Application field:
Mainly used in dry-type transformers as copper (aluminum) foil wrapped low-voltage interlayer insulation, which can effectively ensure the insulation performance and electrical safety of transformers. In addition, it can also be used for slot insulation and inter turn insulation of B and F grade motors and electrical appliances, which can meet the insulation and mechanical performance requirements of motors and electrical appliances during operation.
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Prepreg DMD
Main Parameters:
Insulation class: F class (155 °C)
Color: red
Width: 1000mm
Thickness: 0.16mm,0.18mm,0.20mm,0.23mm,0.25mm
Can be customized
It has long shelf life at room temperature,low precuring temperature and time,showing excellent electrical insulation, bonding and heat-resistant properties.
Epoxyresin Prepreg DMD for Drytype Transformer
Brief Introduction of Epoxy Prepreg DMD
Epoxy prepreg DMD is made of impregnated modified epoxy resin by baking and rewinding. Epoxy resin can be cured quickly, with low molecular volatiles and low shrinkage.
It has long shelf life at room temperature,low precuring temperature and time,showing excellent electrical insulation, bonding and heat-resistant properties.
Main Features of the Epoxy Prepreg DMD
—Insulation class: F class (155 °C)
—Color: red
—Width: 1000mm
—Thickness: 0.16mm,0.18mm,0.20mm,0.23mm,0.25mm
—Can be customized
—Epoxy prepreg DMD has been approved by UL (NO.: E310670) ,ROHS and REACH test.
| Item | Unit | Requirement | ||||||
| Nominal thickness | mm | 0.18 | 0.2 | 0.23 | 0.25 | 0.30 | 0.40 | |
| Thickness tolerance | mm | ±0.02 | ±0.03 | ±0.04 | ||||
| Grammage | g/m2 | 200±20 | 240±28 | 250±37 | 290±45 | 380±53 | 460±54 | |
| Tensile strength | MD no bending | N/10mm | ≥80 | ≥120 | ||||
| Breakdown voltage | KV | ≥8 | ≥10 | |||||
| Soluble resin content | g/m2 | ≥45 | ||||||
| Volatile content | % | ≤1.5 | ||||||
| Tensile shear strength | Mpa | ≥5 | ||||||
| Temperature index（TI） | — | ≥155 | ||||||
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