China Fr4 Epoxy Glass Laminated Sheet for Generators, Find details about China Fr4 Epoxy Glass Laminate, Epgc202 Epoxy Glass Laminate from Fr4 Epoxy Glass Laminated Sheet for Generators
NO. | PROPERTIES | UNIT | METHODE | STANDARD VALUE | TESTING VALUE |
1 | Flexural strength perpendicular to lamination- normal room temperature | MPa | ISO 178 | ≥ 350 | 492 |
2 | Notch impact strength parallel to lamination (Notched charpy) | kJ/m2 | ISO 179 | ≥ 37 | 63 |
3 | Dielectric strength perpendicular to lamination (in oil 90±2ºC) 1.0mm in thickness | kV/mm | IEC 60243 | ≥ 14.2 | 22 |
4 | Breakdown voltage parallel to laminations (in oil 90±2ºC) | kV | IEC 60243 | ≥ 45 | 75 |
5 | 1MHz dielectric coefficient | - | IEC 60250 | ≤ 5.5 | 4.85 |
6 | 1MHz loss factor | - | IEC 60250 | ≤ 0.04 | 0.02 |
7 | Water absorption rate, 1.6mm in thickness | % | ISO 62 | ≤ 0.25 | 0.06 |
8 | Insulation resistance impregnated in water, D-24/23 | Ω | IEC 60093 | ≥ 5.0×1010 | 2.5×1011 |
9 | Flammability | class | IEC 60695 | FV0 | FV0 |
10 | Bonding strength | N | ≥ 6500 | 8174 |