PTFE-based electromagnetic shielding film is a PTFE waterproof and breathable membrane with excellent combination of conductive loss type, dielectric loss type, magnetic loss type and other absorbing materials to prepare a high-performance product that integrates conductivity, shielding, absorbing, ventilation and waterproof Product.
Features:
1) Good electrical conductivity
2) With waterproof and breathable performance
3) Excellent chemical resistance
4) High heat resistance and thermal stability (with adhesive layer -45℃~125℃)
5) Strong environmental aging ability, resistant to ultraviolet aging, no color change for 20 years
6) Physical image of the product with electromagnetic shielding and wave absorbing functions
Application areas:
1) Metal box gasket
2) Wire and cable noise reduction
3) Gas sensor
4) Electrode film of metal air battery
5) Electromagnetic shielding of wireless equipment, electronic equipment and communication equipment
Performance parameters:
| No. | Test item | Test standard | Test data |
| 1 | Shielding effectiveness (1GHz with adhesive layer) | GJB 6190-2008 | ＞45dB |
| 2 | Volume resistivity (four probe method) | GB/T 1551-2009 | 1.5Ω·cm |
| 3 | Air permeability | QC/T979-2014 | 10ml/min/cm² |
| 4 | Hardness / ShoreA | ASTM D2240 | 60±15 |
| 5 | Density g/cm³ | GB/T 6343-2009 | 0.90±0.20 |
Remarks: The air permeability can be adjusted according to the specific application; different thicknesses correspond to different product densities.
