超临界CO_2中分散红54在涤纶织物中的扩散研究  

Study on Diffusion of Disperse Red 54 within Terylene Fabric in Supercritical Carbon Dioxide

作　　者：李雁[1] 徐明仙[2] 董萍 沈元[1] 林春绵[1] 

机构地区：[1]浙江工业大学生物与环境工程学院,浙江杭州310014 [2]杭州职业技术学院化工系,浙江杭州310018 [3]镇海区环境保护局,浙江宁波315200

出　　处：《高校化学工程学报》2014年第3期549-552,共4页Journal of Chemical Engineering of Chinese Universities

基　　金：浙江工业大学校级自然科学研究基金(2011XY014)

摘　　要：超临界CO 2染色技术是一种新型的绿色环保染色技术，超临界CO 2中分散染料在涤纶织物中的扩散性能是超临界CO 2染色技术的一个重要基础。为了研究超临界CO 2中分散染料在涤纶织物中的扩散性能，研究采用“卷层法”，在温度70~110℃，压力16~24 MPa下，选用分散红54在自行研制的超临界CO2染色装置中对涤纶织物进行超临界CO2染色扩散实验。实验结果表明，染料在涤纶织物中的扩散过程是一边上染纤维一边向纤维内部扩散的过程，所建立的染色-扩散模型成功地描述了这一过程。随着温度的升高，染色速率系数与扩散系数之比随之增大，随着压力的升高，两者之比先升后降。Supercritical CO 2 dyeing is a green dyeing process, while the diffusion of disperse dyes in terylene fabric is one of the most important factors in this technology. In order to study the diffusion of disperse dyes in terylene fabric in the presence of supercritical CO2, diffusion experiments was carried out using the“film roll method”in a flow-type dyeing apparatus under 70~110℃and 16~24 MPa. The results indicate that the terylene fabric is dyed immediately and a widely-used model for dye diffusion immerged in water or supercritical CO2 is not suitable to describe the dye diffusion in terylene fabric. A homogenous reaction and diffusion model was successfully employed to analyse the diffusion process. It is found that the ratio of dyeing rate and diffusion coefficient increases with temperature, but when the pressure increases, the ratio of dyeing rate increases in the beginning and then decreases.

关 键 词：超临界CO 2 涤纶 分散红54 扩散 SUPERCRITICAL CO2 disperse RED 54 

分 类 号：TS193.65[轻工技术与工程—纺织化学与染整工程]