Aluminum Oxide Beads
Description
Technical Parameters
1. High filler;It has high sphericity ratio and wide particle size distribution, and can fill silicone rubber and plastic with high density, and obtain mixtures with low viscosity and good fluidity.
2. High thermal conductivity;Because of its high density filling, compared with crystalline silicon powder, the mixture with high heat conductivity and good heat dissipation can be obtained.
3. Low wear resistance;Because of its spherical appearance, the wear of mixer, molding machine and mold can be reduced, and the service life of the equipment can be increased.
Product performance and characteristics
Spherical alumina (-Al2O3), as a thermal conductivity filler, can significantly improve the thermal conductivity of the mixture, reduce the coefficient of expansion, increase the strength of the mixture;The spherical shape is conducive to the dispersion and sliding of the powder in the system. It can be evenly dispersed in the organic body and form a close accumulation, thus obtaining a mixture with high filling, low viscosity and high thermal conductivity.At the same time, the wear of mixer, molding machine and mold is greatly reduced, which can extend the service life of the equipment.
Application of spherical alumina products.
1. Thermal conductive gasket, thermal conductive silicon grease, filler for heat dissipation substrate (MC substrate), thermal phase change material, etc.;
2. Filler for semiconductor packaging resin;
3. Silicone cooling binder and filler for mixture;
4. Epoxy plasticizer, epoxy castable filler, heat-conducting aluminum substrate, etc.
Performance Index:
| Item/Product |
75 series |
92 series |
95 series |
| AL2O3(%) | ≥ 75 | ≥ 92 | ≥ 95 |
| Moh's Hardness | 7.5 | 9 | 9 |
| Water absorption(%) | ≤ 0.02 | ≤ 0.02 | ≤ 0.02 |
| Bulk Density(g/cm³) | ≥ 3.20 | ≥ 3.60 | ≥ 3.70 |
| Wear Resistance(‰) | ≤ 0.15 | ≤ 0.15 | ≤ 0.10 |
| Colour | white | white | white |
