Multifunctional thermal-insulation antibacterial elastic yarn and silk stockings
A multifunctional and elastic yarn technology, which is applied in the manufacture of conductive/antistatic filaments, socks, pantyhose, etc., can solve problems such as shedding and weak bonding force, and achieve the effect of improving elasticity and tensile strength
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Embodiment 1
[0030] 1) Preparation of silver nanowires by solvothermal method:
[0031] In step 1), polyvinylpyrrolidone is uniformly dispersed in ethylene glycol by magnetic stirring to form a solution with a mass fraction of 4%, and ferric chloride and silver nitrate are dispersed in ethylene glycol respectively to form a mass fraction of 0.8% solution, quickly add 10mL ferric chloride and silver nitrate solutions to 150mL polyvinylpyrrolidone solution and stir evenly to form a dispersion, with an interval of no more than 1 minute; transfer the dispersion to a polytetrafluoroethylene reactor In 100°C, the reaction was incubated at 100° C. for 8 h, cooled at room temperature, centrifuged, and the supernatant liquid was discarded, washed three times with deionized water and ethanol to obtain silver nanowires. The silver nanowires have an average diameter of 112 nanometers and an average length of 1.2 microns.
[0032] 2) Preparation of silver nanowire airgel composite powder:
[0033] In...
Embodiment 2
[0037] The silver nanowire airgel composite powder prepared in Example 1 is used for spinning:
[0038] The thermoplastic polyurethane is dried and sliced, and then sent into a screw extruder with silver nanowire airgel composite powder and silane coupling agent KH550 to form a polyurethane melt at 220°C, and then added toluene diisocyanate trimer to obtain Mixed melt; wherein, the mass ratio of thermoplastic polyurethane, silver nanowire airgel composite powder, KH550, and toluene diisocyanate trimer is 100:0.5:1:5; the mixed melt is extruded by a screw extruder and Transport to the spinning position of the spinning box; use the spinning pump to quantitatively and evenly press the mixed melt to the spinneret with a pore size of 100 microns, and the fine stream of the mixed melt is extruded from the small hole of the spinneret, and the mixture melts at room temperature in the tunnel. Cooling makes multifunctional thermal insulation and antibacterial elastic yarn.
Embodiment 3
[0040] The silver nanowire airgel composite powder prepared in Example 1 is used for spinning:
[0041] After the thermoplastic polyurethane is dried, it is sliced, and then it is sent into the Screw extruder, forming polyurethane melt at 220°C, and then adding toluene diisocyanate trimer to obtain a mixed melt; among them, thermoplastic polyurethane, silver nanowire airgel composite powder, KH550, toluene diisocyanate trimer, The mass ratio of the plasticizer is 100:0.1:5:10:0.5; the mixed melt is extruded by the screw extruder and transported to the spinning position of the spinning box; the mixed melt is quantitatively and evenly pressed by the spinning pump To the spinneret with a hole diameter of 100 microns, the fine stream of mixed melt is extruded from the small hole of the spinneret, and cooled at room temperature in the tunnel to make a multifunctional thermal insulation antibacterial elastic yarn.
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