Indigotin dyeing technique for warp yarn by using nano material and ultrasonic wave and device used therefor

Abstract

The invention relates to a technique for using nanometer material and ultrasonic wave to dye warp yarn into indigo blue, which comprises: wetting, dying, cleaning and drying the warp yarn, the technique is characterized in that the dying process is carried out under the ultrasonic wave effect and under the condition that the nanometer material is added into dyeing solution. A device which is used to execute the technique is provided with a stainless dye vat, wherein 8-12 energy transducers are arranged on the bottom inside the stainless dye vat, and all energy transducers are connected in parallel through a guiding wire and connected with an ultrasonic generator through the guiding wire. The technique of the invention utilizes the chemical activity and the surface effect of the nanometer material to increase the dyeing rate of dye greatly. The cavitation effect of the ultrasonic wave and the peptization of the nanometer material eliminate the aggregate ability of the nanometer material, the dying efficiency and the color fastness are greatly increased, 5-7 dye vats in traditional dying procedures are also saved, thereby the energy is greatly saved, and the pollution is reduced.

Description

technical field [0001] The invention relates to a textile dyeing process, in particular to a process for indigo dyeing of warp yarns with nanomaterials and ultrasonic waves and the device used. Background technique [0002] Traditional indigo dyeing of warp yarn is affected by many factors such as the surface properties of the cloth and the dyeing performance of the dye to the cloth. Since indigo dye is insoluble in water and has no affinity for fibers, it cannot be directly used for dyeing. It must be reduced to a soluble leuco with a reducing agent in an alkaline solution, and then oxidized to an insoluble indigo lake and attached to the yarn. The purpose of dyeing is achieved online. The dyeing process of the leuco indigo is that the leuco is firstly adsorbed on the surface of the fiber, and then diffuses to the inside. The carbonyl group in the dye molecule and the hydroxyl group in the fiber molecule form a hydrogen bond and fix on the fiber. Leuco indigo has low affi...

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Problems solved by technology

The existing process has problems such as high dyeing cost, long time consumption, and low dyeing rate

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