Benefits and Application
GB-CK88B is an anhydrous aluminum silicate produced by a controlled,high-temperature heating of a water-fractionated kaolin.GB-CK88B is specifically designed for use as a filler in automobile electrophoresis prime coat.As a calcined kaolin pigment,with the property of high brightness,excellent light scattering,fine particle,is an extender that can replace titanium dioxide partly to improve the efficiency and reduce production costs,and can help paint to form easily the close-grained and smooth paint film. It is stable and hard to sedimentate in electrophoresis tank.With low impurity and good inertia, it can improve paint film's stability against corrosion and moisture-proof property. The particle has micro platy shape.The series has advantages of low oil absorbency and easy dispersion. GB-CK88B, which is applied in automobile ecectrophoresis prime coat,supplies excellent deposition stability,paint film flattening,corrosion resistance,rim angle spreadability and uniformity. Calcined kaolin's excellent opacity and adhesion make paint film flatter and denser and get much better stone striking resistance property.
Typical Physical Properties
| Item |
GB-CK88B |
| Brightness(T457)% |
90-92 |
| Particle Size(-2micron,%) |
88+/-2 |
| Refractivity |
1.62 |
| Screen residue (325 mesh %) |
0.003max |
| Oil Absorbency (g/100g) |
70-75 |
| Dispersion (micron) |
50max |
| pH |
5.5-7.0 |
| Bulk Density(kg/m3) |
330 |
| Moisture (%) |
0.5max |
| Electrical Conductivity(μs/cm,10%,25centidegree) |
35max |
Typical Chemical Properties
| SiO2(%) |
Al2O3(%) |
Fe2O3(%) |
TiO2(%) |
CaO(%) |
MgO(%) |
CuO(%) |
K2O(%) |
Na2O(%) |
MnO(%) |
| 52+/-2 |
45+/-2 |
0.50max |
1.5max |
0.4max |
0.2max |
0.004max |
0.05max |
0.15max |
0.004max |
