Low temperature dyeing method of wool fiber or fabric with surface nano structure

Abstract

The present invention belongs to the field of dyeing and finishing processing of fabric, and is especially low temperature dyeing method of wool fiber or fabric with surface nano structure obtained via forming nano level embossed structure and active radical. After wool fiber or fabric is set inside low temperature plasma processing cavity, the pressure inside the cavity is first pumped to not higher than 10 Pa and then regulated with introduced non-polymerizing gas to 10-200 Pa and the wool fiber or fabric is discharged for low temperature plasma processing at power of 10-200 w for 1-30 min. The wool fiber or fabric through the low temperature plasma processing is low temperature dyed at temperature lower than 85 deg.c. The said process results in high color fastness, and can reduce residual dye in the effluent and waste water processing burdening.

Description

technical field [0001] The invention relates to the field of dyeing and finishing of textiles, in particular to a low-temperature dyeing method for wool fibers or fabrics with nanostructures on the surface obtained by constructing nano-concave-convex structures on the surface of wool fibers and generating active groups on the surface. Background technique [0002] Wool is a protein fiber, and there is a layer of dense and directional scales on its surface, which hinders the adsorption and dyeing of dyes, which makes wool dyeing usually need to be carried out at high temperature (boiling) for a long time. However, long-term boil-dyeing will cause yellowing, felt shrinkage, and strength reduction of wool, which will lose many of the original excellent characteristics of wool and cause energy waste. [0003] In order to change the dyeing properties of wool fabrics, relevant researchers have made many attempts. For example, printing and dyeing reported in...

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Problems solved by technology

However, long-term boil-dyeing will cause yellowing, felt shrinkage, and strength reduction of wool, which will lose many of the original excellent characteristics of wool and cause energy waste.

[0003] In order to change the dyeing properties of wool fabrics, relevant researchers have made many attempts. For example, printing and dyeing reported in the fifth issue of 2000 that wool was pretreated with a hydrogen peroxide-formic acid system, but too high a peroxyformic acid concentration would cause serious damage to wool fibers. Even if the concentration is low, it will be affected; and as reported in the fourth issue of Wool Spinning Science and Technology in 1999, wool is treated with alkali, but when the temperature exceeds 60 ° C and the NaOH concentration exceeds 10 mmol / L, there will be yellowing; some people use ammonia for pretreatment. However, due to the volatile odor of ammonia and the existing dyeing equipment, dyeing factories still cannot adopt this method; also, as reported in the fifth issue of foreign textile technology in 2000, enzymes are used as auxiliary agents for wool dyeing to improve wool dyeing. Dyeing fastness and dye uptake rate, but the acquisition of protease and price problems have hindered the actual promotion of production; and printing and dyeing auxiliaries, as reported in the first issue of 1994, used low-temperature dyeing auxiliaries SLD to dye wool at low temperature, but the color fastness is relatively low. Conventional dyeing is poor, and the addition of additives is not only cumbersome and costly, but also produces a lot of pollutants in the production process, which is not conducive to environmental protection

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