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Nanofiber yarn and continuous yarn forming method thereof

A nanofiber and yarn technology, applied in fiber processing, filament/thread forming, yarn, etc., can solve problems such as poor mechanical strength and easy hairiness, achieve good elastic recovery rate, avoid hairiness, and improve production efficiency Effect

Active Publication Date: 2022-07-08
NANTONG TEXTILE & SILK IND TECH RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and to provide a new production method of nanofiber yarns, which can not only be produced continuously, but also make nanofiber yarns without the aid of other fibers. yarn, so that the nanofiber yarn made can maximize the retention of the excellent properties of nanofibers, and at the same time overcome the problems of hairiness and poor mechanical strength in the yarn forming process of existing nanofibers

Method used

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  • Nanofiber yarn and continuous yarn forming method thereof
  • Nanofiber yarn and continuous yarn forming method thereof

Examples

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Effect test

Embodiment 1

[0038] This example provides a nanofiber yarn and a continuous yarn forming method thereof. The raw material used in this example is polysulfone (PSF) particles (purchased from Dongguan Chuanao Engineering Plastic Materials Co., Ltd., trade name: P-1710).

[0039] In this example, the continuous yarn-forming method includes the following steps: using electrospinning to spin out nanofibers, so that the spun nanofibers are split into 2 parts under the action of 2 electric fields during the movement;

[0040] Further, the electrospinning stock solution used in electrospinning was prepared by the following method: 10 g of polysulfone (PSF) particles were dissolved in 90 g of dimethylacetamide (DMAc) to obtain a mixed solution, which was placed in a magnet and placed in a container. It is sealed and placed in a water bath for high temperature heating. The temperature of the water bath is 80 °C and the heating time is 2 hours. After heating, take it out and let it stand for 0.5 hour...

Embodiment 2

[0059] This example provides a nanofiber yarn and a continuous yarn forming method thereof, which is basically the same as that of Example 1, and the difference is only:

[0060] (1) The electrospinning stock solution was obtained by the following method: 10 g of degummed silk fibroin (SF, purchased from Beijing Yongkang Leye Technology Development Co., Ltd., trade name: SP110) powder was dissolved in 90 g of hexafluoropropanol (HFIP) , get the mixed solution, put it into the magnet, place it in a container for sealing treatment and heat it in a water bath. The temperature of the water bath is 40°C, and the heating time is 5h. After heating, take it out and let it stand for 1h to obtain a mass fraction of 10wt % transparent and homogeneous solution;

[0061] (2) Electrospinning conditions: the voltage is 20kV, the nozzle aperture is 0.4mm, the solution flow rate is 0.5mL / h, and the spinning distance h1 is 25cm;

[0062] (3) The temperature of the two primary-twisting work rol...

Embodiment 3

[0066] This example provides a nanofiber yarn and a continuous yarn forming method thereof, which is basically the same as that of Example 1, and the difference is only:

[0067] (1) The electrospinning stock solution was obtained by the following method: 10 g of polyacrylonitrile (PAN, purchased from Shanghai Aladdin Biochemical Technology Co., Ltd., trade name: P303197) powder was dissolved in 90 g of dimethylformamide (DMF) to obtain Mix the solution, put it into the magnet, seal it in a container and heat it in a water bath at a high temperature. The temperature of the water bath is 70°C, and the heating time is 5h. Transparent and homogeneous solution;

[0068] (2) Electrospinning conditions: the diameter of the nozzle is 0.4mm;

[0069] (3) The rotational speed of the left cluster guide wheel is 200r / min, and the radius of the conductive metal ring is 5cm;

[0070] The speed of the right cluster guide wheel is 100r / min, and the radius of the conductive metal ring is 10...

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Abstract

The invention discloses a nanofiber yarn and a continuous yarn forming method thereof.The continuous yarn forming method comprises the steps that nanofibers are spun through an electrostatic spinning method, and the spun nanofibers are split into n parts under the action of n electric field forces in the movement process; a plurality of bundling guide wheels capable of rotating respectively are adopted to independently collect each part of corresponding nanofiber, and each part of nanofiber is oriented and drafted under the action of the bundling guide wheels to form a nanofiber aggregate attached to the bundling guide wheels; according to the method, a continuous nanofiber cluster is pulled out from a corresponding nanofiber aggregate under the action of external force, the nanofiber clusters are independently subjected to preliminary twisting and then are subjected to mixed twisting, and the nanofiber yarn is obtained. In addition, the prepared nanofiber yarn well retains the excellent performance of the nanofiber, and the problems that hairiness is likely to be generated in the yarn forming process of existing nanofiber, and the mechanical strength is poor are solved.

Description

technical field [0001] The invention belongs to the technical field of textiles, and in particular relates to a nanofiber yarn and a continuous yarn forming method thereof. Background technique [0002] With the rise of nanotechnology, electrospinning technology that can spin nanofibers has received extensive attention since the 1980s. The forming principle of electrospinning is that a charged polymer solution or melt flows in an electrostatic field. When the repulsive force between droplets with the same charge is greater than the surface tension, the droplets can be separated from each other and deformed into a cone shape. After the solution evaporates or the solvent cools, the three-dimensional disordered droplets are collected. Nanoscale fibers are available. The diameter of the fibers obtained by electrospinning is significantly smaller than that obtained by conventional methods. This feature also enables a single fiber to have a larger specific surface area and adsorp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D01D7/00D01H7/00D02G3/02
CPCD01D5/0076D01D5/0092D01D7/00D01H7/00D02G3/02D10B2331/30Y02P70/62
Inventor 刘宇清杨婷杨洋方剑
Owner NANTONG TEXTILE & SILK IND TECH RES INST
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