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Highly dispersible fumed silica pigment engineered for rheology control and suspension stabilization.
Surface-treated with dimethoxydimethylsilane to ensure excellent compatibility in non-aqueous systems.
Delivers consistent thixotropic behavior without gelling, enabling smooth processing and long-term storage stability.
Low abrasivity and high purity support demanding applications in coatings, inks, and specialty polymers.
Reproducible particle morphology and surface chemistry ensure batch-to-batch performance reliability.
High-performance solventborne industrial coatings and automotive refinish systems.
UV-curable and energy-curable inks for packaging and digital printing.
Thermoset and thermoplastic composites requiring anti-settling and sag resistance.
Adhesives and sealants where controlled viscosity and anti-sag properties are critical.
Specialty elastomers and silicone-based formulations needing reinforcement and flow modulation.
| Chemical Type | Fumed silica (surface-treated) |
| Product Form | Free-flowing white powder |
| Appearance | White, odorless, amorphous powder |
| BET Surface Area | 150 ± 15 m²/g |
| SiO₂ Content | ≥99.8 wt% |
| Ignition Loss (1000 °C) | 1.5–2.5 wt% |
| DBP Absorption | 220–260 mL/100 g |
| pH (4% aqueous dispersion) | 3.5–4.5 |
Q1: What is the primary function of TIXOSIL 43 in polymer systems?
A: TIXOSIL 43 is a surface-treated fumed silica pigment designed to provide controlled rheology modification and anti-settling performance in liquid-filled or paste-like polymer formulations, particularly in silicone elastomers and high-viscosity RTV/HTV compounds.
Q2: Is TIXOSIL 43 compatible with platinum-cured silicones?
A: Yes — TIXOSIL 43 is specifically engineered for compatibility with both condensation- and addition-cure (platinum-catalyzed) silicone systems, without interfering with cure kinetics or final mechanical properties when properly dispersed.
Q3: How should TIXOSIL 43 be incorporated into a formulation?
A: It is recommended to disperse TIXOSIL 43 under high-shear mixing conditions prior to adding other components. Pre-wetting with a portion of the base polymer or solvent often improves deagglomeration and ensures uniform distribution throughout the matrix.
Q4: Does TIXOSIL 43 affect transparency or clarity in cured silicone gels?
A: Due to its fine particle size and optimized surface treatment, TIXOSIL 43 generally supports good optical clarity in transparent silicone systems when used at typical dosage levels — though final appearance depends on dispersion quality and base polymer refractive index matching.
Q5: What storage conditions are recommended for optimal shelf life?
A: Store in original sealed packaging in a cool, dry environment away from moisture and direct sunlight. Prolonged exposure to ambient humidity may reduce flowability and dispersion efficiency over time.
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