The product is a super fine particle size grade designed especially for thermal paper, coated paper and other specialty papers. It is of high porosity, high oil absorption, narrow particle size distribution, low abrasion value, outstanding insulation power and excellent tinting strength. It can improve paper’s whiteness and printing effect. It is similar to imported calcined kaolin data in thermal paper.
Main application:
Thermal paper, coated paper, specialty paper, etc.
Typical Properties:
|
Properties |
Unit |
Standard |
|
Whiteness |
R457, % |
≥91 |
|
Particle size |
-2μm, % |
86-90 |
|
Average particle size |
D50, μm |
0.8±0.1 |
|
Abrasion |
mg |
≤25 |
|
Screen residue |
325 mesh, % |
≤0.005 |
|
Oil absorption |
g/100g |
76±3 |
|
Dispersion |
Hegman,μm |
≤45 |
|
Moisture |
% |
≤0.5 |
|
pH |
------ |
6.0-8.0 |
Chemical Composition:
|
SiO2（%）
|
Al2O3（%） |
Fe2O3（%） |
TiO2（%） |
CaO（%） |
MgO（%） |
K2O（%） |
Na2O（%） |
MnO（%） |
|
52±2 |
45±2 |
≤0.8 |
≤1.5 |
≤0.5 |
≤0.3 |
≤0.1 |
≤0.2 |
≤0.004 |