99%-99.9% Calcined alumina powder for vehicle paint coating polishing
99%-99.9% Calcined alumina is an alumina raw material produced from high-purity industrial aluminum oxide powder through different temperature calcination processes. By calcination, the physical structure of alumina will change, and alumina will be transformed into α – Al2O3 with superior properties. Calcined alumina is widely used in fields such as grinding, lithium batteries, electronic ceramics, aerospace, thermal conductive materials, refractory materials, etc.
Characteristics of 99%-99.9% Calcined alumina powder for vehicle paint coating polishing:
- Uniform particle size distribution, strong cutting force, and good brightness..
- Good fluidity, no damage during grinding.
- Moderate hardness, minimal scratches without damaging the primer.
1. 99% purity calcined alumina powder
Chemical composition:
| Spec. | Al2O3 | Fe2O3 | Na2O | SiO2 |
| HX-JP-3 | ≥99% | ≤0.1% | ≤0.3% | ≤0.2% |
Physical index:
| Spec. | Bulk density（g/cm3） | Oil absorption rate（%） | Crystal size（um） | D50（um） |
| HX-JP-3 | ≤0.5% | ≥90 | 0-0.5 | 2.8±0.2 |
2. 99.9% purity calcined alumina powder
Chemical composition:
| Spec. | Al2O3 | Fe2O3 | Na2O | CgO | MaO |
| HX-LA-T | ≥99.95% | ≤100 PPM | ≤200 PPM | ≤150 PPM | ≤20 PPM |
Physical index:
| Spec. | PH Value | SSA（BET m2/g) | Particle size distribution | |||
| D10（um） | D50（um） | D90（um） | D99（um） | |||
| HX-LA-T | 7-10 | 4-7 | ≥0.3 | 0.6-1.0 | ≤1.6 | ≤2.8 |
Application:
- Grinding and polishing of car paint surface
- Polishing of various metal and alloy products
- Polishing of non-metallic materials
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