Fire-Resistant Board for Container Houses

Fire-resistant boards for container houses typically use Class A non-combustible materials such as magnesium oxide boards or rock wool boards, with fire-resistant temperatures exceeding 1000℃, and some products having fire-resistance limits exceeding 4 hours. Here is a detailed analysis:

1. Types and Performance of Fire-Resistant Materials
The core materials of fire-resistant boards for container houses are magnesium oxide boards (magnesium oxide cement + glass fiber) or rock wool boards. Magnesium oxide boards are made by blending magnesium oxide and magnesium chloride as cementitious materials and glass fiber as reinforcement, then forming through slurry spreading. They possess Class A non-combustible properties, with fire-resistant temperatures reaching 1580-1770℃, and some products even indicating fire-resistant temperatures of 1000-2000℃. Rock wool boards, made from mineral fibers such as basalt, do not soften or deform at 800℃ and release no toxic fumes, with fire-resistance limits exceeding 4 hours.

2. Fire-Resistance Limits and Combustion Characteristics
Fire-resistance limit refers to the time a material maintains structural integrity and thermal insulation under standard fire conditions. Class A non-combustible materials (such as magnesium oxide boards and rock wool boards) typically have fire-resistance limits of ≥4 hours, far exceeding flammable materials like polystyrene and polyurethane (which melt and drip at 80℃ and produce highly toxic combustion products). For example, Zeyu House's foldable container houses use Class A fire-resistant magnesium oxide boards, with fire-resistance limits of ≥5 hours and 1350℃ temperature resistance, capable of withstanding flame喷射 (flame impingement) and maintaining structural integrity.

3. Safety Comparison and Accident Lessons
Container houses using flammable sandwich panels (such as polystyrene and polyurethane) pose significant safety hazards. Accidents like the 2015 nursing home fire in Pingdingshan, Henan, and the 2022 dormitory fire at the Zhenjiang New District construction site were all caused by flammable materials, resulting in rapid fire spread, dense toxic fumes, and difficult escape. In contrast, container houses using Class A non-combustible materials (such as rock wool boards or magnesium oxide board fillings) can effectively delay fire spread, buying time for personnel evacuation and firefighting efforts.

4. Application Regulations and Recommendations
According to fire safety requirements, container houses should prioritize the use of Class A non-combustible materials as fillings and avoid using flammable sandwich panels. During use, keep away from heat sources and open flames, protect electrical cables with conduits, equip with simple firefighting equipment, and maintain a spacing of ≥6 meters between panel rooms. Additionally, magnesium oxide boards also offer waterproof and moisture-proof properties, are environmentally friendly, and provide sound and thermal insulation, making them suitable for scenarios with strict fire safety requirements.