The fire rating test report of thermosetting polystyrene board should be based on national standards and industry specifications, and its core content should include the following points:
1. Classification and standards of fire protection levels
B1 level (flame retardant material): The thermosetting polystyrene board treated with flame retardant must meet the indicators of FIGRA ≤ 120 W/s and total heat release ≤ 7.5MJ in GB 8624-2012.
B2 level (combustible material): Materials that have not been treated or have insufficient flame retardant effect, with low combustion performance.
Grade A (non combustible material): Some high-performance thermosetting polystyrene boards (such as high-density ones) can reach Grade A2 through special processes and require non combustible testing (furnace temperature rise ≤ 50 ℃).
2. Testing items and methods
Key tests:
Single unit combustion test (SBI): Evaluate flame spread and heat release rate.
Flammability test: Measure the height of the flame tip (≤ 150mm) and combustion droplets.
Oxygen index test: to determine the self extinguishing property of materials.
Auxiliary indicators: smoke density, toxic gas release (such as HCN ≤ 50ppm).
3. Content of the testing report
Basic information: sample name, specifications, testing unit, and testing institution.
Performance data: physical parameters such as thermal conductivity (≤ 0.060W/(m · K)) and compressive strength (≥ 0.15MPa).
Conclusion: Clarify the fire protection level (such as B1/A2 level) and whether it complies with standards such as JG/T 536-2017.
4. Precautions
Sample preparation: Cut according to standard size and equilibrate in a constant temperature and humidity environment for 48 hours.
Equipment calibration: The error of cone calorimeter and other equipment should be controlled within ± 2%.
On site construction impact: Splicing gaps exceeding 3mm may result in a 40% decrease in fire resistance, and should be used in conjunction with fire-resistant sealant.
If specific testing report templates or further interpretations are needed, more detailed requirements can be provided.
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