Photochromic polyester fiber with sheath-core structure

Abstract

The invention discloses a photochromic polyester fiber with a sheath-core structure, which comprises a sheath layer and a core layer, wherein the mass ratio of the sheath layer to the core layer is 2:8 to 4:6; the sheath layer is polyester resin, and the core layer comprises core layer fibers and color master batch for coloring the core layer fibers, wherein the mass percentage of the color masterbatch to the core layer is 3% to 10%; the color master batch comprises, by weight, 0-90 parts of a carrier, 1-30 parts of photochromic powder, 0-20 parts of a dye, 0.3-1.5 parts of a heat stabilizer,0.2-1 part of an antioxidant, and 0.5-1.5 parts of a dispersion aid. According to the photochromic polyester fiber with the sheath-core structure, the color master batch is added into the core layer,so that the original solution coloring of the polyester fiber is achieved, the production cost is reduced, and the environmental pollution is reduced; moreover, since the color master batch containsphotochromic powder, the polyester fiber gains photochromic characteristics; and the photochromic effect is long, so that the use requirement is met.

Description

technical field [0001] The invention relates to a photochromic polyester fiber with a sheath-core structure. Background technique [0002] Photochromic fibers are a new class of functional fibers that undergo reversible changes in color upon exposure to different wavelengths of light. This fiber has the advantages of high application value, non-toxic and harmless, and long service life. It can be widely used in various fields such as national defense, military affairs, and national economy, such as anti-counterfeiting trademarks, banknotes, ID cards, color-changing windows, light sensors, and camouflage clothing. (camouflage clothing), military tents and weapon camouflage coverings. This fiber can change into a specific color when exposed to sunlight (or a specific wavelength). [0003] At present, most of the photochromic fibers on the market are obtained by coating. The coating of the photochromic fibers obtained in this way is easy to fall off during use, and the discol...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the photochromic fibers on the market are obtained by coating. The coating of the photochromic fibers obtained by this method is easy to fall off during use, and the discoloration effect is not durable, and it will be brought on during the manufacturing process. a certain amount of environmental pollution