国产精品羞羞答答在线观看_国产主播99_在线视频 你懂得_大地资源av_国产高清成人在线_亚洲精品日韩在线_久久色网_爆操老女人_叶山小百合av一区二区_国产精品自产拍在线观看

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.

Keywords: HN thermosetting polystyrene composite insulation board, HN insulation decoration integrated board, SDJK system, HN sturdy tunnel fireproof board, HN healthy clean board, HN ice fire board, structural insulation integrated board, SXPS high-performance insulation board, molded polystyrene board EPS, graphite molded polystyrene board SEPS, extruded polystyrene board XPS, graphite extruded polystyrene board SXPS, mortar