织物中液态水传输与快干行为表征.

The liquid water transport and rapid drying behavior in fabrics usually referred to as moisture absorption and rapid drying means that when the human body generates a lot of sweat during intense exercise sweat can be quickly absorbed and transmitted to the outer surface of fabrics to quickly volatilize so that the body can maintain a dry and comfortable function. The behavior directly affects the human wearing comfort and health status. According to the current development trend of functional fabrics moisture absorption and rapid drying has become a basic requirement for underwear sports medical and clothing in other fields and has bright prospects for development. Combined with the exploration of related fields by researchers it can be seen that the liquid water transport and rapid drying in fabrics has become a research hotspot which makes the law of moisture absorption and rapid drying properties increasingly clear and the characterization methods are increasingly accurate and diversified. However as the liquid water transport and rapid drying in fabrics is affected by many factors it is necessary to strengthen the guidance of the research results for the actual product development. To keep the human body in a comfortable state when people sweat during exercise the study took polyester woven fabrics as the research object to characterize the liquid water transport and rapid drying behavior in fabrics. Firstly the drip diffusion test and water evaporation rate test of 10 kinds of fabrics with different specifications were carried out with the help of image processing technology and the data of water transport process were accurately obtained. Then the indexes of liquid water transport and rapid drying in fabrics were put forward such as the drip diffusion time maximum transmission time maximum transmission area maximum transmission span in the warp and weft direction and evaporation rate and the moisture absorption and rapid drying performance of fabrics was analyzed. Finally the factors influencing the moisture absorption and rapid drying performance were analyzed by multiple regression method. The results show that liquid water transport and rapid drying in fabrics undergo four stages the initial stage the weight loss increasing stage the stable stage and the weight loss decreasing stage. The appearance of the four stages is related to structural factors such as fabric structure fabric thickness yarn linear density yarn arrangement density and mass per square meter of fabrics. The liquid water transport in fabrics is first affected by the fabric thickness which will weaken the surface spreading of liquid water and is then affected by the yarn linear density which affects the evaporation of liquid water spreading by affecting the surface pores of fabrics. The warp density and weft density are influenced by matching with the thread density of the yarn. This study reveals the transport behavior of liquid water by observing the change of transport domain in fabrics thus proposing the corresponding evaluation index system and analyzing complex relationship between liquid water transport and fabric structure by multiple regression method. The method of characterizing liquid water transport and rapid drying behavior in this paper provides a new solution for clothing comfort and has important guiding significance for the research and development of high-quality sportswear fabrics. [ABSTRACT FROM AUTHOR]