超临界CO2染色技术

主要对超临界CO2染色技术进行了研究。运用超临界CO2特性,研制了无水染色装置,对该装置的基本结构及工作原理加以说明,并实现了计算机自动控制。使用无水染色装置,在超临界CO2状态下对纤维织物用分散染料进行染色,并采用扫描电镜和红外光谱仪测定分析改性和染色的效果。对染色工艺参数,如压强、温度和CO2的流量进行了分析,结果表明这些参数对染色效果影响较大。对天然纤维的改性,可以达到改善染色牢度和匀染度,通过合理控制染色压强、温度和CO2的流量等影响因素就可以取得较好的染色效果。

Technique of dyeing in supercritical CO2

The technique for dyeing in supercritical CO_2 was studied.The water-free dyeing facility with automatic computer control was designed based on supercritical CO_2 characteristics.The basic structure and operating principle of the facility were elucidated.The fabrics were dyed with disperse dyeing under supercritical CO_2,and the results of modifying and dyeing were measured by electronic scanning microscopy and infrared spectrometric analyzer.The dyeing parameters such as pressure,temperature and CO_2 flux were analyzed,which influenced the dyeing to a large extent.The modification on fabrics improves the rate of dye-uptake and the degree of homogeneity.The better dyeing effect can be achieved by controlling reasonably the dyeing pressure,temperature and CO_2 flux.