Preparation method of low-pollution textile sizing agent

A textile slurry, low-polluting technology, applied in textiles, papermaking, fiber processing, etc., can solve the problems of difficult desizing, low viscosity, and good fluidity of polyvinyl alcohol, and achieve good film-forming properties and permeability. simple effect

Active Publication Date: 2014-07-16
SUZHOU RUNHONG TRADING
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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

Method used

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with specific embodiments.

[0016] The method for preparing low-pollution textile pulp in this embodiment comprises the following steps:

[0017] The first step is to mix hydroxypropyl modified starch with silicon powder, add it to deionized water, add sodium hydroxide and methanol, perform hydrolysis, dry and purify to obtain nano-silica modified starch, wherein, hydroxypropyl modified starch: The mass ratio of silicon powder: sodium hydroxide: methanol is: 100:5:0.1:0.2;

[0018] In the second step, soybean protein is added to a sodium hydroxide solution with a concentration of 0.2%, stirred at a constant speed at 45°C for 15 minutes, and then the precipitate is filtered to obtain a protein slurry;

[0019] The third step, according to the weight ratio, 72 parts of nano-silica modified starch, 15 parts of protein slurry, 11 parts of polyacrylate emulsion, 2 parts of polysiloxane modified polyether,...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/11D06M15/15D06M15/263D06M15/643D06M13/342D06M11/77
Inventor 劳吉清姚金荣毕晓芳
Owner SUZHOU RUNHONG TRADING
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