莱赛尔纤维纺丝溶液稳定剂研究进展  

Research progress on stabilizers for lyocell fiber spinning solution

作　　者：康国培 王梓 杨香莲 马峰刚 周明吉 袁彬 KANG Guopei;WANG Zi;YANG Xianglian;MA Fenggang;ZHOU Mingji;YUAN Bin(New Material Research Institute,Nanjing Chemical Fiber Co.,Ltd.,Nanjing 210019)

机构地区：[1]南京化纤股份有限公司新材料研究院,江苏南京210019

出　　处：《合成纤维工业》2025年第2期68-73,共6页China Synthetic Fiber Industry

摘　　要：综述了莱赛尔纤维纺丝溶液稳定剂的研究进展,重点分析了不同稳定剂的作用机理、优缺点及适用性。抗氧化类稳定剂中,没食子酸丙酯(PG)虽能有效抑制自由基链式反应,但易导致溶液颜色加深;羟胺(HA)通过络合金属离子和捕获醛酮可显著降低色度,但自身分解产生气体可能干扰纺丝;丹宁酸及2,4,5,7,8-五甲基-4-氢-1,3-苯并二噁英-6-醇(PBD)在长时间稳定性与颜色控制方面表现更优。金属离子螯合剂类稳定剂(如磷酸盐、亚氨基二乙酸钠盐共聚物)通过络合过渡金属离子能够有效抑制催化副反应,但需优化配方;抗氧抗热复合稳定剂(如PBD与PG或丁基化羟基甲苯组合)通过协同效应可显著提升系统稳定性,同时减少发色物质生成。N-苄基吗啉-N-氧化物作为牺牲底物,通过非抗氧化机制抑制N-甲基吗啉-N-氧化物自催化分解,展现出了独特优势。未来莱赛尔纤维纺丝溶液稳定剂的发展需聚焦多组分复合稳定剂的协同优化,平衡纺丝溶液稳定性与纤维外观,并结合工艺调控实现体系高效稳定。The research progress of stabilizers for lyocell fiber spinning solutions was reviewed.The action mechanisms,advantages and disadvantages,and applicability of different stabilizers were emphatically analyzed.Among antioxidant stabilizers,propyl gallate(PG)can effectively inhibit the free-radical chain reaction,but it easily leads to a deepening of the solution color.Hydroxylamine(HA)can significantly reduce the chromaticity by chelating metal ions and capturing aldehydes and ketones,yet the gas generated from its self-decomposition may interfere with spinning.Tannic acid and 2,4,5,7,8-pentamethyl-4-hydro-1,3-benzodioxin-6-ol(PBD)perform better in terms of long-term stability and color control.Metal-ion chelating stabilizers(such as phosphates,iminodiacetic acid sodium salt copolymers)can effectively inhibit catalytic side-reactions by chelating transition metal ions,but the formulation needs to be optimized.Antioxidant and heat-resistant composite stabilizers,such as combinations of PBD with PG or butylated hydroxytoluene)can significantly improve the system stability through a synergistic effect while reducing the formation of chromogenic substances.N-benzylmorpholine-N-oxide as a sacrificial substrate demonstrates its unique advantages through inhibiting the autocatalytic decomposition of N-methylmorpholine-N-oxide based on non-antioxidant mechanism.The future development of spinning solution stabilizers for lyocell fiber should be focused on the synergistic optimization of multi-component composite stabilizers,the balance of the spinning solution stability and the fiber appearance,and the achievement of efficient system stability in combination with process control.

关 键 词：莱赛尔纤维 纺丝溶液 N- 甲基吗啉- N- 氧化物 稳定剂 降解 

分 类 号：TQ341.9[化学工程—化纤工业]