Non-isothermal viscoelastic melt spinning with stress-induced crystallization: numerical simulation and parametric analysis

This paper considers a model of melt spinning with stress-induced crystallization, where the melt uses the Phan Thien-Tanner model, and the solid adopts the rubber elastic model. We design a computationally efficient algorithm for solving the model. The temperature, radius, and birefringence profile in low-speed and high-speed spun PET fibers were predicted and compared with the published experimental data. The simulation results are consistent with the experimental data from the literature. Then a parametric analysis is conducted to investigate the effects of operating conditions on the spinning dynamics and reveal the relationship between the operating conditions and the final properties. The change of take-up speed has a significant influence on the crystallinity and birefringence of the fiber.

Automated summary

This paper considers a model of melt spinning with stress-induced crystallization and proposes a computationally efficient algorithm for solving the model. The simulation results are consistent with the experimental data, and a parametric analysis reveals the effects of operating conditions on spinning dynamics and final properties.