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Multifunctional heat-insulating and antibacterial elastic silks and silk stockings

An elastic yarn and multi-functional technology, applied in the field of elastic yarn and stockings, can solve the problems of weak binding force and shedding, and achieve the effect of improving tensile strength and elasticity

Pending Publication Date: 2020-09-22
湖南岩拓新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the functional substance is embedded in the fiber, it can overcome the binding force between it and the stocking fiber, but most functional substances can play a relevant role on the surface of the stocking fiber. For example, silver nanoparticles must be in contact with bacteria on the fiber surface to be able to Antibacterial is achieved, but the functional substance embedded on the surface is relatively weaker than the functional substance embedded in the interior due to a part of the exposed fiber, which still has the risk of falling off during washing

Method used

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  • Multifunctional heat-insulating and antibacterial elastic silks and silk stockings

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention relates to multifunctional heat-insulating and antibacterial elastic silks and silk stockings. A preparation method of the elastic silks comprises the following steps that silver nanowires are prepared by a solvothermal method; silver nanowires are added in the process of preparing SiO2 aerogel to prepare silver nanowire aerogel composite powder; the silver nanowire aerogel compositepowder, a silane coupling agent and a small molecule polyisocyanate prepolymer are added as additives to molten thermoplastic polyurethane, and the multifunctional heat-insulating and antibacterial elastic silks are obtained through spinning. The silane coupling agent can further firmly combing the composite powder and the polyurethane, heat-insulating and antibacterial function can be maintainedfor long time, the small molecular polyisocyanate prepolymer is added in the thermoplastic polyurethane spinning process, the small molecular polyisocyanate prepolymer reacts with the breaking substance, and the polyurethane of the linear structure becomes a three-dimensional structure, so that the elasticity is improved.

Description

technical field [0001] The invention relates to a multifunctional heat-preserving and antibacterial elastic silk and silk stockings, in particular to an elastic silk and silk stockings which adopt airgel, silver nanowires and small molecule polyisocyanate prepolymers to realize heat preservation, antibacterial and elasticity improvement. Background technique [0002] Silk stockings generally refer to nylon thin socks, which can modify the feet and legs and increase the aesthetic feeling, so they are favored by consumers. As the market demand increases year by year, stockings with various functions also begin to appear on the market. In addition to retaining the original modification function, according to different occasions, different objects and different environments, stockings also have heat preservation, antibacterial, and antibacterial properties. Odor and high elasticity and other functions. [0003] Chinese patent CN103704890A discloses a sock with thermal insulatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/94D01F1/07D01F1/09D01F1/10A41B11/00A41B17/00
CPCD01F6/94D01F1/103D01F1/10D01F1/09D01F1/07A41B11/00A41B17/00A41B2400/34
Inventor 张丁日卢孟磊杜华军
Owner 湖南岩拓新材料科技有限公司
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