Method for preparing viscose fiber fabric by carbon dioxide desizing process

Abstract

The invention discloses a method for preparing viscose fiber fabric by a carbon dioxide desizing process. The viscose fiber fabric is prepared from the following warp and weft materials in parts by weight: 40-90 parts of viscose fiber, 20-40 parts of combed cotton and 8-18 parts of superfine denier polyester; the carbon dioxide desizing process is carried out between the slashing operation and the air injection operation; a desizing working liquid containing desizing enzyme takes citric acid and a salt solution of the citric acid as a buffer system, the pH value of the system is adjusted by a dilute alkali solution, a micro-emulsion is formed in situ by a hydrophobic supercritical carbon dioxide medium, and the micro-emulsion can release the active desizing enzyme when penetrating through a fiber product along with fluid, so that the desizing pretreatment for the slurry on the fiber product can be realized. After the method is adopted, the desizing efficiency of the enzyme in the supercritical carbon dioxide medium can be improved; the method is simple in technology and convenient to operate; the desizing treatment does not need to be carried out at a high temperature, so that the application of a great of water, heat and high-concentration alkaline in the traditional desizing process can be avoided; the method has the characteristics of being efficient, energy-saving, environment-friendly and the like.

Description

technical field [0001] The invention belongs to the technical field of textiles, in particular to a method for preparing viscose fabrics by utilizing a carbon dioxide desizing process. Background technique [0002] Viscose fiber, one of the main varieties of man-made fibers; alkali cellulose is formed from natural cellulose, and then reacted with carbon disulfide to form cellulose xanthate, and the viscous solution obtained by dissolving in dilute lye is called viscose , viscose becomes viscose fiber after wet spinning and a series of treatment processes; viscose fiber is also called rayon and ice silk; It is relatively brittle and has poor weavability. There are many insurmountable problems when it is made into fabrics, such as: fluffy fibers, poor cohesion between fibers, more serious static electricity, more hairiness, easy fiber adhesion, and cotton in the spinning process. Netease falling, easy to block the bell mouth, etc., can not be applied to the textiles of daily ...

AI Technical Summary

Problems solved by technology

[0002] Viscose fiber, one of the main varieties of man-made fibers; alkali cellulose is formed from natural cellulose, and then reacted with carbon disulfide to form cellulose xanthate, and the viscous solution obtained by dissolving in dilute lye is called viscose , viscose becomes viscose fiber after wet spinning and a series of treatment processes; viscose fiber is also called rayon and ice silk; It is relatively brittle and has poor weavability. There are many insurmountable problems when it is made into fabrics, such as: fluffy fibers, poor cohesion between fibers, more serious static electricity, more hairiness, easy fiber adhesion, and cotton in the spinning process. Netease falling, easy to block the bell mouth, etc., can not be applied to daily life textiles