Bamboo charcoal polylactic acid melt direct spinning technology

Abstract

A bamboo charcoal polylactic acid melt direct spinning technology comprises the steps that 1, lactide and bamboo charcoal micro powder are added into a stirring tank to be stirred; 2, the lactide and bamboo charcoal micro powder mixture falls into a preliminary polymerization tank through a first pipeline for preliminary polymerization; 3, a polylactic acid bamboo charcoal melt falls into a final polymerization tank through a second pipeline for final polymerization; 4, a third valve on the bottom of the final polymerization tank is switched on, and the polylactic acid bamboo charcoal melt is pumped out and conveyed into a spinning manifold through a third metering pump; 5, a spinning metering pump and a spinning component are arranged in the spinning manifold, and the polylactic acid bamboo charcoal melt is metered and pressurized by the spinning metering pump and then enters the spinning component to be spun into bamboo charcoal polylactic acid fiber. According to the spinning technology, polylactic acid is modified through nanoscale bamboo charcoal micro powder, so that the prepared fiber has lower initial modulus, higher moisture regain, higher wear resistance, higher air permeability and better hand feeling.

Description

technical field [0001] The invention belongs to the technical field of polylactic acid fiber production, and in particular relates to a bamboo charcoal polylactic acid melt direct spinning process. 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 ac...

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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