Flat acrylic fiber and production method thereof

A technology of acrylic fiber and production method, applied in fiber processing, fiber chemical characteristics, wet spinning method, etc., can solve the problems of general resilience and general simulation effect of flat acrylic fiber, and achieve soft hand feeling, good spinnability, and hand feeling. good effect

Active Publication Date: 2014-06-25
NINGBO ZHONGXIN ACRYLIC FIBERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The obtained flat acrylic fiber is only suitable for the flat acrylic fiber with a single filament fiber of 3.33dtex and a total denier of 91Ktex, and the flat acrylic fiber has a general simulation effect and a general resilience

Method used

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  • Flat acrylic fiber and production method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: preparation fiber is the flat acrylic fiber of 3D

[0034] Spinning forming: Copolymerize 91-94% of acrylonitrile and 6-9% of vinyl acetate under the catalysis of persulfate and sulfite to make polyacrylonitrile dry powder with a molecular weight of 60,000-100,000. The acrylonitrile dry powder is dissolved in the solvent dimethylacetamide to form a stock solution with a concentration of 20-25%. The stock solution is heated to 82-90°C by a heater, and the heated stock solution is extruded from the rectangular hole of the spinneret. In the coagulation bath, primary fibers are formed by double diffusion; wherein, the temperature of the stock solution when entering the coagulation bath is 80-90°C, the temperature of the coagulation bath is 30-45°C, and the concentration of the solvent dimethylacetamide in the coagulation bath is 30- 50%, the circulation volume is 28-35kL / h. The spinneret is a rectangular plate with a length of 113 mm and a width of 55 mm. The...

Embodiment 2

[0038] Embodiment 2: preparation fiber is the flat acrylic fiber of 5D

[0039] Spinning forming: Copolymerize 91-94% acrylonitrile and 6-9% vinyl acetate under the catalysis of persulfate and sulfite to make polypropylene dry powder with a molecular weight of 60,000-100,000. Polypropylene The dry powder is dissolved in the solvent dimethylformamide to form a stock solution with a concentration of 20-25%. The stock solution is heated to 82-90°C by a heater, and the heated stock solution is extruded from the rectangular hole of the spinneret. The primary fibers are formed by double diffusion in the bath; wherein, the temperature of the stock solution when entering the coagulation bath is 80-90°C, the temperature of the coagulation bath is 30-45°C, and the concentration of the solvent dimethylacetamide in the coagulation bath is 30-50% , the circulation volume is 28-35kL / h. The spinneret is a rectangular plate with a length of 113 mm and a width of 55 mm. The length of the rect...

Embodiment 3

[0043] Embodiment 3: preparation fiber is the flat acrylic fiber of 17D

[0044] Spinning forming: Copolymerize 91-94% acrylonitrile and 6-9% vinyl acetate under the catalysis of persulfate and sulfite to make polypropylene dry powder with a molecular weight of 60,000-100,000. Polypropylene The dry powder is dissolved in the solvent dimethylformamide to form a stock solution with a concentration of 20-25%. The stock solution is heated to 82-90°C by a heater, and the heated stock solution is extruded from the rectangular hole of the spinneret. The primary fibers are formed by double diffusion in the bath; wherein, the temperature of the stock solution when entering the coagulation bath is 80-90°C, the temperature of the coagulation bath is 30-45°C, and the concentration of the solvent dimethylacetamide in the coagulation bath is 30-50% , the circulation volume is 28-35kL / h. The spinneret is a rectangular plate with a length of 113 mm and a width of 55 mm, the aspect ratio of t...

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Abstract

The invention relates to a flat acrylic fiber and a production method thereof. The flat acrylic fiber consists of the following components in percentage by weight: 91-94 percent of acrylonitrile and 6-9 percent of vinyl acetate, wherein the length-width ratio of the flat acrylic fiber is (2-13):1. The method for producing the flat acrylic fiber comprises the following steps: carrying out copolymerization reaction on the acrylonitrile and the vinyl acetate to prepare dried polyacrylonitrile powder, dissolving the powder in a solvent to form a stock solution, extruding from a rectangular hole of a spinneret plate after heating, and performing double diffusion to form a nascent fiber in a coagulating bath; washing the nascent fiber by water, and drawing the fiber through a drawing machine; oiling tows; and drying the tows and setting, so as to obtain the flat acrylic fiber. The contents of the acrylonitrile and the vinyl acetate in a copolymer, the molecular weight of the copolymer and a specific process flow are adjusted, so that the prepared flat acrylic fiber is good in handfeel, the softness and handfeel of the fiber can be improved, the rebound resilience, hydrophobicity and spinnability of the fiber can be guaranteed, and the acrylic fiber is easy to color.

Description

technical field [0001] The invention relates to an acrylic fiber, in particular to a flat acrylic fiber and a production method thereof. Background technique [0002] Acrylic fiber is the trade name of polyacrylonitrile fiber in our country. Acrylic has excellent performance, soft and warm to the touch, and has good elasticity. Light fastness and weather resistance are particularly good. Generally made into short fibers. Can be spun pure or blended with wool. It is used to make textiles, knitwear, blankets, tents, curtains and filter cloths, etc. Because its properties are close to wool, it is called "synthetic wool". Flat acrylic fiber is a kind of acrylic fiber whose cross-section is rectangular or close to rectangular. Flat acrylic fiber has special luster, bulkiness and anti-pilling performance, and has good post-processing effect. It feels like touching feathers and animal fur, so it is mainly used as artificial fur, plush toys, interior decoration and decorative m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/40D01D4/02D01D5/06D01D5/253D01D10/02
Inventor 邱海昌孙晓波韩顺利李滨赵巍魏庆坡
Owner NINGBO ZHONGXIN ACRYLIC FIBERS
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