In this paper, the dynamic heat and moisture transmissions through fabrics are investigated, and their interaction manner is discussed. The essentials of the apparatus developed for measuring the amount of heat flow t...In this paper, the dynamic heat and moisture transmissions through fabrics are investigated, and their interaction manner is discussed. The essentials of the apparatus developed for measuring the amount of heat flow through fabrics during the whole period of simulated sweating action is reported. The registered heat flow flux in a continuous curve form covering the complete dry-wet-dry cycle of the sample is presented. Interpretation of the feature of the curve and indexes for characterizing the wearing comfort property of fabrics are suggested.展开更多
In this paper, the influence of processing parameters and powder binder content was studied and analysed on the properties of high loft nonwoven fabrics mainly using statistical analysis method. The relationship betwe...In this paper, the influence of processing parameters and powder binder content was studied and analysed on the properties of high loft nonwoven fabrics mainly using statistical analysis method. The relationship between the bulkiness and the warmth retention property was also tested. The analytical results reveal that the increase of the powder content, heating temperature and pressure will affect the tensile strength of nonwovens. Moreover, there are interactions between these parameters. The compression properties only change a little for a powder binder content of 15％—20％. However, with the increase of the heating temperature and pressure, the bulkiness and compression rate will reduce significantly. For the bulk density of high loft nonwoven fabrics, there exists a heat transter mechanism of air convection, but the higher the bulkiness of nonwovens, the larger the thickness and the better the warmth retention property of nonwoven fabrics.展开更多
Based on the Dynamic Dress Model which can simulate the body core temperature and skintemperature,as well as body sweating,this paper holds a further inquiry into the new method formeasuring heat resistance of fabrics...Based on the Dynamic Dress Model which can simulate the body core temperature and skintemperature,as well as body sweating,this paper holds a further inquiry into the new method formeasuring heat resistance of fabrics and moisture transmission in terms of“clo”unit andpermeability index“im”.It is found out that the values of Tex of warp and weft have the greatestinfluence on permeability index im and when the thread count increases to a certain limit,thepermeability index“im”is in direct proportion to thread count.展开更多
文摘In this paper, the dynamic heat and moisture transmissions through fabrics are investigated, and their interaction manner is discussed. The essentials of the apparatus developed for measuring the amount of heat flow through fabrics during the whole period of simulated sweating action is reported. The registered heat flow flux in a continuous curve form covering the complete dry-wet-dry cycle of the sample is presented. Interpretation of the feature of the curve and indexes for characterizing the wearing comfort property of fabrics are suggested.
文摘In this paper, the influence of processing parameters and powder binder content was studied and analysed on the properties of high loft nonwoven fabrics mainly using statistical analysis method. The relationship between the bulkiness and the warmth retention property was also tested. The analytical results reveal that the increase of the powder content, heating temperature and pressure will affect the tensile strength of nonwovens. Moreover, there are interactions between these parameters. The compression properties only change a little for a powder binder content of 15％—20％. However, with the increase of the heating temperature and pressure, the bulkiness and compression rate will reduce significantly. For the bulk density of high loft nonwoven fabrics, there exists a heat transter mechanism of air convection, but the higher the bulkiness of nonwovens, the larger the thickness and the better the warmth retention property of nonwoven fabrics.
文摘Based on the Dynamic Dress Model which can simulate the body core temperature and skintemperature,as well as body sweating,this paper holds a further inquiry into the new method formeasuring heat resistance of fabrics and moisture transmission in terms of“clo”unit andpermeability index“im”.It is found out that the values of Tex of warp and weft have the greatestinfluence on permeability index im and when the thread count increases to a certain limit,thepermeability index“im”is in direct proportion to thread count.
