Preparation method of cotton fabric formaldehyde-free crease-resistant finishing agent

Abstract

The invention discloses a preparation method of a formaldehyde-free crease-resistant finishing agent, and belongs to the technical field of textile finishing. The preparation method comprises the following steps: extracting fibroin from silk, carrying out a cross-linking reaction with itaconic acid, acrylic acid and the like to obtain a reactant for standby use, then mixing and soaking cotton fiber with water, then dropwise adding a sulfuric acid solution and cold water after defibering to obtain a turbid liquid, after mixing with deionized water after centrifugal separation for ultrasonic dispersion, adding acid anhydride for a stirring reaction to obtain a mixture, after centrifugal separation and washing drying, stirring and mixing a cocoanut fatty acid diethanolamide solution and linoleic acid to obtain a mixed liquor A, and then stirring and mixing with a standby reactant and carboxymethylcellulose to obtain the cotton fabric formaldehyde-free crease-resistant finishing agent. The preparation method is simple in preparation steps, the obtained formaldehyde-free crease-resistant finishing agent is free of formaldehyde release and is safe and environmentally-friendly, a fabric after being used does not yellow, the fabric is little in strength damage, and the break strength retention and chromaticity of the fabric can be effectively improved.

Description

technical field

[0001] The invention relates to a preparation method of a formaldehyde-free anti-wrinkle finishing agent, belonging to the technical field of fabric finishing. Background technique

[0002] In the traditional dyeing and finishing process, in order to achieve durable anti-wrinkle, stiffness, anti-shrinkage and other properties of textiles, formaldehyde and urea are generally used as raw materials, and the urea-formaldehyde resin finishing agent formed by condensation is used under the acid catalyst and appropriate baking temperature. , and finally form a network crosslink with cellulose fibers, thereby improving the crease resilience and dimensional stability of the fabric, and has a good non-ironing finishing effect. However, there are a large amount of free formaldehyde and formalin in this kind of finishing agent, and the fabrics treated with this kind of finishing agent will release a large amount of formaldehyde during the human body wearing process, acco...