Advanced Materials Research Vols. 821-822

Abstract: In order to study the effect of humidity on nep movement in electrostatic field, a self-made experiment instrument was made. By this instrument, under the several kinds of different humidity, fiber neps and SCNs (seed coat neps) gotten randomly from card sliver or raw cotton were laid on down-pole-plate and then the up-pole-plate voltage was increased gradually. The voltages when the neps leaving the down-pole-plate were recorded. With statistical method, the take-off voltage averages of different kinds of nep under different humidity were calculated. It can be concluded that charging time of neps decreases largely and the take-off voltages of neps also reduce with the increase of air humidity in certain range.

Abstract: In order to characterize cotton fiber length distribution, the probability density function with parameters were used to describe the fiber length frequency histograms. In this paper, four cotton fiber samples (bale, carded sliver, combed sliver and finisher sliver) were selected, and the fiber histograms by weight were measured by USTER AFIS Pro. Two- and three-component mixed Weibull distributions were adopted by us to fit these histograms, and the relevant fiber length measures were calculated. The results showed that mixed model could well describe the entire fiber length distribution of different cotton fiber samples, and two-component mixed Weibull distribution, rather than three-component one, fitted these histograms better.

Abstract: a new method for rapid detection of formaldehyde has been developed in this research. Under this method, the formaldehyde solution has condensation reaction with 4-amino-3-hydrazine-5-mercapto-1,2,4-triazole (AHMT) and is oxidized by potassium periodate to produce purple chemical compounds. The method for rapid detection of the formaldehyde content in textiles has been optimized after researching primary influencing factors and considering the specimen extraction effect in GB/T 2912.1-2009.This method is sensitive, accurate and fast, taking only 12.5min, 9.6 times faster than the method provided in GB/T 2912.1-2009.

Abstract: Fractal polyester has distorted gene of similar nature fiber that can produce nature distort by digital fractal enlargement. Fractal polyester/cotton blended yarn is made of nature cotton fiber and a little polyester filament with fractal structure by doubling and twisting machine. The fractal polyester/cotton blended fabric characterizes super nature fabric that the inner is fractal polyester filament with good shape retention, while the outside layer is cotton fiber. The study discussed spinning and weaving technology of fractal polyester/cotton blended fabric. The key technology of spinning is twisting process of cotton yarn and fractal polyester filament, which evenly adjusts two kinds of yarn tension. In order to stabilize the doubling yarn effect with "Dragon Chanzhu", yarn steaming technology is necessary, which steaming time are 40 minutes, steaming temperature is at 110°C-140 °C. Sizing and Weaving processes ensure fabric quality and productive efficiency. So choose "small tension, low elongation, good coating property, pressing yarn hairiness" as sizing process route process route, and choose "early shed timing, high back beam, large shed opening " as weaving process.

Abstract: Most of UV protection textiles are made of chemical fibers, and a large part of them have poor air permeability and moisture permeability, which influences the wearing comfort. This work blended polyester and linen to produce a new kind of knitted fabric and tested the fabric structures, air permeability, moisture permeability and UV value. Excel and SPSS were used to compare the properties of new knitted fabrics and find out the relationships between the constructional parameters and properties. The results indicated that there are regression equations between constructional parameters and properties and got a new kind of UV protection fabric with good air permeability and moisture permeability.

Abstract: The common swimsuit fabrics on the market are mainly polyamide/ spandex, polyester/ spandex blended at present, which have some defects such as easy deformation, short service life etc. Sorona is a new kind of biomass fiber with low carbon and environmental protection, which has more superior performances than spandex that could ensure the fabric elastic lasting and stable. The paper uses seamless technology to weave new polyamide/ Sorona/ spandex swimsuit fabric, and compare with the ordinary polyamide/ spandex, polyester/ spandex fabric, by testing the specimen of tensile elasticity, elastic recovery and plasticity deformation rate, burst strength, and many other swimsuit related performance metrics. Come to conclusions: polyamide/ Sorona/ spandex fabric with superior elasticity, good comprehensive performance of elastic recovery and plastic deformation rate, excellent burst resistant performance , small hygroscopicity and fine permeability is suitable for swimsuit fabrics, providing reference for the development of high comfort seamless swimwear fabric.

Abstract: Use of patent intelligence analysis method,through Patent literature on the measurement of research in the Protective textile sector,find out the status of applications of the patented technology in this fieldR&D situation and Principal applicant,In order for related technical personnel and scientific and technological management personnel to provide a scientific basis and useful reference.

Abstract: To research relation of card sliver quality and yarn quality, influence degree of card sliver parameters on yarn quality was analyzed through gray incidence analyses method and least square method, the concrete formula was got, it is feasible for production to adjust carding processing in time, enhance yarn quality stably.

Abstract: In the experiments, we have used cotton plain-woven fabrics with same warp and weft density as substrate and aniline/o-Phenylenediamine as the conductive material, in-situ polymerization and deposition as polymerization. We used single factor analysis to investigate the influence on the conductivity of the fabric, then got the better technological conditions with concentration of aniline/o-Phenylenediamine at 1mol/L, concentration of hydrochloric acid at 1mol/l, concentration of ammonium persulfate at 0.5mol/l, reaction temperature at 5°C and ultrasonic power density at 0.626 W/cm². Under this conditions, the surface resistance of the conductive fabric can be below 100Ω.

Abstract: Substances extracted from the scutellaria based on the boiled were introduced to make the cotton fabrics achieve a good antibacterial properties. Specifically, the orthogonal experiment was designed based on four factors such as the concentration of extraction (compared with the original extraction), temperature, pH and mordant dyeing methods. It is proved that the cotton fabrics in such conditions, for instance, the scutellaria concentration of extraction of 80%, pH value of 9, at 80°C and the media reprocessing, can acquire a good antibacterial properties, and the bacillus subtilis antibacterial rate can reach 86.69%. Simultaneously, the rate of antibacterial against escherichia coli can reach 74.77%. It can still keep a good antibacterial properties after three times washing and ten times washing, and the bacillus subtilis inhibition rate is approximately 84.73% and 72.37% respectively, and the E. coli antibacterial rate is approximately 70.78% and 64.27% respectively.