English
| Quantity: | |
|---|---|
XF-435; XF-390; XF-360; XF-2402N; XF-2020;
Product Specs | Hydroxyl value | Acid value | Mositure | Viscosity | Application Areas |
mgKOH/g | mgKOH/g | % | mPa.s(25℃） | ||
XF-435 | 500±50 | ≤3.0 | ≤0.15 | 10000±2000 | Home appliances/Piping/Panels, etc. |
XF-390 | 400±20 | ≤2.0 | ≤0.15 | 2000±500 | Home appliances/pipes/panels, etc. |
XF-360 | 370±20 | ≤2.0 | ≤0.15 | 1500±500 | |
XF-2402N | 240±10 | ≤1.5 | ≤0.1 | 8000±1500 | PIR systems/panels/pipes, etc. |
XF-2020 | 200±10 | ≤1.5 | ≤0.1 | 7000±1000 |
Used in:
Refrigerators
Freezers
Water heaters
Display cabinets
Vending machines
Key requirements:
Low thermal conductivity (low lambda value)
Fine and uniform cell structure
Good flowability in cabinet injection
Strong adhesion to metal/plastic liners
Cyclopentane compatibility and emulsion stability
Typical polyester polyol characteristics:
OH value: 200–320 mgKOH/g
Viscosity: 2,000–8,000 mPa·s
Aromatic polyester backbone for better insulation and fire performance
These systems are designed for pentane or HFO blowing agents and provide:
Good thermal insulation
Excellent adhesion
Short demolding time
Good mechanical properties
Used in:
Cold storage panels
Wall and roof panels
Continuous sandwich panel lines
Refrigerated truck panels
Important performance requirements:
High compressive strength
Flame retardancy
Dimensional stability
Stable pentane emulsification
Smooth panel surface
Fast curing for continuous production
Aromatic polyester polyols are preferred because their aromatic structure improves:
Fire resistance
Char formation
Mechanical strength
Thermal stability
| Component | pbw |
|---|---|
| Aromatic polyester polyol | 100 |
| Silicone surfactant | 1.5–2.5 |
| Cyclopentane | 10–18 |
| Water | 0.5–1.5 |
| Catalyst (amine) | 1.5–3.0 |
| Trimer catalyst | 2.0–5.0 |
| Flame retardant | 10–20 |
| PMDI | Index 180–300 |
| Property | Benefit |
|---|---|
| Excellent pentane compatibility | Stable processing |
| Fine closed-cell structure | Better insulation |
| Aromatic content | Improved fire performance |
| Good adhesion | Strong bonding to metal skins |
| Low thermal conductivity | Energy savings |
| Fast cure profile | Higher production efficiency |
| Property | Home Appliances | PIR Panels |
|---|---|---|
| Core density | 30–38 kg/m³ | 35–45 kg/m³ |
| Closed cell content | >90% | >90% |
| Lambda value | 18–22 mW/m·K | 20–24 mW/m·K |
| Compressive strength | 150–220 kPa | 150–300 kPa |
| Fire behavior | B2/B3 | B1/B2 |
Phthalic anhydride (PA)
Terephthalic acid (TPA)
Recycled PET
Adipic acid
DEG (Diethylene glycol)
MEG (Monoethylene glycol)
MPG
Glycerol
Aromatic polyester polyols based on PA/DEG or recycled PET are especially common for PIR panels because they combine:
Cost efficiency
High aromaticity
Excellent fire behavior
Good pentane compatibility
Packaging & Storage:
220kg/drum; 1200kgs/IBC Drum
Store in cool, dry and ventilated place, period of validity is one year.
