PFS-200 is a surface-treated, positive-charged hydrophobic fumed silica designed for modern toner formulations.
It functions as an external additive to improve toner flowability, reduce agglomeration, and stabilize triboelectric charging under varying environmental conditions.
The product has been validated by toner manufacturers and is used in mass production for positive-charged toner systems.
| Properties and Test Method | Unit | Value |
| Specific Surface Area, BET | m2/g | 170±20 |
| pH Value in 4% Dispersion | / | 5.5~7.5 |
| Loss on Drying @ 105℃×2h | wt.% | ≤1.5 |
| Loss on Ignition @ 1000℃×2h | wt.% | ≤5.0 |
| SiO2 Content, Based on Ignited Material | wt.% | ≥99.8 |
| Tap Density | g/l | 45±10 |
| Carbon Content | % | 4.5~6.0 |
| Surface Charge | Positive Charge |
Features stable surface positive charge that effectively imparts positive charge to toner, enhancing charge consistency and stability during development process.
Hydrophobically modified surface significantly reduces environmental humidity impact, maintaining stable triboelectric performance even under high humidity (RH 85%) or low temperature (10℃) conditions.
As a toner external additive, effectively reduces particle adhesion and agglomeration, significantly improving toner free flowability and handling properties.
Helps achieve sharper image edges, higher resolution, and more stable print quality, especially suitable for fine particle size toner systems.
Comparable to globally leading brands in performance and application effects, successfully applied in toner manufacturers' batch production with stable supply advantages.
Excellent performance in toner systems with particle size of approximately 6–8 μm, can be used with other additives to further optimize performance.
Improves charge stability and flowability in positive toner formulations.
Enhances toner handling and print consistency in laser printing systems.
Supports stable tribo-charging in analog copiers with OPC drums.
Optimized for fine toner systems requiring precise flow and charge control.
Helps balance electrostatic performance across black and color toners.
Designed for stable performance in continuous, large-scale production.
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