Phenolic paper tube,phenolic laminated tube,phenolic paper insulating tube.
Specifications
Phenolic paper tube is made from impreganated electrical grade kraft paper.
Phenolic resin bonded paper tubing is formed by hot rolling baking electrical insulating rolling paper or insulating paper impregnated with phenolic resin under heat and pressure. It is insulation class E(120 degree). Wth high mechanical heat-resistant and dielectric properties, it is used as insulating structural parts in electrical equipments, also used under humidity environment and in transformer oil.
| name of product | phenolic paper tube 10.5*13.5*1000mm | time of production | March,2012 | |
| standard no. | JB/T3172-1999 | |||
| item | unit | standard value | test result | test mode |
| density | g/cm3 | ≥1.10 | 1.19 | JB/T3172-1999 |
| water absorption | % | ≤8.0 | 5.5 | |
| heat stability(120℃/24H) | ----- | NOT FLAW | NOT KNOB | |
| electrical strength in oil(90℃,5MIN) | ----- | ≥8.0MV/M |
8.5MV/M PASS |
|
| dielectric loss factor | ----- | ≤3*102 |
2.1*102 |
|
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