Antistatic high-strength polyacrylonitrile fiber and preparation method thereof

A polyacrylonitrile fiber, high-strength technology, applied in the manufacture of conductive/antistatic filaments, fiber chemical characteristics, rayon manufacturing, etc., can solve problems such as poor moisture absorption, stuffy and uncomfortable feeling when wearing, and easy generation of static electricity

Pending Publication Date: 2022-05-24
吕建刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, its moisture absorption is poor, it is easy to generate static electricity, and it feels stuffy and uncomfortable to wear. As one of the three major fibers, polyacrylonitrile fiber is widely used in the field of clothing, and its strong static electricity is also a long-standing problem for manufacturers and users. Therefore, the present invention has prepared a polyacrylonitrile fiber with high strength, antistatic and good air permeability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Mix lignin, phenol, sodium hydroxide and deionized water in a mass ratio of 1:2:0.2:0.5 and raise the temperature to 85°C. After reacting for 1 hour, wash with hot water at 70°C until the lotion is neutral. The phenolic lignin was prepared by drying in a vacuum drying oven at 50 °C with a constant weight; azobisisobutyronitrile, dimethyl sulfoxide, acrylonitrile, phenolic lignin, itaconic acid and methacrylic acid were The methyl esters were mixed in a mass ratio of 1:70:90:5:1:2, and the polymerization reaction was stirred at a rate of 20 rpm for 20 h at 55 °C. silk fluid;

[0031] (2) Electrospin the electrospinning solution. During electrospinning, the distance from the syringe to the aluminum foil is 15 cm, the bolus injection rate of the spinning solution is 2 mL / h, the relative humidity is 35%, the temperature is 55 °C, and the two poles The voltage is 15kV, and then γ-ray irradiation is carried out in the air, the irradiation dose is 150KGy, and the irradiat...

Embodiment 2

[0036] (1) Mix lignin, phenol, sodium hydroxide and deionized water in a mass ratio of 1:2.1:0.23:0.5 and raise the temperature to 88°C. After reacting for 1 hour, wash with hot water at 75°C until the lotion is neutral. The phenolic lignin was prepared by drying in a vacuum drying oven at 55 °C with a constant weight; azobisisobutyronitrile, dimethyl sulfoxide, acrylonitrile, phenolic lignin, itaconic acid and methacrylic acid were The methyl esters were mixed in a mass ratio of 3:75:95:8:2:4, and the polymerization reaction was stirred at a rate of 35 rpm for 30 hours at 60 °C. silk fluid;

[0037] (2) Electrospin the electrospinning solution. During electrospinning, the distance from the syringe to the aluminum foil is 18 cm, the bolus injection rate of the spinning solution is 4 mL / h, the relative humidity is 45%, the temperature is 65 °C, and the two poles The voltage is 25kV, and then γ-ray irradiation is carried out in the air, the irradiation dose is 165KGy, and the i...

Embodiment 3

[0042] (1) Mix lignin, phenol, sodium hydroxide and deionized water in a mass ratio of 1:2.2:0.25:0.6 and raise the temperature to 90°C. After reacting for 1.5h, wash with hot water at 80°C until the lotion is neutral. , placed in a vacuum drying oven at 60 °C to dry in a constant weight to obtain phenolic lignin; azobisisobutyronitrile, dimethyl sulfoxide, acrylonitrile, phenolic lignin, itaconic acid and methyl Methyl acrylate was mixed in a mass ratio of 3:80:100:10:3:5, and the polymerization reaction was stirred at a rate of 50 rpm for 40 hours at 65 °C. spinning solution;

[0043] (2) Electrospin the electrospinning solution. During electrospinning, the distance from the syringe to the aluminum foil is 20 cm, the injection speed of the spinning solution is 6 mL / h, the relative humidity is 60%, the temperature is 70 °C, and the two poles The voltage is 30kV, and then γ-ray irradiation is carried out in the air, the irradiation dose is 180KGy, and the irradiation time is ...

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Abstract

The invention discloses an antistatic high-strength polyacrylonitrile fiber and a preparation method thereof, and relates to the technical field of fiber modification. When the anti-static high-strength polyacrylonitrile fiber is prepared, a polyacrylonitrile fiber matrix prepared through electrostatic spinning and irradiation crosslinking is hydrolyzed, then phosphorylated polyvinyl alcohol is introduced, then poly (3-thiopheneacetic acid) hydrogel is coated, and finally freeze drying is conducted to obtain the anti-static high-strength polyacrylonitrile fiber. Phenolated lignin is added into an electrostatic spinning solution, so that the tensile strength of the polyacrylonitrile fiber is enhanced; the phosphorylated polyvinyl alcohol can form a film on the surface of the polyacrylonitrile fiber to enhance the tensile strength of the polyacrylonitrile fiber, the poly (3-thiopheneacetic acid) hydrogel coats the surface of the polyacrylonitrile fiber to enhance the air permeability of the fiber, and then freeze drying is performed, so that the fiber has antistatic property and the air permeability is enhanced.

Description

technical field [0001] The invention relates to the technical field of fiber modification, in particular to an antistatic high-strength polyacrylonitrile fiber and a preparation method thereof. Background technique [0002] Polyacrylonitrile is a high molecular polymer polymerized from acrylonitrile monomer, and polyacrylonitrile fiber refers to a polymer polymerized by polyacrylonitrile or acrylonitrile with a content of more than 85% and one or two other monomers , A kind of synthetic fiber made by spinning, also known as acrylic fiber, has excellent properties such as good fluffiness, good warmth retention, soft hand feeling, anti-moth, anti-mildew, etc., and is widely used in blended or pure spinning; [0003] However, its moisture absorption is poor, it is easy to generate static electricity, and it is stuffy and uncomfortable to wear. As one of the three major fibers, polyacrylonitrile fiber is widely used in the field of wearing, and its extremely strong static electr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/54D01F1/09D01F1/10
CPCD01F6/54D01F1/09D01F1/10Y02P70/62
Inventor 吕建刚
Owner 吕建刚
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