Preparation method of stock solution colored porous regenerated fibers

A technology for regenerated fiber and dope coloring, applied to artificial filaments in cellulose solution, chemical post-treatment of cellulose/protein artificial filaments, adding pigments to spinning solution, etc., can solve the problems of poor antistatic performance and moisture absorption Poor performance, accumulated static electricity and other problems, to achieve the effect of easy operation, simple process, and solve the damage

Inactive Publication Date: 2019-03-22
WUHE JIANGSU COMPOSITE MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Since the advent of synthetic fibers, they have been valued by the textile industry for their light weight, high strength, good elasticity, mildew and insect resistance, and other excellent properties. However, compared with traditional natural fibers, synthetic fibers also have some obvious defects, such as Poor hygroscopicity, poor antistatic performance, difficult dyeing, etc., which limit the application of some synthetic fibers in the field of textile and clothing to a certain extent
Take polyacrylonitrile fiber as an example. As one of the three major synthetic fibers, although it has softness and warmth similar to wool, it is easy to accumulate static electricity and difficult to dye.

Method used

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  • Preparation method of stock solution colored porous regenerated fibers
  • Preparation method of stock solution colored porous regenerated fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for preparing dope dyed porous regenerated fibers, specifically comprising the following steps:

[0030] 1) Preparation of spinning dope: Before dissolving, put the lint pulp cellulose with a degree of polymerization of 1000 in an oven at 80°C and dry until the weight is constant, then dissolve the cellulose at -10°C by 8wt% In the alkaline aqueous solution that sodium hydroxide, 2wt% lithium hydroxide and 10wt% ammonia water form, make the cellulose solution of 8wt%;

[0031] 2) Preparation of color paste: adding cinnabar with a fineness of 0.05 μm into an aqueous solution with a mass fraction of 3% polyvinyl alcohol, and ultrasonically dispersing for 5 hours to obtain a uniform color paste solution with a solid content of 30%;

[0032] 3), preparation before spinning: mix the spinning stock solution and the color paste solution into the stirring tank, the amount of the color paste is calculated as 1% based on the mass percentage of the colored solid matter in...

Embodiment 2

[0036] A method for preparing dope dyed porous regenerated fibers, specifically comprising the following steps:

[0037] 1) Preparation of spinning dope: Before dissolving, put the cotton linter pulp cellulose with a degree of polymerization of 800 in an oven at 80°C and dry until the weight is constant, then dissolve the cellulose in -5°C with 5wt% In the alkaline aqueous solution that sodium hydroxide, 3wt% lithium hydroxide and 8wt% ammonia water form, make the cellulose solution of 5wt%;

[0038] 2) Preparation of color paste: add malachite green with a fineness of 0.01 μm to an aqueous solution with a mass fraction of 1% sodium carboxymethyl cellulose, and disperse ultrasonically for 4 hours to obtain a uniform color paste with a solid content of 10% solution;

[0039] 3), pre-spinning preparation: mix the spinning stock solution and the color paste solution into the stirring tank, the amount of the color paste added is 0.5% based on the mass percentage of the colored so...

Embodiment 3

[0043] A method for preparing dope dyed porous regenerated fibers, specifically comprising the following steps:

[0044]1) Preparation of spinning dope: Before dissolving, put wood pulp pulp cellulose with a degree of polymerization of 1200 in an oven at 80°C and dry until the weight is constant, and then dissolve the cellulose at -15°C by 10wt% In the alkaline aqueous solution that sodium hydroxide, 1wt% lithium hydroxide and 12wt% ammonia water form, make the cellulose solution of 10wt%;

[0045] 2) Preparation of color paste: adding copper oxide with a fineness of 0.08 μm into an aqueous solution with a mass fraction of 5% polyvinylpyrrolidone, and ultrasonically dispersing for 3 hours to obtain a uniform color paste solution with a solid content of 50%;

[0046] 3), preparation before spinning: mix the spinning stock solution and the color paste solution into the stirring tank, the amount of the color paste is calculated as 1.5% based on the mass percentage of the colored ...

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Abstract

The invention belongs to the technical field of preparation of regenerated fibers and in particular relates to a preparation method of stock solution colored porous regenerated fibers. The preparationmethod comprises the following steps: 1) preparing a spinning stock solution; 2) preparing color paste; 3) doing preparation before spinning; 4) molding fibers; 5) carrying out post-treatment on thefibers. According to the preparation method of the stock solution colored porous regenerated fibers provided by the invention, prepared pigment color paste is added into a cellulose spinning solutionand is uniformly stirred; then colored porous regenerated cellulose fibers are prepared through wet-process spinning and fiber post-treatment; damages, caused by dyeing of a dyestuff, to the fibers are solved through the fibers prepared by the preparation method; the utilization rate of a pigment is improved, and the washing fastness and the color fastness to sunlight of the colored fibers are greatly improved; the fibers have good solvent resistance and migration resistance and meet the downstream utilization requirements of cellulose fiber products; the preparation method has the advantagesof simple process, environment friendliness and no pollution, easiness for operation, low energy consumption and easiness for controlling large-scale production.

Description

technical field [0001] The invention belongs to the technical field of regenerated fiber preparation, and in particular relates to a method for preparing dope-colored porous regenerated fiber. Background technique [0002] Since the advent of synthetic fibers, they have been valued by the textile industry for their light weight, high strength, good elasticity, mildew and insect resistance, and other excellent properties. However, compared with traditional natural fibers, synthetic fibers also have some obvious defects, such as Poor hygroscopicity, poor antistatic performance, and difficult dyeing, etc., limit the application of some synthetic fibers in the field of textile and clothing to a certain extent. Take polyacrylonitrile fiber as an example. As one of the three major synthetic fibers, although it has softness and warmth retention properties similar to wool, it is easy to accumulate static electricity and difficult to dye. Due to the reduction of arable land and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/02D01F1/04D01F11/02
CPCD01F1/04D01F2/02D01F11/02
Inventor 乔卫星
Owner WUHE JIANGSU COMPOSITE MATERIALS CO LTD
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