GPO-3 Polyester glass mat laminated sheet

GPO-3 Polyester glassmat laminated sheets(GPO3 sheet,glass mat sheet,Polyester sheet)is made of alkali-free glassmat impregnated with polyester resins paste by processing under heat and pressure.GPO-3 sheet (glass mat sheet,Polyester sheet)having high mechanical capability ,good dielectric capability ,flame retard and arc resistance,GPO-3 sheet used as electrical product of high voltage and high frequency. Item UnitValueFlexural strength≥ MPa166Tensile strength≥ MPa78Compressive strength≥ MPa157Shear strength≥ MPa68Impact strength≥ Flatwise Edgewise kJ/m29045Voltage endurance perpendicular to laminationin transformer oil at 25±2Co ≥kV/mm14Insulation resistance≥ Under normal condition After boil in waterΩ1×10141×1011Surface resistivity≥ Under normal condition After impregnated in water Ω1×1015Volume resistivity≥ Under normal condition After impregnated in water Ω.cm35×10151MHz loss factor ≤ -0.051MHz loss relative dielectric coeff ≤ -5.5Arc resistance≥s180Heat deflection temperature≥ oC200Flammability≥ Oxygen index UL94 flame -4094V0Water absorption≤ %0.20