Developing a scalable process is critical to manufacture conductive fabric for commercial applications. This paper describes a scalable coating process that is compatible with existing industrial finishing processes of fabrics. In this process, the fabric is continuously dipped in water-based metal salt and the reducing agent solution to impart conductive particles on the fiber surface. After 10 consecutive cycles of dip coating, the fabric shows 6 Ω/in. of resistance. The process is tuned to minimize process cost and material cost, and maximize the durability of the fabric. This paper also introduces an easy protective coating technique of the conductive fabric that improves the durability of the conductive fabric without sacrificing the comfort properties of textile fabrics such as breathability and flexibility. The encapsulated conductive fabric shows good air-permeability and it is 6.96 cm 3 /cm 2 /s. Moreover, the conductivity of the encapsulated fabric is quite stable after four accelerated washing cycles. Additionally, the fabric remains conductive on the surfaces and is suitable for using as a conductive track and connectors.
Uses of natural fibers in the field of composites are often restricted by their poor mechanical and interfacial properties. Fiber constitutions have significant influence over both of these properties. Traditional alkali treatment is mainly used to solve this problem which is not environmentally friendly and also not cost effective. A cost effective, less hazardous and sustainable sodium bicarbonate chemical treatment has been used as an alternative of traditional mercerization on jute fibers with an objective of manufacturing high‐performance natural fiber composites. Jute fibers were hand combed and treated with hot water and bicarbonate (5% and 10%) and further reinforced with epoxy resin to make composites. The mechanical characterizations of jute fiber were carried out using single fiber tensile tests; reliability analysis of the experimental data was performed. Interfacial adhesion of jute fiber with an epoxy matrix was investigated by using single fiber pull‐out techniques. The mechanical behavior of jute fiber/epoxy composites was studied by flexural testing. FTIR analysis indicates that sodium bicarbonate treatment can progressively remove hemicellulose and reduce the content of lignins present in the fiber. The results also showed that a 10% sodium bicarbonate concentration increased the tensile properties of jute fiber, enhanced the interfacial shear strength and flexural properties of jute/epoxy composites.
Recently, the consumption of core-spun yarn is increasing owing to its growing application in functional textiles. In a core-spun yarn, filaments as a core material are being used to provide functional properties, while natural fibers as a cover material are being used to provide surface physical properties and a natural outlook. In this study, jute-covered core-spun yarns containing polyester filaments with different linear densities were made in a modified jute flyer-spinning frame with the distinguishably positioned filament feed. The physico-mechanical properties of the manufactured core-spun yarns were examined, and the results were analyzed with the SPSS software. Compared with the 100% jute yarn, the jute-covered core-spun yarns have significantly higher tenacity (233.13% to 315.5%) and breaking elongation (257.9% to 367%), and lower unevenness (Um%), imperfection values, and degree of hairiness. Such good-quality core-spun yarn can be used in functional, value-added, and different diversified jute products.
The Backrest roller is one of the key parts of the weaving machine. In this study, the effect of the various position of backrest and dropper has been assessed. The tension is measured by using the integrated tension measuring device of the loom. The tension can be found on the display board. The effect of backrest position can be described in two different ways viz. keeping constant dropper position (distance between dropper line and backrest roller) and keeping constant dropper depth (distance between held frame and dropper line). If dropper position (distance between backrest roller to dropper line) is kept constant then the backward movement of backrest roller will entail low tension. The reason behind this is, the dropper weight will be moved toward the backrest roller and will lose its influence on warp tension. But if dropper depth is kept constant (i,e dropper line is kept intact) then the backward movement of backrest will require more tension as the influence of dropper will more on warp length. On the other hand, when backrest height is lowered then, the downward movement of backrest roller will need low tension and upward movement of backrest roller will need more tension. As the warp length and lap angle increases with the backrest height. In this paper, the whole phenomenon is explained with illustration. IntroductionWeaving is one of the most important fabric manufacturing processes. For producing good quality fabric proper warp tension is a vital need. High tension may cause high warp breakage and low tension can cause different fabric faults. For ensuring proper warp tension electronic warp control (EWC) is used in the modern loom. But changing of different loom setting points can play an important role in determining proper warp tension which may be an important tool for eliminating starting mark, weaving damage, frequent false stoppage etc.The backrest is one of the most crucial parts of loom setting. It affects the fabric properties and quality. Fabric appearances, dimensional stability, starting mark, tensile strength etc are directly related with backrest roller position. H. Tahakori Shad et. al. (H. Tahakori Shad, 2013) found that the position of backrest roller has significant effect on breaking strength, elongation at break; tear resistance, abrasion resistance, air and water permeability etc. on grey fabric along the warp but it has no significant influence on the breaking strength in the weft direction, weft yarn density, abrasion resistance, and fabric weight. To have different backrest oscillations, springs with different stiffness were used. For each spring, fabrics with various weft densities were woven, and the warp tensions were measured and saved during the weaving process. Kloppels M et. al. (Kloppels M, 2002) reported that the variations in warp yarn tension during the weaving process become smaller by the backrest roller's swinging motion. At a high speed of the weaving machine, it could be possible to obtain a suitable relationship between movements of the backrest ...
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