GPO-3 Polyester glass mat parts
GPO3 parts has high mechanical capability,
good dielectric capability,flame retard and arc resist.
GPO3 Polyester glass mat laminated sheets is made of alkali-free glass mat impregnated with polyester resins paste by processing under heat and pressure.
GPO3 parts is processed by GPO3 Polyester glass mat laminated sheets.
GPO3 parts used as electrical product of high voltage and high frequency.
Item | Unit | Value (GPO3 parts) |
Flexural strength ≥ | MPa | 166 |
Tensile strength ≥ | MPa | 78 |
Compressive strength ≥ | MPa | 157 |
Shear strength ≥ | MPa | 68 |
Impact strength ≥ Flatwise Edgewise | kJ/m2 |
90 45 |
Voltage endurance perpendicular to lamination in transformer oil at 25±2 oC ≥ | kV/mm |
14 |
Insulation resistance ≥ Under normal condition After boil in water | Ω |
1×1014 1×1011 |
Surface resistivity ≥ Under normal condition After impregnated in water | Ω | 1×1015 |
Volume resistivity ≥ Under normal condition After impregnated in water | Ω.cm | 35×1015 |
1MHz loss factor ≤ | - | 0.05 |
1MHz loss relative dielectric coeff ≤ | - | 5.5 |
Arc resistance ≥ | s | 180 |
Heat deflection temperature ≥ | oC | 200 |
Flammability ≥ Oxygen index UL94 flame | - - |
40 94V0 |
Water absorption ≤ | % | 0.20 |
