A kind of spinning method of aramid fiber

A fiber and aramid fiber technology, applied in the field of chemical fibers, can solve the problems of high-performance aramid III that cannot be used in bulletproof fields, low density of single-strand yarns, low production efficiency, etc., to reduce equipment investment and increase the number of spinneret holes , the effect of improving production efficiency

Active Publication Date: 2019-07-12
中蓝晨光化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a spinning method of aramid fiber III, which combines specific spinning equipment and specific spinning process, while ensuring the performance of aramid fiber III, and reducing fiber spinning speed. Cost, to solve the problem that the single-ply yarn density of aramid Ⅲ fiber produced by the current wet spinning technology is low, the production efficiency is low, the energy consumption is high, and the production cost is high, which leads to the problem that high-performance aramid Ⅲ cannot be applied in the field of bulletproof

Method used

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  • A kind of spinning method of aramid fiber
  • A kind of spinning method of aramid fiber
  • A kind of spinning method of aramid fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A spinning method of aramid fiber III, said method comprising the steps of:

[0041] A Spinning: the spinning solution enters the spinneret, and extrudes a thin stream of spinning solution through the spinneret;

[0042] B. Primary extraction and coagulation: the fine flow of the spinning solution extruded in step A enters the primary extraction solution for extraction to form colloidal fibers; The organic solvent is extracted from the solvent until the solvent diffusion equilibrium;

[0043] C. Plasticizing and stretching: the colloidal fiber obtained in step B enters the plasticizing and stretching device for stretching and orientation; D, secondary extraction and solidification: the fiber stretched in step C enters the secondary extraction solution for secondary extraction Extract and solidify to form nascent fibers;

[0044] E, washing: the nascent fiber formed in step D enters the washing machine for washing;

[0045] F, heat treatment: after the fibers washed i...

Embodiment 2

[0048] This example is further improved on the basis of the example. This example provides a better composition of the extract, wherein the primary extract is a mixed solution of 1,4-dioxane and water, wherein 1,4 - The mass fraction of dioxane is 55%, and the temperature of the extract is 30°C.

[0049] The secondary extraction solution is a mixed solution of 1,4-dioxane and water, in which the mass fraction of 1,4-dioxane is 30%, and the temperature of the extraction solution is 28°C; The stretching ratio is 3.5 times.

Embodiment 3

[0051] This embodiment is further improved on the basis of Embodiment 1, mainly to provide a new type of washing machine structure and washing method: the washing machine includes several trapezoidal washing walls 3 arranged in sequence, and a trapezoidal washing wall 3 above the trapezoidal washing wall A row of upper washing guide rollers 4 and a row of lower washing guide rollers 5 arranged below the trapezoidal washing wall 3, each upper end of the trapezoidal washing wall 3 is provided with an overflow tank 6, and the as-spun fibers obtained after step E are processed in The guiding function of the upper washing guide roller 4 and the lower washing guide roller 5 is parallel to the slope of the trapezoidal washing wall 3 and close to the slope of the trapezoidal washing wall 3, the washing water in the overflow tank 6 overflows and flows down along the slope of the trapezoidal washing wall 3 , to wash the as-spun fibers close to the trapezoidal washing wall 3. For washing...

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Abstract

The invention provides an aramid fiber III fiber spinning method. The method includes the first step of jetting, the second step of primary extraction and solidification to form gummy fibers, the third step of plastification and drawing, the fourth step of secondary extraction and solidification to form nascent fibers, the fifth step of washing and the sixth step of thermal treatment achieved through a thermal treatment path of an electromagnetic induction heating device to obtain aramid fiber III fibers. In the first step, a spinning jet comprises a rectangular plate surface and a plurality of round spinneret caps on the rectangular plate surface, the rectangular plate surface is provided with a plurality of through holes 11, and the round spinneret caps are embedded in the through holes 11. The method is capable of guaranteeing the property of the aramid fiber III fibers, the fiber spinning cost is reduced, and the problems that a single strand of yarn of aramid fiber III fibers manufactured through a current wet spinning technology is small in density, the production efficiency is low, energy consumption is high, the production cost is high, and high-performance aramid III cannot be used in the bulletproof field are solved.

Description

technical field [0001] The invention relates to a manufacturing technology of heterocyclic aramid fiber, more specifically, the invention relates to a spinning method of aramid III fiber, which belongs to the technical field of chemical fiber. Background technique [0002] Domestic aramid fiber III is a heterocyclic modified aromatic polyamide fiber similar to Russian APMOC fiber. Its comprehensive mechanical properties are more than 30% higher than that of aramid fiber II, and it has better heat resistance and UV protection performance. Ideal material for high-end bulletproof materials. The aramid III polymer is formed by copolymerizing three monomers: terephthaloyl chloride, p-phenylenediamine, 5(6)-amino-2-(4-aminophenyl)benzimidazole. The domestic patent (application number 02133701.2) elaborates on the preparation of aramid III polymer. [0003] At present, the spinning method of aramid fiber III adopts wet spinning technology in China. Due to the complex fiber manuf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D13/00D01D4/02D01D10/06D01D10/02
CPCD01D4/02D01D10/02D01D10/06D01D13/00
Inventor 彭涛刘克杰彭开云王成东王凤德王联合
Owner 中蓝晨光化工有限公司
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