PTFE copper clad laminate is made of PTFE resin impreganted E glass fiber cloth as insulation material,then covering with copper foil single side or double sides.
PTFE copper clad laminate has advantage in low dielectric constant and dielectric loss,static chemical performance,heat resistance.They are mainly used in the fields of military engineering,satellite communication,mobile Telekommunikation,Satellite broadcasting radar equipment and computer.
| Properties | PTFE copper clad sheet(type:F4DC255) |
| Test items | Test conditions | Unit | Measured value |
| Tensile strength | Tensile machine | kg/cm2 | 1000 |
| Operating temperature | Baking oven | ℃ | 250℃ for continuity operating, 300℃ for discontinuity operating |
| Chemical performance | Immerse into acid alkali salt | Ω | inert |
| Surface resistivity | Normal | Ω.cm | ρs≥1012 |
| Volume resistivity | Normal | KV | ρv≥1013Ω.cm |
| Breakdown voltage | δ=0.1 | KV | ≥0.8 |
| δ=0.15 | KV | ≥1.1 |
| δ=0.20 | KV | ≥1.3 |
| δ=0.40 | KV | ≥1.5 |
| Dielectric Constant | 106Hz(1GHz) | εr | 2.550.05 |
| Dielectric loss tgδ | 106Hz(1GHz) | tgδ | ≤2~5×10-4 |
