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Device and method for spinning nanofiber and filament composite yarns

A nanofiber and filament technology, applied in the direction of filament/thread forming, fiber treatment, yarn, etc., can solve problems such as easy peeling, and achieve the effect of high strength characteristics

Active Publication Date: 2013-02-06
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Nanofibers are easy to adhere to the filaments due to their good adhesion properties and surface adsorption, but they are also easy to peel off

Method used

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  • Device and method for spinning nanofiber and filament composite yarns

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: The spinning method of nanofiber and filament composite yarn adopts the following process steps:

[0029] (1) Mix acetone:dimethylacetamide into a uniform spinning solvent at a volume ratio of 2:1, and dissolve cellulose diacetate with a molecular weight distribution of 30,000 and an acetylation of 39.8% in the spinning solvent. Stir at 25°C for 12 hours at room temperature to obtain a uniform spinning solution. The mass fraction of cellulose diacetate in the spinning solution is 11%;

[0030] (2) Add the spinning solution to the two spinning solution injectors for electrospinning. The distance between the two spinning solution injectors is 15cm, and the distance between the yarn guide and the nanofiber receiving plate is 15cm; spinning The liquid injector is connected to the positive electrode of the high-voltage power supply, and the nanofiber receiving plate is connected to the negative electrode of the high-voltage power supply; the electrospinning voltage ...

Embodiment 2

[0033] Embodiment 2: The spinning method of nanofiber and filament composite yarn adopts the following process steps:

[0034] (1) Dissolve polyacrylonitrile with a relative molecular mass of 75000 in dimethylacetamide and stir for 12 hours at 28°C at room temperature to obtain a uniform spinning solution. The mass fraction of polyacrylonitrile in the spinning solution is 10%;

[0035] (2) Add the spinning solution to the two spinning solution injectors separately, the distance between the two spinning solution injectors is 10cm, the distance between the yarn guide and the receiving plate is 10cm; the spinning solution injector is connected to the positive electrode of the high-voltage power supply , The nanofiber receiving plate is connected to the negative electrode of the high-voltage power supply, the electrospinning voltage is 30kV, the spinning speed is 0.5ml / h, the spinning environment temperature is 28℃, the relative humidity of the spinning environment is 50%RH, the nanofi...

Embodiment 3

[0038] Embodiment 3: The spinning method of nanofiber and filament composite yarn adopts the following process steps:

[0039] (1) Dissolve polylactic acid with an average molecular weight of 10,000 in dichloromethane and stir for 12 hours at 25°C and room temperature to obtain a uniform spinning solution. The mass fraction of polylactic acid in the solution is 8%;

[0040] (2) Add the spinning solution to the 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 plate is 8cm; the spinning solution injector is connected to high pressure The positive pole of the power supply, the nanofiber receiving plate is connected to the negative pole of the high-voltage power supply, the electrospinning voltage is 15kV, the spinning speed is 0.8ml / h, the spinning environment temperature is 25℃, and the relative humidity of the spinning environment is 60%RH. The distance betwe...

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Abstract

The invention relates to a device for spinning a nanofiber and filament composite yarn; the device is characterized by comprising a left side spinning solution injector and a right side spinning solution injector, wherein the left side spinning solution injector and the right side spinning solution injector are connected with a high voltage power supply anode; receiving plates are connected with a high voltage power supply cathode; a left side filament leading-in device and a right side filament leading-in device are arranged on external sides of a left side receiving plate and a right side receiving plate; and winding devices are arranged below the left side receiving plate and the right side receiving plate. The device for spinning the nanofiber and filament composite yarn, provided by the invention, has the following technical steps of: (1) carrying out electrostatic spinning; (2) leading in filaments to the two nanofiber receiving plates during electrostatic spinning, so that the nanofibers adhere to the two filaments; and (3) twisting and combining the two filaments, so as to obtain the nanofiber and filament composite yarn. According to the invention, the obtained nanofiber and filament composite yarn has the advantages of ultrahigh specific surface area of the nanofiber and high-strength characteristic of the filament.

Description

Technical field [0001] The invention relates to a composite yarn spinning method, in particular to a spinning device and a spinning method of a nanofiber and filament composite yarn, and belongs to the technical field of composite yarn production. Background technique [0002] Electrospinning technology is an effective method for preparing nano-scale fibers and fiber membranes. However, the extremely low strength of nano-fibers and nano-fiber membranes is an important obstacle to their further application in related industrial fields. The strength of filaments, especially nylon filaments, is one of the popular features in industrial applications. If the nano effect of electrospinning nanofibers and the strength of filaments can be effectively combined to produce a new type of nano / filament composite yarn, it will open up new areas of industrial application of nanofibers. [0003] Electrospinning technology is a spinning technology that produces nano-scale fibers by applying an ele...

Claims

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Application Information

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IPC IPC(8): D02G3/22D01D5/00
Inventor 杨瑞华杨广磊高卫东王鸿博
Owner JIANGNAN UNIV
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