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
0.4MPa
58psi
0.9MPa
131psi
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
36MPa
5,221psi
70MPa
10,153psi
92MPa
13,343psi
Shear Modulus
13MPa
1,885psi
19MPa
2,756psi
29MPa
4,206psi
Strain at Break
3.5%
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.
