*3.6. Reprocessing Performance*

After being placed in a constant temperature and humidity box for 24 h, the cut dumbbell-shaped spline was used for the tensile test. Figure 8 provides the stress-strain curve of WPU2 film and WPU2 film after reprocessing. The tensile strength of WPU2 film after reprocessing was 3.39 MPa, compared with the original spline, its tensile strength increased and the elongation at break reduced, which indicated that the film had a good reprocessing performance.

**Figure 8.** Tensile properties of the reprocessed WPU2 film.
