| Aromatic polyamide fiber——is one of high temperature high performance fibers, famous for its Low density, high strength, high modulus.It is used widely becaous of its varieties high practical value and volume production, which is of one of high-performance fiber. Because polyethylene terephthalate fiber phenyleneterephthalamide is a very important military strategic significance, so long monopolized by a few large industrial countries and the high technical barriers. In the face of strong market demand, our country compared to other countries later on Kevlar research, and now need to continue to accelerate the pace of research. Domestic protective equipment currently exists many problems, such as:low-tech, the shortage of investment funds, the narrow scope of the study, of which coal miners clothing particularly unsatisfactory. Therefore, the implementation of labor protection standards issued improve workwear fabric mechanical properties, improved administration features imperative.Protective equipment from home and abroad related industries existing results for underground miners active defects ordinary work clothes, protective clothing made of new design requirements and functional objectives.The issue of raw materials by the DuPont Experimental low temperature solution polycondensation and domestic production Kevlar49Upland. Through a series of spinning, weaving, and various performance testing analysis, informed conclusion was taking performance fabrics and functional performance is affected by many factors.We used Borda count method, one of Fuzzy Decision opinions centralized methods, to optimize different proportions of Kevlar/Cotton blended yarn, then according to the quality of yarn sorted blended yarn. Experimental results show that the more Kevlar49fiber content, the better the overall performance blended presentation. Considering the degree of matching equipment, raw materials costs, the effect of economic and spinning, we choiced blended fibers contains30percent Kevlar49, as raw material for the knitting process.In this study, we designed four different weft yarn conductive composite fabric by the interval method, the protective clothing is designed with a durable anti-static function finally. There are two each weft fabric:Cotton twines Tw1and three-ply Tw2, which contains organic conductive filament. Two fabrics warp are Cotton twine TJi and the same thickness of30/70Kevlar49/Cotton blend double-strand TJ2.we chose the Single factor experiment as a measurement for the mechanical properties and tissue protective properties of four objects. Based sorting Cotton fabric and Kevlar49/Cotton blended fabric comprehensive performance, the results show that:Performance Kevlar49/Cotton blended fabric is indeed superior to Cotton fabric, And with the interval into the root of the number, the more conductive yarn, the better excellent performance blended different weft fabric.According to the results of comprehensive performance analysised by fuzzy decision and cluster, Three Kevlar49/Cotton blended fabric with different weft high-strength, wear-resistant, anti-static and other excellent properties.In summary, the experiment accounted of economic and production costs of Kevlar49/Cotton blended fabric with weft different, in the same production environment, technical proficiency and other conditions,30/70Kevlar49/Cotton blended yarn are cheaper by comparison to the same size Cotton textiles. The warp yarn was27.9×2tex Kevlar49/Cotton blended yarn, Double-strand Cotton and conductive fabric constituted weft yarn of woven fabrics. We ensure that a way to weave weft as an interval of eight Cotton yarn between blended conductive yarn. Finally, we obtained that the blended woven fabrics are most suitable to develop into protective clothing mines.The fabric meets the requirements of high-risk industries for protective equipment. It not only has good market prospects, but also has significant social and economic benefits. |
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