Study On The Design And Performance Of Summer Combat Wooland Camouflage Fabric

Camouflage combat clothing is a kind of important military equipment, and the summer combat camouflage requires high mechanical and thermal-moisture comfort performances. The factors such as the choice of materials and the design of fabric, affect the fabric performance and the comfort in the process of the army combat directly. Therefore, in this paper, the high-strength polyester and high-strength polyamide what were optimized were blended with cotton respectively. The comprehensive performance and influencing factors of the blended fabric were analyzed systematically by using the modern mathematical model, and the better performance parameters of the fabric were got.For the design of yarns, seven kinds of blended ratio(0/100, 15/85, 30/70, 45/55, 60/40, 75/25, 100/0) of the polyester/ cotton and polyamide/ cotton yarns were designed respectively. Through analyzing various properties of yarns, and the results indicated that: For the evenness of yarns, besides the pure cotton’s evenness which was inferior slightly, the others yarns produced different effect along with the cotton content reduction: less than 40%, evenness of the polyester/cotton yarns were better with the increase of polyester content, and evenness of the polyamide/ cotton were worse along with the increase of polyamide content. For the strength of yarns, in the case of the same blending ratio, the strength of polyester/ cotton yarns was higher than that of polyamide/ cotton yarns and increased with the decreasing of cotton content. For the hygroscopicity of yarns, blended yarns were both decreased as the reduction of cotton content, and polyester/cotton yarn decrease faster slightly. Strand synthesis was determined as the critical twist 880T/m, by the tests of strength in different twists.For the design of fabric, orthogonal experiment analysis was used in the article. The experiment included four factors which were fabric weave, blended ratio, warp/weft density and the deviation, and theirs’ five levels. The tests of mechanical properties, thermal comfort and color fastness of fabrics were conducted for the fabric of orthogonal experiment. The results showed that, the color fastness of blended fabric could satisfy the specification requirements of woodland camouflage.Through the single index analysis and comprehensive analysis, the blended ratio had significant effect on mechanical properties, and the warp/weft density had significant effect on thermal-moisture comfort performance of fabric. The combination that made blended fabric comprehensive performance better were 2/2↗twill, polyester/cotton 75/25, warp-weft density 220×170 root/10 cm for polyester/cotton fabric, and 3/1↗twill stiffener, polyamide/cotton 75/25, warp-weft density 220×170 root/10 cm for polyamide/cotton fabric. All in all, twill, stiffener and smaller density were conducive to fabric performance.