Development And Performance Study Of Filling Warmth Retention Of Composite Fabric

With having a breakthrough on structure and processing technology, a new kind of filling warmth-retention fabric has been made integratedly, which firstly weaves a filling-able micellar structure and then fills Down fibers into micelle. In addition, based on thermal-conductive principle, we study the effects of micellar structure on the warmth retention properties of down filling clothing and analyze the influences of the scale density, shape, thickness and filling mass of the micelle on the warmth property to determine the optimized filling micellar structure.In order to solve the penetrating problem of down out from fabric, this kind of structure filling warmth retention fabric is processed based on analysis of structure, thread count and arrangement density. For improving the fabric warmth retention performance, SiO2sol-gel technology has been used to finish fabric and the warmth-retention property is analyzed. Moreover, the down proof-performance has been tested for pretreated and treated fabrics, and the permeability, pilling resistance, stiffness properties have also been compared.The experimental results show that:with the same down filling mass, there is the best micellar scale density as3strips/(30cm×30cm) with microcell scale density increasing, when the thickness of sample, the volume of down fiber and air content are optimal. There is significant affection on the down filling fabric warmth preservation performance for micellar shape. With the same micellar density, warm-preservation performance of strip structure of the fabric is obviously superior to that of the grid structure. In30cm×30cm area, the density for3strips structure has optimal warm-preservation performance. The results show when the filling mass of down fibre is10.3g/(30cm×30cm) from fitting method, the warmth retention property is optimal for nonlinear relation with filling mass.In order to improve down fabric warm-reservation performance, SiO2sol-gel technology has been used to coat fabrics. Through orthogonal test, it shows that the heat-preservation performance is optimal when the ratio of EtOH/TEOS is set as15, ratio of H2O/TEOS as8and acid catalytic PH value as1.5, ammonia water PH value as7.0. The heat-preservation performance of coated fabrics increases significantly, descending time to specified temperature increasing30%, relative cooling speed dropping to0.283℃·min-1. It may be explained that the air convection within fabric decreases. So, warmth-retention property improves significantly and stiffness handle ascends with higher stiffness in warp direction compared with that of weft direction. The membrane flexibility reaches level3after SiO2sol-gel finishing, which penetrates to the fiber not only be in surface. The film has been coated to fabric by chemical bond, intermolecular force and adhesion. It is suitable for requirements of comfort ability and warm retention of wearable fabrics.Comprehensive analysis shows that weaving molding can improve down proof performance effectively, and SiO2sol-gel finishing can significantly improve its warmth-retention performance. It can meet requirement to be beautiful, comfortable and provide scientific basis for design and development fabric which is light-weight, excellent warmth retention and excellent down proof performance.