properties:
With special physic-chemical properties, Precipitated silica work as reinforcing transparent fillers highly valued in formulation of rubber-based blends, lead to enhanced tensile strength, tear strength and abrasion resistance and increase hardness of vulcanized rubbers, reduce consumption of rubbers and therefore reduce the cost.
Specification:
Appearance | Micron pearl/ Granula |
| Powder | ||||
SiO2 (ignited basis) % | ≥98 | ≥98 | ≥98 | ≥98 | ≥98 | ≥98 | ≥98 |
SiO2 content ( SiO2 (dried basis) % | ≥90 | ≥90 | ≥90 | ≥90 | ≥90 | ≥90 | ≥90 |
Specific surface area | 115±10 | 130±10 | 155±10 | 175±10 | 195±10 | 215±10 | 175±10 |
Drying loss(105) % | 4--8 | 4--8 | 4--8 | 4--8 | 4--8 | 4--8 | 4--8 |
Ignition loss(1000) % | ≤7 | ≤7 | ≤7 | ≤7 | ≤7 | ≤7 | ≤7 |
PH value | 6.0--7.5 | 6.0--7.5 | 6.0--7.5 | 6.0--7.5 | 6.0--7.5 | 6.0--7.5 | 6.0--7.5 |
Sulfate% | ≤2 | ≤2 | ≤2 | ≤2 | ≤2 | ≤2 | ≤2 |
DBP absorption value cm3/100g | 150-280 | 150-280 | 150-280 | 150-280 | 150-280 | 150-280 | 150-280 |
Sieve residue on 325 mesh% | ≤0.5 | ≤0.5 | ≤0.5 | ≤0.5 | ≤0.5 | ≤0.5 | ≤0.1 |
Bulk density g/l | ≥200 | ≥200 | ≥200 | ≥200 | ≥200 | ≥200 | ≥80 |
Particle size(D50) um | ≥250 | ≥250 | ≥250 | ≥250 | ≥250 | ≥250 |
|
Application:
1) For Light-colored, color and High-grade transparent rubber products.
2) For PE, PP, powder products as filler with good fluidity property
3) As food additives, feed additives, Pesticide carrier with good fluidity and anti-caking property
4) For glass cement, sealant, painting, coating, printing ink, as thickener and Anti precipitating agent
5) for others
Packaging
20kg/bags,double-layer bag (inner layer with PE bag, outer layer with polypropylene bag)
PRECIPITATED SILICA for rubber, shoe