Production process of colored flat acrylic fiber and production line thereof

A production process and flat technology, applied in the production process of colored flat acrylic fiber and its production line, can solve the problems of less color spectrum, increased spinning difficulty, large particle size, etc., to solve uneven dyeing and looseness Excellent effect

Inactive Publication Date: 2010-12-22
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are many problems: the glass transition temperature of acrylic fiber in a humid heat state is 70-80°C, so the temperature rise during dyeing must be strictly controlled, and a dyeing accelerator or a dyeing retarder must be added according to the depth of the dyed color.
CN117004C, CN1523161, CN1465758A explain that there are pigments that need to be ground in the stock solution coloring method, the particle size of the pigment particles in the colored stock solution is

Method used

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  • Production process of colored flat acrylic fiber and production line thereof
  • Production process of colored flat acrylic fiber and production line thereof
  • Production process of colored flat acrylic fiber and production line thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0111] Acrylonitrile copolymer composed of acrylonitrile, methyl acrylate and sodium styrene sulfonate. Bulk feed concentration is 33%, and reaction temperature is 56 ℃, and reaction time is 53 minutes, and oxidizing agent is sodium chlorate, and consumption is 0.5wt% of total unit, and reducing agent is sodium metabisulfite, and reducing agent and oxidizing agent mol ratio are 1.45. After the polymerization reaction, the slurry was desingled under a vacuum of 57Kpa, washed at a vacuum of 55kPa and a temperature of 50°C, and then diluted to a concentration of 35%. After dissolving in NaSCN solution, the air bubbles were removed under the condition of vacuum degree of 8kPa and temperature difference of 22°C, and the spinning stock solution with total solid content of 12% was obtained by filtration. The spinning dope is coagulated into as-spun fibers in a coagulation bath with a sodium thiocyanate concentration of 14.0wt% and a temperature of 1.0°C through a spinneret of special...

Embodiment 4～6

[0113] Acrylonitrile copolymer composed of acrylonitrile, methyl methacrylate and sodium vinyl sulfonate, the comonomer ratio composition is acrylonitrile: methyl acrylate: sodium vinyl sulfonate = 90.8: 8.8: 0.4, the total The polymerization monomer feed concentration is 34%, the reaction temperature is 55°C, the reaction time is 54 minutes, the oxidizing agent is potassium persulfate, and the consumption is 0.6wt% of the total bill, the reducing agent is sodium bisulfite, the reducing agent and the oxidizing agent molar ratio is 1.55. After the polymerization reaction, the slurry was separated under a vacuum of 55Kpa, washed at a vacuum of 60kPa and a temperature of 51° C., and then diluted to a concentration of 34.7%. After dissolving in NaSCN solution, remove air bubbles under the conditions of vacuum degree of 7kPa and temperature difference of 21°C, and filter to obtain a spinning stock solution with a total solid content of 11.8%. The spinning dope is coagulated into a...

Embodiment 7～9

[0115] Acrylonitrile copolymer composed of acrylonitrile, vinyl acetate and sodium methacryl sulfonate. The bulk feed concentration is 35%, the reaction temperature is 54°C, the reaction time is 56 minutes, the oxidizing agent is ammonium persulfate, and the consumption is 0.55wt% of the total bill, the reducing agent is sodium bisulfite, and the reducing agent and oxidizing agent molar ratio is 1.5 . . After the polymerization reaction, the slurry was separated under a vacuum of 52Kpa, washed at a vacuum of 58kPa and a temperature of 53°C, and then diluted to a concentration of 34.0%. After dissolving in NaSCN solution, remove air bubbles under the conditions of vacuum degree of 5kPa and temperature difference of 20°C, and filter to obtain a spinning stock solution with a total solid content of 11%. The spinning dope is coagulated into as-spun fibers in a coagulation bath with a sodium thiocyanate concentration of 15.0wt% and a temperature of 3.0°C through a spinneret of sp...

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PUM

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Abstract

The invention relates to a production process of colored flat acrylic fiber and a production line thereof, which are a production process and a production line thereof for producing the colored flat acrylic fiber in a plurality of color systems with vivid colors, little chromatic aberration and great flatness by adopting a cationic dye, in particular to a spinning production line for producing the colored flat acrylic fiber by adopting a ternary aqueous suspension polymerization and sodium sulfocyanate wet method. In the invention, a long-strip arc dye liquor spray head is used for dying, and the long-strip arc dye liquor spray head is an arc spray head which comprises a spray head seat, a spray head cover and a dye liquor inlet pipe and has a hollow T-shaped cross section, wherein the spray head is a long-strip semi-cylindrical surface, and a plurality of penetrative spraying holes are arranged on the spray head cover in a staggered way. The invention overcomes the defects of stripy and uneven dyeing, great chromatic aberration, large volume of colored wastewater, long product processing period, and the like commonly existing in a production process and a production line thereof for producing white flat acrylic fiber by adopting a traditional dyeing mode of steaming loose fibers at a high temperature.

Description

technical field [0001] The invention relates to a production process and a production line for colored flat acrylic fibers using cationic dyes to produce multi-color, bright colors, small color difference and high flatness, in particular to the use of ternary aqueous phase suspension polymerization and sodium thiocyanate The wet spinning production line produces colored flat acrylic fiber to make up for the color flower, uneven dyeing, large color difference, large amount of colored sewage, and product processing The production process and its production line with shortcomings such as long cycle time. Background technique [0002] Since the flat acrylic fiber is an important raw material for artificial fur, the cross section of the fiber is similar to that of animal hair, which has a strong imitation of animal hair, excellent resilience, special luster, excellent bulkiness and pilling resistance. Coarse denier flat acrylic fibers form the face fleece, and fine denier flat a...

Claims

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Application Information

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IPC IPC(8): D01F6/38D06P3/70D06P1/00C08F220/44C08F2/38C08F2/18C08F4/40D01D1/02D01D1/10D01D5/06D01D5/14D01D5/253D01D13/00D06B1/02
Inventor 徐静王华平
Owner DONGHUA UNIV
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