Preparation method of sizing agent for pure cotton yarn sizing

Abstract

The invention discloses a preparation method of a sizing agent for pure cotton yarn sizing. The method comprises the following steps that (1) beer distiller's dried grain is added into water, whereinthe bath ratio is (1:5)-(1:30); cleaning and filtering are performed; rest soluble sugar in the brewer's grain is filtered away; (2) the brewer's grain subjected to sugar removal is dried and is smashed into powder being 30 mesh; (3) protein type soluble substances in the smashed beer distiller's dried grain are extracted by a sodium hydroxide water solution; (4) a brewer's grain mixed solution issubjected to solid-liquid separation; the centrifugal rotating speed is 5000 to 10000rmp; the centrifugation time is 10 to 30min; (5) an acrylamide water solution and butyl acrylate are sequentiallyand dropwise added; after the dropwise adding is completed, continuous heat insulation and stirring are performed for certain time; the sizing agent is obtained. The viscosity of the prepared sizing agent is small; serous fluid can be favorably and better permeated through the inside of pure cotton yarns, so that the sizing efficiency is improved; meanwhile, the per se contains various substances;the size film property is excellent; the hairiness quantity of the pure cotton yarns can be obviously reduced; the wear-resisting property of the yarns is improved.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a method for preparing pure cotton yarn sizing slurry. Background technique [0002] The purpose of sizing is to saturate and cover the yarn with sizing material to increase its strength, improve wear resistance, and reduce hairiness, thereby reducing or preventing warp yarn breakage in the weaving process and improving weaving efficiency. It is a must in the textile industry. An indispensable process. At present, the three main varieties in the size industry are: polyvinyl alcohol, modified starch and acrylic size. Starch size has good film-forming properties, strong affinity with natural fibers, and is easy to desizing; but starch size has insufficient sizing strength, is easy to break, and has poor wear resistance. Polyvinyl alcohol sizing film has high strength and good flexibility, and is often used for sizing pure cotton. However, it is difficult to desizing polyvinyl al...

AI Technical Summary

Problems solved by technology

Starch size has good film-forming properties, strong affinity with natural fibers, and is easy to desizing; but starch size sizing is not strong enough, easy to break, and poor wear resistance

Polyvinyl alcohol size film has strong strength and good flexibility, and is often used for sizing pure cotton, but it is difficult to desizing polyvinyl alcohol, and the desizing wastewater is not easy to degrade, causing great environmental pollution

Polyacrylic acid slurry has low viscosity, good fluidity, and good adhesion to synthetic fibers. In actual production, it can be mixed with starch and polyvinyl alcohol slurry, but the price of polyacrylic acid slurry has always been high. Conducive to textile enterprises to reduce production costs