Soochow University

Nantong Textile and Silk Industrial Technology Research Institute

Xiaochen Wei

Jiajie Long

Feng Chen

Hongmei Xu

Chuanglong Cui

Ming Shen

A solvent medium for diazotization reaction includes a mixed solution of polyethylene glycol and water. The molecular weight of polyethylene glycol is 200-600, and the volume ratio of polyethylene glycol and water is 1:0.4-1.5. The mixed solution also includes hydrochloric acid or sulfuric acid, and the concentration of Hin the mixed solution is 0.32-1.72 mol L.

Solvent medium for diazotization reaction

A device for color-fixing processing on textiles includes a supercritical carbon dioxide fluid unit, a fixing liquid storage tank () and a fixing reactor (). The fixing liquid storage tank () is below the fixing reactor () and sealed connected by a connecting device (). The fixing liquid storage tank () has a cylindrical cavity in which a fluid distributor () is mounted. The fluid distributor () is composed of several interconnected pipes which bend down with the nozzles downward, and one of the pipes is used as circulated fluid inlet () connected with the supercritical carbon dioxide fluid unit, and the rest of the pipes are used as circulated fluid outlets.

Method for colour-fixing processing of textile and device therefor

A phase-transfer catalytic color fixation processing method for textile includes the following steps: (1) dry-dyeing a textile with disperse reactive dyes in supercritical carbon dioxide fluid under waterless condition; (2) putting the textile in a phase-transfer catalytic fixation device, taking phase-transfer catalyst as the carrier of circulated supercritical carbon dioxide fluid, transporting the ionized fixing catalytic alkaline substance from aqueous phase to hydrophobic supercritical carbon dioxide fluid phase, getting full contact with functional groups on fibers, resulting in the fixing catalytic reaction with disperse reactive dyes.

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Suzhou, China

Xiaochen Wei