关键词: 氧化石墨烯, 改性聚酯, 纺丝工艺, 结晶干燥, 纺丝熔体, 上油, 拉伸变形

Abstract: Graphene oxide modified polyester fiber has a variety of functions beneficial to human health. This paper conducts in-depth study of the spinning technology of graphene oxide modified polyester from five aspects of crystallization and drying, spinning melt preparation, oiling, draw-texturing and tensile mechanical properties of products. The results show that: the crystallization and drying are implemented in accordance with the conventional polyester chip process. The preparation of the spinning melt is free from the influence of gas atmosphere. The temperature range is wide, but the residence time in the screw has a great influence on the viscosity drop. The amount of spinning oil is significantly higher than that of the conventional varieties. During the tensile deformation, there exist some problems, such as endless bottom unwinding and end breakage. The tensile mechanical properties of POY and DTY are relatively low, while the strength and breaking elongation of POY are obviously lower than those of conventional products, which are not conducive to stable post-processing. The research results are expected to provide a reference for the industrial growth of graphene oxide modified polyester.

Key words: graphene oxide, modified polyester, spinning process, crystallization and drying, spinning melt, oiling, draw-texturing