Color-absorbing fiber and method for preparing color-absorbing nonwoven fabric

Abstract

The invention discloses a preparation method of dye-absorption fibers. The preparation method of the dye-absorption fibers comprises the steps that a cationic cellulose ether aqueous solution with the concentration of 5g / L-100g / L is prepared, an alkali compound is added to the cationic cellulose ether aqueous solution to adjust the pH value to be 11-13, viscose is put into the cationic cellulose ether aqueous solution to be reacted for 15-60 minutes at the temperature of 80-100 DEG C, and poly quaternary ammonium salt viscose is obtained; the poly quaternary ammonium salt viscose is taken out and dried, and then the dye-absorption fibers are obtained. The invention further provides a preparation method of dye-absorption non-woven cloth. The preparation method of the dye-absorption non-woven cloth comprises the steps that the dye-absorption fibers are provided; lapping is carried out on the dye-absorption fibers; net fixation is carried out on the dye-absorption fibers after lapping, and the cloth is obtained. By means of the preparation method of the dye-absorption fibers and the preparation method of the dye-absorption non-woven cloth, dye-absorption non-woven cloth with high absorption force and tearing resistance can be prepared.

Description

technical field [0001] The invention relates to the technical field of light chemical industry, in particular to a method for preparing a color-absorbing fiber and a color-absorbing nonwoven fabric. Background technique [0002] In the washing of clothes in daily life, generally all the clothes that need to be washed are placed in the washing machine together, and then add water to stir or wash in a drum. Since all the clothes that need to be washed are together, the dye that falls off from the clothes that are easy to fade It will disperse in water, and then cross-dye other white or light-colored clothes, resulting in serious damage to the appearance of the dyed clothes. Therefore, at present, if it is found that the clothes that are obviously easy to fade can only be washed separately, which not only wastes water and electricity resources, but also is troublesome. [0003] Non-woven fabrics, also known as non-woven fabrics, are composed of directional or random fibers. Th...

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Problems solved by technology

[0004] However, the nonwoven fabric has low strength, is easy to deform, and has a lot of surface fiber leakage, especially after the viscose nonwoven fabric reacts in a high-temperature alkaline aqueous solution, it needs to be dried at a high temperature before it can be used. After this process, it will become brittle and its strength will decrease, so the nonwoven fabric will become wrinkled after this process, the size shrinks significantly, and the surface fiber leakage is very serious. The nonwoven fabric obtained in this way is not only ugly in appearance, but also broken The strength and tear strength are significantly reduced. If the color-absorbing nonwoven fabric prepared by this method is placed in a washing machine for strong cleaning, it will almost be torn and shredded in the end. The debris is mixed with all the clothes, and even cannot be found. arrive

Moreover, in industrialization, no matter it is a roll of nonwoven fabric or a sheet of nonwoven fabric, it is difficult to have a complete set of equipment to ensure that the temperature and pressure of the reaction remain stable, and the color absorption of the color-absorbing nonwoven fabric in this way The uniformity and stability of the effect are difficult to control