Ultra-Fine Cell Size PMI Structural Foam
Rifeng F is a closed-cell rigid foam based on Polymethacrylimide (PMI) polymer, that is completely free of CFC's. It features a Fine Cell Size. With extremely low dielectric constants and particularly favorable transmission properties in the high-frequency region, Rifeng F has been specially designed for antenna applications.
It is the premier core material for aerospace radomes, satellite antennas, and mammography plates. The extremely fine cell size structure ensures minimal resin uptake, which is critical for maintaining signal clarity and reducing weight in high-frequency telecommunications. Additionally, its non-corrosive nature ensures problem-free compatibility with metallic facing materials.
Processing and Production
Rifeng F core materials are highly adaptable and can be processed using hand lay-up, prepreg, or vacuum infusion techniques. It maintains structural stability at pressures up to 0.35 MPa and curing temperatures ranging from 130°C to 150°C.
Maximum Weight Saving and Signal Clarity
When building composite sandwich components, the closed-cell structure of Rifeng F ensures resin stays at the interface. By eliminating excess resin penetration, it minimizes undesirable "dead weight," making it the ideal choice for weight-critical radomes, antennas, and communication structures.
Thermoforming and Shaping
Rifeng F can be easily thermoformed or CNC machined to meet customer requirements. We provide high-precision, pre-shaped, and ready-to-use foam cores in simple or complex geometries.
Mechanical Properties (Typical Values)
|
Property |
Test Method |
Unit |
Rifeng 32F |
Rifeng 52F |
Rifeng 75F |
Rifeng 110F |
| Density | ISO 845 | Kg/m3 | 32±7 | 52±10 | 75±15 | 110±20 |
| Compressive Strength | ISO 844 | MPa | 0.40 | 0.90 | 1.60 | 2.25 |
| Tensile Strength | ASTM D638 | MPa | 0.95 | 1.90 | 2.50 | 3.30 |
| Elastic Modulus | ASTM D638 | MPa | 35 | 75 | 95 | 185 |
| Elongation at Break | ASTM D638 | % | 2.6 | 2.8 | 3.0 | 3.6 |
| Flexural Strength | ASTM D790 | MPa | 0.60 | 1.60 | 2.85 | 4.50 |
| Shear Strength | ASTM C273 | MPa | 0.40 | 0.90 | 1.30 | 2.25 |
| Shear Modulus | ASTM C273 | MPa | 12 | 25 | 40 | 60 |
| Heat distortion resistance | DIN 53424 | ℃ | ≧200 | ≧200 | ≧200 | ≧200 |
Sales range for Rifeng F Grade
| Rifeng F Grade | Size (mm) | Thickness (mm) |
| 32 F | 2500 x 1250 | 1~80 |
| 52 F | 2500 x 1250 | 1~110 |
| 75 F | 2500 x 1250 | 1~90 |
| 110 F | 2160 x 1100 | 1~65 |
Product Advantages
