Melamine Cyanurate MC-15 (Ultra-Fine, D50 ≤2μm)
Número CAS: 37640-57-6
MC-15 is an ultra-fine grade of Melamine Cyanurate (MCA), a halogen-free, nitrogen-based additive flame retardant with D50 ≤2μm and D98 ≤6μm. The exceptionally fine particle size delivers superior dispersion in polymer matrices including PA, PE, unsaturated polyester (UPR), silicone rubber, and epoxy resin systems. MCA is a supramolecular complex formed by melamine and cyanuric acid through hydrogen bonding (C3H6N6·C3H3N3O3). Its flame-retardant action is multi-mechanism: endothermic decomposition absorbs combustion heat, sublimation of melamine further cools the system, decomposition gases dilute flammable volatiles and oxygen, and the generation of cyanuric acid in the condensed phase ensures anti-drip performance. MC-15 achieves UL 94 V-0 at 1.6 mm in unreinforced PA6 at 12–14% loading and in PA66 at 10–12% loading. ROHS and EU REACH registered.
Especificaciones Técnicas
| Whiteness | ≥ 97% |
| Appearance | White crystalline powder |
| Bulk Density | ≥ 0.25 g/cm³ |
| Dispersibility | Good |
| Melamine Residue | ≤ 0.02% |
| Moisture Content | ≤ 0.2% |
| Molecular Formula | C3H6N6·C3H3N3O3 |
| Particle Size D50 | ≤ 2 μm |
| Particle Size D98 | ≤ 6 μm |
| pH (10% suspension) | 5.0–6.5 |
| Purity (MCA content) | ≥ 99% |
| Cyanuric Acid Residue | ≤ 0.2% |
| 1% Decomposition Temperature | ≥ 310 °C |
Aplicaciones
- Unreinforced and glass fiber reinforced PA6 and PA66 compounds
- PBT and PET engineering plastic FR formulations
- Unsaturated polyester resin (UPR) systems
- Epoxy resin flame-retardant encapsulants and composites
- Silicone rubber FR compounds
- PE cable and wire flame-retardant jacketing
Características Principales
- Halogen-free — compliant with ROHS, EU REACH, and OEKO-TEX requirements
- Ultra-fine D50 ≤2μm — best dispersion in the MC series, suitable for thin-wall parts
- High thermal stability — 1% decomposition temperature ≥310°C, no foaming in GF-reinforced PA66
- Multi-mechanism FR action: endothermic + gas dilution + anti-drip in condensed phase
- Low addition level: V-0 at 1.6mm in PA6 (12–14%) and PA66 (10–12%)
- High whiteness (≥97%) — minimal impact on natural color of light-colored compounds
- Insoluble in water and organic solvents — long-term stability, no blooming
- Layered crystal structure provides inherent lubrication in the polymer melt
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CAS Number
37640-57-6
Category
Químicos Retardantes de LlamaAvailability
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