Photochromic polylactic acid fiber master batch and preparation method thereof

Abstract

The invention provides a photochromic polylactic acid fiber master batch. The composition is prepared from the following components in parts by weight: 0 to 90 parts of PLA, 0 to 30 parts of photochromic powder, 0 to 20 parts of coloring agent, 0.5 to 1.5 parts of antioxidant and 0.5 to 1.5 parts of dispersing aid, wherein the molecular weight of the PLA is 10000 to 50000, the melting point of thePLA is 150 to 190 DEG C, and the glass transition temperature of the PLA is 55 to 60 DEG C. The invention also provides a preparation method of the photochromic polylactic acid fiber master batch. The master batch disclosed by the invention is suitable for production of polylactic acid fibers, has photochromic characteristics, and can solve the problems of poor coating fastness, poor air permeability and hard hand feeling of an existing photochromic fabric; meanwhile, the problem of environmental pollution caused in the existing photochromic fabric manufacturing process is also solved.

Description

technical field [0001] The invention relates to a photochromic polylactic acid fiber masterbatch and a preparation method thereof. Background technique [0002] Polylactic acid (PLA) fiber is made from corn, wheat, sugar beet and other starchy agricultural products, which are fermented to produce lactic acid, and then polycondensed and melt-spun. Polylactic acid fiber is a kind of synthetic fiber whose raw material can be planted, is easy to plant, and the waste can be naturally degraded in nature. 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] Now there are two ...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of photochromic polylactic acid fiber masterbatch and its preparation method, and this masterbatch is suitable for the production of polylactic acid fiber, and has photochromic characteristic, can solve existing photochromic fabric coating fastness The problems of poor density, poor air permeability, and hard hand feeling; at the same time, it also solves the problem of environmental pollution caused by the manufacturing process of existing photochromic fabrics