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High-efficiency phosphorus-nitrogen synergistic flame retardancy with low loading requirement (typically 15–22 wt% in polyolefins).
Halogen-free and low-smoke, meeting stringent environmental and safety standards including RoHS and REACH.
Excellent thermal stability up to 300 °C, ensuring compatibility with high-temperature polymer processing.
Good dispersion and compatibility with polypropylene (PP), polyethylene (PE), and thermoplastic elastomers (TPEs).
Non-migrating and hydrolysis-resistant, maintaining long-term flame-retardant performance under humid conditions.
Wire and cable jacketing materials for building wiring and automotive harnesses.
Electrical enclosures and housings for consumer electronics and industrial equipment.
Automotive interior components including dashboards, trim panels, and air ducts.
Household appliance casings such as washing machines, microwaves, and power tools.
Flame-retardant masterbatches for injection molding and extrusion processes.
| Chemical Type | Phosphorus-nitrogen intumescent flame retardant (TPPI: triazine-based piperazine phosphate) |
| Product Form | Free-flowing white granules or fine powder |
| Appearance | White to off-white, odorless solid |
| Density (23 °C) | 1.38–1.42 g/cm³ |
| Onset Decomposition Temperature | ≥280 °C (by TGA, 10 °C/min in N₂) |
| Moisture Content | ≤0.3 wt% (by Karl Fischer titration) |
| pH (1% aqueous suspension) | 6.0–7.5 |
| Key Compliance | RoHS 2015/863/EU, REACH SVHC-free, UL94 V-0 (at ≥20 wt% in PP) |
Q1: What is the primary chemical nature of Changrong TPPI Flame Retardant?
A: Changrong TPPI is a phosphorus-based, reactive flame retardant designed for incorporation into polymer backbones—particularly polyesters and polyurethanes—via covalent bonding during synthesis or curing, offering durable flame resistance without leaching concerns.
Q2: In which polymer systems is TPPI most commonly applied?
A: TPPI is widely used in thermosetting resins such as unsaturated polyester (UPR), vinyl ester, and epoxy systems—especially in composites for transportation and construction—where halogen-free, high-thermal-stability flame retardancy is required.
Q3: How does TPPI contribute to flame retardancy performance?
A: TPPI functions primarily through condensed-phase action—promoting char formation and enhancing thermal stability of the polymer matrix—while also releasing phosphoric acid derivatives upon heating that suppress radical reactions in the gas phase.
Q4: Is TPPI compatible with common catalysts and additives used in resin formulation?
A: Yes—TPPI demonstrates good compatibility with standard peroxide initiators (e.g., MEKP, BPO), accelerators, and fillers. However, compatibility should be verified case-by-case when used with highly acidic or strongly basic additives due to its phosphinate structure.
Q5: What handling and storage precautions are recommended?
A: Store in a cool, dry, well-ventilated area away from strong oxidizers and direct sunlight. Keep containers tightly sealed to prevent moisture absorption, as prolonged exposure to humidity may affect reactivity and dispersion behavior in sensitive formulations.
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E-mail: wangxingqiang@ericwchem.com
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