Analysis On The Wearing Performance Of Acidproof And Breathable Nanocomposite Fabrics

Acidproof and breathable nanocomposite fabric is a new kind of nano-composite fabric with different properties by means of electrospinning,which showed good acidproof and breathable properties.However,most of the research on acid proof and moisture permeable fabrics focuses on the functional development of such fabrics,while the wearability of such nanocomposite fabrics were rarely studied.In order to objectively evaluate the performance of acidproof and breathable nanocomposite fabric,this paper firstly focused on the preparation of the modified fluoroelastomer and modified fluoroelastomer based acidproof and breathable nanocomposite fabrics.The chemical structure,thermal stability,surface morphology and wettability,especially the structure stability was evaluated by FTIR,NMR,TG and SEM,etc.Secondly,the air permeability,moisture permeability and contact angle of poly-cotton fabric,fluorine-containing polyurethane acidproof and breathable nanocomposite fabric and traditional acidproof and breathable impregnated fabric were tested.The FAST system was used to test 18 mechanical properties of these three kinds of fabrics under low load,such as compression,bending,stretching and shearing properties,and the differences among these three fabric styles were analyzed.Finally,based on the test data of FAST system of 24 groups of acidproof and breathable nanocomposite fabrics,the fabric style of acidproof and breathable nanocomposite fabrics were objectively evaluated by principal factor analysis.The specific results were showed as follows:?1?FTIR and NMR tests showed that the diphenylmethane diisocyanate was reacted well with fluoroelastomer,and the modified fluoroelastomer was successfully synthesized.TG test showed that the modified fluoroelastomer has good thermal stability for that no weight loss was observed before 278?.In addition,the water contact angle of modified fluoroelastomer was better than the pure fluoroelastomer,up to 128°.Finally,the dimension and morphology of the modified fluoroelastomer nanocomposite fabric did not change significantly within a week,indicating that the structural stability of the nanocomposite fabric was significantly improved.?2?The PU/FPU acidproof and breathable nanocomposite fabric showed good strength,breathable and acidproof properties,for the air permeability was 186.2 mm/s,the moisture permeability was 9914 g/m²·24 h,and the water,sulfuric acid contact angle reach to 140°and 135°,respectively.Comparing with the PET/Cotten based fabric,the thickness of PU/FPU nanocomposite fabrics fell by about 3.3%,the warp bending length decreased by 2.5%,the weft bending length increased by 1.4%,and the warp bending rigidity decreased by 5.2%,The weft bending rigidity increased by 6.5%,which indicated that the acidproof and breathable nanocomposite fabric has better comprehensive performance than the commercial acidproof and breathable impregnated fabrics under low load.?3?According to the principal factor analysis method,it was concluded that the cumulative contribution rate of the first six factors can reach 82.85%,which including fabric stretch shearing factor Z₁,fabric weft bending factor Z₂,fabric warp bending factor Z₃,fabric fluffy factor Z₄,fabric weft forming factor Z₅,fabric warp forming factor Z₆,all of these six common factors can explain the 18 performance test indexes of the FAST test of acidproof and breathable nanocomposite fabric.