Production process of colored flat acrylic fiber and production line thereof

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...

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 large, the difficulty of spinning increases, and the color spectrum is less

[0005] To sum up, wet-spun flat acrylic fiber is different from conventional acrylic fiber in all aspects of physical and mechanical properties and dyeing performance, so more improvements are needed in the preparation method to meet the requirements of fur weaving, and there is no literature yet. A kind of production technology and production line of wet spinning colored flat acrylic fiber using NaSCN as solvent

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