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Halogen-free formulation ensures low smoke density and reduced toxic gas emission during combustion.
Excellent thermal stability, maintaining performance up to 300 °C in polymer processing conditions.
High phosphorus content provides efficient char formation and condensed-phase flame inhibition.
Good compatibility with polyolefins, engineering plastics, and thermoplastic elastomers.
Non-migrating design ensures long-term flame-retardant efficacy without blooming or leaching.
Wire and cable jacketing for LSZH (Low Smoke Zero Halogen) applications.
Flame-retardant polypropylene (PP) and polyethylene (PE) used in automotive interior components.
Electrical enclosures and housings requiring UL94 V-0 rating at 1.6 mm thickness.
Flexible PVC alternatives in building & construction profiles and flooring materials.
Thermoplastic elastomer (TPE) compounds for consumer electronics casings and connectors.
| Chemical Type | Organophosphorus compound (phosphinate-based) |
| Product Form | Free-flowing white granular powder |
| Appearance | White to off-white granules |
| Density (25 °C) | 1.45–1.50 g/cm³ |
| Moisture Content | ≤ 0.3 wt% (by Karl Fischer titration) |
| Thermal Decomposition Onset (TGA, N₂, 10 °C/min) | ≥ 280 °C |
| Phosphorus Content | 18.5–19.2 wt% |
| Primary Applications | Halogen-free flame retardant for polyolefins, TPEs, and engineering thermoplastics |
Q1: What is the primary chemical nature and mechanism of action of CXB-1020C?
A: CXB-1020C is a reactive brominated flame retardant designed for incorporation into polymer backbones—particularly in unsaturated polyester resins and vinyl ester systems. It functions primarily through gas-phase radical quenching during combustion, helping to suppress flame propagation without significantly compromising the mechanical integrity of the cured matrix.
Q2: Is CXB-1020C compatible with common curing agents used in polyester composites?
A: Yes, CXB-1020C demonstrates good compatibility with standard peroxide initiators such as MEKP and BPO, and does not interfere with typical gel time or exotherm profiles when dosed within recommended ranges. Compatibility should always be verified under actual process conditions due to formulation-specific variables.
Q3: How does CXB-1020C compare to additive brominated flame retardants in terms of leaching resistance?
A: As a reactive type, CXB-1020C forms covalent bonds with the polymer network during curing—resulting in markedly lower potential for migration or leaching compared to non-reactive, physically blended alternatives. This enhances long-term flame performance stability, especially in humid or chemically aggressive service environments.
Q4: What are the typical dosage guidelines for achieving UL 94 V-0 rating in cast polyester applications?
A: Dosage depends on resin composition, filler content, and part geometry—but CXB-1020C is typically used at low concentrations, generally ranging from 0.1% to 2% by weight relative to total resin solids. Achieving specific fire ratings requires full system validation, including flame testing under representative processing and curing conditions.
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