Production method of continuous polymerization melt direct-spinning functional polyarmide fiber, and functional polyarmide fiber

Abstract

The invention discloses a production method of a continuous polymerization melt direct-spinning functional polyarmide fiber, and the functional polyarmide fiber. The production method comprises the steps that a functional powder slurry pre-dispersion material prepared from water, caprolactam and functional powder in a blended mode is continuously delivered to a functional powder slurry multi-stagegrinding device to be ground and dispersed; obtained functional powder slurry is evenly mixed with a caprolactam melt and a catalyst through a dynamic mixer, and after the temperature of a mixture isregulated by a heat exchanger, the mixture enters a hydropysis reactor to be subjected to a ring-opening reaction; after excess water in an obtained functional caprolactam oligomer melt is removed byan oligomer melt dehydrator, the obtained functional caprolactam oligomer melt enters a front polymerization reactor to be subjected to a polyaddition reaction; after residual water in an obtained functional polyarmide prepolymer melt is removed by a prepolymer melt dehydrator, the obtained functional polyarmide prepolymer melt enters a rear polymerization reactor to be subjected to a polycondensation reaction; and after a caprolactam monomer in an obtained functional polyarmide melt is removed by a thin film evaporative devolatilization system, the obtained functional polyarmide melt is directly conveyed to a spinning manifold to be spun, and thus the functional polyarmide fiber is obtained. The functional powder in the functional polyarmide fiber is highly evenly 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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