The invention relates to the technical field of recycling of waste spandex filaments, in particular to a regenerated high-elasticity
fiber prepared by recycling the waste spandex filaments, the waste spandex filaments are converted into high-performance materials such as regenerated
polyurethane through advanced technologies such as melting thermal degradation, resource recycling can be achieved, resource waste is reduced, and the regenerated high-elasticity
fiber is prepared. Spandex waste silk is treated by adopting a melting thermal degradation technology, and a high-quality regenerated
polyurethane raw material can be obtained by accurately controlling degradation conditions and parameters, so that a foundation is laid for subsequent preparation of high-performance fibers; secondly, in the preparation process of the modified
thermoplastic polyester elastomer and the modified filler component, a
silane coupling agent is adopted for
chemical modification treatment, so that not only can the surface performance of the material be improved, but also the interaction force between the materials can be enhanced, and the overall performance of the
fiber is improved; in the process of preparing the regenerated high-elasticity fiber, uniform mixing and full reaction of all the components can be ensured by adopting the technologies of internal mixing,
extrusion and the like, so that the regenerated fiber with excellent performance is prepared.