Composite fiber of polyacrylonitrile-sodium alginate, and preparation method

A technology of polyacrylonitrile and sodium alginate, applied in the direction of alginate artificial filament, conjugated synthetic polymer artificial filament, etc., can solve the problem of human body affinity, poor hydrophilicity, carboxymethyl The problem of high cost of chitosan can achieve the effect of improving human affinity, reducing pilling and increasing dyeability

Inactive Publication Date: 2006-11-22
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyacrylonitrile also has many disadvantages: poor hydrophilicity, easy to charge static electricity in dry weather and poor human affinity
However, the production of viscose fiber is easy to cause environmental pollution, and the cost of carboxymethyl chitosan is high, which restricts its development.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A polyacrylonitrile-sodium alginate composite fiber, the composite fiber is composed of sodium alginate and polyacrylonitrile, sodium alginate accounts for 1% of the solid content of the composite fiber, and polyacrylonitrile accounts for 99% of the solid content of the fiber.

[0023] The polyacrylonitrile was made into a spinning solution with a concentration of 11%, and then mixed with sodium alginate at a ratio of 100:1, stirred evenly, and then left to stand for 12 hours for defoaming.

[0024] The spinning solution enters the spinning hole through the metering pump and is sprayed out. Enter the first coagulation bath, the content of sodium thiocyanate in the coagulation bath is 9%, calcium chloride 1%, and temperature is 20 ℃. Then enter the second coagulation bath for pre-stretching. The coagulation bath is a 3% sodium thiocyanate aqueous solution, and the bath temperature is 50° C. and the stretching ratio is 1 time. After steam stretching, the stretching tempe...

Embodiment 2

[0026] A polyacrylonitrile-sodium alginate composite fiber, characterized in that: the composite fiber is composed of sodium alginate and polyacrylonitrile, sodium alginate accounts for 10% of the solid content of the composite fiber, and polyacrylonitrile accounts for 10% of the solid content of the fiber. 90% of.

[0027] The polyacrylonitrile is made into a spinning solution with a concentration of 13%, and then mixed with sodium alginate at a ratio of 100:4, stirred evenly, and then left to stand for 12 hours for defoaming.

[0028] The spinning solution enters the spinning hole through the metering pump and is sprayed out. Enter the first coagulation bath, the content of sodium thiocyanate in the coagulation bath is 2%, calcium nitrate 1%, and temperature is 30 ℃. Then go through the second coagulation bath to carry out pre-stretching, the coagulation bath is 9% sodium thiocyanate aqueous solution, the temperature is 50 DEG C, and the stretching ratio is 3 times. After ...

Embodiment 3

[0030] A polyacrylonitrile-sodium alginate composite fiber, characterized in that: the composite fiber is composed of sodium alginate and polyacrylonitrile, sodium alginate accounts for 20% of the solid content of the composite fiber, and polyacrylonitrile accounts for 20% of the solid content of the fiber. 80% of.

[0031] Polyacrylonitrile is made into a spinning solution with a concentration of 25%, and then mixed with sodium alginate at a ratio of 100:2, stirred evenly, and then left to stand for 12 hours for defoaming.

[0032] The spinning solution enters the spinning hole through the metering pump and is sprayed out. Enter the first coagulation bath, the content of sodium thiocyanate in the coagulation bath is 9%, calcium nitrate 1%, and temperature is 20 ℃. Then go through the second coagulation bath for pre-stretching, the coagulation bath is 2% sodium thiocyanate aqueous solution, the temperature is 50° C., and the stretching ratio is 3 times. After steam stretchin...

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PUM

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Abstract

The invention discloses a polyacrylonitrile-sodium alginate composite fiber. The composite fiber is composed of sodium alginate and polyacrylonitrile, sodium alginate accounts for 1-20% of the solid content of the composite fiber, and polyacrylonitrile accounts for 80-99% of the solid content. It also discloses its manufacturing method, including the following steps: 1. Dissolving polyacrylonitrile in a solvent to prepare a polyacrylonitrile solution with a content of 11-18%. 2. Add sodium alginate to the polyacrylonitrile solution in an amount of 1 to 20% of the dry weight of polyacrylonitrile to form a polyacrylonitrile-sodium alginate spinning solution, and let it stand for defoaming. 3. After the spinning solution obtained in step b is sprayed through the spinneret holes, it enters the coagulation bath for solidification and molding, and then goes through conventional processes such as drawing, crimping, shaping, and drying to make finished products. The beneficial effects of the invention are: improving the human affinity of the polyacrylonitrile fiber, endowing the fiber with special antibacterial and antipruritic effects, increasing the dyeability of the polyacrylonitrile fiber, and reducing the pilling property of the polyacrylonitrile fiber.

Description

technical field [0001] The invention relates to a composite material and a manufacturing method thereof, in particular to a polyacrylonitrile-sodium alginate composite fiber and a manufacturing method thereof. Background technique [0002] Polyacrylonitrile fiber, commonly known as acrylic fiber, is a synthetic fiber with excellent warmth retention, excellent dyeability, and no moth and mildew properties. After dyeing, it can obtain brighter colors than wool. Polyacrylonitrile is widely used. It is used to make wool-like products, so polyacrylonitrile is also called artificial wool. However, polyacrylonitrile also has many disadvantages: poor hydrophilicity, resulting in easy static charge in dry weather and poor human affinity. Sodium alginate is used as a printing aid, which makes the printed pattern clear, bright, high color yield and good hand feeling. By adding sodium alginate, the hairiness of the fiber can also be reduced. [0003] In order to improve the performan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/08D01F9/04
Inventor 高阔李慧沈新元
Owner DONGHUA UNIV
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