Unlock instant, AI-driven research and patent intelligence for your innovation.

Needleless air spinning device for preparing composite nanofibers and working method thereof

A composite nanofiber, needle-free technology, used in fiber processing, stretch spinning, textiles and papermaking, etc., can solve the problem of difficult to meet the batch size of nanofibers, low cost consistency, and limit the core-shell structure nanofiber industry. Chemical application, complex spinning method equipment and other problems, to achieve good application prospects, reduce the cost of cleaning, maintenance and replacement, and save the cost of equipment investment.

Pending Publication Date: 2020-07-24
XI'AN POLYTECHNIC UNIVERSITY
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, each of these three methods has certain problems. The electrostatic spinning method has low output, the needle is easy to block, and there is a danger of high-voltage static electricity; the diameter of the fiber obtained by the melt-blown spinning method is relatively thick, and a high spinning temperature is required; composite spinning The method has complex equipment, long process flow, high temperature and chemical treatment, etc.
These methods are difficult to meet the manufacturing characteristics of nanofibers in batches, low cost, and consistency, which limits the large-area industrial application of core-shell nanofibers.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Needleless air spinning device for preparing composite nanofibers and working method thereof
  • Needleless air spinning device for preparing composite nanofibers and working method thereof
  • Needleless air spinning device for preparing composite nanofibers and working method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The inverted cone rotating body 2 is made of organic engineering plastics, the top radius is 5cm, the bottom liquid outlet radius is 0.5mm, the cone angle is 30°C, the rotation speed of the inverted cone rotating body 2 is 600r / min; the spinning solution for the nuclear layer is The mass fraction is 10% polyacrylonitrile (PAN), and the shell spinning solution is polystyrene (PS) with a mass fraction of 22%; The rate is 0.2ml / min; the coating rate of the shell spinning solution is 0.2ml / min; the temperature of the airflow ejected from the airflow nozzle is 70°C, and the speed is 120m / s. The horizontal distance is 8mm, the vertical distance from the bottom of the liquid outlet at the bottom of the inverted cone rotating body 2 is 3mm, the number of airflow nozzles is 1, the airflow nozzle outlet is circular, and the area of ​​the airflow nozzle outlet is 0.28cm 2 The receiving device 8 is a flat plate receiving device with holes, the number of meshes is 100 meshes, and th...

Embodiment 2

[0044] The inverted cone rotating body 2 is made of organic engineering plastics, the top radius is 5cm, the bottom liquid outlet radius is 0.5mm, the cone angle is 60°C, the rotation speed of the inverted cone rotating body 2 is 500r / min; the spinning solution for the nuclear layer is The mass fraction is 5% nano-titanium dioxide (25nmTiO 2 ), the shell spinning solution is polystyrene (PS) with a mass fraction of 20%; the output pressure of the gas booster system 1 is 0.08MPa, and the outflow rate of the nuclear spinning solution is 0.15ml / min; the shell spinning The coating rate of the liquid is 0.22ml / min; the temperature of the airflow ejected from the airflow nozzle is 80°C, the speed is 150m / s, the horizontal distance between the airflow nozzle and the center line of the inverted cone rotating body 2 is 10mm, and The vertical distance from the bottom of the bottom liquid outlet is 5mm, the number of air nozzles is 1, and the air outlet of the air nozzle is circular with...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
angleaaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a needleless air spinning device for preparing composite nanofibers and a working method thereof and belongs to the technical field of nano material manufacturing. An inner cavity of an inverted cone rotating body communicates with a gas boosting system and a core-layer spinning solution supply system, and the gas boosting system is used for applying pressure to a core-layer spinning solution in the inner cavity of the inverted cone rotating body; a liquid outlet is formed at the bottom of the inverted cone rotating body, the top of the inverted cone rotating body is connected with an end cover through a rotary sealing structure, and the inverted cone rotating body is connected with a rotary power system; a shell spinning solution coating system is arranged directlyfacing the outer conical surface of the inverted cone rotating body; and a high-temperature high-speed airflow jet system and a receiving device are respectively oppositely arranged on the two sidesof the liquid outlet at the bottom of the inverted cone rotating body. The structure design is reasonable, the process flow is short, the core-shell structure composite nanofibers with different structures and performances can be obtained, the efficiency is high, the yield is high, and the application prospect is good.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial manufacturing, and in particular relates to a needle-free air spinning device for preparing composite nanofibers and a working method thereof. Background technique [0002] Functional fibers with special structures have many excellent and unique properties, and have potential value in many application fields. With the rapid development of nanotechnology, the preparation technology of nanofibers has become one of the important pillars to promote the progress of fiber science and technology. The core-shell structure nanofibers that combine multiple materials in the axial direction are formed by multi-component fibers with inner and outer layers. Compared with single-spun nanofibers, they are more functional, mechanical, and stable. more excellent. For example, if the core material is removed, hollow microfibers can be obtained. In addition, the polymer with good spinnability is used as the s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/34D01D5/14
CPCD01D5/34D01D5/14
Inventor 窦皓匡坤斌王峰樊威黎云玉本德萍
Owner XI'AN POLYTECHNIC UNIVERSITY