What core material is best for marine sandwich panels?

There is no single best core for every project. PVC foam is popular for balanced cost and water resistance. PET foam is valued for recyclability and temperature stability. Aluminum honeycomb offers exceptional stiffness and fire performance. PP honeycomb is impact-resistant and moisture tolerant. Balsa provides high compressive strength but must be carefully sealed. The correct choice depends on fire rules, load requirements, acoustic targets, cost limits, and installation environment.

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What core material is best for marine sandwich panels?

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