Technical laminates – tubes and rods
COTTON PHENOLIC TUBES
Tubes type acc. to DIN 7735: Hgw 2085
The cotton phenolic tubes are made from cotton fabric as a basis and phenolformaldehyde resin as a binder. This tubes are suitable for production of chambers of expansionary small-oil schwiters, case bearing etc.
Available diameters: The tubes are produced from inside diameter 5,2 mm.
The wall thickness is from 2 mm.
The length is 650 mm for inside diameter 5,2 mm to 25 mm.
The length is 1350 mm for inside diameter 25 mm and more.
Machining: The tubes are machined by cutting, turning, drilling and milling.
|
Properties |
Unit |
Value |
|
Density |
g/cm³ |
1,15 1,42 |
|
Flexure strength, min. |
MPa |
80 |
|
Pressure strength, min. |
MPa |
40 |
|
Insulation resistance after 96 hours in water 85%, min. |
Ω |
1,0.107 |
|
Breakdown voltage in oil pallarel to layers by 90°C for 20 mm, min. |
kV |
15 |
|
Electrical strenght in oil, pallarel to layers by 90°C, min. |
KV.mm-1 |
2 |