Method for improving dyeing fastness of mat rush

Abstract

The invention belongs to the technical field of mat rush for knitting, and particularly relates to a method for improving the dyeing fastness of the mat rush. The method comprises the following stepsof preparing a mixed solution, treating the mat rush with the mixed solution, preparing dyed materials and preparing braided raw materials. Compared with the prior art, the method has the advantagesthat the mixed solution can be used for modifying the mat rush, so that organic matters in the mat rush can be combined with the mixed solution; in the dyeing process, dye can be tightly attached to fibers through a capillary pore passage, so that the dyeing efficiency is improved; and an alkaline dyeing auxiliary agent is matched, and a protective film with the lubricating effect can be formed onthe surface of the mat rush, so that the reasonable regulation and control of the dyeing condition can be realized, the molecular density of the mat rush can be in a proper state, the dyeing frictionfastness of the mat rush is improved, and the dyeing requirement of the handicraft is met.

Description

technical field [0001] The invention belongs to the technical field of rush for weaving, and in particular relates to a method for improving the color fastness of rush for weaving. Background technique [0002] Rush is a common economic crop, which belongs to the grass plant in the plant fiber. Its outer layer is a wax powder layer, followed by epidermis, basic tissue, assimilated tissue, fiber bundles, lacunae, vascular bundles, pith, and the whole It is a heterogeneous capillary material, composed of cellulose, hemicellulose and lignin. Cellulose and hemicellulose contain rich hydrophilic hydroxyl groups. The dye passes through the rush capillary channel with the aqueous solution. After the grass cell wall diffuses, it settles on the surface of the fiber, which makes the rush dyeing. The dyed particles are positively charged after the basic dye is charged in the solution, and the hydroxyl groups in the rush fiber are ionized in the aqueous solution to make the whole rush f...

AI Technical Summary

Problems solved by technology

[0002] Rush is a common economic crop, which belongs to the grass plant in the plant fiber. Its outer layer is a wax powder layer, followed by epidermis, basic tissue, assimilated tissue, fiber bundles, lacunae, vascular bundles, pith, and the whole It is a kind of heterogeneous capillary material, which is composed of cellulose, hemicellulose and lignin. Cellulose and hemicellulose are rich in hydrophilic hydroxyl group. The dye passes through the rush capillary channel with the aqueous solution. After the grass cell wall diffuses, it settles on the surface of the fiber, which makes the rush dyeing. The dyed particles are positively charged after the basic dye is charged in the solution, and the hydroxyl groups in the rush fiber are ionized in the aqueous solution to make the whole rush fiber negatively charged. , therefore, the positively charged basic dyes and the negatively charged rush fibers are mainly bonded by ionic bonds, and the color fastness is determined by the affinity. Rush is often used to weave straw mats, tatami mats, etc. Now it is gradually used to weave various bags or make straw crafts. In order to meet people's demand for color diversity, higher requirements are put forward for its dyeing performance. Basic dyes are bright in color and strong in coloring power. Can obtain bright-coloured color and luster with a small amount of dyestuff, but its dyeing rate and color fastness are relatively poor, in the prior art by adjusting the pH value of dye solution, dyeing heat preservation temperature, dyestuff consumption, the consumption of electrolyte and dyeing heat preservation time Grass dye uptake and crocking fastness are optimized but not noticeable

Images