间位芳纶SC-CO_(2)/DMSO混合介质深色无水染色  

Waterless deep dyeing of meta-aramid in SC-CO_(2)/DMSO mixture

作　　者：杨洪琴 赵虹娟 YANG Hongqin;ZHAO Hongjuan(School of Textile and Material Engineering,Dalian Polytechnic University,Dalian 116034,China)

机构地区：[1]大连工业大学纺织与材料工程学院,辽宁大连116034

出　　处：《印染》2025年第3期17-21,34,共6页China Dyeing and Finishing

基　　金：国家自然科学基金(21706021);辽宁省教育厅面上项目(LJK⁃MZ20220903)。

摘　　要：间位芳纶在使用超临界二氧化碳(SC-CO_(2))进行深色染色时,通常需要加入载体来减弱纤维分子间的范德华力和氢键。通过将二甲基亚砜(DMSO)与SC-CO_(2)进行混合来代替载体,以改善间位芳纶的SC-CO_(2)高色深染色性能。结果表明,DMSO与SC-CO_(2)的协同作用能有效溶胀间位芳纶,在温度为110℃的条件下,织物K/S值可达22.48,且透染率在90%以上。经SC-CO_(2)/DMSO混合介质染色后,间位芳纶的内部晶体结构未改变,断裂强力未发生明显变化,断裂伸长率有所提高,耐水洗色牢度和耐摩擦色牢度可达4~5级,达到服用要求。In the process of deep dyeing of meta-aramid using supercritical carbon dioxide(SC-CO_(2)),a carrier is typically employed to reduce Van der Waals forces and hydrogen bonds between fiber molecules.In this study,dimethyl sulfoxide(DMSO)is combined with SC-CO_(2)to replace the carrier for high color depth dyeing of meta-aramid.The results demonstrate that the synergistic action of DMSO and SC-CO_(2)effectively substitutes the carrier in swelling the meta-aramid fibers.The dyeing temperature in the SC-CO_(2)/DMSO medium is 110℃,while the color strength reaches 22.48,and over 90%of the fibers achieve complete dye penetration.After dyed with the SC-CO_(2)/DMSO mixture,the internal crystal structure of the meta-aramid remains intact,with no significant change in tensile strength.However,the elongation at break increases,and the washing and rubbing fastness ratings reach Grade 4-5,meeting commercial standards.

关 键 词：间位芳纶 超临界二氧化碳 二甲基亚砜 低温染色 高色深 

分 类 号：TS193.65[轻工技术与工程—纺织化学与染整工程]