Stiffness at low weight
A foam core separates the skins and raises bending stiffness without adding a solid web. PMI foam is used where that weight saving matters.
Polymethacrylimide structural foam
PMI Structural Foam Supplier for Composite Sandwich Cores
mosscell supplies PMI structural foam for lightweight sandwich cores. Select a grade, request technical data, ask for a sample, or send your requirement for a quote.
Grade availability, MOQ, lead time and sample terms are confirmed per inquiry.
Start with what you need
The material
What is PMI structural foam?
PMI foam is a rigid, closed-cell foam based on polymethacrylimide. In a sandwich panel it sits between two composite skins as the core: the skins carry in-plane load, while the core separates them, carries shear and stabilises the skins against buckling.
It is specified where low weight, stiffness and elevated-temperature processing need to work together. The right grade depends on the load case, the cure cycle, the panel geometry and the surface finish you need.
No unconfirmed numbers
This site does not publish density values, mechanical properties, sheet sizes or tolerances until they are confirmed in the current TDS for the grade. Ask for the data you need and we will confirm what is available.
Why PMI
Built for sandwich cores
Closed-cell structure
A closed-cell core helps limit resin uptake during infusion and bonding. Actual behaviour depends on the grade and the process.
Elevated-temperature processing
PMI foams are selected for elevated-temperature cure cycles. The allowable cycle is grade-specific and must be confirmed from the TDS.
Machining and forming
Cores can be machined and thermoformed into curved or profiled shapes. Tooling and process settings depend on the grade.
These are qualitative material characteristics, not performance guarantees. Confirm values and processing limits for your grade.
Applications
Where PMI cores are considered
Typical inquiry scenarios include UAV and drone structures, antenna radomes, buoyancy and floats, wind blade components, aerospace and near-space structures, and thin cores for model aircraft.
These are application directions, not published case studies. No customer or project names are shown.
How it works
From requirement to quote
- Send your requirement. Application, grade or series, thickness, sheet size, quantity and delivery country.
- Confirm the grade and data. We confirm availability and share the current TDS where one can be provided.
- Agree commercial terms. MOQ, lead time, sample terms and shipping are confirmed per inquiry.
Questions
Frequently asked questions
What does PMI stand for?
PMI stands for polymethacrylimide. PMI structural foam is a rigid, closed-cell foam used as the core in composite sandwich structures.
Can I download a TDS from this site?
Not yet. No TDS is published for download on this site. Request the current datasheet for your grade and we will confirm what can be shared.
Do you supply samples?
Sample requests are reviewed per inquiry. Grade, thickness, quantity and shipping terms are confirmed before anything is dispatched.
What is the minimum order quantity?
MOQ is confirmed per inquiry. It is not published as a fixed figure.
Are third-party test reports available?
Test reports are not published for download. Availability and permission to share them are confirmed per inquiry.
Can sheets be cut to size?
Send the thickness, sheet dimensions and quantity you need. Cutting availability is confirmed per inquiry.
Send your PMI foam requirement
Tell us the application, grade or series, thickness, sheet size and quantity. We will confirm availability and the next step.