Preparation method of low-pollution textile sizing agent

Abstract

The invention relates to a preparation method of a low-pollution textile sizing agent. The method comprises the steps of mixing hydroxypropyl modified starch and silicon powder, then feeding the mixture into deionized water, and feeding sodium hydroxide and methyl alcohol into the mixed solution; carrying out hydrolysis, drying and purifying to obtain nanosilicon dioxide modified starch; feeding soyabean protein into sodium hydroxide solution, stirring at constant speed for 15 minutes at the temperature of 45 DEG C, and filtering out precipitate to obtain protein slurry; pouring the nanosilicon dioxide modified starch, the protein slurry, polyvinyl alcohol, polyacrylate emulsion and an organic silicon defoamer into a mixer, and mixing to obtain the low pollution textile sizing agent. The low-pollution textile sizing agent prepared by the method is good in film-forming property and permeability; furthermore, the content of the polyvinyl alcohol in the formulation is lower, so that the low-pollution textile sizing agent is lower in environmental pollution.

Description

technical field [0001] The invention relates to a method for preparing low-pollution textile pulp. Background technique [0002] Warp sizing is a key link in weaving engineering. The purpose of sizing is to improve the wear resistance of the yarn, reduce hairiness, increase the strength of the yarn appropriately, and reduce the elongation, so as to withstand the mechanical force of the warp yarn during the weaving process. Improve yarn weavability. [0003] At present, the sizing materials for warp yarn sizing mainly include three major sizing materials: starch, polyvinyl alcohol (PVA) and polyacrylic acid. Starch is a natural polysaccharide polymer. The size has good film-forming properties, strong affinity with natural fibers, and easy desizing; however, starch size is not strong enough in sizing, not wear-resistant, and has insufficient affinity with polyester fibers. Polyvinyl alcohol size film has high strength, good flexibility, and good slurry fluidity, but polyviny...

AI Technical Summary

Problems solved by technology

Starch is a natural polysaccharide polymer with good film-forming properties, strong affinity with natural fibers, and easy desizing; however, starch sizing is not strong enough, not wear-resistant, and has insufficient affinity with polyester fibers

Polyvinyl alcohol size film has high strength, good flexibility, and good slurry fluidity, but polyvinyl alcohol is difficult to desizing and causes great environmental pollution

Polyacrylic acid size is a general term for homopolymers, copolymers and blends of acrylic monomers. It has low viscosity, good fluidity, good adhesion to synthetic fibers, and can be easily mixed with starch and PVA size. It is suitable for warp sizing of various fibers, but the price of polyacrylic acid is high, which pushes up the production cost of printing and dyeing enterprises