QH-450K Spray
Product Details

QH-450K High-End Flame-Retardant Building Rigid Foam Polyether (Suitable for Buildings with High Fire Protection Requirements)

1. Description

This product is a high-end flame-retardant rigid foam polyether polyol, made from sorbitol and amines with flame-retardant additives. It is a light yellow viscous liquid, with excellent flame retardancy (GB 8624-2012 Class B1), high closed-cell rate and waterproof performance, suitable for high fire-protection requirement buildings.

2. Specification


ItemIndexTest Method
Appearance (25℃)Light yellow viscous liquid, no mechanical impuritiesVisual inspection
Hydroxyl Value (mgKOH/g)400-450GB/T 12008.3-2009
Viscosity (25℃, mPa·s)2200-3000GB/T 12008.7-2010
Moisture (%)≤0.15GB/T 12008.6-2010
Acid Value (mgKOH/g)≤0.10GB/T 12008.5-2010
Functionality5-6Chemical titration
Foaming Density (kg/m³)32-45GB/T 6343-2009
Flame Retardant GradeClass B1 (Flame-Retardant)GB 8624-2012
Closed-Cell Rate (%)≥90GB/T 10802-2006

3. Application

Core application scenarios:

  • High-Rise Buildings: High-rise residential buildings and offices, delaying fire spread and ensuring energy conservation.
  • Key Projects: Airports, hospitals and schools, meeting strict fire protection and insulation requirements.
  • Special Industrial Buildings: Chemical plants and dangerous goods warehouses, with flame retardancy and corrosion resistance.
  • Extended Applications: Production of high flame-retardant polyurethane insulation boards.
  • Construction Instructions: Mix with special flame-retardant isocyanate at 1:1 (25℃), spray with high-pressure equipment. Comply with GB 50404-2017; set no-fire area on site.

4. Storage

  • Storage Environment: Special cool warehouse (5-30℃), away from fire, with fire-fighting and explosion-proof facilities.
  • Packaging: 200L corrosion-resistant sealed drums, marked with flame-retardant warnings.
  • Shelf Life: 6 months; test flame retardancy and hydroxyl value after expiration.
  • Transportation: Dangerous goods qualified vehicle, no mixing with flammables/oxidants.
  • Others: Wear protective equipment; rinse with water if in contact with skin/eyes; dispose of waste properly.


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