en
  • +420 566 533 128

Tubes

Phenolic paper tubes

Characteristics: The tubes made from cellulose paper as a basis and phenolformaldehyde resin as a binder. This tubes are used like insulating and constructive material for various electrical equipment construction.

The tubes are produced from inside diameter 5,2 mm. The wall thickness is from 2 mm, the tube length is 1050 mm.

Machining: The tubes are machined by cutting, milling, drilling, turning.

Type acc. to EN-60893 Unit PFCP 21PFCP 22
Used name Phenolic paper tube Phenolic paper tube
Type according to DIN 7735 Hp 2065 Hp 2066
Type according to NEMA X    XX
Reinforcement paper paper
Resin phenol phenol
       
MECHANICAL PROPERTIES      
Flexural strength flatwise perpendicular to laminations (at 20°C) MPa 160 150
Tensile strength MPa 155 140
Cohesion of layers MPa 170 200
       
DIELETRIC PROPERTIES      
Dielectric strength perpendicular to layers in oil 90°C kV/mm - 13,3
Breakdown voltage parallel to laminations  kV 29 60
Dissipation factor tg                                       
-    at 50 Hz     -   -
-    at 1 MHz     -   -
Permittivity at 1MHz   - -
Insulation resistance after immersion in water MΩ 2x102 1
       
PHYSICAL PROPERTIES      
Density g/cm3 1,1 - 1,2 1,1 - 1,2
Temperature index (TI)   120 120
Absorbency (for 3 mm thickness) mg/cm3 7,1 7,8
Flammability (category)      -    -

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)      -     -    -  

Glass epoxy tubes

Characteristics: The glass epoxy tubes are made from modified glass fabric as a basis and epoxy resin as a binder. This tubes have very good mechanical and electrical properties at high huminidy and mechanical strenght at higher temperatures.

Dimensions: The tubes are produced from inside diameter 5,2 mm. The wall thickness is from 2 mm. The tube length is 1050 mm.

 

Type according EN-60893 Unit EPGC21EPGC22 EPGC23
Used name Glass epoxy tube G10 Glass epoxy tube G11 155° Glass epoxy tube TSE-180 Glass epoxy tube FR-4
Type according to DIN 7735 Hgw2375 Hgw2375.4    
Type according to NEMA G-10 G-11   FR-4
Reinforcement glass fabric glass fabric glass fabric glass fabric
Resin epoxid epoxid epoxid epoxid
           
MECHANICAL PROPERTIES          
Flexural strength flatwise perpendicular to laminations (at 20°C) MPa 360 460 400 410
Compressive strength perpendicular to laminations MPa 175 225 350 - 
Cohesion of layers MPa 290 445 200 -
           
DIELETRIC PROPERTIES          
Dielectric strength perpendicular to layers in oil 90°C kV/mm 13 13 13 14,4
Breakdown voltage parallel to laminations KV  60 60 60 60  
Dissipation factor tg                                         
-     at 50 Hz   0,002 0,003 0,003 0,002
-    at 1 MHz   0,04 0,04 - 0,04
Permittivity at 1MHz   5,2 5,2 5,2 5,2
Insulation resistance after immersion in water MΩ 4x104 8x106 5,5x104 3,6x104
           
PHYSICAL PROPERTIES          
Density g/cm3 1,7 - 1,9 1,7 - 1,9 1,7 - 1,9 1,7 - 1,9
Temperature index (TI)   130 155 180 130
Water absorption (for thickness 3mm) mg/cm3 0,6 0,5 1,5 0,6
Flammability (category)   -   -   - V0

Note: The above values in the table are informative only. Technical sheets for individual products on request.

News
24.5. 2019

INDUSTRY DAYS 2024

Industry Days 2024
17.6. 2022

PLASTEX 2024

PLASTEX 2024 From October 8. to 11.2024, the 65th edition of the International Engineering Fair took place at the Brno Exhibition Center where 1386 exhibiting companies from 42…
Contact
LABARA s.r.o.
Jindřichov 33
595 01 Velká Bíteš
tel.: +420 566 533 128
fax: +420 566 533 111
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Nahoru