Abstract
Since, in thermal shrinkage of pure PVC-fiber, the net deformation would be the difference between the true thermal shrinking and creep deformation owing to hanged load which was used to make the sample fiber straight and length-measurable, the shrinkage curves involving maximum point could be obtained sometimes according to experimental conditions.
Now, several correlations about this maximum point with hanged load, S2, shrinking temperature, T, and multiple drawn ratio, L, can be derived as follows; where, tm is elapsed time to the maximum shrinkage point, and γm and γ_??_ are the shrinking deformation at the maximum point and free shrinking deformation without any load, respectively.
