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
Breakdown voltage parallel to laminations
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)      -     -    -  
News
6.12. 2019

SPS IPC Drives 2019

Dear business partners, We would like to thank you for your kind support and especially your visit to our stand at SPS IPC Drives 2019 in Nuremberg.
26.9. 2019

Schönbrunn Zoo in Vienna

On Sunday, September 22, 2019, LABARA s.r.o. for their employees and their families a trip to the zoo in the beautiful gardens of Schönbrunn Palace in Vienna, Austria.
Contact
LABARA s.r.o.
Jindřichov 20, ( areál ZD )
595 01 Velká Bíteš
tel.: +420 566 533 128
fax: +420 566 533 111
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Nahoru