A method for heat aging and evaluating thermal endurance of coated sleeving

Considerable data are now available relating to the thermal endurance of coated fabrics as a means of temperature classification for the purpose of end use. These data have been largely based on the method of ASTM 1830-61T employing curved electrodes. In order that similar information might be available for users of coated sleeving, an investigation was conducted to develop a method that would subject coated sleeving to thermal and mechanical stresses essentially similar to those employed for coated tapes, with the purpose of so equating these effects that differences in the geometry of the sleeving and tape specimens would not be a major factor in the final classification.