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Volume and expansion
Free-rise density alone does not describe the result inside a cavity. Adjust the pour through a representative test.
Foams / Sandwich structures · cavities
Structural epoxy foam cores
To make an epoxy foam core, define cavity geometry, filling volume and part performance. The 2080 M17 and M25 systems with 2086 M offer two reference densities and require testing of the actual expansion process.
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Before you buy
Three points to guide your choice
Skins and cavity preparation
Define bonding to the composite skins. In deep cavities, wet the walls with a compatible liquid resin before foaming to help expansion; verify the result in a representative test.
Heat and performance
Foaming releases heat. Test the intended volume and plan post-curing if you need maximum thermal performance.
What to buy for this project
Selected materials
Compare their purpose and conditions of use.
Check sizes and options on each product page.
Black epoxy foam · low-density core
Resoltech 2080M17 Syntactic Epoxy Foam 170 kg/m3
2080 M17 / 2086 M system for closed-cell structural cores or filling cavities in composite parts.
Before choosing
Test pour volume and expansion inside the cavity before manufacturing. Reaction heat increases with mass and confinement; this recommendation concerns the system with 2086 M, whose data sheet is linked.
White epoxy foam · higher-density core
Resoltech 2080M25/2086M Syntactic Epoxy Foam 250 kg/m3
2080 M25 / 2086 M system for epoxy foam cores compatible with epoxy laminates and prepregs.
Before choosing
Final density depends on expansion and available space. Test the actual cavity and allow for post-curing if the part needs the system's maximum thermal performance.
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