Colored special-shaped super fine denier polyester monofilaments and production method thereof

Abstract

The invention relates to colored special-shaped super fine denier polyester monofilaments and a production method thereof. The colored special-shaped super fine denier polyester monofilaments are prepared from, by mass, 1-5% of anti-aging capsules, 5-10% of pigment, 5-10% of PEN slices, 1-3% of a dispersing agent and the balance polyester slices. The PEN slices, the polyester slices, the anti-aging capsules, the pigment and the dispersing agent are extruded and mixed together through a screw machine and then melted, melt is prepared and subjected to melt spinning through a special-shaped spinneret plate, and the colored special-shaped super fine denier polyester monofilaments are obtained. Due to the fact that PEN is added, the heat resistance of fibers is improved, and thus the roll sticking phenomenon is avoided when the heat setting temperature is higher than 245 DEG C; meanwhile, due to the higher heat setting temperature, disorientation of an orientation structure of an amorphous area is accelerated, the internal stress of the fibers is reduced, and thus the dimension stability of the fibers is improved; the setting temperature is raised, the mobility of macromolecular chains in the fiber structure is enhanced, the degree of crystallinity is increased, the content of an amorphous area is reduced, and the boiling water shrinkage is reduced.

Description

【Technical field】 [0001] The invention relates to the technical field of polyester monofilament, in particular to a colored special-shaped ultrafine denier polyester monofilament and a production method thereof. 【Background technique】 [0002] Chinese Patent Application No. 200910027027.9 relates to a melt direct spinning ultrafine denier polyester FDY yarn and its preparation process. The ultrafine denier polyester FDY yarn is produced according to the melt direct spinning one-step method, and the diameter of the pores used is 0.15-0.2MM. L / D=2.6-3.6, the spinneret with a plate surface diameter of 70-90MM, a fairing installed in the fiber cooling area and a two-way oiling system to directly produce ultra-fine FDY filaments, and the obtained single filament fineness DPF is 0.3-0.6, one The number of beam holes is 144F-192F; the process route adopted can greatly reduce the processing cost while improving the internal quality of the product, and has the ability to replace impo...

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Problems solved by technology

[0007] Chinese patent application No. 201120483660.1 relates to the field of synthetic fibers, specifically a bright polyester six-lobed special-shaped monofilament, which solves the problems of poor dyeing in the prior art

Chinese Patent Publication No. CN102660018A and Chinese Patent Publication No. CN202968797U have announced the application of this material in fibers to improve the heat resistance or barrier properties of fibers, but do not involve its blending with PET to prepare colored special-shaped fibers; Chinese Patent CN1211204C Discloses a production method of PET / PEN blend or copolymer film, but does not involve the preparation of fibers

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