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Hydrolysis-resisting aluminum nitride powder and preparation method thereof

A technology of aluminum nitride and anti-hydrolysis, which is applied in the field of hydrolysis-resistant ceramic powder materials and powder surface treatment, aluminum nitride powder and its preparation, ceramic heat-conducting materials and its preparation, and achieves wide application range and simple process operation , The effect of low production cost

Active Publication Date: 2018-04-24
SHANGHAI YUKING WATER SOLUBLE MATERIAL TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems of the prior art, the object of the present invention is to overcome the deficiencies of the prior art, and provide a hydrolysis-resistant aluminum nitride powder and a preparation method thereof. The prepared hydrolysis-resistant aluminum nitride powder is at least It can exist stably for 72 hours, solving the storage and application problems caused by the easy hydrolysis of AlN powder

Method used

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  • Hydrolysis-resisting aluminum nitride powder and preparation method thereof
  • Hydrolysis-resisting aluminum nitride powder and preparation method thereof

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Embodiment 1

[0023] In this embodiment, a method for preparing an anti-hydrolysis aluminum nitride powder comprises the following steps:

[0024] (1) Weigh 0.6g of stearic acid, add it to 30ml of absolute ethanol solvent, and use magnetic stirring to disperse, place the organic acid mixture on a magnetic stirrer, stir for 20min, and the speed is 800r / min to fully disperse ;

[0025] (2) Adopting the ball milling dispersion method, the organic acid mixture prepared in step (1) and 20 g of AlN powder are added to the ball milling tank, the mixed slurry is evenly dispersed, and the ball milling speed is 200r / min; the ball milling dispersion time 1h, fully dispersed;

[0026] (3) Continue to use the ball milling dispersion method, add 2g of silane coupling agent KH560 dropwise at a uniform speed to the mixed slurry prepared in step (2), the ball milling speed is 250r / min; the ball milling dispersion time is 3h, fully disperse, and prepare Obtain aluminum nitride mixed slurry;

[0027] (4) F...

Embodiment 2

[0031] This embodiment is basically the same as Embodiment 1, especially in that:

[0032] In this embodiment, a method for preparing an anti-hydrolysis aluminum nitride powder comprises the following steps:

[0033](1) Weigh 0.4g of citric acid, add it to 80ml of absolute ethanol solvent, and use magnetic stirring to disperse, place the organic acid mixture on a magnetic stirrer, stir for 10min, and the speed is 600r / min to fully disperse;

[0034] (2) Add 20 g of AlN powder to the organic acid mixture prepared in step (1), adopt the paddle stirring dispersion method, put the mixed solution in a water bath stirrer, stir at 60 ° C for 2 h, and carry out fully dispersed;

[0035] (3) Add 2 g of silane coupling agent KH560 dropwise at a constant speed to the mixed liquid prepared in step (2), stir at 80° C. for 3 h, and fully disperse to prepare aluminum nitride mixed slurry;

[0036] (4) Filter and wash the aluminum nitride mixed slurry obtained in step (3), and dry at 80° C....

Embodiment 3

[0039] This embodiment is basically the same as the previous embodiment, and the special features are:

[0040] In this embodiment, a method for preparing an anti-hydrolysis aluminum nitride powder comprises the following steps:

[0041] (1) Weigh 1.2g of stearic acid, add it to 80ml of absolute ethanol solvent, and use magnetic stirring to disperse, place the organic acid mixture on a magnetic stirrer, stir for 20min, and the speed is 800r / min to fully disperse ;

[0042] (2) Add 30 g of AlN powder to the organic acid mixture prepared in step (1), adopt a paddle stirring dispersion method, put the mixture into an oil bath stirrer, and stir at 80° C. for 2 h, to fully disperse;

[0043] (3) Add 2 g of silane coupling agent KH550 dropwise at a constant speed to the mixed solution prepared in step (2), stir at 80°C for 4 hours, and fully disperse to prepare aluminum nitride mixed slurry;

[0044] (4) Filter and wash the aluminum nitride mixed slurry obtained in step (3), and ...

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Abstract

The invention discloses hydrolysis-resisting aluminum nitride powder and a preparation method thereof. The hydrolysis-resisting aluminum nitride powder is prepared by carrying out covering treatment on surfaces of aluminum nitride powder particles through an organic acid and a coupling agent, wherein the content of the organic acid is 1 to 15 weight percent, and the content of the coupling agent is 0.5 to 20 weight percent. An experiment proves that at room temperature, the aluminum nitride powder prepared by the preparation method is immersed into water and can keep unhydrolyzed for one weekor longer than one week; at 80 DEG C, the hydrolysis-resisting aluminum nitride powder prepared by the preparation method can stably exist in water for at least 72h without any hydrolysis. The problemthat aluminum nitride powder is not easy to store and apply, caused by the fact that the aluminum nitride powder is easy to hydrolyze, is effectively solved. Furthermore, the advantages of simple technological operation, low raw material price, low production cost, wide application range, easiness for realizing industrial production and the like are also achieved; the industrial application valueis remarkable, and large-scale industrial application of aluminum nitride is facilitated.

Description

technical field [0001] The invention relates to a ceramic heat-conducting material and a preparation method thereof, in particular to an aluminum nitride powder and a preparation method thereof, and also to a hydrolysis-resistant ceramic powder material and a powder surface treatment method, which are applied to heat dissipation and packaging field of materials technology. Background technique [0002] AlN ceramics is an emerging high thermal conductivity material in the past 20 years. Its theoretical thermal conductivity can reach 320W / (m·K), and its actual value can reach 260W / (m·K), which is 10 to 15 times that of alumina ceramics. At the same time, AlN ceramics also have excellent insulation, high temperature resistance, corrosion resistance and a thermal expansion coefficient that matches silicon. These excellent properties make AlN ceramics more and more widely used in many high-tech fields, and are considered to be ideal heat dissipation and packaging materials for a...

Claims

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Application Information

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IPC IPC(8): C04B35/628C04B35/581
CPCC04B35/581C04B35/62802C04B2235/6025
Inventor 王宇汪暾谢建军戴圣洪丁毛毛施鹰雷芳章蕾
Owner SHANGHAI YUKING WATER SOLUBLE MATERIAL TECH
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