CONTACT RESISTANCE BETWEEN A METAL CYLINDER AND FABRICS DURING MOISTURE SORPTION AND DESORPTION PROCESSES

Abstract

Attention was paid to the clingy properties of wet fabrics, which were closely related to discomfortable contact feeling. The contact resistances were measured between a metal cylinder and the hanged fabrics during moisture sorption and desorption processes by means of the changes in cylinder temperture or ambient temperature and humidity. The clingy force by water was discucssed, and the following results were obtained under this experimental condition:
(1) The contact resistance decreased during moisture sorption process and increased during moisture desorption process. A stickslip phenomenon was observeed, too.
(2) The change in the contact resistance reached the maximum value of 1.5g per the apparent contact area of 5.61cm².
(3) It was assumed that the apparent clingy force by capillary water reached the value of the order of 10^-2g/cm².
(3) The change in the contact resistance was large for hygroscopic and wettable fabrics.