Non-slurry self-sizing method for cellulosic fiber containing yarns

Abstract

The invention relates to a non-slurry self-sizing method for cellulosic fiber containing yarns. The non-slurry self-sizing method for the cellulosic fiber containing yarns comprises the following steps: mixing alkali, components effectively breaking hydrogen bonds among polysaccharide molecules and water to obtain a dissolved solution, and pre-cooling the solution to be 5 DEG C to 15 DEG C below zero; at 5 DEG C to 80 DEG C below zero, processing cellulosic fiber containing yarns in the dissolving solution or a padding solution for 10 seconds to 15 minutes, washing, and processing the yarns for once to ten times, drying and obtaining self-sized yarns. According to the non-slurry self-sizing method for the cellulosic fiber containing yarns, no slurry is consumed, the utilized various solutions and washing liquids can be recycled, the production cost is low, the energy and water consumption is reduced, the dependency of the textile industry on non-degradable or high-cost traditional slurry is reduced, and the transformation of the textile industry is beneficial of transforming to the low-carbon environment protection industry.

Description

technical field [0001] The invention belongs to the field of sizing methods, in particular to a sizing-free self-sizing method for yarns containing cellulose fibers. Background technique [0002] According to statistics in 2010, among the 39 industries in my country, the chemical oxygen demand (COD) discharge of the textile industry ranks fourth, with a total of 305,000 tons, of which about 25% comes from desizing wastewater. The main reason for the high COD of desizing wastewater is that it contains a large amount of polyvinyl alcohol (PVA) slurry with high COD and low biodegradability. PVA slurry is difficult to desizing and has poor biodegradability. It accumulates in large quantities after being discharged into water bodies, inhibits and destroys the respiration activities of aquatic organisms, and causes the release and migration of heavy metals in sediments, which in turn causes more serious water pollution. No other size can match or surpass PVA in terms of sizing pe...

AI Technical Summary

Problems solved by technology

PVA slurry is difficult to desizing and has poor biodegradability. It accumulates in large quantities after being discharged into water bodies, inhibits and destroys the respiration activities of aquatic organisms, and causes the release and migration of heavy metals in sediments, which in turn causes more serious water pollution. No other size can match or surpass PVA in terms of sizing performance

[0003] In recent years, my country has advocated the use of modified starch / acrylic compound size to replace PVA, which is relatively feasible, but acrylic size has strong moisture absorption and re-viscosity, and its price is high, so it can only be used as an auxiliary size

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