Complete Parameters of Elastomeric Foam Insulation Board (NBR/PVC Flexible Foam Rubber-Plastic Board)
Applicable National Standard: GB/T 17794-2021 Flexible Foam Rubber and Plastic Thermal Insulation Products
Material: Fully closed-cell foamed blend of nitrile butadiene rubber and polyvinyl chloride, black flexible thermal insulation material; available in bare boards, single-sided aluminum foil clad boards and self-adhesive boards
1. Standard Dimensions
Thickness (mm, commonly used in engineering)
5, 6, 8, 10, 15, 20, 25, 30, 40, 50
Width
Standard: 1000 mm (1 m); Customized: 1200 mm, 1500 mm
Length (Roll)
8 m, 10 m, 20 m, 30 m; custom-cut flat sheets available
Product Types
Bare elastomeric foam board: General thermal insulation, can be laminated with aluminum foil on site
Aluminum foil clad elastomeric foam board: Outer aluminum foil layer for vapor barrier, sun protection and anti-condensation
Self-adhesive elastomeric foam board: Pressure-sensitive adhesive on the back for easy bonding construction
2. Core Thermal Performance (National Standard Limit Values)
表格
| Performance Item | Grade B1 Qualified Product | Grade B1 Premium Product | Grade B2 Product | Unit |
|---|
| Thermal Conductivity (-20℃) | ≤0.032 | ≤0.030 | ≤0.033 | W/(m·K) |
| Thermal Conductivity (0℃) | ≤0.034 | ≤0.032 | ≤0.036 | W/(m·K) |
| Thermal Conductivity (25℃) | ≤0.037 | ≤0.035 | ≤0.039 | W/(m·K) |
| Normal Operating Temperature | -40 ~ +105 | -40 ~ +105 | -40 ~ +105 | ℃ |
| Max Temperature Resistance of Self-adhesive Type | -40 ~ +85 | -40 ~ +85 | -40 ~ +85 | ℃ |
| Closed Cell Rate | ≥96 | ≥98 | ≥95 | % |
| Volumetric Water Absorption | ≤4.0 | ≤3.5 | ≤5.0 | % |
| Water Vapor Diffusion Resistance Factor μ (Bare Board) | ≥6000 | ≥8000 | ≥5000 | — |
| Water Vapor Diffusion Resistance Factor μ (Aluminum Foil Clad Type) | 10000~20000 | 15000~20000 | ≥8000 | — |
3. Physical and Mechanical Parameters
Apparent Density: 45~95 kg/m³ (national standard maximum limit ≤95 kg/m³)
Tensile Strength: ≥0.5 MPa
Elongation at Break: ≥150%
Compression Resilience (50% compression for 72 hours): ≥90%
Low-temperature Bending Test (-20℃): No cracking or brittle fracture
Dimensional Stability (105℃, 7 days): Linear shrinkage rate ≤10%
4. Combustion Performance (GB 8624-2012)
Grade B1 (Hardly Flammable, standard for central air conditioning and fire protection projects)
Limiting Oxygen Index: ≥32%
Smoke Density Rating (SDR): ≤75
Self-extinguishes once away from flame, no molten drips, low smoke emission
Grade B2 (Flammable, for general civil thermal insulation)
Note: Aluminum foil facing is non-combustible and cannot change the inherent combustion grade of the rubber-plastic substrate.
5. Acoustic Noise Reduction Performance
Noise Reduction Coefficient (NRC): 0.45~0.65; integrates thermal insulation, vibration damping and noise reduction for pipelines and air ducts
6. Additional Parameters of Aluminum Foil Clad Boards
Aluminum Foil Types: Plain bright aluminum, grid embossed aluminum, reinforced mesh aluminum, PET laminated anti-aging aluminum foil
Aluminum Foil Thickness: 8~20 μm, thermal reflectivity ≥85%
Advantages: Block water vapor penetration, prevent condensation, resist ultraviolet rays and aging outdoors, protect rubber-plastic surface
7. Product Categories and Application Scenarios
Standard Grade B1 Elastomeric Foam Board: Central air conditioning air ducts, cold insulation for chilled water, thermal insulation of equipment in machine rooms
Aluminum Foil Clad Elastomeric Foam Board: Outdoor pipelines, roof thermal insulation, anti-condensation in humid environments
Self-adhesive Elastomeric Foam Board: Old pipeline renovation, wall sound insulation, simple wrapping construction
Economical Grade B2 Elastomeric Foam Board: Anti-freezing for household hot water pipes, simple general indoor thermal insulation
ch
English
