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

A polyamide fiber and production method technology, applied in the field of polymer material synthesis, can solve the problems of difficulty in achieving high uniform dispersion of functional powders and poor spinning performance of functional polyamide melts, so as to improve quality stability and reduce production cost, and the effect of reducing production energy consumption

Active Publication Date: 2019-05-28
CHINESE TEXTILE ACAD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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...

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) The functional powder slurry pre-dispersion made of water, caprolactam and pigment blue 15:3 is continuously transported to the functional powder slurry multi-stage grinding device for grinding and dispersion, wherein water, caprolactam and pigment blue 15:3 The mass ratio is 1:0.8:1.8, and the functional powder slurry multi-stage grinding device is composed of 3 grinding machines connected in series to obtain a functional powder with a pigment blue 15:3 content of 50wt% and an average particle size of 0.28μm slurry;

[0057] (2) The functional powder slurry prepared in step (1) is mixed with the caprolactam melt and the catalyst through a dynamic mixer, and after the temperature is adjusted by a heat exchanger, it enters a hydrolysis reactor for ring-opening reaction, wherein the catalyst is phosphoric acid, catalyst The addition amount is 400ppm of the mass of the caprolactam melt, the addition amount of the functional powder slurry is 5% of the mass of the caprol...

Embodiment 2

[0063] (1) The functional powder slurry pre-dispersion prepared by water, caprolactam and carbon black is continuously transported to the functional powder slurry multi-stage grinding device for grinding and dispersion, wherein the mass ratio of water, caprolactam and carbon black is 1: 0.8:0.77, the functional powder slurry multi-stage grinding device is composed of three grinding machines connected in series to obtain a functional powder slurry with a carbon black content of 30wt% and an average particle size of 0.11 μm;

[0064] (2) The functional powder slurry prepared in step (1) is mixed with the caprolactam melt and the catalyst through a dynamic mixer, and after the temperature is adjusted by a heat exchanger, it enters a hydrolysis reactor for ring-opening reaction, wherein the catalyst is phosphoric acid, catalyst The addition amount is 400ppm of the mass of caprolactam melt, the addition amount of functional powder slurry is 10.7% of the mass of caprolactam melt, the...

Embodiment 3

[0070] (1) The functional powder slurry pre-dispersion prepared by water, caprolactam and pigment red 179 is continuously transported to the functional powder slurry multi-stage grinding device for grinding and dispersion, wherein the mass ratio of water, caprolactam and pigment red 179 is 1:0.5:0.375, the functional powder slurry multi-stage grinding device is composed of two grinding machines connected in series to obtain a functional powder slurry with a pigment red 179 content of 20wt% and an average particle size of 0.28 μm;

[0071] (2) The functional powder slurry prepared in step (1) is mixed with the caprolactam melt and the catalyst through a dynamic mixer, and after the temperature is adjusted by a heat exchanger, it enters a hydrolysis reactor for ring-opening reaction, wherein the catalyst is metaphosphoric acid, catalyst The addition amount of the caprolactam melt is 1000ppm, the addition amount of the functional powder slurry is 9.4% of the caprolactam melt mass,...

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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...

Claims

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Application Information

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IPC IPC(8): D01F6/90D01F1/10C08G69/16
Inventor 邱志成李鑫曲希明姜锋王雪王颖金剑张厚羽马肖赵亮
Owner CHINESE TEXTILE ACAD
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