Anti-itching finishing method of ramie fabric with sodium hydroxide/urea water system

Abstract

The invention provides an anti-itching finishing method adopting a sodium hydroxide / urea water system for ramie fabric. The method comprises steps as follows: (1), an aqueous solution containing 7%(w / w) of sodium hydroxide and 18%(w / w) of urea is intensely mixed and then cooled to subzero 10 DEG C, and a cellulose dissolving solution is obtained; (2), the ramie fabric is impregnated in the dissolving solution obtained in the step (1) for 30 min; (3), the ramie fabric is taken out and placed in an aqueous solution containing 2%(w / w) of sulfuric acid and 5%(w / w) of sodium sulfate for solidification for 10 min and then is washed and dried. The finishing method is simple and easy to implement and is low in cost, the ramie fabric after finishing has good anti-itching performance, and meanwhile, the original excellent features of the ramie fabric are further reserved.

Description

technical field [0001] The invention belongs to the technical field of textile dyeing and finishing, in particular to an anti-itching finishing method for ramie fabrics in a sodium hydroxide / urea water system. Background technique [0002] Ramie is a unique fiber raw material in my country, also known as "Chinese grass", with a long and splendid history. Ramie fiber is a kind of natural cellulose fiber, which has good air permeability, good moisture absorption and release performance, and has a cool feeling when worn. It is especially suitable as a fabric for summer clothes. The degummed ramie fiber has a silky luster, and its fabric has the advantages of crispness, coolness, breathability, lightness, antibacterial, health care, etc. Therefore, ramie fabric is more and more favored by consumers. [0003] However, ramie fiber has high rigidity, stiffness and stiffness, poor fiber cohesion during spinning, loose yarn structure, and more hairiness, and the resulting fabric wil...

AI Technical Summary

Problems solved by technology

Ramie cellulase can dissolve and weaken the microfibrils on the surface of ramie fibers, and peel off layer by layer from the surface to the inside, which is beneficial to reduce fiber stiffness, improve hand feel and eliminate itching, but it is also easy to reduce the strength of the fabric

Resin covering finishing is to cover the surface of ramie fiber with polymers such as polyurethane, so that the microfibers on the surface of the fiber cannot touch human skin, thereby eliminating the itching feeling, but this method also makes the fabric lose the excellent characteristics and skin-friendly feeling of ramie fiber