| In this dissertation we studied the influence of different blended fiber, yarn construction, spinning methods on the anti-fuzzing and pilling property of soybean fabric. The aim was to find the most effective way to improve the anti-fuzzing and pilling property of soybean fabric. Firstly, three kinds of soybean yarn were spun by different spinning style. Secondly, PTT fiber and low melt point bonding fiber were blended with soybean fiber separately to enhance the fiber adhesive force of blended yarn.Soybean fiber has advantages of both natural fiber and chemical fiber. Its fabric had lofty and smooth handle, subdued luster, excellent moisture vapor transmission, drape and so on. However, soybean protein fabric has serious fuzzing and pilling problems, which restrict its further development in the market. So it is very important to improve the anti-fuzzing and pilling performance.First, tensile property was test, the relationship between blended content, yarn construction and above performance was studied. The results were listed as followed: Tensile property. Tensile strength of compact yarn was far higher than sirospun yarn and ringspun yarn. The elongation at break of compact yarn was the same as that of sirospun yarn, which was higher than ring spun yarn. The strength of sirospun blended yarn was higer than ring spun blended yarn under the same ratio, and both of them were lower than that of the soybean uni-material yarn. For ring spun system, the tensile strength came to the lowest when the ratio was 50/50. The tensile property of soybean/LMPdidn't change so much when ratio was changed.Next, the yarn hairiness and reproduce hairiness were tested. Through analyses and contrast, the result showed: (l)in comparison with the conventional ring spinning method and siro spinning, compact process could produce yam with higher quality from a given raw material. It possessed the lowest level of long hairiness percentage among the three kinds of yam, which was 2.4%. Sirospun yam had much less hairiness than ring spun yarn. Compact spun yam and sirospun yarn had fine attrition resistant, after 200 times attrition, only a few fiber stood out of the yarn body, almost the same as the one before rubbed. However, most of surface hairiness of ring yam split out from the yarn body and tuned to be the long one. (2)In ring spinning system, the 2-3mm hairiness of soybean/PTT blended yam increased gradually with the increasing percentage of soybean protein fiber. It suggested that the hairiness can be reduced when blended soybean with PTT fiber. In sirospun process, the percent of PTT fiber did not influenced so much, which suggested the construction of sirospun contribute to reducing hairiness and reproduce hairiness. (3) The hairiness of soybean/low melt point fiber blended yarn increased a bit with the increasing percentage of soybean protein fiber.The factors affecting fabric pilling properties were discussed by analyzing the five conventional standard pilling photographs that characterizes pilling. Pilling resistant performance of the compact spun fabric was the best, whose pilling grade was 4 and that of ring spun fabric was the worst, as far as soybean un-material fabric was concerned. Pilling resistant performance of fabric would be better, when the soybean fiber was blended with PTT. Pilling grade increased gradually with increasing percent of PTT fiber, both in sirospun method and ringspun method. The pilling grade of soybean/LMP also increased with increasing percent of LMP fiber. As for the thermal treatment, 112°C was more preferable than 118°C.The objective hand evaluation, including the tensile, bending,compression, formability and surface character were investigated.
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