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Synthetic method of aluminium nitride nanoparticles

A nanoparticle and synthesis method technology, applied in nitrogen compounds, chemical instruments and methods, inorganic chemistry, etc., can solve the problem of aluminum nitride powder purity, crystallinity, particle size, dispersion and morphology specifications, intellectual property monopoly, Complex technology and other problems, to achieve the effect of simple and cheap preparation process, high purity and crystallinity, and uniform dispersion

Active Publication Date: 2014-01-29
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the aluminum nitride powder obtained by this method is far from the high-quality powder specifications currently required in the market in terms of purity, crystallinity, particle size, dispersion, and morphology.
At present, high-quality aluminum nitride powder materials are basically prepared by the plasma method, which is expensive in equipment and complex in technology, and the relevant intellectual property rights are monopolized by very few developed countries and companies

Method used

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  • Synthetic method of aluminium nitride nanoparticles
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  • Synthetic method of aluminium nitride nanoparticles

Examples

Experimental program
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Effect test

Embodiment 1

[0024] (1) Put 25.2g of melamine and 37.5g of aluminum nitrate nonahydrate into a large beaker filled with 500ml of deionized water, then put them into a water bath with a temperature of 97°C and keep stirring to obtain a clear and transparent solution ;

[0025] (2) Cool the clear and transparent solution obtained through the reaction in step (1) to room temperature naturally, then let it stand for 20 hours, and filter the solution to obtain a white intermediate product;

[0026] (3) drying the product obtained in step (2) at 60°C to obtain a white fibrous precursor;

[0027] (4) The precursor obtained in step (3) was reacted in ammonia gas flow (ammonia gas flow rate: 300ml / min) at 1300°C for 2 hours, and naturally cooled to room temperature after the reaction to obtain white aluminum nitride nanoparticle products.

[0028] illustrate:

[0029] Such as figure 1 Shown is the XRD pattern (2θ=20-80°) of the as-prepared aluminum nitride product. The diffraction peaks in the ...

Embodiment 2

[0031] Change the consumption of step (1) melamine and aluminum nitrate nonahydrate into 12.6 and 112.5g respectively in embodiment 1 (the molar ratio of melamine and aluminum nitrate nonahydrate is 1:3), and other operations are all the same as in Example 1 Identical, obtain product with embodiment 1.

Embodiment 3

[0033] Change the consumption of step (1) melamine and aluminum nitrate nonahydrate into 12.6 and 225g respectively in embodiment 1 (the molar ratio of melamine and aluminum nitrate nonahydrate is respectively 1:6), the deionized water consumption is changed into 1000 milliliters, other All operations are the same as in Example 1, and the product obtained is the same as in Example 1.

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Abstract

The invention discloses a synthetic method of aluminium nitride nanoparticles. According to the method, aluminium nitrate nonahydrate and melamine are adopted as raw materials for the first time and the synthetic method of the aluminium nitride nanoparticles comprises the following two steps of: 1, dissolving a mixture of the aluminium nitrate nonahydrate and the melamine in water (heated in a water bath kettle) at the temperature of 95 DEG C to obtain a settled solution, naturally cooling the settled solution, carrying out pumping filtration to obtain a white intermediate product and drying the intermediate product at the temperature of 80 DEG C to obtain a precursor; and 2, placing the synthetic precursor in an aluminium oxide tube furnace, carrying out high temperature reaction in an ammonia atmosphere and finally obtaining the aluminium nitride nanoparticle product. The method is simple, low in cost and high in product crystallinity and purity.

Description

technical field [0001] The technical solution of the invention relates to a simple synthesis method of aluminum nitride nanoparticles with high specific surface area and high crystallinity. Background technique [0002] Aluminum nitride is a new type of functional ceramic material, which has excellent characteristics such as good thermal conductivity, reliable electrical insulation, low dielectric loss and dielectric constant, and a thermal expansion coefficient similar to silicon. Experiments have shown that the thermal conductivity of aluminum nitride polycrystalline materials can reach 260W·m -1 K -1 , the thermal conductivity of single crystal material is as high as 320W·m -1 K -1 , so it is widely used as packaging modification materials for microelectronic devices. Aluminum nitride is also widely used in the field of optoelectronic engineering, including optical storage interfaces, dielectric layers of electronic substrates, chip carriers with high thermal conducti...

Claims

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Application Information

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IPC IPC(8): C01B21/072C04B35/581
Inventor 徐学文薛彦明唐成春
Owner HEBEI UNIV OF TECH
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