Light weight Airduct for EMU

Material Advantages   Yudelboard is integral foamed rigid PIR panel with 80μm embossed aluminum foil on both sides. Hexagonal PIR molecular structure is more stable than polyurethane. One-step integral foaming outperforms post-bonding process in peel strength, durability and environmental performance.   80μm thick foil prevents particle shedding, meets 30-year service requirement, nearly 20 years proven rail application.   The properties of raw materials utilized in BIDE's lightweight air duct system are detailed in the table below.   Item Unit Parameter Test Standard Remark Apparent Density kg/m³ 80-88 GB/T 6343   Operating Temperature ℃ -40~+100 GB/T 2423   Thermal Conductivity W/m·K 0.024 GB/T 10295   Water Absorption Rate % 1 GB/T 8810   Peel Strength N/mm 0.28 GB/T 2790   Tensile Strength MPa 1.812 GB/T 1040   Sound Insulation Performance dB 14 ISO 10140   Environmental Protection Performance / Compliant TB/T 3139   Flame Retardancy / HL3 EN 45545     As…