Production method of continuous polymerization melt direct spinning functional polyamide fiber and the functional polyamide fiber

Abstract

Disclosed are a production method of continuous polymerization melt direct spinning functional polyamide fiber and the functional polyamide fiber. The method comprises: continuously conveying the functional powder slurry pre-dispersion prepared by water, caprolactam and functional powder to a functional powder slurry multi-stage grinding device for grinding and dispersing; the obtained functional powder slurry is mixed with caprolactam melt and The catalyst is mixed evenly by the dynamic mixer, and the temperature is adjusted by the heat exchanger, and then enters the hydrolysis reactor for ring-opening reaction; the obtained functional caprolactam oligomer melt is removed by the oligomer melt dehydrator, and then enters the pre-polymerization reactor for addition polymerization reaction; the obtained functional polyamide prepolymer melt goes through the prepolymer melt dehydrator to remove residual moisture and then enters the post-polymerization reactor for polycondensation reaction; the obtained functional polyamide melt passes through the thin film evaporation system to remove caprolactam monomer It is directly transported to the spinning box for spinning to obtain functional polyamide fibers. The functional powder in the functional polyamide fiber is highly uniformly dispersed.

Description

technical field [0001] The invention relates to the technical field of polymer material synthesis, in particular to a production method of continuous polymerization melt direct spinning functional polyamide fiber and the functional polyamide fiber. Background technique [0002] At present, the preparation method of functional polyamide fiber is mainly the masterbatch method. The masterbatch method is to melt and mix functional powder and carrier resin to obtain functional masterbatch with high functional powder content, and then uniformly mix functional masterbatch melt and polyamide melt to obtain functional polyamide fiber through spinning process. In the process of preparing functional polyamide fibers by masterbatch method, the dispersion of functional powder in high-viscosity polyamide melt mainly depends on the mechanical shear force provided by mixing equipment, so it is difficult to realize the dispersion of functional powder in polyamide melt. The high uniform disp...

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Problems solved by technology

In the process of preparing functional polyamide fibers by masterbatch method, the dispersion of functional powder in high-viscosity polyamide melt mainly depends on the mechanical shear force provided by mixing equipment, so it is difficult to realize the dispersion of functional powder in polyamide melt. The high uniform dispersion in the middle makes the spinning performance of the prepared functional polyamide melt poor

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