styropian

Styropian, commonly known as expanded polystyrene foam (EPS), is a lightweight rigid plastic foam composed of many closed cells that trap air. It is produced by polymerizing styrene and expanding the resulting beads with a blowing agent, typically pentane, before fusing them into blocks, boards, or loose-fill forms. The structure gives EPS high thermal insulation, low density, and good moisture resistance, though its mechanical strength depends on density and thickness.

Applications of styropian are widespread. In construction, EPS is used for insulating walls, roofs, and floors, often in boards or as part of structural insulated panels. It is also used for protective packaging, foam inserts, display and model-making, and various decorative or craft purposes. EPS can be manufactured in different densities to balance rigidity, load-bearing capacity, and insulation performance. It is sometimes combined with facings or embedded in composite systems to enhance durability and fire performance.

Environmental and safety considerations are important. EPS is not biodegradable and can persist in the environment if not managed properly. Recycling options exist but depend on local facilities and contamination levels; recycled EPS is used to produce new foam products or other materials. Fragmentation can contribute to litter and wildlife hazards, and burning EPS can release toxic fumes if not properly controlled. When used in construction, compliance with local building codes and fire safety requirements is essential.

Terminology varies by language. Styropian is used in several languages to denote expanded polystyrene foam, while Styropor is a BASF brand name for EPS, and Styrofoam is a common English term associated with similar foam products.