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355 modified diphenyl ether glass cloth laminated tube
Standard: Q/BJ022-2004
Properties:355 modified diphenyl ether glass cloth laminated tube is made of processed alkali-freefiber glass cloth which is used by electrician and diphenylether as adhesive. It is formed after compressing, drying and then solidifying.
Characteristics:the thermal degree of 355 modified diphenyl ether glass cloth laminated tube isclass H. It has high mechanical properties and dielectric properties. Applicablein dry type transformer or other isolated components of electric equipmentswhich require high temperature.
Technical requirement
Smoothsurface, no bubble, no crease or crack, no scratch or overheating marks.
Specification:
1. Standard inner diameter: 5.0mm-1200mm
2.Standard wall thickness: ≥1mm
3.Standard length: 350mm-1600mm
Table1. Specification and tolerance
| Inner diameter(Standard) | Tolerance | Wall thickness(the thinnest) | Tolerance of wall thickness | |
thickness≤10 | thickness＞10 | |||
| 6—30 | ±0.4 | 1.5 | ±0.5 | ±1.0 |
| 32—80 | ±0.5 | 1.5 | ±0.5 | ±1.0 |
| 85—150 | ±0.5 | 2.0 | ±0.5 | ±1.0 |
| 155—350 | ±0.7 | 2.0 | ±0.5 | ±1.0 |
| 155—350 | ±1.0 | 2.0 | ±0.5 | ±1.0 |
| Note：length can be 450mm to 1000mm, tolerance can be more or less 1.0mm. | ||||
Table2: technical data
| Number | Properties | Unit | Characteristic | ||
| 1 | density | g/cm³ | ≥1.4 | ||
| 2 | water absorption | % | --- | ||
| 3 | axial compressive strength | Mpa | ≥98 | ||
| 4 | shearing strength | Mpa | ≥19.60 | ||
| 5 | flexural strength | Mpa | ≥176 ≥78(180±2℃) | ||
| 6 | volume resistivity | normal | MΩ. m³ | ≥1x 10 to power 10 | |
| thermal 180±2℃ | ≥1 x 10³ | ||||
| after soaking | ≥1 x 10² | ||||
| 7 | wastage factor 50Hz | ≤0.06 | |||
| 8 | vertical compressive strength | normal | MV/m | ≥7 ≥5 | |
| thermal 180±2℃ | |||||