PMI Foam Sandwich Panels - High-Temperature & Lightweight

PMI Foam Sandwich Panel

Polymethacrylimide (PMI) foam sandwich panels feature a cross-linked rigid structural foam core with 100% closed-cell architecture. The foam delivers exceptional compressive strength and rigidity across customizable density ranges, accommodating applications from standard industrial use to aerospace-grade projects requiring performance under extreme stress.

The material withstands temperatures from 180°C to 240°C, maintaining dimensional stability during high-temperature curing processes like Resin Transfer Molding (RTM) without significant creep. Its closed-cell structure provides inherent moisture resistance, preventing water ingress while ensuring compatibility with diverse resins and superior dielectric properties.

PMI foam combines lightweight characteristics with structural integrity, contributing to improved fuel efficiency in transportation applications. The panels serve aerospace applications including aircraft fuselage panels, wing sections, and rotor blades; marine applications such as hulls, decks, and bulkheads; automotive structural elements; wind turbine blades; medical imaging equipment; and high-performance sporting goods.

The foam supports Computer Numerical Control (CNC) machining, thermal molding, and vacuum infusion processes including RTM and Vacuum-Assisted Resin Transfer Molding (VARTM). Pre-formed cores integrate directly into complex geometries, facilitating efficient manufacturing. The Freon-free composition meets fire resistance standards such as Federal Aviation Regulation (FAR) 25.853 while demonstrating resistance to high humidity and extreme temperatures.

Premier PMI Foam Sandwich Panel Manufacturer

With its PMI Foam Sandwich Panel product range, RaxPanel offers a whole line of different grades customizable to a large number of applications. Drawing on over 20 years of industry experience, our structural foam is at the core of lightweight sandwich component designs that display high shear and pressure resistance, even at elevated temperatures.

As a direct manufacturer based in Hebei, China, we leverage in-house R&D and production capabilities to deliver tailored composite panel solutions. Our PMI foam enhances structural integrity and load-bearing capacity, making it ideal for aerospace, automotive, and marine applications where performance under stress is critical.

The material’s adaptability to high-temperature curing processes like RTM and VARTM ensures efficient manufacturing, reducing production time and costs for our global clients. With a daily output of 1500+ m² and service to over 30 countries, RaxPanel combines innovation with reliability.

To ensure consistency in finishes, it is recommended to place an overall order for customized products.

Parameter Category	Parameter	Value / Description	Test Standard
Core Material	Material Type	Polymethacrylimide (PMI) Foam	–
	Cell Structure	100% Closed-Cell	–
Physical Properties	Density Range	Customizable (Standard industrial to Aerospace-grade)	–
	Thermal Resistance	180°C – 240°C	–
	Fire Resistance	FAR 25.853	–
	Environmental Composition	Freon-Free	–
	Moisture Resistance	Inherent (Closed-Cell Structure)	–
	Dielectric Properties	Superior	–
Mechanical Properties	Compressive Strength	High (Varies by Density)	–
	Rigidity / Stiffness	High	–
	Strength-to-Weight Ratio	Exceptional	–
Processing & Fabrication	Curing Temperature Resistance	Up to 180°C	–
	Curing Pressure Resistance	Up to 10 bar (Density Dependent)	–
	Compatible Processes	RTM, VARTM, Vacuum Infusion, Autoclave, CNC Machining, Thermal Molding	–
	Dimensional Stability	High (During High-Temp/High-Pressure Curing)	–
Applications	Primary Sectors	Aerospace, Marine, Automotive, Wind Energy, Medical, Sporting Goods	–
	Typical Components	Fuselage Panels, Wing Sections, Rotor Blades, Hulls, Decks, Bulkheads, Vehicle Body Panels, Wind Turbine Blades, X-ray/CT Bed Boards, Skis, Snowboards	–

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Frequently Asked Questions (FAQS)

What is PMI foam and what are its key characteristics?

PMI foam is a cross-linked rigid structural foam material with a 100% closed-cell structure. It offers outstanding structural stability, excellent mechanical properties, high heat resistance (180~240°C), and is environmentally friendly as it contains no Freon or halogen. It has good fire performance, meeting standards like FAR 25.853, and exhibits low smoke and non-toxic properties.

Why choose PMI foam over other core materials?

PMI foam provides higher specific strength and modulus, better heat resistance, and isotropic properties compared to PVC, PU, or PET foams. It has low compressive creep (≤2.0%) and excellent dielectric properties, making it ideal for high-performance applications where weight reduction and durability are critical.

What mechanical properties can I expect from PMI foam sandwich panels?

PMI foam sandwich panels provide high specific strength and specific modulus, with compressive strength ranging from 0.40 MPa to 9.50 MPa, tensile strength from 0.80 MPa to 7.00 MPa, and elastic modulus from 38 MPa to 380 MPa, depending on density (30-200 kg/m³). They also offer excellent flexural and shear strength.

What sizes, thicknesses, and skin materials are available?

Standard sizes include 2500x1250 mm, 2160x1100 mm, and 1900x900 mm, with thicknesses from 1 mm to 120 mm based on density. PMI foam cores can be combined with FRP, CFRT, aluminum, carbon fiber, stainless steel, HPL, and other skin materials. Custom sizes, thicknesses, and specifications are available upon request.

In which industries are PMI foam sandwich panels commonly applied?

PMI foam sandwich panels are widely used in aerospace, wind power, transportation (such as RVs and refrigerated trucks), medical equipment (e.g., X-ray and CT beds), shipbuilding, sports equipment, and building interiors due to their lightweight, high strength, and temperature resistance.

Do you provide precision cutting and CNC machining services?

Yes, we provide high-precision CNC machining services for complex geometries, ensuring accurate cuts and custom shapes to facilitate ease of installation and meet precise project specifications.

How do you ensure reliable supply and timely delivery for large-scale orders?

With extensive experience serving a global clientele and a robust production system, we maintain consistent supply chains and reliable logistics. Our manufacturing capabilities support timely delivery to meet bulk order demands across various industries.