Synchronized Falling-Film Devolatilization and Viscosity Enhancement for Continuous Production of High-Strength PA 6 Industrial Yarn
Feng Gao,
Ke Liu,
Yongjun Wang
et al.
Abstract:Direct spinning of polyamide 6 (PA 6) fibers, traditionally impeded by the presence of approximately 10% residual monomer and oligomers in the polymerized form, has been made feasible through our innovative approach. Current extraction methods predominantly employ hot water to extract monomer and oligomers. However, this approach is characterized by time-consuming procedures, high energy consumption, and substantial water usage. Therefore, in this study, a straightforward falling-film devolatilization method i… Show more
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