QHB-6630 Spraying

QHB-6630 High Flame-Retardant Class B1 Blended Polyol for Rigid PU Foam Spray

Product Description

QHB-6600 is a halogen-free high flame-retardant blended polyol specially designed for rigid PU foam spray applications, aiming at fire safety requirements. It adopts a phosphorus-nitrogen composite flame retardant system, which achieves Class B1 flame retardant standard according to GB 8624-2012. The foam produced by reacting with polymeric MDI has excellent fire safety performance, with no dripping, no toxic smoke when burning, and low smoke density. At the same time, it maintains good thermal insulation performance, strong adhesion, and excellent dimensional stability. It is specially designed for high-rise buildings, crowded places, and flammable and explosive industrial sites with extremely high fire protection requirements.

Technical Specifications

Foam & Reaction Properties

• Cream Time: 4–6 seconds
• Gel Time: 10–14 seconds
• Tack-Free Time: 22–28 seconds
• Foam Density: 35–40 kg/m³
• Thermal Conductivity (25℃): 0.021–0.023 W/m·K
• Oxygen Index: ≥30%
• Vertical Burning: Meet Class B1 requirements
• Smoke Density Rating: ≤75
• Compressive Strength: ≥180 kPa

Application

• High-Rise Buildings: External wall insulation systems of high-rise buildings over 50 meters high, complying with the Ministry of Public Security's "Interim Provisions on Fire Protection of External Thermal Insulation Systems and External Wall Decoration of Civil Buildings".
• Crowded Places: Insulation projects of crowded places such as shopping malls, hotels, gymnasiums, and theaters.
• Industrial Buildings: Firewalls and insulation layers of flammable and explosive places such as chemical plants, gas stations, and warehouses.
• Transportation Hubs: Insulation and fire protection projects of important transportation hubs such as airport terminals, railway stations, and subway stations.
• Fire Barriers: Fire barriers in building external wall insulation systems to prevent the spread of fire.

Storage & Transportation

• Store in a cool, dry, and well-ventilated warehouse, with the temperature controlled at 5–30℃, avoiding direct sunlight and high-temperature environments.
• The product is non-corrosive to metals and can be stored in carbon steel and stainless steel containers.
• Avoid contact with chemicals such as strong acids, strong alkalis, and oxidants during storage.
• Shelf life: 6 months. After opening, it should be used up within 15 days. Unused products need to be sealed and placed in a cool place.
• Prevent packaging damage during transportation, avoid rain and exposure to the sun, and transport as ordinary goods.