Precipitated silica with special physic-chemical properties, work as reinforcing transparent fillers highly valued in formulation of rubber-based blends. In particular, They lead to enhanced tensile strength, tear strength and abrasion resistance and increase hardness of vulcanized rubbers. On the other hand, They reduce consumption of rubbers and therefore reduce the cost.
Uses:
It is used widely in silicon rubber, construction sealant, coating, electron and electric, aerospace, medicine and medical material, resin processing, printing ink, pesticide and other industries.
|
Type
|
813
|
815
|
900A
|
|
SiO2
|
90
|
91
|
94
|
|
Residue on sieve(45um)％≤
|
0.5
|
0.5
|
0.5
|
|
Heating Loss %≤
|
7.0
|
7.0
|
7.0
|
|
Ignition Loss % ≤
|
7.0
|
7.0
|
7.0
|
|
PH
|
6.0-7.0
|
6.0-7.0
|
6.0-7.0
|
|
Fe mg/kg ≤
|
300
|
260
|
200
|
|
DBP cm³/g≤
|
2.8
|
2.8
|
3.0
|
|
Specific Surface m²/g
|
180-220
|
200-230
|
220-260
|
|
conductivity μs/cm≤
|
300
|
150
|
110
|
|
Sulfate % ≤
|
0.3
|
0.15
|
0.1
|
|
Bulk Density g/ml
|
0.16
|
0.16
|
0.16
|
|
packing
|
15kg
|
15kg
|
15kg
|
|
Appearance
|
White Powder
|
White Powder
|
White Powder
|