Advanced Materials Research Vols. 750-752

Abstract: Carpets made with different blending ratio of bamboo and cotton fibers were treated with modified chitosan by padding process. The best performance of the carpets treated was obtained when the carpets were padding with 70 g /L modified chitosan solution under the roller pressure of 0.14 MPa, and cured at 160°C for 90 min. The antibacterial effect of the carpets treated with modified chitosan was characterized by the inhibition ratio to staphylococcus aureus, escherichia coli and Candida albicans and the lustrating ratio of mite. The treated carpets all showed broad-spectrum antimicrobial activity against gram-positive and gram-negative bacteria and fungi tested and modified chitosan is effective on anti mite.

Abstract: In order to protect the human body, developing ultraviolet protection fabric to avoid excessive ultraviolet radiation. The main factors influencing the solar ultraviolet radiation protective properties of anti-ultraviolet fabric are: the type of fiber, yarn properties, fabric structure parameters and fabric color, etc. In order to development anti-ultraviolet protective fabric, we change three parameters of fabric that is the color of textile fabrics, warp density and fabric structure. The yarn selected in the experiment is blended yarn of bamboo charcoal fiber/silk/tencel 30/30/40, and the color of the yarn is gray or black. The sodium copper chlorophyll of bamboo fiber is safety, excellent ultraviolet absorbent; the fabric warp density is designed for 240/10cm, 260/10cm, 280/10cm; fabric structure is designed for three kinds of weave, which is plain weave, compound twill and reinforced satin. Using YG(B)912E tester test the ultraviolet protection performance of the designed fabric specimen, recording its T(UVA) , T(UVB) and UPF. By the repeated orthogonal experiment method, determine which factor is significant to the performance of fabric with ultraviolet protection, and determine the optimal design scheme.

Abstract: The study on variable cashmere of pilling is a worldwide problem. The cashmeres pilling performance more complex due to the influence of subjective and objective factors in the environment, nutrition, genetics, rearing methods, and difficulties. Coiled fibers of variable cashmere sweater surface have a certain impact to the cashmere sweater pilling characteristics. The tests showed that the distribution of the coiled fiber height appear a single peak shape. The height of the coiled fiber is generally concentrated in the range of 1.5~1.8mm, and more pronounced decline as the number of fibers altitude increases. Especially in the range of 0~1 mm the more closer to the cashmere sweater surface, more coiled fiber existed. The tests showed that the parts exist in the coiled fibers pilling more serious, while pilling phenomenon appear on fewer parts, less present to quantity of coiled fibers and the height of the coiled fiber. Study on the height distribution of coil fibers is necessary.

Abstract: The production of sugar beet and maize as energy crops were investigated in saline alkali soil in China during three growing seasons. A dramatically decreases of yield of grains and starch of maize was found in both medium and heavy saline-alkali soil in the three years. But there were no decreases of yield of root and sucrose of sugar beet in medium saline-alkali soil and reduction of yield of root and sucrose of sugar beet in heavy medium saline-alkali were faintly. The results indicate that sugar beet is more tolerant to salt stress and maintains higher production of sugar may be a major bioethanol crops in saline-alkali soil in China.

Abstract: 1-MCP is an ethylene inhibitor which can effective reduce the grape respiration. SO₂ controllable-release packaging film is a self-made three-layer composite film which can release SO₂ fungicide intelligently. In this work, we investigated the combined effects of 1-MCP and controllable-release SO₂ packaging on grapes preservation under 5°C over 75 days. Grapes (C.V. Muscat Hamburg) were packed in three groups: controllable-release SO₂ packaging with and without a 1-MCP sachet, and LDPE film packaging as control. Then, the headspace gas concentration in the packaging was evaluated. The physiological properties of grapes, including weight loss, decay incidence, grape stem browning, titratable acidity (TA) and total soluble solids content were evaluated, respectively. The experimental results showed that grapes packed by controllable-release SO₂ packaging and 1-MCP achieved the best preservation effect. It decreased grapes stem browning and decay incidence, compared with the other treatments. The reason may be that it provided the grapes a suitable gas atmosphere, decreased the grape respiration rate and hence prolonged Muscat Hamburg grapes storage life.

Abstract: Pigment dyes are vastly used in dyeing and printing of all kinds of fibers. Ultrasonic energy and cationic modifying were applied in pigment dyeing. The results shown that both of cationic modify and ultrasonic energy can make for better dyeing effect. And the ultrasonic energys condition is 30 °C in 5 min.

Abstract: The weft knitted fabrics including plain, rib, rib and Milano with 31.25tex and 17.86tex wool yarns were taken as research objectives with a view to investigate the influence of fabric textures on pilling performance of wool sweaters. According to the GB/T4802.3-1997, the pilling performances of various samples were tested and studied. The results show that the fabric textures have great influences on pilling performance of wool sweaters. The anti-pilling performance is rib > rib > Milano >plain. The bigger the sinking depth is, the more serious the pilling phenomenon is. With larger liner density yarns, the anti-pilling performance of 1x1 ribs are better; With medium and less liner density yarns, the anti-pilling performance of 2 x 2 ribs are better.

Abstract: The effect of subsoiling on corn in dryland farming was discussed. The results showed that corn yields were higher increased compared subsoiling with traditional cultivation, especially in the rainfall less year. At same time, crop water consumption was not increased with the increased in output of the corn. The output of small amount of water increases actually. Water use efficiency was affected not only by the impact of water consumption, but also by the depth and cycles of subsoiling cultivating. Under certain conditions of the impact of the water consumption, the appropriate subsoiling cultivation cycle and depth could not significantly increase production, however, significantly increase water use efficiency.

Abstract: Aimed to improve the properties of Poplar, this study, taking phenol-formaldehyde resin (PF) and urea-formaldehyde resin (UF) as impregnation resin, probed the effect of the technology factors-vacuum time, solid content of resin, impregnation temperature and time on the impregnation results of Poplar, and the relationship between the resin and the wood was researched through infrared spectrum. The weight percent gain (WPG) of test-pieces increased with vacuum time extending, and WPG of the test-pieces were greatest when the solid content of resin was 30%, and the impregnation temperature was 25-30°C. when the impregnation time extended from 3 h to 9 h, WPG of the test-pieces presented increase trend which wasnt obvious. In this wood impregnated resin, the reaction between the resin and the hydroxy in wood formed ether bond binding, which proved that the resin and the wood occurred the chemical reaction.