分散蓝79在超临界CO_2中的溶解特性及染色行为  

Solubility and dyeing performance of disperse blue 79 in supercritical carbon dioxide

作　　者：余志成[1] 林鹤鸣[1] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,浙江杭州310018

出　　处：《纺织学报》2006年第6期47-50,共4页Journal of Textile Research

基　　金：浙江省自然科学基金资助项目(200071)

摘　　要：设计了一种测定超临界CO2中分散染料溶解度的新方法,并对分散蓝79的溶解度进行了测定;分析了系统温度、压力对溶解度的影响以及与染色K/S值的关系。实验结果表明,分散蓝79在超临界CO2中的溶解度随系统温度的提高而下降,随系统压力的提高而增加;聚酯织物的K/S值在实验范围内随系统温度、压力的提高而增加,而与染料溶解度的相对大小无关;分散蓝79在130℃2、2 MPa、循环速率较低的超临界CO2流体中,易发生部分熔融现象,原因是高压降低了分散染料的熔点。A new method of measurement for solubility of disperse dyes in supercritical carbon dioxide was designed and the solubility of disperse blue 79 was measured. The effect of temperature and pressure of supercritical carbon dioxide on the solubility of the dye and the relationship between solubility and K/S value has been also investigated. The results of experiments indicate the solubility of C. I. disperse blue 79 decreases with increasing of the temperature and increases when increasing pressure. The K/S value of the polyester fabrics increases when increasing the temperature or the pressure, which have nothing to do with the solubility of the dye. h was observed that C. I. disperse blue 79 partially melted in the condition of 130 ℃ ,22 MPa and slowly circulation due to high pressure, which lowers the melting point.

关 键 词：超临界CO2 溶解度 分散蓝 聚酯织物 K/S值 

分 类 号：TS193.21[轻工技术与工程—纺织化学与染整工程]