3520 phenolic paper tube - transformer insulation tube
Epoxy phenolic glass cloth laminated pipe referred to as epoxy tube
1. definition and use
Epoxy phenolic glass cloth laminated tube is made of non-alkali glass fiber cloth as the base material, epoxy phenolic resin as a binder heating baking and curing from the curling products, with high mechanical strength, high Wet electrical performance and good stability, suitable for mechanical, electrical and electronic products.
2. epoxy phenolic glass cloth laminated pipe technical requirements
2.1 epoxy phenolic glass cloth laminated tube appearance
The surface should be flat, not allowed to have a layer, foam, but allowed to have no more than the wall thickness to allow the deviation of the slight wrinkles and processing finishing traces. The inner wall allows for slight wrinkles. Both ends should be cut neatly.
2.2 epoxy phenolic glass cloth laminated pipe main performance indicators
|
number |
project name |
unit |
experiment method |
index |
||
|
One |
density |
g/cm |
GB/T5132 |
≥1.40 |
||
|
Two |
Bending strength |
MPa |
Attached to A in Q/JBQP50 |
≥176 |
||
|
Three |
Compressive strength |
MPa |
GB/T5132 |
≥69 |
||
|
Four |
Shear strength |
MPa |
Attached to A in JB/T8150 |
≥14.7 |
||
|
Five |
Volume resistance series Under normal After immersion
|
Ω·m |
GB/T1410 |
≥1.0×1010≥1.0×108 |
||
|
Six |
Parallel layer to insulation resistance Under normal After immersion
|
Ω |
GB10064 |
≥1.0×1010≥1.0×107 |
||
|
Seven |
Dielectric loss tangent, 50Hz |
- |
GB/T5132 |
≤0.030 |
||
|
Eight |
Vertical layer to withstand voltage In the (90 +2) ℃ of the transformer oil pressure 5min Wall thickness
1.5mm |
kV |
GB/T5132 |
internal diameter |
internal diameter |
|
|
Nine |
Parallel layer to withstand voltage Pressure in the (90 + 2) ℃ transformer oil 5min |
kV |
GB/T5132 |
25 |
||
|
Ten |
Surface withstand voltage Damps after 24 hours in normal air pressure 5min |
kV |
GB/T5132 |
12 |
||
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