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A kind of preparation method of wet process bright acrylic fiber

A bright, wet process technology, applied in the field of wet process bright acrylic fiber and its preparation, can solve problems such as affecting the fiber luster and fiber light transmittance, and achieve the effects of easy control, strong light transmittance and good gloss.

Active Publication Date: 2019-08-20
JILIN QIFENG CHEM FIBER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the process characteristics of wet spinning acrylic fiber, there are grooves on the surface of the fiber and holes in the fiber, which affect the gloss of the fiber and the light transmittance of the fiber. How to reduce the grooves and holes is the solution to the fiber gloss and light transmittance. key

Method used

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  • A kind of preparation method of wet process bright acrylic fiber
  • A kind of preparation method of wet process bright acrylic fiber
  • A kind of preparation method of wet process bright acrylic fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Preparation of polymer: Mix 94wt% acrylonitrile and 6wt% vinyl acetate, adjust the mixed concentration to 35wt%, and carry out continuous suspension in water at 58-62°C and pH 2.5 Polymerization reaction; when the intrinsic viscosity of the reaction system reaches 0.152, the chelation reaction is terminated, and the unreacted monomer is removed by a stripper, and then the salt and water are removed by washing and filtering, and it is obtained by drying after granulation Polyacrylonitrile powder polymer;

[0050] (2) Preparation of spinning stock solution: heat the polyacrylonitrile powdery polymer at 80-90°C to completely dissolve the polymer in dimethylacetamide, and then add water to obtain a spinning stock solution. The concentration of silk stock solution is 25wt%, and the addition of water is 0.5wt% of polyacrylonitrile weight;

[0051] (3) The spinning dope obtained in step (2) is spun in a coagulation bath at a pressure of 0.9 MPa and a temperature of 80 to ...

Embodiment 2

[0053] The technical process and technical parameters of this example for preparing bright acrylic fibers refer to Example 1, the difference is that the retarder is sodium borate, and the amount of sodium borate added is 1.0 wt% of the weight of polyacrylonitrile.

Embodiment 3

[0055] The process and process parameters of this example for preparing bright acrylic fibers refer to Example 1, the difference is that the retarder is zinc sulfate, and the amount of zinc sulfate added is 1.5 wt% of the weight of polyacrylonitrile.

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Abstract

The invention relates to a production method of wet-process super-bright acrylic fibers. The invention includes the following steps: (1) preparing a polymer by means of mixing dual monomers of acrylonitrile and vinyl acetate, performing aqueous suspension polymerization reaction and carrying out treatment after reaction is finished to obtain a polyacrylonitrile powder polymer; (2) preparing a spinning solution by means of dissolving the powder polymer in the step (1) in dimethylacetamide, and filtering to obtain the spinning solution; (3) adding retarder into the spinning solution, performing spinning under the pressure of 0.7-0.9 MPa and at the temperature of 80-97 DEG C, and performing coagulation formation in coagulating bath water solution; (4) subjecting tows to washing, drafting, oil applying, drying, curling and shaping to obtain super-bright acrylic fibers. By improving solution and spinning forming and aftertreatment process conditions, surface grooves and inner holes of fibers are reduced, gloss and light transmittance of fibers are improved, and market demands are satisfied. The production method is simple and feasible, the process is easy to control and the like.

Description

technical field [0001] The invention belongs to the field of textiles, and in particular relates to a wet-process high-gloss acrylic fiber and a preparation method thereof. Background technique [0002] Bright acrylic fiber refers to acrylic fiber with a brighter luster than conventional glossy fiber. It is an important variety of differentiated acrylic fiber. It is widely used in blankets, especially in the artificial fur industry. However, due to the lack of domestic technology, it has not been able to To meet the market demand, the vast majority of bright acrylic fibers rely on imports. [0003] Therefore, the prospect of developing bright acrylic fibers is promising, and at the same time, it also meets people's increasing demand for quality of life, with obvious social benefits and considerable growth potential. However, due to the process characteristics of wet spinning acrylic fiber, there are grooves on the surface of the fiber and holes in the fiber, which affect th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/06D01F6/54D01F1/10C08F220/44C08F218/08
Inventor 邵宝忠张海鸥杨雪峰杨立杰陈卫郝东文徐永强郝朋林段志国刘明哲
Owner JILIN QIFENG CHEM FIBER
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