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Detonation preparation method for alumina-adhered diamond nano composite particle material

A diamond particle and nano-composite technology, which is applied in the field of explosive processing, can solve the problems of compounding, difficult nano-alumina and nano-diamond, and achieve the effects of low cost, simple preparation method and good particle dispersion

Inactive Publication Date: 2014-09-10
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a detonation preparation method of alumina-bonded diamond nanocomposite particle material, to produce composite particle material with alumina phase and nano-diamond, in order to solve the problem of using conventional methods to effectively combine nano-alumina and nano-diamond compound problem

Method used

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  • Detonation preparation method for alumina-adhered diamond nano composite particle material
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  • Detonation preparation method for alumina-adhered diamond nano composite particle material

Examples

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Embodiment 1

[0021] (1) Add 1 g of boric acid to 30 ml of distilled water, add 5 g of nano-diamonds to the boric acid solution, mix evenly by ultrasonic, then heat and dry at 100°C.

[0022] (2) Put the boric acid diamond into a heat treatment furnace, and calcinate at 400°C to 450°C for half an hour to boride the surface of the diamond particles, then wash with distilled water several times to remove excess boric acid, and dry at 100°C.

[0023] (3) Weigh 18g of aluminum nitrate and dissolve it in 100ml of distilled water, add borated nano-diamonds, and disperse by ultrasonic.

[0024] (4) Add ammonia water dropwise to the aluminum nitrate solution until the aluminum is completely precipitated, then add 0.1 mol / L hydrochloric acid to the solution to adjust the pH value to 3-4, and let it age for 30 hours.

[0025] (5) Filter out the mixed sediment, heat and dry at 100-150°C, and pulverize to obtain powder;

[0026] (6) Mix the powder with 42g of RDX, place it in an explosion vessel for d...

Embodiment 2

[0028] (1) Add 1 g of boric acid to 30 ml of distilled water, add 9 g of nano-diamonds into the boric acid solution, mix evenly by ultrasonic, then heat and dry at 100°C.

[0029] (2) Put the boric acid diamond into a heat treatment furnace and calcinate at 400°C to 450°C for half an hour to boride the surface of the diamond particles, then wash it several times with distilled water, remove excess boric acid, and dry at 100°C.

[0030] (3) Take 18g of aluminum nitrate and dissolve it in 100ml of distilled water, add borated nano-diamonds, and ultrasonically disperse;

[0031] (4) Add ammonia water dropwise to the aluminum nitrate solution, and after obtaining the precipitate, add 0.1mol / L concentration hydrochloric acid to the solution to adjust the pH value to 3-4, and place it for aging for 30 hours;

[0032] (5) Filter out the mixed sediment, heat and dry at 100-150°C, and pulverize to obtain powder;

[0033] (6) Mix the powder with 70g of RDX to prepare a precursor, and p...

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Abstract

The invention discloses a detonation preparation method for an alumina-adhered diamond nano composite particle material, belonging to the technical field of explosion processing. The method is characterized in that the alumina-adhered diamond nano composite particle material is prepared by using a detonation method; when the surfaces of diamond particles are boronized and the diamond particles are mixed with an aluminum salt solution, the particles are subjected to ultrasonic or homogenizing dispersion, the calcination time of the boronized particles is 30 minutes to 1 hour, and the temperature is 400-450 DEG C. Aluminum nitrate, aluminum hydroxide or sodium metaaluminate is adopted as aluminum salt; a negative oxygen balance explosive such as RDX, PETN (pentaerythritol tetranitrate) and an emulsion explosive is properly adopted as a detonation explosive; in an explosion container, water or a series of non-oxidation gas such as carbon dioxide and nitrogen difficultly reacting with oxygen is adopted as a protective medium. The method has the effects and the advantages that the particle dispersion is good; the size of the particles is 50-200nm; the thickness of a coating layer is about 1-2nm; the preparation method is simple and low in cost. The alumina-adhered diamond nano composite particle material is applicable to being directly used as a polishing abrasive material of gem, a silicon wafer and an LED (light emitting diode) substrate, and can be deeply processed into various diamond grinding tools.

Description

technical field [0001] The invention belongs to the technical field of explosive processing, and relates to a detonation preparation method of a nanocomposite material, in particular to a detonation preparation method of a nanocomposite particle material bonded with alumina by diamond. Background technique [0002] Due to the emergence of a large number of nano-synthetic diamond synthesis methods, such as: vapor deposition method, explosion method, detonation method, laser irradiation, etc., the cost of nano-synthetic diamonds has been greatly reduced, but the particle size of these diamonds is often only a few to tens Nano, which limits its use. How to bond this nano-diamond into larger-sized polycrystalline particles, make full use of it, and expand the scope of use has become an important direction of nano-diamond research. [0003] With the rapid development of science and technology, a single functional material is increasingly unable to meet the requirements of produc...

Claims

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Application Information

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IPC IPC(8): B01J3/08C09K3/14
Inventor 李晓杰王小红闫鸿浩孙明王宇新
Owner DALIAN UNIV OF TECH
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