COTTON FIBER DYE FOR SUPERCRITICAL CO2 FLUID DYEING, AND DYEING METHOD THEREOF

摘要

The present invention provides a cotton fiber dye for supercritical CO2 fluid dyeing, and a dyeing method thereof. The dyeing method comprises the following steps: step S1, providing a dyeing system comprising a dye vessel and a dyeing vessel connected with each other; step S2, dissolving a cotton fiber dye in a fluid modifier, then pouring the same together into the dye vessel, and closing the dye vessel; putting a fabric into the dyeing vessel, and closing the dyeing vessel; step S3, injecting liquid CO2 into the dyeing system, heating and pressurizing the dyeing system to convert the liquid CO2 into a supercritical CO2 fluid, and dissolving the cotton fiber dye in the supercritical CO2 fluid; and circulating the supercritical CO2 fluid in the dye vessel and the dyeing vessel, thereby completing dyeing. The cotton fiber dye of the present invention has advantageous absorption and dyeing properties. In addition, a method for synthesizing the cotton fiber dye of the present invention has a simple manufacturing process.