Applied Mechanics and Materials Vols. 633-634

Abstract: In this paper, squeeze casting process was adopted to produce the Fe-Cr-Ni preform reinforced Al-Si-Cu-Ni-Mg aluminum composite. And then, T6 heat treatment was conducted to enhance the composite’s performance. After which, isothermal compression tests in temperature range of 473-773 K at an interval of 150 K and strain rate range from 0.001 to 10 s^-1 were carried out on Gleeble 3500 thermo-mechanical simulation machine. It is found that, for a specific strain rate, the flow stress decreases markedly with temperature increases. And for a fixed temperature, the flow stress generally increases as the strain rate increases. Based on the experimental true stress-true strain data, the Arrhenius type model was established.

Abstract: This paper chooses polyamide/spandex,polyester/spandex as raw material with different textile parameters to weave 8 fabrics, researches fabrics' impact resistance, elasticity, wear resistance and other properties, uses fuzzy comprehensive evaluation to analysis the comprehensive performance of 8 fabrics, confirms a kind of motorcycle clothing fabric with good impact resistance and wear ability finally , which provides a theoretical basis and practical reference for designing protective clothing with impact resistance in the future.

Abstract: In order to weave the double face jacquard fabric with pattern effect at the same time increasing warming function of the jacquard, this paper added far infrared polyester as extra weft to stitch the face and back layers. Combining the basic structure design of the double face jacquard fabric, three-layer weave with extra weft stitching could be done. By this method extra weft could be hidden in the form of surface layer floats covering stitching intersection points so as to have heat retention effect and unique appearance of reversible jacquard isn’t impacted. In addition, the weft yarns used to produce the face and back layers were silk and wool, and far infrared polyester was hidden in the inside of the fabric as extra weft which ensured the jacquard being good for skin. Empirical results show that the method achieves good decorative property and warming function of the double face jacquard fabric with pattern effect, and provides reference and direction for the design of digital jacquard fabric.

Abstract: PTT material is suitable for shaping clothing because of its excellent shaping and crease recovery performance, but if as underwear, the wearability of PTT material is being questioned. Based on the L₉(3⁴) orthogonal array design, two kinds of samples were kitted utilizing nylon core-spun yarn as ground yarn PTT/nylon filament and Polyester/nylon filament as face yarn respectively, mixed proportion and structure were controlled in the sample design. Test 6 basic wearabilities of samples, the wearabilities of samples were investigated by fuzzy mathematical analysis. The results of this research can be a good reference of shape wear fabric selection.

Abstract: SEM and Automated Surface Area & Pore Size Analyzer were used to characterize surface morphology and specific surface area and the pore size distribution of fibers. The results showed that specific surface area and pore size distribution increase after ultrasonication. The ash content of the composites of ultrasonic treated fiber is larger than the untreated fiber, and the magnetic properties show a good superparamagnetic behavior.

Abstract: In order to make the jacquard fiber hanging fabric to achieve static and dynamic design gradually transform shining shows at the same time, we adopt the interweaves of optical fibers and common yams. By designing six double weft fabric structure of four groups of optical fibers and two groups of common yarns, some functions like “image overlying”, “colour replacing” and “protecting colour” in weave CAD are used in order to overlie the drafting of a static shining pattern formed with 2 sets of optical fiber, a transform shining pattern composed of 2 sets of optical fiber and a scene-like decorative pattern formed with a set of conventional weft. Then notation file is prepared by designing the weft row, main paper clip, assistant needle and sample card. Next, use jacquard weaving machine to make 6 double weft optical fiber jacquard fabric. Finally, by the utilization of the light of LED , the design of electronic circuit,to get a pattern can be controlled shining, static and dynamic display of optical fiber as wall-mounted scene jacquard fabric.

Abstract: This document mainly studied the effect of Sorona fiber content and fabric structure on the wearingcharacteristicsofSoronacottonblendedseamlessknittedfabric. In the experiment, three different kinds of stitch structures and ratios of Sorona/cotton were designed and nine Sorona/cotton blended seamless knitted fabrics were knitted. And then, breaking elongation, rigid flexible, crease recovery, pilling resistance, hygroscopicity and air permeability of the nine seamless knitted fabrics were tested and analyzed. The result showed that with the increasing of Sorona fiber content, the properties of Breaking elongation, rigid flexible, crease recovery and pilling resistance of the Sorona/cotton blended seamless knitted fabrics had and a certain of improvement, however the hygroscopicity and air permeability decreased.

Abstract: Outlast fiber is a kind of thermostat fiber that could absorb and release heat according to the changed environment temperature. It has been widely used in thermostat textiles. The outlast/viscose blended yarn we researched in this paper will be used in apparel fabric. As the demand in durability and comfort property of apparel fabric, we characterized the yarn by regain, tensile and damage properties, elastic property, differential scanning calorimetry (DSC) and thermo gravimetric analysis (TGA). The experiment results show that the outlast/viscose blended yarns have good hydroscopicity, elastic property, temperature adjusting performance and thermal stability.

Abstract: The bis-type quaternary ammonium salts (bis-QAC) with hydroxyl group in their molecules, 4,5-Bis (alkyl dimethyl ammonium bromide)-1-pentanol were immobilized on cotton fiber to prepare an antibacterial cotton fibers (called as Ws) by using a coupling agent, tetramethoxysilane. The antibacterial characteristics of Ws were investigated. 4,5-Bis (alkyl dimethyl ammonium bromide)-1-pentanol chemically bonded to the surface of cotton fiber exhibited antimicrobial activity against a broad range of microorganism. Their antibacterial activity was not easily influenced by environmental pH and temperature, and could not be removed from the surface of wool by repeated washing.

Abstract: Acetate fiber arouses a great interest by the people with a soft silk feel, bright color, weather resistant and good drapability. Acetate fiber is obtained by reacting cellulose with glacial acetic acid in the presence of acetic anhydride a trace of sulfuric acid in refluxing methylene chloride. The ester group (-COO-) in acetate fiber is converted to hydroxyl group (–OH) after hydrolysis in sodium hydroxide aqueous solution. This research explores the hydrolization of acetate fiber in sodium hydroxide solution and characterization used staining method with reactive dyes. The optimum technology of hydrolysis is sodium hydroxide mass fraction is 6g/L, the time of hydrolysis is 30min at the room temperature. The strength of the hydrolyzed fiber is decline and the moisture regain is increased compared with the acetate fiber.