Radial electrospinning nozzle based on rectangular blades

Abstract

The invention relates to a radial electrospinning nozzle based on rectangular blades, and belongs to the field of nanofiber preparation. The nozzle comprises a radial spinneret and a cylindrical tube.The radial spinneret is composed of a plurality of uniformly distributed rectangular blades of the same structure, each rectangular blade opens to the outer side to be radial at a certain angle, theradial spinneret is closely and smoothly connected with the cylindrical tube, and barrier-free transport of a spinning fluid can be achieved. The radial electrospinning nozzle based on rectangular blades has the large inner diameter, the needle blocking problem is avoided conveniently, and electrostatic spinning can be conducted on a high-concentration spinning solution system; the radial spinneret with the rectangular blades has the function of stabilizing liquid droplets; meanwhile, the area of the spinning liquid surface is increased, multiple spinning jets can be generated, and the spinning output can be increased conveniently; closed and controllable liquid supply can be achieved by means of an injection pump, and a solvent is not likely to be volatilized; the rectangular blades havethe point effect, and the energy consumption can be lowered; in addition, the radial electrospinning nozzle based on the rectangular blades can be used for alternating current spinning.

Description

technical field [0001] The invention relates to an electrospinning nozzle, in particular to a radial electrospinning nozzle based on rectangular blades, and belongs to the field of nanofiber preparation. Background technique [0002] Electrospinning is a method of preparing nanofibers by stretching a polymer solution or melt by an electric field force generated by a high-voltage DC power supply. It is currently one of the most effective techniques for preparing nanofibers. The solution electrospinning device can use a single metal capillary needle as a spinning head to realize spinning, such as the technologies disclosed in patents 200420020596.3 and 200410025622.6. However, due to the low yield of traditional single metal capillary electrospinning, it cannot meet the needs of industrialization and has become a bottleneck problem restricting its development. [0003] Theron et al. arranged multiple metal capillary needles in a linear or rectangular arrangement to form a mul...

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Problems solved by technology

[0004]Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a radial electrospinning nozzle based on rectangular blades to solve the problem of traditional capillary needle electrospinning Needle blockage of silk device, inconvenient cleaning, high energy consumption of needleless electrospinning technology, difficulty in controlling fiber quality caused by open liquid supply, etc.

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