Preparation method of double-deformed-section moisture-absorption sweat-releasing fiber

Abstract

The invention relates to a preparation method of double-deformed-section moisture-absorption sweat-releasing fiber, first, dimethyl isophthalate-5-benzenesulfonate sodium, ethylene glycol, a catalystand an anti-ether agent are mixed for ester exchange reaction, after completion of the reaction, ethylene glycol and phosphoric acid are added for adjusting, terephthalic acid, ethylene glycol, a catalyst, a stabilizer and a flatting agent are mixed for esterification reaction, a product obtained by the adjusting after the ester exchange reaction is added into the reaction system with esterification reaction end point is reached for polycondensation to obtain spinning melt, and finally the double-deformed-section moisture-absorption sweat-releasing fiber is obtained by metering, extrusion, cooling, oiling, stretching, heat setting and winding of the spinning melt. The method reduces the production of impurities in the fiber production process, thereby reducing the pressure rise of a spinning assembly and a filter, prolonging the service life, and ensuring the continuity and safety of the whole production process, and the method has good economic value and popularization value.

Description

technical field [0001] The invention belongs to the field of polyester spinning, and in particular relates to a method for preparing a moisture-absorbing and perspiration-absorbing fiber with a double-shaped cross-section. Background technique [0002] The new function-oriented production concept has rewritten the traditional market positioning of the textile industry and led the textile industry into a new era of high-tech fields. Starting from various aspects such as water, heat, air, skin feeling, safety and comfort, making the created fabrics have the properties of promoting health and refreshing comfort has always been the goal pursued by the textile industry. In recent years, the proportion of functional fabrics in the market has increased year by year. High-tech smart textiles with healthy and functional properties such as antibacterial, deodorant, UV protection, fire prevention, warmth and perspiration, moisture permeability and waterproof will become the future mark...

AI Technical Summary

Problems solved by technology

[0006] However, due to the addition of the third component in the CDP melt, its apparent viscosity is relatively large, and the impurities produced in the production process also increase accordingly, causing the pressure of some spinning components and the pressure difference of the filter to rise faster. There are carbonized cokes on the inner wall of the pipeline. These carbonized cokes adhere to the inner wall of the pipeline, which is easy to cause blockage of the pipeline system and is not easy to be removed, which brings great difficulties to the dredging of the pipeline. In addition, in the production of this kind of fiber In the process, the service life of the filter is greatly reduced, generally only one week, while the service life of some other spinning components is generally only 10 days, so it is necessary to clean and replace the spinning components frequently, which will not only increase the operating cost, but also Will affect the continuity and safety of the entire production process