PMI Foam Core Manufacturer - Custom Production Solutions

PMI Foam Core

Polymethacrylimide (PMI) Foam Core features a cross-linked rigid foam with 100% closed-cell structure, delivering high-performance core material for composite sandwich structures. The uniform cell architecture provides structural stability with low density and exceptional mechanical properties, making it ideal for weight-critical applications across aerospace, automotive, marine, and wind energy industries.

Available in densities from 30 kg/m³ to 350 kg/m³, PMI foam offers compressive strength ranging from 0.4 MPa to 21 MPa, tensile strength from 0.8 MPa to 15 MPa, and shear strength from 0.4 MPa to 10 MPa. The material maintains properties at elevated temperatures with heat distortion temperatures between 180°C and 240°C, while its fine cell structure (0.1-0.3 mm) ensures low resin uptake during processing.

PMI foam demonstrates superior dimensional stability, creep resistance, and high fatigue life compared to Polyvinyl Chloride (PVC) or Polyethylene Terephthalate (PET) alternatives. The closed-cell structure provides thermal insulation and chemical resistance while supporting processing pressures up to 3 bar. Compatible with hand lay-up, vacuum bagging, Resin Transfer Molding (RTM), and prepreg methods, it can be thermoformed at 175-220°C and machined using Computer Numerical Control (CNC) equipment for complex geometries.

Global PMI Foam Board Supplier | RaxPanel Excellence

At RaxPanel, we stand out as the preferred choice for PMI foam boards by offering a customer-centric approach that addresses your unique needs. As one of only three global manufacturers with this advanced capability, we are the sole Asian producer of these premium materials, delivering exceptional strength-to-weight ratios and consistent performance. Our PMI foam boards feature a compressive strength of 0.9 MPa and water absorption of only 0.45%, ensuring structural integrity and moisture resistance for demanding applications in aerospace, marine, transportation, and industrial sectors.

With 20+ years of experience and in-house R&D, design, and production capabilities, we combine global expertise with Asian production advantages. Our Hebei-based facility produces 1500+ m² daily, serving clients in 30+ countries with tailored composite solutions. Every panel reflects our commitment to quality, innovation, and exceeding customer expectations through certified performance and reliable material properties. Choose RaxPanel as your trusted partner for PMI foam boards and experience the difference in advanced materials backed by manufacturing excellence and dedicated support.

Data Sheet
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Parameter	Unit	Value / Range
General Properties
Material Type	–	Polymethacrylimide (PMI)
Cell Structure	–	100% Closed-Cell
Density	kg/m³	30 – 350
Maximum Sheet Size	mm	2500 x 1250
Thickness Range	mm	1 – 120
Typical Cell Size	mm	0.1 – 0.3
Mechanical Properties
Compressive Strength	MPa	0.4 – 21
Compressive Modulus	MPa	20 – 780
Tensile Strength	MPa	0.8 – 15
Tensile Modulus	MPa	37 – 840
Elongation at Break	%	2.4 – 4
Flexural Strength	MPa	0.8 – 26
Shear Strength	MPa	0.4 – 10
Shear Modulus	MPa	14 – 300
Thermal Properties
Heat Distortion Temperature	°C	180 – 240
Processing & Performance
Max Processing Pressure	bar	3
Compressive Creep (max)	%	≤ 2.0

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Frequently Asked Questions（FAQS）

What are the key properties of RaxPanel PMI Foam Core?

RaxPanel PMI Foam Core features a 100% closed-cell structure, providing exceptional structural stability, outstanding mechanical properties, low density, and excellent thermal insulation. It offers high strength-to-weight ratios and a uniformly cross-linked pore wall structure for enhanced durability.

Which industries commonly use PMI Foam Core?

PMI Foam Core is widely used in aerospace, medical devices, sporting goods, automotive, and marine applications. It is ideal for lightweight composite structures in aircraft components, medical equipment, high-performance vehicles, boat hulls, and sporting equipment like bicycles and skis.

How does PMI Foam Core compare to other core materials?

PMI Foam Core offers superior mechanical performance, lower density, and better thermal insulation compared to many other core materials. Its high strength-to-weight ratio and excellent structural stability make it ideal for high-performance applications where weight savings and integrity are critical.

What are the typical density and mechanical specifications of PMI Foam Core?

PMI Foam Core is available in densities ranging from 52-110 kg/m³. Key mechanical properties include tensile strength of 2.35-4.24 MPa, compressive strength of 1.01-3.49 MPa, and shear strength of 0.91-2.51 MPa. It also features a heat distortion temperature of 218-221°C.

Can PMI Foam Core be customized for specific applications?

Yes, PMI Foam Core can be customized in terms of size, thickness, and density. It is available in sheets up to 2500x1250mm with thicknesses from 1mm to 120mm, and can be machined, thermoformed, or processed into complex geometries to meet specific project requirements.

Is PMI Foam Core suitable for high-temperature processing?

Yes, PMI Foam Core maintains stable performance in high-temperature environments, with a heat distortion temperature of 218-221°C. It is compatible with high-temperature cure cycles and can be used in processes like prepreg curing, resin infusion, and autoclave molding.

How should PMI Foam Core be handled and stored?

PMI Foam Core should be stored in a dry environment and handled carefully to preserve quality. It is typically packaged in damp-proof materials to prevent moisture absorption. If exposed to moisture, drying may be required before high-temperature processing to ensure optimal performance.