Among the duct materials for HVAC systems, there are galvanized iron sheets, glass wool, phenolic ducts, polyurethane duct boards, etc. Among them, ducts made of high-performance polyurethane materials, with multiple significant advantages, have now become the preferred choice in many application scenarios.
Material Properties and Core Advantages
Ultra-low thermal conductivity: Reduces heat transfer and effectively lowers energy loss in HVAC systems.
Lightweight with structural strength: Easy to install, while resisting deformation and maintaining stability.
Weather resistance and safety: Resistant to environmental aging, and complies with fire-resistant and non-toxic safety standards.
Optimized acoustic and sanitary performance: Enables sound absorption and noise reduction; the material surface is easy to clean and antibacterial.
Technical Parameters and Certification Standards
| Item | Index |
|---|---|
| Insulation layer density | ≥60kg/m³ (≥80kg/m³ for severe cold regions) |
| Compressive strength | ≥0.3MPa (under 10% deformation) |
| Outer protective layer type | HDPE (conventional) / FRP (for strong corrosion environments) |
| Fire rating | Class B1 (in accordance with GB8624-2012) |
Air Duct Material Compared with Traditional Materials
| Dimension | Polyurethane Duct Board | Galvanized Iron Sheet Duct |
|---|---|---|
| Comprehensive heat loss rate | ≤3% | 12–25% |
| Installation cycle | Reduced by 40–50% | Reference value |
| Life cycle cost | Low (design life of 30 years) | High (replacement every 5–7 years) |
| Environmental adaptability | Acid-alkali resistant / mildew-proof (ASTM G21) | Prone to rusting / cold bridge cond |
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