Diamond Polyester Film DDM Layer Insulation Film

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Product Details

Description: DDP adhesive specialty polyester film is modified epoxy resin showed DDP -shaped insulating coating on electrical baked polyester film into a stage of semi-curing the insulation material. As the diamond on a plastic resin coated polyester film is not the whole point of it was like, no coating is very conducive to the passage of air between the insulating material exclusion and liquid immersion, so that partial discharge corona damage and to minimize the damage value.

DDMDiamind polyester film with resin

Advantage: It has excellent electrical, mechanical, and impregnating properties, no deformation after thermosetting. It also has excellent tensile strength, reliable heat resistance and good voltage characteristic.


Nominal thicknessmm0.050.750.10
Thickness tolerancemm±0.005±0.01±0.01
Standard widthmm1000mm

Tensile StrengthN/10mmLengthwise≥100≥110≥150
Breakdown voltageKV≥6≥8≥9
Bond strengthKpa≥350

Curing temperature and time
90℃ ±5℃/16h or 130℃ ±5℃/6h

Storage life 
6 months, room temperature, dry and well-ventilated enviroment

Application: Be in gas or oil insulation system for insulation layer. ,
It is mainly used for sulfur hexafluoride transformer and the transformer layer insulation and turn insulation.

DDM application

Product curing conditions:

90℃±5℃/16 hours; or 110℃±5℃/6hours


Should be stored in a temperature of not higher than 25℃, dry, ventilated and clean environment,
and should avoid high temperatures and sunlight. The storage period is six month;,
over the storage period of the examination, successful applicants an still be used.

Welcome to contact Haotai, which is one of best diamond polyester film ddm layer insulation film manufacturers and suppliers in China, you can also get diamond polyester film ddm layer insulation film free sample from our factory.