Magnetic control nano-forming micromechanical device and three-dimensional fiber forming method

Abstract

The invention discloses a magnetic control nano-forming micromechanical device and a three-dimensional fiber forming method. The magnetic control nano-forming micromechanical device comprises a magnetic fluid preparation device for generating magnetic fluid, a three-dimensional control nano-stage for fixing the magnetic fluid preparation device, a working platform positioned below the magnetic fluid preparation device and a strong magnet positioned below the working platform. According to the magnetic control nano-forming micromechanical device and the spinning three-dimensional forming method, based on the magnetic spinning forming principle, the magnetic fluid extruded from a feeding nozzle of the magnetic fluid preparation device forms a liquid bridge under the action of the magnetic field of the strong magnet, and the liquid bridge is solidified to form nanofiber fibers. As the relative position between the feeding nozzle of the magnetic fluid preparation device and the strong magnet can be accurately controlled via the three-dimensional control nano-stage, three-dimensional fibers meeting the set arrangement requirements can be prepared based on the set forming track. The device has the characteristics of being easy to operate and high in control precision, can meet requirements of industrial quantitative production, and has a good application prospect in the field.

Description

technical field [0001] The invention belongs to the technical field of spinning and forming, and relates to a magnetically controlled nano-forming micromechanical device and a spinning three-dimensional forming method based on magnetic principles for spinning and forming. Background technique [0002] Rapid prototyping (RP) technology is an advanced manufacturing technology developed in the 1990s. It is a key common technology for the development of new products for manufacturing companies. Improving product competitiveness has a positive role in promoting. The existing working principles include 3DP technology, SLA stereolithography technology, SLS selective laser sintering technology, DLP laser molding technology, FDM fusion lamination molding technology principle, etc., among which the more mature technology is the electrospinning nanofiber based on 3DP technology Preparation Process. [0003] Electrospinning is a spinning method that uses electrostatic force to produce...

AI Technical Summary

Problems solved by technology

However, the electrospinning method still has the following shortcomings: (1) In order to generate sufficient electrostatic force, a high-voltage electrostatic field of tens of thousands of volts or even hundreds of thousands of volts is required, which not only greatly increases the cost of industrial production, but also poses serious safety hazards (2) The conductivity of the polymer solution used in spinning requires high conductivity and requires post-maintenance, resulting in high cost and long time-consuming; (3) the Taylor cone-shaped droplets formed in the spinning process not only The yield of nanofibers is low, and the prepared nanofibers are difficult to be used in practical applications due to the disordered arrangement; (4) The prepared nanofibers exist in the form of non-woven fabrics, and the fiber arrangement is very messy, which restricts its popularization and application

[0004] It can be seen that the molding problems based on micron-scale and nano-scale components are still not well resolved, and it is even more difficult to effectively apply them in the fields of biomedicine and chemistry.

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