Molybdenum Trioxide (MoO3) Smoke Suppressant
Featured inFlame Retardants
Molybdenum trioxide (MoO3) is an inorganic smoke suppressant and flame retardant synergist used primarily in PVC and halogen-containing polymer formulations where reduction of toxic smoke and corrosive gas emissions is critical. It functions by catalyzing cross-linking reactions in the polymer char, retaining carbon in the condensed phase rather than releasing it as smoke particles. MoO3 is a high-performance alternative to zinc stannate in demanding smoke-critical applications such as offshore cables, naval vessels, and underground transit systems.
مشخصات فنی
| appearance | White to pale yellow powder |
| moisture (%) | <0.3 |
| MoO3 content (%) | ≥99 |
| particle size D50 (µm) | 1–10 |
| specific surface area (m²/g) | 1–5 |
| decomposition temperature (°C) | 795 (sublimation) |
حوزههای کاربرد
- Offshore and marine low-smoke zero-halogen (LSZH) cable formulations
- Underground transit and subway system cable and wiring harnesses
- Naval and military halogen-containing cable with reduced smoke toxicity
- High-performance PVC automotive interior materials with low fogging requirements
- Smoke-critical building and infrastructure halogenated polymer components
ویژگیهای محصول
- Superior smoke suppression in PVC: catalyzes carbonaceous char formation, significantly reducing NBS smoke density
- High thermal stability (sublimation at 795 °C) prevents loss during polymer compound processing
- Complements ATH and zinc borate in formulations targeting multiple fire test criteria simultaneously
- Low loading levels (1–5 phr) sufficient for meaningful smoke reduction with minimal impact on other properties
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