Coolmax■纱线占比对织物接触冷感及湿感的影响

Influence of Coolmax■ yarn ratio on cold and wet sensation of fabric contact

为研究不同Coolmax■占比的织物与皮肤动态接触时对湿感觉的影响,结合差异阈限和阈上强度分析湿感觉的影响因素。搭建了双杆摩擦仪作为主观评价实验的主要仪器,可以控制摩擦速度、手臂间距。通过向7种织物添加定量的水,采用恒定刺激法让受试者对织物的湿感进行评分并判断强度;同时采用红外点温枪记录左右手臂的温度变化,计算皮肤温度下降率、湿感和冷感的差异阈值并分析阈上强度的心理物理关系。结果表明:含湿量对Coolmax■占比引起的冷感、湿感敏感性有一定影响;左臂对冷、湿的敏感性比右臂更强;低含湿状态下左右臂敏感性相差较大,高含湿状态下敏感性差异较小;人体可感知的冷和湿差异阈限分别为Coolmax■纱线占比相差11.9%和16.7%,冷感和湿感在两种含湿下均呈显著的正相关(p<0.05)。

In order to study the influence of different Coolmax■ fabrics on wet sensation in dynamic contact with skin,the mechanism and influencing factors of wet sensation are analyzed by combining the difference threshold and above threshold strength.A two-rod tribometer was built as the main instrument for subjective evaluation experiment,which could control the friction speed and arm distance.By adding a quantitative amount of water to 7 kinds of fabrics,the subjects were asked to rate the wetness of the fabrics and judge the strength by constant stimulation method.At the same time,infrared point temperature gun was used to record the temperature changes of the left and right arms and calculate the skin temperature drop rate.The results show that moisture content had a certain effect on cold and wet sensitivity caused by Coolmax■ ratio,the difference threshold of wet sensation and cold sensation and the psychophysical relationship of above threshold intensity were analyzed.The left arm was more sensitive to cold and wet than the right arm.The sensitivity of the left and right arms was significantly different under the condition of low humidity,while it was relatively small under the condition of high humidity.The difference thresholds of coolness and wetness perceived by human body were 11.9%and 16.7%of Coolmax■ yarn ratio,respectively.There was a significant positive correlation between subjective cold sensation and wet sensation(p<0.05).