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Its molecular design integrates high aromatic nitrogen content (≥14.75%) derived from phenyl ring structures, which play a critical role in enhancing char formation during combustion—a key mechanism for slowing fire spread. This polyol not only reduces flammability but also meets stringent UL 94 V-0 standards, which require no sustained combustion after flame removal and minimal dripping.
The molecular structure combines reactive tertiary amine groups (ensuring strong cross-linking with isocyanates) and hydrophobic alkyl chains (improving compatibility with PU formulations). Typical performance metrics include a hydroxyl number of 320–400 mg KOH/g (indicating high reactivity), viscosity of 4,000–10,000 cps at 25°C (optimized for spray and pour processes), and functionality >2.8 (supporting dense polymer networks). These properties make it indispensable for applications demanding both mechanical strength (compressive strength ≥1.5 MPa) and fire resistance—a combination rarely achieved in conventional polyols.
Intumescent Flame Retardancy
The nitrogen-rich backbone drives intumescent charring, a process where heat triggers the formation of a thick, insulating char layer that blocks oxygen and slows heat transfer. This mechanism reduces heat release rate (HRR) by 30–40% compared to petroleum-based polyols, as validated by cone calorimeter tests (ISO 5660). Notably, it eliminates reliance on halogenated flame retardants (e.g., brominated compounds), which are restricted under REACH Annex XVII and RoHS due to environmental persistence.
Balanced Reactivity
With moderate gelation activity (gel time 60–90 seconds in standard formulations), this polyol accelerates cross-linking between isocyanates and hydroxyl groups while maintaining processing stability. In spray foam applications, it reduces cream time by 15–20% (from 45 seconds to 36–38 seconds), enabling contractors to cover larger areas per hour without sacrificing foam integrity. This balance prevents common defects like cell collapse or surface cracking.
Thermal and Chemical Stability
Its robust structure ensures a boiling point ≥200°C and low volatility (VOC emissions ≤10 ppm, measured by EPA Method 24), making it suitable for high-temperature processing in composite panel extrusion (operating temperatures 160–180°C). The hydrophobic alkyl chains minimize moisture absorption (≤0.5% after 72 hours at 95% RH), critical for maintaining insulation performance in humid climates or underground applications.
Multi-System Compatibility
This polyol performs consistently in MDI (methylene diphenyl diisocyanate), TDI (toluene diisocyanate), and MDI/TDI blends, adapting to diverse formulation needs. It integrates seamlessly with surfactants (e.g., silicone-based cell stabilizers) and fillers like expandable graphite (enhancing char volume by 20%), further boosting mechanical properties—rigid foams formulated with this polyol achieve compressive strength ≥1.5 MPa and tensile strength ≥2.0 MPa.
Rigid PU Foam Insulation
Building Envelopes: A staple in PIR sandwich panels for commercial roofing and wall systems, it delivers thermal conductivity (λ-value ≤0.022 W/m·K) (ASTM C518) and a class 1 fire rating (ASTM E84, flame spread index ≤25). Data centers and hospitals prioritize it for fire safety in critical infrastructure.
Refrigeration: Ideal for cold storage units and LNG pipeline insulation, where its dimensional stability at -40°C (≤0.3% shrinkage after 1,000 hours) prevents gaps that compromise thermal efficiency.
Composite Materials
Wind Turbine Blades: When blended into epoxy-PU hybrid resins, it improves flame resistance (UL 94 V-0) while reducing smoke density by 25% (ASTM E662). This maintains structural integrity, with tensile strength ≥300 MPa and flexural modulus ≥20 GPa.
Automotive Parts: Used in interior components (door panels, headliners) to meet FMVSS 302 (flame spread ≤100 mm/min) without sacrificing impact resistance (Izod notched impact strength ≥2.5 kJ/m²).
Industrial Coatings
Protective Coatings: Enhances char layer integrity in two-component PU coatings for steel structures, achieving pencil hardness ≥3H (ASTM D3363) and resistance to acetone, toluene, and motor oil (no blistering after 168 hours of immersion).
Container: Store in stainless steel or HDPE drums (200L or 55gal) with tight-sealing lids to prevent corrosion and moisture ingress.
Conditions: Maintain temperatures between 5–30°C and relative humidity ≤60% in a well-ventilated warehouse, away from direct sunlight and heat sources (e.g., radiators).
Handling: Avoid contact with strong acids (e.g., hydrochloric acid) and oxidizing agents (e.g., peroxides), as these can neutralize amine groups and reduce reactivity. Shelf life is 12 months under recommended conditions.
Parameter | Value |
Appearance | Clear, amber liquid |
Nitrogen Content | ≥14.75% (w/w) |
Hydroxyl Number | 320–400 mg KOH/g |
Viscosity (25°C) | 4,000–10,000 cps |
Density (25°C) | 1.03–1.08 g/cm³ |
Flash Point | 92.5°C (PMCC) |
Acid Value | ≤1.0 mg KOH/g |
Its molecular design integrates high aromatic nitrogen content (≥14.75%) derived from phenyl ring structures, which play a critical role in enhancing char formation during combustion—a key mechanism for slowing fire spread. This polyol not only reduces flammability but also meets stringent UL 94 V-0 standards, which require no sustained combustion after flame removal and minimal dripping.
