Phenolic cotton tubes
Characteristics: Rolled cotton phenolic rods are made from cotton fabric and phenolformaldehyde resin as a binder
Applications: They are suitable for the production of expansion joints, low-load bearing bearings, skeletons and transformer bodies, hydraulic discs, sealing and guiding rings.
Production dimensions: They are manufactured from an internal diameter of 5.2 mm, wall thickness min. 2.5 mm, length 650 mm - from the diameter of 5.2 to 25 mm, length 1350 mm - from the diameter of 25 mm. Other dimensions in agreement with the manufacturer.
| Type acc. to EN-60893 | Unit | PFCC22 |
|---|---|---|
| Used name | Phenolic cotton tube | |
| Type according to DIN 7735 | Hgw2085 | |
| Type according to NEMA | ||
| Reinforcement | Phenolic cotton fabric | |
| Resin | phenol |
|
| MECHANICAL PROPERTIES | ||
| Flexural strength flatwise perpendicular to laminations (at 20°C) | MPa | 120 |
| Compressive strength perpendicular to laminations | MPa | 100 |
| Cohesion of layers | MPa | 100 |
| DIELETRIC PROPERTIES | ||
| Dielectric strength perpendicular to layers in oil 90°C | kV/mm | 2 |
| Breakdown voltage parallel to laminations | KV | 10 |
| Dissipation factor tg |
||
| - at 50 Hz | - | |
| - at 1 MHz | - | |
| Permittivity at 1MHz | - | |
| Comparative tracking index (CTI) | MΩ | 6 |
| PHYSICAL PROPERTIES | ||
| Density | g/cm3 | 1,15 - 1,35 |
| Temperature index (TI) | 120 | |
| Water absorption (for thickness 3 mm) | mg/cm3 | 10 |
| Flammability (category) | - | |
| Type according EN-60893 | Unit | PFCP 21 | PFCP 22 | PFCC22 | |
| Used name | Phenolic paper tube | Phenolic paper tube | Phenolic cotton tube | ||
| Type according to DIN 7735 | Hp 2065 | Hp 2066 | Hgw2085 | ||
| Type according to NEMA | X | XX | |||
| Reinforcement | paper | paper | Phenolic cotton fabric | ||
| Resin | phenol | phenol | phenol | ||
| MECHANICAL PROPERTIES | |||||
| Flexural strength flatwise perpendicular to laminations (at 20°C) | MPa | 160 | 150 | 120 | |
| Compressive strength perpendicular to laminations | MPa | 155 | 140 | 100 | |
| Cohesion of layers | MPa | 170 | 200 | 100 | |
| DIELETRIC PROPERTIES | |||||
| Dielectric strength perpendicular to layers in oil 90°C | kV/mm | - | 13,3 | 2 | |
|
KV | 29 | 60 | 10 | |
| Dissipation factor tg |
|||||
| - at 50 Hz | - | - | - | ||
| - at 1 MHz | - | - | - | ||
| Permittivity at 1MHz | - | - | - | ||
| Insulation resistance after immersion in water | MΩ | 2x102 | 1 | 6 | |
| PHYSICAL PROPERTIES | |||||
| Density | g/cm3 | 1,1 - 1,2 | 1,1 - 1,2 | 1,15 - 1,35 | |
| Temperature index (TI) | 120 | 120 | 120 | ||
| Water absorption (for thickness 3 mm) | mg/cm3 | 7,1 | 7,8 | 10 | |
| Flammability (category) | - | - | - | ||