 |
| Quantity: | |
|---|---|
The main features of PIR duct materials:
The PIR duct composite developed by the company is a water-foamed modified PIR polymer material which is made of high-quality polyhydroxy compound and isocyanate. Its physical and fire resistance is superior to general composite insulation materials. It has passed GB 8624-2012 "Classification of Combustion Performance of Building Materials and Products" B1, EN 45545-2:2013 R1 HL3, TB/T 3237-2010 fire test, An ideal organic low-temperature insulation material with low thermal conductivity (thermal conductivity ≤0.022W/m·k), good air tightness, oxygen index, flame propagation and other aspects have reached the international advanced level. Contains no harmful substances such as CFC, formaldehyde, free benzene, etc., water absorption rate ≤1%, anti-corrosion, anti-fungal, no dust removal, no slag, anti-deformation, no condensation, neutral, no use environment Bad effects and excellent strength and toughness. Compared with the traditional galvanized iron duct, the cost of construction is reduced by about 10%. Can be widely used in high-speed rail, ships, warships, medical purification and other high-demand duct systems.
The main technical parameters:
(1) Wind tunnel fire performance: non-combustible class A
(2) Core fire performance: flame retardant B1
(3) Thermal conductivity of the core: 0.022 ± 0.001 W / mK (23℃)
(4) Formaldehyde free benzene content: 0
(5) Pressure bearing strength: ≤ 2500Pa
(6) Core density: ≥50kg/m³
(7) Core closed cell ratio: 98%
(8) Sheet size: 4000mm × 1200mm × 10-40mm, special length thickness can be customized
(9) Surface layer thickness: 0.05, 0.08, 0.10, 0.18, 0.22, 0.50mm
(10) Surface bonding strength: 0.14MPa
(11) Core compression strength: 343kPa
(12) Water absorption rate of the core: ≤1.0%
Compared with traditional metal duct performance:
No. | Performance | PIR duct | Traditional metal duct |
1 | Material properties | Thermosetting, integrated design | Metal + external insulation |
2 | Weight | Lighter | Heavier than PIR ducts more than 6 times |
3 | Insulation condition | Self-insulation insulation | External package insulation material |
4 | Thermal conductivity | ≤0.022W/m.k | 0.047-0.052W/m.k |
5 | Water absorption | Almost no water absorption（≤1%，28d） | High water absorption |
6 | Combustion performance | Overall duct A grade; core layer B1, oxygen index ≥ 30, carbon self-extinguishing, no droplets | Flame retardant, duct grade A; outer insulation layer B1 |
7 | Environmental protection effect | No harmful substances, anti-virus and antibacterial (excluding harmful substances such as CFC, formaldehyde, free benzene, etc.) | The outer insulation layer contains a large amount of carcinogens |
8 | Airtight condition | The aluminum alloy broken bridge insulation flange is used to prevent the phenomenon of “cold bridge”; no air leakage, no condensation, no condensation water | Easy to leak at the occlusion, and easy condensation to produce condensed water |
9 | Physical properties | Internal compounding, no dust removal, no slag, anti-deformation | The insulation layer is exposed, and it will age and fall off and stratify for a long time |
10 | Sound insulation | Soundproof | Easy to produce noise |
11 | Product life | Long | Short (easy to be aged and corroded) |
12 | Appearance | Beautiful appearance | Poor appearance |
13 | Energy saving condition | Good thermal conductivity and low air leakage, which can save 20% of electricity consumption | Power consumption |
14 | Product transportation and installation | The installation is simple and convenient, the flanges are interlocked, and it can be assembled on the factory molding site with short cycle | Complex and time-consuming installation |
15 | Production cost | Integrated molding, no need to attach insulation layer, save labor; composite structure, high strength, light weight, saving materials. Compared with traditional metal ducts, the cost is reduced by about 10% | The insulation layer needs to be externally attached, and the air duct material is thick, heavy, labor-intensive, and consumes a lot of materials |
