Special Calcined Kaolin for Automotive Coatings
Special Calcined Kaolin for Automotive Coatings
1. Benefits and Application
Due to its special performance, GB-CK88E is widely used in electro-deposition application to replace TiO2 and reduce cost while helping to shape paint film porosity and hardness. When compounding with solvents, it can improve mechanical and aging properties, enhancing film formation, density, brightness and impact strength. Because of its excellent dispersion and suspension properties, it can improve anti-sedimentation property of paints. It has low content of impurities and has high chemical inertness, low conductivity and low residue, which can contribute to salt spray resistance of E-coatings and has the least negative impact to electro-deposition paints process.
The above mentioned features also makes GB-CK88E a good product in applications like printing inks where ultra-fine particle size is desired.
Item | GB-CK88E |
Physical Form | Highly Pulverized Powder |
ISO Brightness (%) | 92+/-2 |
Sedigraph Particle Size(-2micron,%) | 92+/-2 |
Specific Gravity (g/cm3) | 2.63 |
Screen residue (325 mesh %) | 0.002 max. |
Oil Absorbency (g/100g) | 55-60 |
Hegman | 5.0 min. |
pH (28% solids) | 6.0-7.0 |
Bulk Density(kg/m3) | 350 |
Free Moisture @105 deg C (%) as produced | 0.5 max. |
Electrical Conductivity (μs/cm,10%,25centidegree) | 35 max. |
3. Typical Chemical Properties
SiO2(%) | Al2O3(%) | Fe2O3(%) | TiO2(%) | CaO(%) | MgO(%) | K2O(%) | Na2O(%) | ||
52+/-2 | 45+/-2 | 0.50max | 0.8max | 0.5max | 0.2max | 0.10max | 0.2max |
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