气囊尺寸与充气率对充气服装面料热阻的影响OA

This study aims to investigate the effects of airbag size and inflation rate on the thermal resistance of inflatable garment fabrics.Using airbag size as the key variable,11 inflatable fabric specimens with different dimensions are designed and manufactured.The thermal resistance of each specimen is measured under standard environmental conditions at five inflation rates:0%,30%,50%,70%and 100%.To directly reflect the improvement in thermal insulation caused by the inflatable structure,the thermal resistance at 0%inflation rate is taken as the baseline,and the thermal resistance increment under different conditions is calculated and used as the core index for evaluating thermal insulation performance.On this basis,a prediction model involving airbag size,inflation rate and thermal resistance increment is established using multiple linear regression. The results show that the thermal resistance increment has a significantly positive correlation with the inflation rate.The thermal resistance increment increases obviously in the inflation rate range of 0%—70%,while the growth rate slows down significantly and gradually becomes saturated when the inflation rate exceeds 70%.Meanwhile,the influence of airbag size on thermal resistance increment is nonlinear rather than linear,showing a trend of increasing first and then decreasing.The established prediction model has high fitting accuracy with a determination coefficient R2 of 0.968,which can well reflect the quantitative relationship between variables and thermal resistance increment. Model derivation and statistical analysis further indicate that the thermal resistance increment reaches the maximum and the thermal insulation performance is optimal when the airbag area is controlled within the range of 55 cm2 to 68 cm2.From variable control and test analysis to model establishment,this study systematically reveals the variation mechanism of thermal resistance of inflatable fabrics under the combined effects of airbag size and inflation rate.The conclusions can provide a reliable quantitative reference and theoretical basis for the structural parameter optimization,thermal insulation improvement,and dynamic thermal management design of inflatable thermal-regulated garments.