
Component: cotton cloth impregnated with phenolic resin
Usage: Suitable as the structural components with a certain mechanical
electric engine and equipment.
Sheet Size: 1020mm x 2040mm
Thickness: 0.1mm-150mm
Technical Data:
| Properties | Unit | Grade | ||||
| 3025A | 3025B | 3025C | 3027 | |||
| Flexural strength perpendicular to laminations | ≥ | MPa | 100 | 90 | 70 | 90 |
| Bonding strength ( ≥10mm in thickness) | ≥ | N | - | 5500 | 5500 | - |
| Impact strength parallel to laminations (Charpy) | ≥ | KJ/m2 | 8.8 | 7.8 | 5 | 7.8 |
| Insulation resistance after immersion in water (D-24/23) | ≥ | W | 1×106 | - | - | 5×107 |
| Dielectric strength perpendicular to laminations | ≥ | MV/m | 0.82 | - | - | 5.1 |
| (in 90±2℃ transformer oil, 1 mm in thickness) | ||||||
| Breakdown voltage parallel to laminations | ≥ | KV | 1 | - | - | 18 |
| (in 90±2℃ transformer oil) | ||||||
| Permittivity (50Hz) | ≤ | — | - | - | - | 5.5 |
| Density | g/cm3 | (1.30-1.40) | (1.30-1.45) | (1.30-1.45) | (1.30-1.40) | |
| Water absorption (D-24/23, 1.6mm in thickness) | ≤ | mg | 220 | - | - | 145 |
| Color | — | Natural | ||||