The molecular structure combines reactive tertiary amine groups (ensuring strong cross-linking with isocyanates) and hydrophobic alkyl chains (improving compatibility with PU formulations). Typical performance metrics include a hydroxyl number of 320–400 mg KOH/g (indicating high reactivity), viscosity of 4,000–10,000 cps at 25°C (optimized for spray and pour processes), and functionality >2.8 (supporting dense polymer networks). These properties make it indispensable for applications demanding both mechanical strength (compressive strength ≥1.5 MPa) and fire resistance—a combination rarely achieved in conventional polyols.
Intumescent Flame Retardancy
The nitrogen-rich backbone drives intumescent charring, a process where heat triggers the formation of a thick, insulating char layer that blocks oxygen and slows heat transfer. This mechanism reduces heat release rate (HRR) by 30–40% compared to petroleum-based polyols, as validated by cone calorimeter tests (ISO 5660). Notably, it eliminates reliance on halogenated flame retardants (e.g., brominated compounds), which are restricted under REACH Annex XVII and RoHS due to environmental persistence.
Balanced Reactivity
With moderate gelation activity (gel time 60–90 seconds in standard formulations), this polyol accelerates cross-linking between isocyanates and hydroxyl groups while maintaining processing stability. In spray foam applications, it reduces cream time by 15–20% (from 45 seconds to 36–38 seconds), enabling contractors to cover larger areas per hour without sacrificing foam integrity. This balance prevents common defects like cell collapse or surface cracking.
Thermal and Chemical Stability
Its robust structure ensures a boiling point ≥200°C and low volatility (VOC emissions ≤10 ppm, measured by EPA Method 24), making it suitable for high-temperature processing in composite panel extrusion (operating temperatures 160–180°C). The hydrophobic alkyl chains minimize moisture absorption (≤0.5% after 72 hours at 95% RH), critical for maintaining insulation performance in humid climates or underground applications.
Multi-System Compatibility
This polyol performs consistently in MDI (methylene diphenyl diisocyanate), TDI (toluene diisocyanate), and MDI/TDI blends, adapting to diverse formulation needs. It integrates seamlessly with surfactants (e.g., silicone-based cell stabilizers) and fillers like expandable graphite (enhancing char volume by 20%), further boosting mechanical properties—rigid foams formulated with this polyol achieve compressive strength ≥1.5 MPa and tensile strength ≥2.0 MPa.
Rigid PU Foam Insulation
Building Envelopes: A staple in PIR sandwich panels for commercial roofing and wall systems, it delivers thermal conductivity (λ-value ≤0.022 W/m·K) (ASTM C518) and a class 1 fire rating (ASTM E84, flame spread index ≤25). Data centers and hospitals prioritize it for fire safety in critical infrastructure.
Refrigeration: Ideal for cold storage units and LNG pipeline insulation, where its dimensional stability at -40°C (≤0.3% shrinkage after 1,000 hours) prevents gaps that compromise thermal efficiency.
Composite Materials
Wind Turbine Blades: When blended into epoxy-PU hybrid resins, it improves flame resistance (UL 94 V-0) while reducing smoke density by 25% (ASTM E662). This maintains structural integrity, with tensile strength ≥300 MPa and flexural modulus ≥20 GPa.
Automotive Parts: Used in interior components (door panels, headliners) to meet FMVSS 302 (flame spread ≤100 mm/min) without sacrificing impact resistance (Izod notched impact strength ≥2.5 kJ/m²).
Industrial Coatings
Protective Coatings: Enhances char layer integrity in two-component PU coatings for steel structures, achieving pencil hardness ≥3H (ASTM D3363) and resistance to acetone, toluene, and motor oil (no blistering after 168 hours of immersion).
Container: Store in stainless steel or HDPE drums (200L or 55gal) with tight-sealing lids to prevent corrosion and moisture ingress.
Conditions: Maintain temperatures between 5–30°C and relative humidity ≤60% in a well-ventilated warehouse, away from direct sunlight and heat sources (e.g., radiators).
Handling: Avoid contact with strong acids (e.g., hydrochloric acid) and oxidizing agents (e.g., peroxides), as these can neutralize amine groups and reduce reactivity. Shelf life is 12 months under recommended conditions.
Parameter | Value |
Appearance | Clear, amber liquid |
Nitrogen Content | ≥14.75% (w/w) |
Hydroxyl Number | 320–400 mg KOH/g |
Viscosity (25°C) | 4,000–10,000 cps |
Density (25°C) | 1.03–1.08 g/cm³ |
Flash Point | 92.5°C (PMCC) |
Acid Value | ≤1.0 mg KOH/g |
