Current Product

Prepreg DMD

Prepreg DMD


Prepreg DMD is formed in the process of precuring the modified F-class DMD with Impregnation of hi-temp resistant B-stage Epoxy resin by baking. With long shelf life at room temp, low precuring temp & time, excellent electrical insulation, bonding and heat-resistant properties. Its thermal Glass is F, widely used for liner insulation of copper foil (aluminum foil)-wrapped Low voltage coils in dry-type transformer and slot insulation & phase insulation in B~F class Motor & electrical appliances.

Data Form

Properties Unit Value
Nominal thickness mm 0.18 0.20 0.23 0.25
THK Tolerance mm ±0.030 ±0.035
Tensile Strength MD No bending N/10mm ≥70 ≥80 ≥100
Soluble Resin content g/m² 75±15
volatile content % ≤1.5
Dielectric Strength MV/m ≥40
Appearance Neat and smooth surface, No obvious non-uniform resin, No inclusions against quality, No surface damage at unreeling. No bubbles, folding damage etc.

Application Suggestion

Temp(℃) Room Temp→80 80 →120 120 →150 150 →120 120 →80
Heating time(h) 0.5 0.5-1 0.5-1 1 0.15
Baking time(h) 1~2 2~4 4 1~2 2


  • 1. Standard width: 1000mm, or slit into the width required Packing: In Carton
  • 2. Min Qty: 1000kg each size in a lot.
  • 3. Shelf life: 6 months at 25c from the date of delivery. Over the period, it can be still be used if the re-testing is in agree with the technical requirements. The rolls should stand up, far from heat sources, fire and sunshine.
Note:The values noted in above technical specification are given only for our customers' reference and should not be used in writing specifications.