9309 Epoxy Phenolic Laminated Cardboard Paper Sheet
9309 epoxy phenolic laminated paperboard is made of epoxy phenolic resin impregnated electrical impregnated paper by baking and hot pressing. It is mainly used for insulating structural parts such as oil-immersed transformer. 9309 cardboard is suitable for manufacturing main insulators of voltage transformers above 60 kV.
Plate Thickness: 3-60 mm
Specific Gravity: 1.55-1.6g/cm3
Plate Width: 1020-2020 mm 1220-2450 mm
Insulation Class: Class B
Characteristics: Higher mechanical and electrical performance.
Usage: It is suitable for large transformer as insulation structure parts and can be used in transformer oil.
Technical index:
| S.N. | Name of Index | Unit | Index Value |
| 9309 | 9309-1 |
| 1 | density | g/cm3 | — | 1.28～1.4 |
| 2 | Vertical Layer Bending Strength: Longitudinal | Mpa | — | ≥122.5 |
| transverse | ≥103.0 |
| 3 | Tensile Strength (Thickness 1 mm or more): Longitudinal | Mpa | — | ≥88.2 |
| transverse | ≥68.2 |
| 4 | Impact Strength (Thickness 1.2mm-9.5mm): Longitudinal | kJ/㎡ | — | ≥11.8 |
| transverse | — | ≥7.8 |
| (Thickness over 9.5mm): Longitudinal | — | ≥17.6 |
| transverse | ≥11.76 | ≥13.7 |
| 5 | Splitting strength | kN/m | — | ≥98 |
| 6 | Martin temperature | ℃ | — | ≥150 |
| 7 | thermal stability | ℃ | 100 | 130 |
| 8 | Oil resistance (4h in transformer oil) | ℃ | — | 130 |
| 9 | Insulation Resistance (thickness 2 mm or more): Normal | Ω | ≥1.0×1011 | ≥1.0×1011 |
| After wetting | ≥1.0×108 | ≥1.0×108 |
| 10 | Dielectric loss factor: normal |
| ≤0.09 | ≤0.045 |
| After wetting | ≤0.10 |
| 11 | Parallel layered withstand voltage: 5 min in oil at 20 +5. | kV | 16 | — |
| 5 min in 90 +2 C oil | 8 | — |
| 12 | Parallel layered withstand voltage: (90 +2 /min in oil above 8mm thickness) | kV | - | 70 |
| 13 | Volumetric resistivity | Ω.m | ≥1.0×1010 | — |
| 14 | Vertical layered withstand voltage (20 +5 /5 min in oil) | kV | 22 | — |
| 15 | Adhesion strength | N | 3528 | —
|
Company Profile
Yingkou Dongyuan Electrical Insulation Wide Plate Co., Ltd. is located in China (Liaoning) Free Trade Pilot Zone. The factory covers an area of 17,000 square meters, with more than 100 employees and fixed assets of 40 million yuan. The company's main products are: Electrical Laminated Wood, insulation boards (3240 Epoxy Board, 3021 cardboard, 3025 Cotton Cloth Board, 9309 low dielectric loss cardboard Etc.), Laminated Wood insulation parts (compression rings, clips, round rods, screw nuts, pads, pallets, support frames, fasteners and other finished products in various shapes) and other insulating materials. It owns 32 sets of main production equipment including 8000 ton press, 6000 ton press, 5000 ton press, gluing machine, etc. After many years of hard work, the company has completed the original accumulation and the equipment renovation, and has newly developed the nation's largest board ( 4000mm × 2000mm, 3000mm × 1500mm, 2700mm × 2700mm ...), filling the domestic gap and setting a record for the large format of the Insulation Board. Its products have passed the national ISO quality management system certification and have the only large-scale all-metal detector in China. The products are applied to various power distribution systems and components such as transformers, switch cabinets, and motors. The company adheres to the credibility of the first, quality first, continues to work on the development of insulation materials products, consolidate the leading position in the market, and strive to provide users with the best service.
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