涤纶筒纱超临界二氧化碳流体染色工程化装备与工艺

针对传统水介质染色过程水耗、能耗、污水排放量大的难题,采用具有自主知识产权的1 000 L复式超临界CO_2流体染色装备系统对涤纶筒纱进行无水染色工程化生产。基于研发的复式超临界CO_2流体无水染色装备,系统介绍了其超临界流体染色工艺过程;同时,利用独特设计的筒纱染色釜,进行了涤纶筒纱超临界CO_2流体无水染色工艺研究。结果表明:利用研发的1 000 L复式超临界CO_2流体无水染色装备,可获得较高染色深度的筒纱,且染色产品具有良好的匀染性;此外,染色涤纶筒纱的耐水洗、耐摩擦色牢度可达到4~5级以上,耐日晒色牢度可达到6级以上,满足了工程化生产的需要。

Engineering plant and process for dyeing of polyester bobbins in supercritical CO2 fluid

In order to solve problems of large water consumption, power consumption and wastewater emissions in conventional aqueous dyeing process, anhydrous dyeing engineering production of polyester bobbins was conducted by employing a 1000 L multiple supercritical CO2 fluid dyeing system with independent intellectual property. Based on the developed multiple supercritical CO2 fluid dyeing plant, a dyeing process in supercritical fluid was introduced systematically. Furthermore, the anhydrous dyeing process for polyester bobbins was carried out in supercritical CO2 fluid using a uniquely designed bobbin dyeing kettle. The result show that the dyed polyester bobbins with high color depth and good levelness are obtained by employing the 1000 L multiple supercritical CO2 fluid dyeing plant. In addition, washing colorfastness, the rubbing colorfastness and light colorfastness of the dyed bobbins are rated more than 4-5, 4-5 and 6, respectively.