Device and method for spinning nanofiber and filament composite yarns
A nanofiber, filament technology, applied in the direction of filament/thread forming, fiber processing, yarn, etc., can solve problems such as easy peeling, and achieve the effect of high strength characteristics
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Embodiment 1
[0028] Embodiment one: the spinning method of nanofiber and long filament composite yarn, adopts following process step:
[0029] (1) Acetone: dimethylacetamide is formulated into a uniform spinning solvent at a volume ratio of 2:1, and cellulose diacetate with a molecular weight distribution of 30,000 and acetylation of 39.8% is dissolved in the spinning solvent, Stirring at room temperature at 25°C for 12 hours to obtain a uniform spinning solution, the mass fraction of cellulose diacetate in the spinning solution was 11%;
[0030] (2) Add the spinning solution to two spinning solution syringes for electrospinning, the distance between the two spinning solution injectors is 15cm, and the distance between the yarn guide and the nanofiber receiving tray is 15cm; spinning The liquid injector is connected to the positive pole of the high-voltage power supply, and the nanofiber receiving plate is connected to the negative pole of the high-voltage power supply; the voltage of the ...
Embodiment 2
[0033] Embodiment two: the spinning method of nanofiber and long filament composite yarn, adopt following process step:
[0034] (1) Dissolve polyacrylonitrile with a relative molecular weight of 75,000 in dimethylacetamide, and stir at room temperature at 28°C for 12 hours to obtain a uniform spinning solution. The mass fraction of polyacrylonitrile in the spinning solution is 10%;
[0035](2) Add the spinning solution into two spinning solution syringes respectively, the distance between the two spinning solution injectors is 10cm, and the distance between the yarn guide and the receiving tray is 10cm; the spinning solution injector is connected to the positive pole of the high voltage power supply , the nanofiber receiving plate is connected to the negative pole of the high-voltage power supply, the electrospinning voltage is 30kV, the spinning speed is 0.5ml / hour, the spinning ambient temperature is 28°C, and the relative humidity of the spinning environment is 50%RH. The ...
Embodiment 3
[0038] Embodiment three: the spinning method of composite yarn of nanofiber and long filament, adopt following process steps:
[0039] (1) Dissolve polylactic acid with an average molecular weight of 10,000 in dichloromethane, and stir at room temperature of 25°C for 12 hours to obtain a uniform spinning solution. The mass fraction of polylactic acid in the solution is 8%;
[0040] (2) Add the spinning solution to two spinning solution injectors respectively, the distance between the two spinning solution injectors is 8cm, the distance between the yarn guide and the nanofiber receiving tray is 8cm; the spinning solution injector is connected to high pressure The positive pole of the power supply, the nanofiber receiving tray is connected to the negative pole of the high-voltage power supply, the electrospinning voltage is 15kV, the spinning speed is 0.8ml / hour, the spinning ambient temperature is 25°C, and the relative humidity of the spinning environment is 60%RH. The nanofibe...
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