温度和湿度对人体皮肤摩擦特性的影响

A Study of the Influence of Temperature and Humidity on Skin Friction Property

基于研究温度和湿度对人体皮肤摩擦特性的影响及其机理的目的,使用摩擦磨损试验机、红外温度仪和皮肤湿度计对4名志愿者前臂掌侧皮肤的摩擦系数、温度和湿度进行测试。结果表明:皮肤表面温度变化影响皮肤的流动性和延展性,表现在随着皮肤温度的降低,摩擦系数和法向位移呈现先降低后不变的趋势;形变摩擦和黏着摩擦是主要摩擦机理。皮肤表面湿度显著影响皮肤的摩擦特性,随着皮肤湿度的增大,摩擦系数呈增大趋势,在皮肤湿度达到42%左右时,摩擦系数增至1.0以上;弯月面效应是潮湿皮肤表面具有高的摩擦系数的主要原因。

To investigate the influence of temperature and humidity on skin friction property and to unveil the mechanism therein involved, a test of friction coefficient for four volunteers was carried out on a multi-specimen friction tester. The temperature and humidity of skin were measured with infrared temperature instrument and dermohygrometer. The results showed that the fluidity and ductility of skin were affected by the change of skin temperature. The skin temperature decreasing friction coefficient and the normal displacement decreased first, and then remained unchanged, deformation friction and adhesive friction being the major underlying mechanism. Humidity significantly affected the skin friction properties. The friction coefficient increased with the increasing of humidity. When skin humidity reached to 42% or so, the friction coefficient increased to 1.0 and higher. Meniscus effect was noted to be the major cause of moist skin surface with high friction coefficient.