properties.     

硅胶黏度对汽车安全气囊涂层织物力学性能的影响

用不同黏度的硅胶与锦纶66织物经刮刀烘干式涂层工艺制得相应的汽车安全气囊涂层织物,对其力学性能如断裂强度、断裂伸长率、撕裂强度、耐磨性能和刚度进行了测试和分析。实验结果表明:硅胶性能和涂层界面分布对涂层织物的力学性能有着明显的影响,即随着硅胶黏度的降低,涂层织物的拉伸断裂强度、断裂伸长率、撕裂强度和耐磨性能均明显改善,而刚度维持不变。在设计安全气囊气袋时,应综合考虑材料成本和气囊模块功能来选用由合适类型的硅胶涂层的锦纶66织物。     

RSM optimized self-cleaning nano-finishing on polyester/wool fabric pretreated with oxygen plasma

In this study, polyester/wool blended fabric was coated with titanium dioxide nanoparticles. To enhance the adsorption and loading of nanoparticles on wool and polyester fibers, the samples were pretreated by low-temperature oxygen plasma. Citric acid was used to fix the TiO₂ nanoparticles on the fibers. The self-cleaning property of the finished samples was tested under UV-A light. The effect of plasma treatment time besides the concentrations of TiO₂ nanoparticles and citric acid on the self-cleaning properties of the samples was analyzed and optimized using response surface methodology. The surface chemistry and morphology of the samples were studied using Attenuated total reflectance-fourier transform infrared spectorscopy (ATR-FTIR) and field emission scanning electron microscope, respectively. The results showed that plasma treatment has a great effect on the loading of the nanoparticles on the surface of the fibers and enhancing the self-cleaning properties of the finished samples. The plasma-treated samples showed better water absorbency, enhanced tensile strength and approximately the same handle compared to raw samples after coating with TiO₂ nanoparticles.     

Development of moisture vapour permeable waterproof cotton fabric by coating with blend of natural rubber latex and polyvinyl alcohol

Cotton fabric was coated with aqueous dispersion containing blend of natural rubber latex (NRL), polyvinyl alcohol (PVA) and starch following a knife-over-roll technique to produce moisture vapour permeable waterproof coating. Coating of cotton with a formulation containing NRL, 15% aqueous PVA and tamarind kernel seed powder as starch, in the ratio of 1:3: 0.3 in presence of a typical sulphur curing system, followed by drying of the coated fabric at 95 °C for 5 min and subsequent vulcanization at 120 °C for 2 h produced most balanced improvements in the properties of the coated fabric such as, waterproofness, breathability as revealed by moisture vapour transmission rate, coating adhesion, tensile properties, abrasion resistance and flex endurance. Incorporation of PVA makes the coating permeable to moisture vapour and such property is promoted further in presence of starch in the coating formulation. Examination of surface morphology of vulcanized coating by scanning electron microscopy revealed that poly vinyl alcohol crystals formed clusters of dimensions of only few microns in the rubber matrix. Such clusters of PVA served as conduits for transportation of moisture vapour through the film of NRL while acting as an effective barrier to liquid water droplets.     

Preparation and characterization of multifunctional cotton fabric by coating with sonochemically synthesized zinc oxide nanoparticle-flakes and a novel approach to monitor its self-cleaning property

Multifunctional cotton fabric has been prepared by pad-dry-coating with sonochemically synthesized zinc oxide nanoparticles. The uniqueness of sonochemical synthesis is that it synthesizes without alkali at near neutral pH and hence the cotton fabric is exposed to less chemical stress. As a result of coating, the fabric shows enhanced mechanical strength, water and stain repellence, antimicrobial properties, UV-blocking capacity and self-cleaning characteristics compared to the uncoated fabric. The self-cleaning property was tested with Trypan Blue dye under sunlight. The attempt of quantifying the self-cleaning process with the rate of decolorization is a novel one. It was observed that about 69% of the colour was removed when the coated fabric was exposed to sunlight for 3 h and 30 min. The fading of colour followed pseudo-first-order kinetics.