Choosing an appropriate core to maximize panel performance is essential to achieving optimal structural and functional outcomes while keeping expenses low and lightweight. Composite sandwich panels consist of paired rigid facings bonded to a thicker, lighter core, and the core plays a key role in determining rigidity, thermal performance, mass, and کانکس ویلایی longevity.

Polyurethane cores are popular in industrial and HVAC applications due to their excellent thermal insulation and secure lamination properties. They offer robust load-bearing capacity and are typically deployed where low heat transfer is required. However, they can be vulnerable to thermal degradation and may release harmful fumes in a fire unless chemically stabilized for fire safety.

PS cores in EPS or XPS configurations is extensively applied because it is inexpensive, convenient to shape, and provides good moisture resistance. It is often chosen for short-term installations but has reduced thermal efficiency and safety ratings. Extruded PS has enhanced strength and rigidity than expanded, making it a more suitable selection for high-stress environments.

Cellular core panels, typically made from aluminum alloys, kraft paper, or thermoplastics, offer outstanding stiffness per unit mass. They are perfect for aviation, automotive, and advanced manufacturing because they provide structural stability with minimal added weight. However, they are cost-prohibitive and require specialized manufacturing techniques. Their porous design also means they may need additional sealing for moisture or thermal insulation applications.

Mineral wool cores stand out for their non-combustible nature and noise-reducing properties. Often used in public infrastructure and heavy-duty environments, they meet stringent fire safety codes and retain strength during prolonged exposure to fire. While they are bulkier compared to EPS or PUR and offer reduced R-value per thickness, they are indispensable in applications where occupant safety and comfort are paramount.

In choosing the optimal core, consider the environment the panel will be exposed to, the required load capacity, thermal and acoustic needs, fire safety regulations, and financial limitations. For example, a warehouse wall may benefit from affordable foam cores, while an airplane cabin would require the high strength and lightness of a honeycomb core. Conducting field trials and environmental simulations and consulting with material engineers can help avoid costly mistakes. The optimal selected core doesn’t just boost functionality—it can significantly prolong structural durability.