Load Deformation Behavior of Wool at High Temperatures in Different Media

Abstract

Extension creep measurements were made in steam on wool fibers and yarns. Samples were subjected to the action of steam for different periods (0-60 sec) before being loaded and further steamed for 60 sec. It was found that pre- steaming markedly influenced the subsequent extension and creep in steam, and maxima in deformations were obtained at a pre-steaming time of ca. 30 sec. Thus, it is advantageous to pre-steam wool before loading it so that deformations are made when wool structure is in a state of increased segment mobility. This would result in large deformations and also use of smaller loads than required otherwise. It is also shown how the effectiveness of crosslinking treatments and other structural modifications can be assessed from such measurements.