DIVINYCELL - PES CORE MATERIALS

Divinycell – PES Core materials for commercial aircraft interiors

Recyclable PES foam core material for commercial aircrafts interiors.

A core material series specifically developed for commercial aircraft interiors, seating and food trays. Divinycell F has excellent Fire, Smoke & Toxicity (FST) properties and high-temperature processing capabilities. It improves lifetime cost while decreasing environmental impact and meets the US and European regulatory requirements for commercial aircraft interiors. Divinycell F is available in many different densities.

Divinycell PES core materials give you a foam core built specifically for the demands of commercial aircraft interiors. Made from polyethersulfone, this thermoplastic PES foam core combines excellent Fire, Smoke & Toxicity (FST) performance with high-temperature processing capability, so you can build lightweight sandwich panels that meet the strict safety requirements of modern cabin design.

We developed Divinycell F, our PES foam core series, to help you lower lifetime cost while reducing environmental impact. The material is recyclable and prepreg compatible, so you can build it directly into your existing aerospace manufacturing process without adding extra process steps or specialist tooling.

You'll find Divinycell PES core material at work in seating structures, food trays, interior panels, radomes and other cabin components across the commercial aircraft market. Because it's available in four densities, you can match the core to the mechanical performance each part actually needs, rather than over-engineering the whole structure.

Divinycell F: PES foam core grades and properties

Divinycell F comes in four densities, from F40 to F130, so you can fine-tune weight, stiffness and strength for each part of the aircraft interior. The table below summarises the core mechanical properties for every grade, based on our published datasheet.

All four grades share the same processing window, up to 220°C with vacuum bag or matched-tool methods, and the same excellent FST performance, so you don't have to trade off fire safety for mechanical performance as you move between densities. For the complete property set, including tensile strength, thermal conductivity and dielectric values, download the datasheet from our Brochures, Certificates & Datasheets page.

FST performance and temperature resistance you can certify against

Every Divinycell F grade passes the vertical burn, heat release and smoke density requirements of FAR/CS 25.853, and meets Airbus and Boeing specifications, including ABD 0031, AITM standards and BSS 7238, 7239 and 7322. That gives you documentation you can take straight into your own certification process instead of starting from scratch.

Divinycell PES foam core also handles heat ageing at up to 180°C in service, while vacuum bag or matched-tool processing goes up to 220°C. Combined with excellent hot/wet performance and good chemical resistance, that makes it a dependable choice for cabin components that face repeated thermal cycling over the aircraft's service life.

Applications for Divinycell PES foam core in aircraft interiors

You'll typically specify Divinycell PES core material for interior sandwich panels, seating structures, food trays, class dividers and radomes on commercial aircraft. It's also a strong option for lightweight, fire-safe structures in business jets and urban air mobility cabins, where the same FST and temperature requirements apply.

Once you've selected your grade, use our Core Selection Guide to check it against your load case, or let our Kitting service turn it into pre-cut, ready-to-laminate parts that reduce waste and speed up your build. Both routes get your PES foam core from datasheet to production part faster.

How Divinycell PES core material compares to PVC and PET foam core

Divinycell PES core material is built around FST performance and high-temperature processing rather than maximum mechanical performance per kilogram. If your project needs a structural core for wind, marine or industrial composites, our Divinycell PVC and PET foam core materials are usually the better fit.

If you're building certified commercial aircraft interiors, Divinycell PES core material is the specification to start from. Visit the Divinycell F product page for the full technical detail, or explore how it performs in Aerospace to see it alongside our other certified core materials.