Preparation method of cottonseed meal protein compound slurry

Abstract

The invention discloses a preparation method of cottonseed meal protein compound slurry. The preparation method comprises the following steps: mixing cottonseed meal, which is treated by detoxification by using gossypol, with starch according to a dry basis mass ratio of (20 to 1) to (10 to 1) to obtain mixed dry powder; putting the mixed dry powder into an alkaline solution, wherein the mass of the alkaline solution is 5-20 times that of the mixed dry powder, and the hydroxyl ion concentration of the alkaline solution is 1-5%; carrying out ultrasonic treatment on the obtained mixture for 5-60min; then, stirring and heating for 30-90min at the constant temperature of 50-95 DEG C, adding a hydrophilic plasticizer in the process of stirring and heating, wherein the mass of the hydrophilic plasticizer accounts for 10-30% of that of the mixed dry powder, using diluted hydrochloric acid to adjust the pH value of a reaction system to a neutral or weak alkaline condition, and removing precipitate to obtain the slurry which is the cottonseed meal protein compound liquid slurry directly used for sizing. After the technical scheme is adopted, the completely unshelled cottonseed meal is prepared into the slurry for warp sizing so as to replace polyvinyl alcohol (PVA), so that the problem that the biodegradation of desizing wastewater is difficult to implement is effectively solved, and the bottleneck that the desizing wastewater is difficult to treat is broken through.

Description

technical field [0001] The invention belongs to the field of sizing materials for warp yarn sizing, and in particular relates to a method for preparing cottonseed meal protein compound sizing materials used for sizing. Background technique [0002] Sizing is an important process in the processing of spun yarn woven fabrics. Dip-type sizing machines are generally used in textile enterprises to sizing yarns. In the sizing process, firstly, the size and additives are compounded according to a certain ratio, and then the sizing and heat preservation gelatinization are carried out at 80-100°C for 30-90 minutes, and then the yarn is liquidized at 80-100°C Dip sizing of size allows the size to enter the interior of the yarn. After the yarn is dipped and sized, it enters a drying room at 100°C-120°C and is dried on a roller, so that the size film forms a size film on the surface of the yarn, which enhances the strength and wear resistance of the yarn and fits the hairiness. , redu...

AI Technical Summary

Problems solved by technology

The addition of the two reagents essentially cannot improve the two disadvantages of poor film-forming properties and drying denaturation of the protein size, thus limiting the successful application of the protein size in the sizing process

In addition, in this patent, compounding protein slurry with PVA, especially when the PVA content exceeds 50%, can effectively improve film formation and protein denaturation during drying, but it still cannot completely replace PVA