Experimental device for improving yield of nano-particles prepared by metal wire electrical explosion

Abstract

The invention discloses an experimental device for improving the yield of nano-particles prepared by metal wire electrical explosion. The device comprises a metal wire electric explosion test unit anda high-voltage pulse capacitor, one end of the high-voltage pulse capacitor is connected with a metal wire electric explosion test unit through a capacitor discharge switch, and the other end of thehigh-voltage pulse capacitor is in common connection with a metal cavity of the metal wire electric explosion test unit; and the metal wire electric explosion test unit comprises two sections of metalwires, the two-section metal wires are used for sequentially forming two electric explosion processes according to a discharge sequence in one pulse discharge process, and then the nano-particles arecorrespondingly generated. According to the device, double-wire electric explosion can be realized in a same experiment cavity, so that the size of the electric explosion experiment device can be greatly reduced, the volume of the experimental device is effectively reduced, and the production efficiency of the experimental device can be improved by 1.2-1.7 times.

Description

technical field [0001] The invention belongs to the technical field of preparing nanoparticles by electric explosion, and in particular relates to an experimental device for increasing the yield of nanoparticles prepared by electric explosion of metal wires in large-scale manufacturing of metal nano-parts. Background technique [0002] Metal nanoparticles have small size, large specific surface area, and quantum size effect. They have shown attractive application prospects in the fields of light absorption, sensitivity, catalysis, energy, and other functional materials, and have received widespread attention. In recent years, the development of metal nanoparticle manufacturing technology has been very rapid, and a variety of nanopowder preparation methods have been designed, including gas condensation method, arc method, chemical reduction, and wire electric explosion. There are low production efficiency, there are not many devices that can realize the mass production of met...

AI Technical Summary

Problems solved by technology

In recent years, the development of metal nanoparticle manufacturing technology has been very rapid, and a variety of nanopowder preparation methods have been designed, including gas condensation method, arc method, chemical reduction, and wire electric explosion. There are low production efficiency, there are not many devices that can realize the mass production of metal nanoparticles, and there are disadvantages such as complex structure, inconvenient operation and use, etc.

Metal nanoparticles can be prepared by using a metal wire to form an electric explosion process through a large current, but due to the influence of the energy efficiency of the electric explosion deposition and the inhomogeneity that occurs during the wire explosion process, the current electric explosion process generally occurs when the metal wire is thinner (<0.5mm ), the length is shorter (<200mm), which seriously restricts the output and generation efficiency of nanoparticles, and increases the time and equipment cost of production input.

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