Method for improving water and moisture absorbing performance of acrylic fiber by using gamma-polyglutamic acid hydrogel

Abstract

The invention discloses a method for improving water and moisture absorbing performance of acrylic fiber by using gamma-polyglutamic acid hydrogel. The method is used for settling fabric by using gamma-polyglutamic acid as a finishing agent and ethylene glycol diglycidyl ether as a cross-linking agent. The method includes the steps of dissolving the gamma-polyglutamic acid in distilled water or tap water, preparing a 4%-20% solution, adding ethylene glycol diglycidyl ether according to 20%-60% of the mass of the gamma-polyglutamic acid, and stirring evenly so as to mix evenly. Acrylic fiber is soaked in a fishing liquid for 5-10 minutes, soaked and rolled twice by using a padder, rolling surplus rate of the fabric is 65-110%, the soaked and rolled fabric is wrapped by a preservative film and reacts for 5h-25h in an oven at the temperature of 40-80 DEG C, then the preservative film is removed, and the fabric is dried. Or the soaked and rolled fabric is baked for 5-10 minutes in a baking machine at the temperature of 110-140 DEG C. Standard moisture regain and moisture absorbing amount of the settled acrylic fiber are greatly increased, and wearing comfortableness is remarkably improved.

Description

Technical field: [0001] The invention relates to a method for finishing acrylic fiber fabrics for water absorption and hygroscopicity, in particular to a method for finishing acrylic fiber fabrics with biomacromolecule material gamma-polyglutamic acid hydrogel to improve water and hygroscopicity. technical background: [0002] Acrylic fiber is a synthetic fiber made of a copolymer of more than 85% acrylonitrile and the second and third monomers through wet spinning or dry spinning. The fibers obtained by spinning copolymers with acrylonitrile content between 35% and 85% are called modified polyacrylonitrile fibers. [0003] The performance of polyacrylonitrile fiber is very similar to that of wool. It has good elasticity. When it is stretched by 20%, the rebound rate can still maintain 65%. 1 to 2.5 times higher. Excellent light fastness, one year of exposure in the open air, the strength will only decrease by 20%, the fiber softening temperature is 190-230 ℃, it can resis...

AI Technical Summary

Problems solved by technology

[0004] Although acrylic fiber has excellent performance, it still has serious disadvantages in wearing performance, mainly manifested in low hygroscopicity and serious static electricity.

These shortcomings not only seriously affect the wearing comfort of acrylic fabrics, but also affect the production safety of enterprises. The static electricity generated by acrylic fabrics may ignite flammable and explosive products and cause fires.