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Precipitated Silica HL915 is a high-purity, synthetic amorphous silica engineered for demanding industrial applications—particularly in high-transparency silicone rubber formulations. Its precisely controlled D50 particle size of 11.5 μm, narrow particle distribution, and ultra-low impurity profile (low Fe/Na, non-fluorescent) ensure exceptional optical clarity and consistent reinforcement performance. The material exhibits high pore volume, excellent dispersibility, superior flowability, and minimal sedimentation—critical attributes for stable masterbatch preparation and uniform filler distribution in elastomeric systems. Widely adopted in premium coating, sealant, and specialty rubber industries, HL915 delivers balanced rheology control, enhanced mechanical strength, and long-term formulation stability without compromising transparency or process efficiency.
1. High purity (>96% SiO₂) with ultra-low iron and sodium content ensures non-yellowing performance in transparent silicone rubber.
2. Optimized D50 of 11.5±2.0 μm and narrow PSD enable uniform dispersion and minimal settling in viscous matrices.
3. Large pore volume (1.7±0.1 mL/g) and high surface area (135±20 m²/g) provide strong reinforcing capability and thixotropic control.
Store in a cool, dry, well-ventilated area away from direct sunlight and moisture sources. Shelf life is 24 months when sealed and stored under recommended conditions. Transport as non-hazardous general cargo; avoid exposure to rain or condensation during transit. For optimal dispersion, pre-mix with carrier oil or polymer before high-shear incorporation; avoid prolonged high-speed dry blending to prevent agglomeration. Use appropriate PPE (dust mask, gloves, safety goggles) when handling to minimize inhalation or skin contact with fine powder.; Storage condition: multi-layer moisture-proof kraft paper bag; Shelf life: multi-layer moisture-proof kraft paper bag; Pack size: multi-layer moisture-proof kraft paper bag
