Technology for producing fibers from bamboo charcoal micropowder and polylactic acid slices

Abstract

The invention discloses a technology for producing fibers from bamboo charcoal micropowder and polylactic acid slices. The technology comprises the following steps that the bamboo charcoal micropowder contained in a first stock bin falls into a color powder metering device by depending on the gravity, and the color powder metering device meters the bamboo charcoal micropowder; the bamboo charcoal micropowder metered by the color powder metering device is blown to a discharging pipe through dry compressed air while the dry polylactic acid slices contained in a second stock bin fall in the discharging pipe by depending on the gravity, and the bamboo charcoal micropowder and the dry polylactic acid slices are mixed in the discharging pipe and then fall into a spinning screw extruder; a melt filter filters bamboo charcoal-polylactic acid melt; the filtered bamboo charcoal-polylactic acid melt is delivered into a spinning box through a melt pipeline; a spinning metering pump and a spinning assembly which are arranged in the spinning box spin the bamboo charcoal-polylactic acid melt into the bamboo charcoal-polylactic acid fibers. According to the technology, polylactic acid is modified with the nanoscale bamboo aroma charcoal micropowder, and therefore the prepared fibers have the advantages that the initial modulus is decreased, the moisture regain is increased, the abrasive resistance is improved, and the air permeability and the handfeel are both obviously improved.

Description

technical field [0001] The invention belongs to the technical field of polylactic acid fiber production, and in particular relates to a technology for producing fiber from bamboo charcoal micropowder polylactic acid slices. Background technique [0002] Polylactic acid (PLA) fiber is made from corn, wheat, sugar beet, potato and other starchy agricultural products, which are fermented to produce lactic acid, and then polycondensed and melt-spun. 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] Polylac...

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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