China 3025 Phenolic Cotton Fabric Laminated Sheet/ Bakelite Sheet/ Micarta, Find details about China Insulation Material, Laminates from 3025 Phenolic Cotton Fabric Laminated Sheet/ Bakelite Sheet/ Micarta
The technical requirements | |||||
No | Property | Unit | Normal value | ||
1 | Flexural strength perpendicular to layer direction | MPa | ≥ 100 | ||
2 | Impact strength parallel to the layer direction (Charpy method) | kJ/m 2 | ≥ 8.8 | ||
3 | Electrical strength perpendicular to the layer direction at 90± 2 ° C transformer oil | MV/m | Refer to table 3 | ||
4 | Breakdown voltage parallel to the layer direction at 90± 2 ° C transformer oil | kV | ≥ 1 | ||
5 | Insulation resistance after immersing in water | MΩ | ≥ 1 | ||
6 | Water absorption | mg | Refer to table 4 |
Tested Item | Unit | standard |
Density | g/cm3 | 1.30-1.42 |
Martin temperature "vertical" | ºC | >=125 |
Vertical layer to bending strength "vertical | Mpa | >=105 |
Tensile strength "vertical" | Mpa | >=65 |
Impact strength "beam method without gap samples, longitudinal | kJ/ | >=25 |
Bonding strength | N | >=5400 |
Vertical layer to strength (90 ±2 ºC in transformer oil > 3mm, thickness, the side processing to 2.0 mm ±0.2 mm) | MV/M | >=2.0 |