Materials Composition of Sandwich Panels
Sandwich panels, also known as sandwich core panels, are structural boards composed of multiple layers of materials. The primary components include outer and inner facings, adhesive layers, and core material layers. Below is a detailed introduction by LUSEN to the materials used in each layer:
|
Layer |
Material Type |
Function & Characteristics |
|
Outer/Inner Facings |
Color-coated steel sheets, aluminum alloy sheets |
Provide wind pressure resistance and decorative effects. |
|
Adhesive Layer |
Adhesives |
Serve as bonding and connecting agents between layers. |
|
Core Material Layer |
Rock wool, glass fiber insulation |
Offer thermal insulation for buildings, characterized by excellent heat insulation properties. |
Additionally, there are other types of sandwich panels such as metal-faced sandwich panels, which may have different structures and materials but follow similar basic principles. For example, metal-faced sandwich panels typically consist of two layers of metal or non-metallic outer skins (known as faces or facings) with a filling material (called the core or core layer) sandwiched in between. This structure combines the advantages of different materials, providing superior insulation, fire resistance, waterproofing, and aesthetic appeal.
Special Types of Sandwich Panels
Some specialized types of sandwich panels use different materials to meet specific requirements. For instance, there is a type of lightweight high-strength sandwich panel that includes a glass fiber layer with carbon fiber layers on both sides. The glass fiber layer is impregnated with an epoxy resin composite filled with hollow glass microspheres. This construction results in a sandwich panel that is lighter in weight and higher in strength.
Conclusion
In summary, the materials composition of sandwich panels mainly consists of outer and inner facings, adhesive layers, and core material layers. The specific materials depend on the application area and design requirements. Common materials include color-coated steel sheets, aluminum alloy sheets, adhesives, rock wool, and glass fiber insulation. For special applications, advanced materials such as glass fibers, carbon fibers, and epoxy resin composites can be utilized.
