Marine core materials are lightweight structural materials used inside sandwich composite panels for ships, yachts, ferries, offshore platforms, and naval vessels. They are placed between two strong face sheets such as FRP, aluminum, or steel to create lightweight yet highly rigid structures.
The main purpose of marine core materials is to reduce vessel weight while maintaining structural strength and stiffness. Lightweight structures improve fuel efficiency, vessel speed, payload capacity, and operational performance. Core materials also help improve thermal insulation, acoustic insulation, and vibration damping inside marine environments.
Common marine core materials include PVC foam, PET foam, SAN foam, PMI foam, aluminum honeycomb, Nomex honeycomb, PP honeycomb, and balsa wood. Each material has different mechanical properties, fire performance, and cost structures depending on the vessel type and application area.
