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Halogen-free formulation ensures low smoke density and reduced toxic gas emission during combustion.
Excellent compatibility with flexible and rigid polyurethane foam systems without compromising physical properties.
Efficient char-forming mechanism enhances flame resistance while maintaining foam integrity under thermal stress.
Low volatility and thermal stability support processing at standard PU foaming temperatures (up to 180°C).
Non-migrating design provides long-term flame retardancy retention in finished products.
Flexible polyurethane foam for upholstered furniture and automotive seating.
Rigid polyurethane insulation boards used in building envelope systems.
Spray-applied polyurethane foam (SPF) for roofing and cavity wall insulation.
Integral skin and microcellular PU parts requiring UL 94 HB or ASTM E84 Class A compliance.
Conformal coatings and encapsulants for electronics requiring fire-safe polymer matrices.
| Chemical Type | Organophosphorus-based flame retardant (phosphinate/phosphate hybrid) |
| Product Form | Powder |
| Appearance | White to off-white free-flowing powder |
| Primary Applications | Flexible & rigid polyurethane foams, integral skin PU, elastomers |
| Key Features | Halogen-free, non-migrating, thermally stable, low dust generation |
| Benefits | Meets FMVSS 302, CAL 117, and EN 13501-1 B-s1,d0 requirements when properly formulated |
| Density (25°C) | 1.4–1.6 g/cm³ |
| Decomposition Onset Temperature | ≥260°C (TGA, 10°C/min, air atmosphere) |
Q1: What types of polyurethane systems is PhireGuard FC-63 compatible with?
A: PhireGuard FC-63 is formulated for compatibility with a broad range of flexible and rigid polyurethane foams, including slabstock, molded, and integral skin systems. It demonstrates good dispersion in both water-blown and low-water formulations, and is typically used in conventional amine-catalyzed and metal-catalyzed PU chemistries.
Q2: How does PhireGuard FC-63 achieve flame retardancy without halogenated chemistry?
A: PhireGuard FC-63 operates via an intumescent mechanism, promoting char formation and reducing heat release during combustion. Its phosphorus- and nitrogen-based synergistic structure enhances thermal stability and suppresses flame propagation in the condensed phase, aligning with industry demand for halogen-free flame retardant solutions.
Q3: Does PhireGuard FC-63 affect foam processing or physical properties?
A: When incorporated at recommended dosage levels, PhireGuard FC-63 generally maintains acceptable cream time, rise profile, and demold characteristics. It may slightly influence compression set and tensile strength depending on formulation balance, so optimization trials are advised to ensure target performance is retained.
Q4: What is the typical dosage range for effective flame retardancy?
A: Effective performance is generally achieved at low concentrations, typically ranging from 0.1% to 2% by weight relative to total polyol content. The optimal dosage depends on foam density, cell structure, base polymer composition, and target fire performance requirements such as ASTM E84 or EN 13501-1 classification.
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