Production technology of continuously spun viscose fiber with special-shaped cross section

Abstract

The invention discloses a production technology of a continuously spun viscose fiber with a special-shaped cross section. The production technology comprises the specific processes that a viscose stock solution is sprayed into an acid bath through a spinning jet for a reaction to generate as-spun filaments, the concentration of sulfuric acid in the acid bath is 120-160 g / L, the concentration of sodium sulfate is 200-270 g / L, the concentration of an auxiliary agent polyethylene glycol polyamine BEROL SPIN 652 is 10-200 ppm, the temperature of the acid bath is 47-60 DEG C, the as-spun filamentsare formed in a glass tube, is subjected to stretch forming at a spinning speed of 80-170 m / min, and then is wound into a reel through a winding system, and finally, the continuously spun viscose fiber with a star-shaped cross section is obtained. The production technology of the continuously spun viscose fiber with the special-shaped cross section has the advantages that a new technology for continuously spinning zinc-free fibers through viscose is adopted, the technology is simple, the cost is low, the pollution to a water body caused by the discharge of zinc sulfate along with wastewater iseffectively avoided, the environmental protection effect is better, in addition, the prepared product has a larger specific surface area and also has functions of flatness and smoothness, moisture absorption, breathability, sweat discharge and the like, and the market prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of viscose fiber production technology, and in particular relates to a production technology of continuously spun viscose fiber with special-shaped cross-sections. Background technique [0002] Viscose fiber belongs to regenerated cellulose fiber. It is a soluble cellulose xanthate made from natural cellulose through alkalization, aging, yellowing and other processes, and then dissolved in dilute lye to make viscose. Made by wet spinning. First, the raw material pulp is subjected to chemical and mechanical processing procedures such as dipping, pressing, crushing, aging, yellowing, and dissolution to make viscose collagen solution, which mainly includes two chemical reactions of cellulose alkalization and alkali cellulose yellowing; viscose The stock solution is sprayed into the acid bath through fine holes to regenerate the fiber into a solid continuous filament. The main component of the acid bath is sulf...

AI Technical Summary

Problems solved by technology

The viscose fiber produced by conventional methods has hygroscopicity and meets the physiological requirements of human skin. It has the style of hemp, and does not have a large specific surface area and functions such as wearing crisp, moisture absorption, breathability, and perspiration. At the same time, the acid bath used in the production process contains zinc sulfate, and the sewage containing zinc sulfate is directly discharged to pollute the water body. Larger, the cost of follow-up sewage treatment is higher, which increases the operating cost of the enterprise to a certain extent

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