Table 2 Properties of several kinds of membrane materials
From: Review of Large Spacecraft Deployable Membrane Antenna Structures
Property | Units | PET Film | PI Film | |||||
|---|---|---|---|---|---|---|---|---|
Mylar 48 | Mylar 75 | Mylar 92 | Kapton 20EN | Kapton 50EN | UPilex-25S | |||
Thickness | µm | 12 | 19 | 32 | 5 | 12.5 | 25 | |
Destiny | g/cm3 | 1.40 | 1.38 | 1.39 | 1.42 | 1.42 | 1.47 | |
Modulus | GPa | 3.79 | 3.79 | 3.79 | 5.0 | 5.0 | 9.1 | |
Tensile strength | MPa | 186Â (MD)* 234Â (TD)* | 200 (MD) 244 (TD) | 187 (MD) 276 (TD) | 335 | 380 | 520 | |
Thermal expansion coefficient | ppm/°C | 20-60(50-200°C) | 16 (50-200°C) | 16 (50-200°C) | 12 (50-200°C) | |||
Elongation at break | % | 110Â (MD) 80Â (TD) | 130 (MD) 100 (TD) | 140 (MD) 80 (TD) | 55 | 62 | 42 | |
Anti-ultraviolet radiation ability | Low | High | ||||||