Direct spinning system for mixed melt of bamboo charcoal and polylactic acid

Abstract

The invention provides a direct spinning system for mixed melt of bamboo charcoal and polylactic acid, comprising a polymerization framework and a spinning box body, wherein a stirring tank, a primary polymerization tank and a final polymerization tank are arranged on the polymerization framework in turn from top to bottom, the bottom of the stirring tank is in connection with the top of the primary polymerization tank through a first material conveying pipe, a first automatic control valve and a first metering pump are arranged on the first material conveying pipe, the bottom of the primary polymerization tank is in connection with the top of the final polymerization tank through a second material conveying pipe, a second automatic control valve and a second metering pump are arranged on the second material conveying pipe, a third material conveying pipe is connected to the bottom of the final polymerization tank, a third metering pump, a filtering and impurity removing device and a dynamic / static integrated pipeline type material mixing device are arranged on the third material conveying pipe in turn in a melt flowing direction, and a spinning metering pump and a spinning component are arranged in the spinning box body. According to the direct spinning system for the mixed melt of the bamboo charcoal and the polylactic acid provided by the invention, nanoscale bamboo fragrance charcoal micro powder is employed to modify the polylactic acid, and therefore fiber which is prepared from the modified polylactic acid has the advantages of reduced initial modulus, rising moisture regain, increased wear resistance and obviously improved air permeability and hand feeling.

Description

technical field [0001] The invention belongs to the technical field of polylactic acid fiber production, in particular to a bamboo charcoal polylactic acid mixed melt direct spinning system. Background technique [0002] Polylactic acid (PLA) fiber is made from starch-containing agricultural products such as corn, wheat, and sugar beet. After fermentation to produce lactic acid, it is then made by polycondensation and melt spinning. The raw materials of PLA fiber come from a wide range of sources. It can be decomposed into carbon dioxide and water by microorganisms in soil or seawater. When burned, it will not emit poisonous gas and cause pollution. It is a sustainable ecological fiber. The fabric has good hand feeling and drapability, anti-ultraviolet radiation, low flammability and excellent processing performance. It is suitable for various fashion, casual wear, sporting goods and sanitary products, etc., and has broad application prospects. [0003] Polylactic acid (PLA...

AI Technical Summary

Problems solved by technology

[0003] Polylactic acid (PLA) fiber has many advantages such as antibacterial, smooth, quick-drying, etc., but its wear resistance is poor, and its moisture regain is low. Compared with other chemical fiber textile fabrics, the textile fabric produced by it is obviously harder, which seriously affects the use effect.

In addition, due to the long delivery pipeline of polylactic acid, the viscosity of the polymer melt near the pipe wall is particularly large, and the molecular weight distribution of the polymer due to the uneven melt flow rate during the transportation of the polylactic acid melt is wide ( Unevenness) problem, thus affecting the spinning quality

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