China 3025 Phenolic Cotton Cloth Laminated Sheet Cotton Phenolic Bakelite Sheet, Find details about China 3025 Phenolic Cotton Fabric Laminate Sheet, 3025 Insulation Phenolic Cotton Sheet from 3025 Phenolic Cotton Cloth Laminated Sheet Cotton Phenolic Bakelite Sheet
properties | Unit | Grade | |
3025 | |||
Flexural strength perpendicular to laminations | ≥ | MPa | 100 |
Compression strength perpendicular To laminations | ≥ | MPa | 245 |
Bonding strength | ≥ | N | 5400 |
Dielectric Strength Perpendicular to Laminations(in 90±2°C transformer oil,1mm in thickness) | ≥ | KV/mm | 0.82 |
Breakdown voltage parallel to laminations(in 90±2°CTransformer oil) | ≥ | kV | 1 |
Permittivity(1MHz) | ≤ | - | 5.5 |
Dissipation factor(1MHz) | ≤ | - | 0.04 |
Insulation Resistance after impregnated in water | ≥ | Ω | 1.0×106 |
Density | g/cm3 | 1.45-1.5 | |
Water absorption(1mm in thickness) | mg | 206 | |
Color | - | Brown | |
Tensile strength | ≥ | MPa | 98 |
Impact strength | ≥ | KJ/m2 | 8.8 |
Temperature index (short time). | ≥ | - | 120 |
ITEM | UNIT | VALUE | ||
3025 | 3025B | 3025C | ||
Density | g/cm3 | 1.30~1.42 | 1.30~1.45 | 1.30~1.45 |
Martens heat resistance (LW) | ºC | 125 | 125 | 125 |
Flexural strength≥ | MPa | 110 | 90 | 70 |
Tensile strength≥ | MPa | 70 | - | - |
Adhesion force≥ | N | 5390 | 4500 | 4500 |
Impact strength,charpy≥ | kJ/m2 | 25 | 20 | 15 |
Voltage endurance perpendicular to lamination in transformer oil at 90±2ºC≥ | kV/mm | - | - | - |
Thickness:0.5~1mm | 4 | - | - | |
Thickness:1.1~2mm | 3 | - | - | |
Thickness:2.1~3mm | 2 | - | - | |
- | - | 2.5 | 2.5 | |
Area of the sheets | mm | 1020×1220,980×1980,1020×2040 |