Advanced Materials Research Vols. 332-334

Abstract: Fabric keyboard is a field of smart textile. It can overcome many disadvantages of conventional keyboard. In order to study the fabric keyboard switch, trapezia structures of two kinds of orifice dimension are designed for example 8 wefts and 16 wefts. Different roots of conductive wires are woven into the down layer of the orifice part for each kind of orifice dimension. 4 and 8 roots of wires are woven for 8 wefts. 4, 8 and 16 roots of wires are woven for 16wefts. Then the immediate regain, connection pressure, connection ratio and contact resistance are tested and analyzed for every kind of fabric keyboard switch. It is concluded that 8 wefts orifice dimension and 8 roots of wires woven into the down layer of the orifice part is a better project. These findings may assist in recommendations regarding the further development of flexible fabric keyboard.

Abstract: In this paper, four kinds of natural fibers (cotton, wool, silk and ramie) are studied. Three experimental programs are designed, and influence factors of sound absorption properties of porous sound absorption material are discussed. With the change of material thickness and cavity length, the variation of sound absorption coefficient is obtained in different noise frequency.

Abstract: Zhejiang province is located in the coastal area of southeast China. Its folk costumes have the particular culture implication due to its unique historical and cultural background, customs and geographical regions. As an integral part of regional costumes which formed in the coastal specific natural and human environment, Long Pants not only displays a certain degree of multi-cultural identity of territoriality, comfort and efficacy but also reflects its customs, religions, aesthetic preferences and so on. Through the analysis and research of historical origins, costume shapes, colors and decorative patterns in depth, this paper systematically elaborates and sums up its functions of regional culture.

Abstract: More and more attention has been paid to natural materials. This paper was carried out with an intention to investigate the effect of electrospun silk fibroin (SF) nanofibrous mats by mixing different weight raito of chitosan (CS) in the same solvent-formic acid. Based on good electrospining feasibility, it was found that the average diameter of spun fibers became fine from 337nm to 103nm, with the concentration of CS in the blend compositions increasing to 4%.At the same time, the conformational transition of SF nanofibers adding CS occured to the tendence towards β-sheet structure by means of the analysis of the Fourier transform infrared spectroscopy (FTIR), Wide angle X-ray diffraction (WAXD) and Differential thermal analysis (TGA).What was more, excellent antibacterial activity(a degree growth inhibition of more than 95%) of the promising nanofibrous mats was revealed, through utilizing the colony counting method against Gram-positive bacteria S. aureus and Gram-negative bacteria E.coli ,which would open up wide applications on would dressing, filtration and environmental purification.

Abstract: Filter made by polyester woven fabric may deform in service, which may be improved by interweaving polyester and continuous basalt fiber filaments. The dimensional stabilities of polyester woven filter and continuous basalt fiber/polyester woven filter were observed under the conditions of dry heating at high temperature and hot dilute alkali environment. It was found that the continuous basalt fiber was helpful to improve the dimension stability of the woven filter fabrics in different concentrations of hot dilute alkali.

Abstract: Although manufactured nanomaterials have a great many of fantastic functions，the adverse impacts about them have been observed. As a kind of nanomaterial, biomedical films obtained from electrospinning are valued greatly, and the sizes of the diameters in electrospun films plays a fundamental role in enhancing the safety of films. When the diameter of fibers increased to hundreds of nanometers, it will become difficult for fibers to diffuse and infiltrate into human’s body, and then the security of the biomedical films is enhanced greatly. In our work, high viscosity polymer and high viscosity solution are electrospun to increase the diameter of fibers. Besides, melt-eletrospinning is introduced as an alternative candidate for improving the security of biomedical films, especially no poisonous solvent exists.

Abstract: semi-worsted; worsted and woolen spinning; high count; cashmere yarn; cotton & woolen equipment.

Abstract: In order to study the influences of fabric specification on vertical depth of honeycomb weaves, 11 kinds of honeycomb weaves fabric were designed in this paper by using different yarn linear density and weave repeat unit. The results show that the vertical depth of honeycomb weaves would increase as the yarn linear density increasing when the linear density was comparatively larger. With the increasing of weave repeat unit, vertical depth of honeycomb weaves is significantly increased. According to these results, 3D integrated vertical structure with honeycombed-core was designed, which used honeycomb weaves as the sandwich structure and plain weaves as the upside face and underside face. At the same time, the looming draft of this structure was drawn.

Abstract: Reducing yarn hairiness is the greatest ascendancy for compact spinning. Based on the test of fiber length distribution, the hairiness of compact yarn is simulated in order to study the rule of hairiness producing. The hairiness of different fineness yarn is simulated by changing the twist factory and the diameter of yarn and the hairiness of different kinds of yarns such as compact yarn and ring spinning yarn are simulated by changing the transition probability of fiber. The simulation data are in accordance with the experimental data. It can make prediction about yarn hairiness according to the fiber length distribution in order to guide production.

Abstract: Surface treatment of Ni-Ti fibers were processed by using various chemical solutions, including the hydrochloric acid, the mixture solvent of hydrofluoric-nitric acid and the solvent of potassium dichromate-vitriol. Scan electric microscopy (SEM) and fiber pull-out test were adopted to characterize the corrosive effect of the chemicals and the shear strength of the fiber/resin interface. The results showed that the surface of the alloy fiber is corroded most seriously after acid treatment with the mixture of hydrofluoric acid and concentrated nitrate. Tensile test result also shows that the maximum interfacial bonding strength is obtained by treatment with this acid. The effect of the cross-link agent in epoxy was also discussed.