CAJ | 학술논문

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。
초림계CO 2염색기술시일충신형적록색배보염색기술，초림계CO 2중분산염료재조륜직물중적확산성능시초림계CO 2염색기술적일개중요기출。위료연구초림계CO 2중분산염료재조륜직물중적확산성능，연구채용“권층법”，재온도70~110℃，압력16~24 MPa하，선용분산홍54재자행연제적초림계CO2염색장치중대조륜직물진행초림계CO2염색확산실험。실험결과표명，염료재조륜직물중적확산과정시일변상염섬유일변향섬유내부확산적과정，소건립적염색-확산모형성공지묘술료저일과정。수착온도적승고，염색속솔계수여확산계수지비수지증대，수착압력적승고，량자지비선승후강。
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.