A sandwich panel is a composite material consisting of two steel sheets with an insulating core-typically made of polystyrene, polyurethane, or rock wool-sandwiched between them. These panels generally range in thickness from 50 mm to 200 mm and are commonly used for building walls, roofs, partitions, and ceilings. They are characterized by their lightweight nature, thermal insulation properties, fire and moisture resistance, and ease of installation.
Performance Characteristics of Sandwich Panels
1. Thermal Insulation: The core materials-such as polystyrene, polyurethane, or rock wool-provide excellent thermal insulation, effectively reducing energy consumption.
2. Fire and Moisture Resistance: The outer layers are typically made of color-coated steel, which offers good water and fire resistance. The core materials are also non-flammable and moisture-resistant (non-absorbent).
3. High Strength: The steel sheets on either side protect the core material, ensuring the structural integrity and stability of the panel.
4. Ease of Construction: Being lightweight and easy to install, sandwich panels help shorten construction timelines and reduce project costs.