Specifications
-low water absorption-high mechanical strength,thermal resistant
-good electric property
| Name: | epoxy glass fiber sheet | ||
| Model NO: | FR-4 | ||
| Base Material: | Glass fibre + epoxy resin | ||
| Density: | 2 | ||
| Item: | Testing method | Unit | Result |
| Fire Retardancy Grade: | A | -- | 94-V0 |
| Flame Resistance: | C-96/20/65 | °C | 170-180 |
| Voltage Resistance(penetrating) | C-96/20/65 (in 25 °C oil) | KV/mm | 18 |
| Voltage Resistance | C-96/20/65 (in 25 °C oil) | KV/mm | 12 |
| Arc Resistance | C-96/20/65 | S | 60-80 |
| Permittivity(1MHZ): | C-96/20/65 | -- | 4.0-5.0 |
| Permittivity(1MHZ): | C-96/20/65 +D-48/50 | -- | 4.5-5.5 |
| Volume resistivity: | C-96/20/65 +C-96/40/95 | Ω-cm | 5*10^11-10^13 |
| Surface resitance: | C-96/20/65 +C-96/40/90 | Ω | 5*10^11-10^12 |
| Insulation Resistance: | C-96/20/65 +D-2/100 | Ω | 10^12-10^13 |
| Conmpressive Strength(Vertical): | A | kg/mm2 | 29-34 |
| Conmpressive Strength(Horizontal): | A | kg/mm2 | 19-24 |
| Anti-impact intensity(Parrallellable): | A | kg-cm/cm2 | 7-9 |
| Bending strength(Horizontal): | A | kg/mm2 | 40-50 |
| Clevability: | A | kg | 850-1000 |
| Adhesive strength: | A | kg | 700-900 |
| Compressive strength(Horizontal): | A | kg/mm2 | 20-24 |
| Water absorption rate: | E-24/50 +D-24/23 | % | 0.07-0.12 |
