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Device of preparing nano powder material through electrical explosion

A nano-powder, electric explosion technology, applied in the field of technology, can solve the problem of small single output and achieve the effect of strong versatility

Inactive Publication Date: 2013-07-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing electric explosive device can only make conductive wire or conductive sheet of one specification, and the single output is small

Method used

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  • Device of preparing nano powder material through electrical explosion
  • Device of preparing nano powder material through electrical explosion
  • Device of preparing nano powder material through electrical explosion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 Preparation of carbon-coated nanomaterials

[0037] The test materials are iron wire (diameter φ1mm, purity 99.9%) and carbon powder (particle size 5μm, purity 99.9%).

[0038] Figure 4 It is a schematic diagram of the reactant structure, wherein the electric explosion wire 10 is an iron wire, and the material of the heat-shrinkable tube 12 is PET (C 8 h 10 o 5 ), the preparation method of the reactant is as follows:

[0039] Insert the iron wire into the heat-shrinkable tube 12 , and the two ends of the iron wire expose the heat-shrinkable tube 12 ; fix the copper sheet 13 on one end of the heat-shrinkable tube 12 and then heat it so that it shrinks and wraps the copper sheet 13 tightly. Pour the carbon powder 11 from the other end of the heat-shrinkable tube 12 and fix the copper sheet 13 at this end, heat it to shrink and wrap the copper sheet 13 tightly, so as to prepare the sample required for the test.

[0040] use figure 2 In the shown device, s...

Embodiment 2

[0042] Embodiment 2 prepares nano-diamond

[0043] The test material is a high-purity graphite carbon rod (diameter 2mm, length 25mm, purity 99.9%).

[0044] use figure 2 For the shown device, select the electrode holder 9 with a mounting groove at the front end, install the high-purity graphite carbon rod between the two electrode holders 9, pour water or absolute ethanol into the electric explosion tank 4, the liquid level is 6cm. Close the tank cover 3, apply a voltage of 30KV between the two electrode chucks 9, and perform a discharge explosion.

[0045] After the experiment is completed, the liquid containing nanoparticles is discharged from the exhaust valve 2, and most of the water is removed by centrifugation, then centrifugally rinsed with absolute ethanol, dried in a vacuum oven, and sample nanoparticles are recovered.

Embodiment 3

[0046] Embodiment 3 prepares graphene

[0047] The test material is high-purity cracked graphite with a thickness of 0.5mm and a purity of 99.9%.

[0048] use figure 1 For the device shown, select the electrode chuck 9 with a sharp front end, and the distance between the two electrode chucks 9 is 0.5mm; pour water or absolute ethanol into the electric explosion tank, and the liquid level is 6cm. Put 100-500 mg of high-purity pyrolysis graphite into the device, and close the tank cover 3 . A voltage of 20KV is applied between the two electrode clamps 9 to make the front end of the electrode clamps 9 discharge at the tip to generate a high-energy shock wave.

[0049] After the experiment is completed, the liquid containing nanoparticles is discharged from the exhaust valve 2, and most of the water is removed by centrifugation, then centrifugally rinsed with absolute ethanol, dried in a vacuum oven, and graphene is recovered.

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Abstract

The invention relates to a device of preparing nano powder material through electrical explosion, belonging to the technical field of technology. An upper part of an electrical explosion tank is provided with a detachable tank cover with an intake valve and an exhaust valve. Two electrode bars are mounted on the electrical explosion tank respectively through an insulated high-temperature-resistance nylon block and a fixed pin, wherein each electrode bar passes through the electrical explosion tank, with one end located in the electrical explosion tank and the other end located outside the electrical explosion tank and connected with a pulse power supply. Terminal clamps are mounted at the other ends of the electrode bars through fixed joints. According to the invention, the electrical explosion device is equipped with a variety of terminal clamps with an adjusting function and general interfaces, and conductive wires or sheets can be mounted, so that nano powder can be formed through the electrical explosion of the wires or sheets. Tip discharge electrodes can also be used, so as to apply voltage to the electrode bars through different electrodes, discharge in different media, and generate high-energy shock waves in the explosion tank, thereby promoting physical and chemical changes of the media and generating new nano-materials.

Description

technical field [0001] The invention relates to a device for preparing nano-powder material by electric explosion, which belongs to the technical field of technology. Background technique [0002] Nanotechnology is the technology of preparing new substances with atoms and molecules. It is a new discipline that was born in the 1980s and is rising rapidly. It involves multidisciplinary knowledge such as physics, chemistry, materials science, biology and electronics. . Nanotechnology, information technology and life science are key technologies that will have a huge impact on the future of human society (21st century). [0003] At present, there are many methods for preparing nanomaterials, which can be classified into three categories: solid-phase method, liquid-phase method, and gas-phase method according to the state of the material in the reaction process. However, there are two basic mechanisms: one is to split the bulk solid into nanoparticles; the other is to form part...

Claims

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Application Information

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IPC IPC(8): B01J19/08B01J13/02
Inventor 陈鹏万高鑫尹昊陈昂徐春晓
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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