Study On Synthesizing Disperse Dye Microcapsules And Dyeing Polyester Suede-Like Fabric

With an eye to environment-friendship, this thesis investigates the application of disperse dye microcapsules. It is studied how slow-releasing action of microcapsules could be adjusted by changing core/wall ration, as a result, the dyeing speed of disperse dyes could be controlled. The purpose of the study is to solve some problems on matching colors such as competing dyeing and different shade, thus improves the application performance of disperse dye microcapsules.In the study, C.I.disperse blue 79, C.I.disperse red 167, C.I.disperse yellow211 and C.I.disperse red 60 had been chosen as the core materials, and melamine performed polymer had been chosen as the wall-former. Disperse dye microcapsules with double-layed wall were prepared by means of in-situ polymerization method, operating in phase ration 80:20.First, the impacts on particle size, and particle distribution as well as the content of microcapsules were studied and ensured by monofactorial experiments. The best techniques for synthesizing were explored in the operating conditions as follows: core/wall ration, milling speed of emulsification, concentration of MS.Second, choosing S, SE and E types disperse dye microencapsulated in that manner, these disperse dye microcapsules were used to dye polyester suede-like under high temperature press condition without auxiliaries, by comparing dyeing grades, wastewater absorbance and level-dyeing property with traditional disperse dyes.Moreover, choosing 3 different kinds hydrophilic property of disperse dye molecule microencapsulated, the impacts on dyeing wastewater with respect to different kinds of hydrophilic property were discussed.Finally, the paper discussed the influence on the dyeing speed of microcapsules because of different core/wall rations by monofactorial experiments. The possibility of matching colors with 3 S type primary colors disperse dyes microencapsulated was also studied.