Important Factors Affecting Clothing Type Performance: Clothing Fabrics

　　 clothing In the process of wearing, cleaning and maintaining, it is easy to be subjected to various external forces such as bending, twisting, stretching, compression and so on. If these deformations can not be restored or only a small part of them recover, they will affect the performance of the clothing. The important factor affecting the clothing type performance is the fabric. Therefore, it is of great importance to evaluate the fabric type performance.

At present, the evaluation Clothing fabric The testing of shape retention performance mainly involves wrinkle resistance and arching performance. These methods evaluate fabric shape retention performance by testing indirect indicators such as fabric wrinkle resistance and arches, but at present, there is less research on the fabric shape performance in tensile properties, and the fabric slips frequently during stretching process, which seriously affects the appearance of fabrics. At present, aiming at aircraft Fabric yarn The study of slip performance is mainly oriented to process control in the production process, while the fabric often suffers from external forces and yarn slippage during its use. The quantitative discussion of its regularity is of great significance for improving the fabric type performance.

During the stretching process, the yarn deformation involves the elongation of the yarn in the stretching direction and the slip property between the vertical yarn. We have made an exploratory study on the slipping properties of the fabric under the fixed tension effect, hoping to quantitatively evaluate the shape retention performance of the garment under tension.

We use 16.7tex polyester DTY, 16.7tex polyester DTY+2.2tex spandex, 17tex cotton yarn three kinds of yarn, fixed fabric weft density, in the SL8900 automatic sample loom, design three kinds of different fabric. Using the desktop double column electronic universal testing machine, the speed of the fabric is set to 100mm/min, the width of the fabric is 5cm, the length is 20cm, the drawing clamping distance is 100mm, and the elongation at elongation is 10%. The samples were put into the constant temperature and humidity laboratory, the temperature was 20 degrees, the relative humidity was 65%, and the humidity was 48h. The digital camera is placed on the platform, and the focal length of the lens is away from the fabric 40cm. It ensures that after the fabric is stretched, the lens is aligned to the middle part of the stretched fabric, and a square ruler is placed on the fabric for calculation. Fabric Actual size. We chose 100 yarns to test the slip rate.

The results show that the warp slipping rate of all fabric yarns is greater than that of the weft slips. The main reason is that the warp has greater tensile strength in weaving, less yarn buckling and less friction. At the same time, when the warp density of fabric is larger than that of the weft yarn, the number of yarns of the contact yarns is less than that of the weft when the warp slips.

From the fabric organization, under the same conditions, the slipping rate of plain weft yarn is the smallest, and the slipping rate of warp and weft yarn is the largest, and the twill is centered. This is mainly due to the most weaving times of weft and weft yarns, and the friction force of warp and weft yarn is increased.

Judging from fabric materials, Cotton fabric The yarn slipping rate is the lowest, polyester fabric is in the middle, and polyester / ammonia fabric has the largest slip ratio. Because the friction force of cotton fiber is the largest, the yarn slips, resulting in smaller slip ratio of warp and weft yarn, and polyester / ammonia fabric due to the effect of spandex, the shrinkage of the fabric is larger and the relative slip between yarns is smaller, so the friction force is not large, which leads to the maximum slip ratio of warp and weft yarn.

Therefore, under the condition of fixed elongation, the slipping ratio of warp and weft yarn is close to that of fixed elongation, but its value is related to fabric raw materials, organization and other factors. The more fabric weft interweaves, the more weft interweaves. yarn The smaller the slip rate, the greater the friction force of fabric material, and the smaller the slip rate. Under the same condition, the slipping ratio of warp yarn is more than zonal. However, we can not discuss the influence of fabric warp and weft yarn witness on its slip performance. At the same time, the selection of raw materials is too little, and the relationship between yarn slip ratio and fabric structure can not be comprehensively discussed.