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
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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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