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Aluminum Nitride-Modified Powder
The hydrolysis-resistant treatment of AlN powders primarily involves chemically bonding or physically adsorbing a coating or a thin reaction layer onto the surface of the AlN particles, thereby inhibiting the hydrolysis reaction between the AlN powder and water.
DETAILS
- 产品描述
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Product Features
- High thermal conductivity
- Excellent waterproof performance
- High hydrolytic stability
- Narrow particle size distribution
The hydrolysis-resistant treatment of AlN powders primarily involves chemical bonding or physical adsorption to coat the surface of AlN particles with a thin reactive layer, thereby inhibiting the hydrolysis reaction between the AlN powder and water. Acid modification of AlN powders entails esterification between the acid and surface hydroxyl groups, which forms a protective film on the particle surface. This outstanding hydrophobicity and strong water resistance can significantly enhance the performance of the final product.
Particle Size Distribution Chart
Technical Indicators
Technical Indicators Parameters Particle size (μm) D10 ≤ 0.8 D50 ≤ 2 D90 ≤ 3 Specific surface area (m²/g) ≥1.6 Bulk density (g/cm³) ≥1.0 Pore-filling density (g/cm³) ≥1.7 Hydrolysis Test
Experimental conditions: 30 grams of aluminum nitride, 300 grams of pure water.
Experimental method: The degree of hydrolysis is determined by observing the experimental phenomena and measuring the pH of the solution.Table 1: Water Temperature 70°C
T/h
pH
0h 1h 2h 5h 10h 24h 48h 72h Modified AIN powder 5.6 5.7 5.7 5.8 5.9 6.1 6.15 6.15 Unmodified AIN 7.6 9.4 10.5 Table 1: Water Temperature 90°C
T/h
pH
0h 0.5h 1h 1.5h 2h 2.5h 3h 4h Modified AIN powder 5.61 5.72 5.75 5.78 5.79 5.86 5.98 6.05 Unmodified AIN 7.6 8.4 9.5 10.1 10.6 70°C Hydrolysis Validation Experiment
Experimental observation: Unmodified AlN undergoes nearly complete hydrolysis after reacting at 70°C for 2 hours, producing a strong, irritating ammonia odor and resulting in substantial agglomeration at the bottom of the beaker.
Our modified products exhibit no ammonia odor, no caking, and virtually no hydrolysis even after 72 hours of hydrolysis.90°C Hydrolysis Validation Experiment
Experimental observation: Unmodified AlN undergoes nearly complete hydrolysis after reacting at 90°C for 1.5 hours, producing a strong, irritating ammonia odor and resulting in substantial agglomeration at the bottom of the beaker.
Our modified products exhibit no ammonia odor, no caking, and virtually no hydrolysis even after 4 hours of hydrolysis.
Application Fields
Communications field
Aerospace
Rail Transit
Household appliances
LED lighting
Aluminum Nitride-Modified Powder
The hydrolysis-resistant treatment of AlN powders primarily involves chemically bonding or physically adsorbing a coating or a thin reaction layer onto the surface of the AlN particles, thereby inhibiting the hydrolysis reaction between the AlN powder and water.
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