Abstract: The dyeing mechanism of supercritical fluid and different dyeing process conditions are reviewed. Research progress of dyestuffs and color combination of blended dyestuffs is presented. The study on thermodynamics and kinetics of supercritical carbon dioxide dyeing is discussed. Dyestuffs solubility in supercritical carbon dioxide，dyestuffs distribution between fiber and supercritical CO2，and dyestuffs diffusion behavior in fiber are analyzed. The progress of dyeing equipment worldwide is reported. The key problems to be resolved in commercialization of supercritical carbon dioxide dyeing technology are as follows. One is enhancing dyes’ dissolution in supercritical carbon dioxide and diffusion in fiber，the other is development of large volume dyeing kettle under high pressure operating conditions.

Key words: supercritical carbon dioxide dyeing；color combination, solubility, dyeing equipment

摘要： 概述了超临界二氧化碳染色技术的染色机理，对不同染料的染色工艺条件的研究情况做了分析。阐述了染料研究和混合染料拼色研究的进展情况。对超临界二氧化碳的染色热力学和动力学性研究情况做了论述，对染料在超临界二氧化碳中的溶解度、染料在纤维与超临界CO2间的分配规律、染料在纤维中的扩散行为做了分析论述。对染色设备的国内外进展情况做了分析论述。指出了超临界二氧化碳染色技术产业化应用应解决的关键问题是增强染料的溶解和在纤维中的扩散，以及高压操作下大容积染色釜的研制。

关键词: 超临界二氧化碳染色, 拼色染色, 溶解度, 染色设备