High-frequency precision for advanced antenna applications
ROHACELL® HF
ROHACELL® HF is a closed-cell rigid foam based on polymethacrylimide (PMI) chemistry completely free of CFC’s. With its extremely low dielectric constants and particularly favorable transmission properties at high frequencies, ROHACELL® HF is ideal for use in antenna applications.
Properties
Density
32kg/m³
2.00lbs/ft³
52kg/m³
3.25lbs/ft³
75kg/m³
4.68lbs/ft³
Compressive Strength
0.3MPa
44psi
0.7MPa
102psi
1.5MPa
218psi
Tensile Strength
1MPa
145psi
1.9MPa
276psi
2.8MPa
406psi
Shear Strength
0.4MPa
58psi
0.8MPa
116psi
1.3MPa
189psi
Elastic Modulus
—
—
—
—
—
—
Shear Modulus
13MPa
1,885psi
19MPa
2,756psi
29MPa
4,206psi
Strain at Break
—
4%
4.5%
High-frequency optimisation
ROHACELL® HF is specifically designed for antenna applications, offering extremely low dielectric constants and excellent high-frequency transmission properties.
Compatibility with metallic layers
Its fine-cell structure ensures minimal resin uptake and problem-free compatibility with metallic facing materials, avoiding corrosive effects.
Diverse applications
Ideal for use in radomes, mammography plates, and antennas ranging from miniature mobile devices to large fixed ship-based systems.
