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Chengdu SL Communications Industrial Co.,Ltd.
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DMD Epoxy Pre-impregnated Material |
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 Click to enlarge image
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DMD Epoxy Pre-impregnated Material
Prepreg DMD (class F) is formed in the process of procuring the modified F-class DMD with Impregnation of hi-temp resistant Epoxy resin into B-stage by baking.
Characters
It is Class F (155。C) insulating material. This product has long shelf life at room temperature, low procuring temperature and time, showing excellent electrical insulation, bonding and heat-resistant properties.
Application
It is used for liner insulation of copper foil(aluminum foil)-wrapped low voltage coils in dry-type transformer and slot insulation and interphase insulation in B-F class motor and electrical appliances.
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Properties
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Units
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Values
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.Nominal thickness
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mm
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0.15
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0.18
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0.20
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0.23
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0.25
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0.30
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0.35
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0.40
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0.45
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Tolerance
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mm
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±0.02
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±0.025
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±0.03
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±0.03
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±0.03
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±0.03
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±0.035
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±0.040
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±0.045
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Thickness of film
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mm
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0.05
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0.05
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0.05
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0.10
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0.10
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0.5
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0.188
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0.25
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0.25
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DMD thickness
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m
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≥70
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≥80
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≥100
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Resin content
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%
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35±5
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30±5
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25±5
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20±5
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Volatile content
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%
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≤1.5
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Smeltable resin content
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%
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≤85
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Dielectric strength
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MV/m
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≤40
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Breakdown voltage
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Kv
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≥7
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≥7
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≥7
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≥10
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≥10
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≥1
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≥15
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≥18
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≥18
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Tensile and shear strength
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Mpa
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≥3.0
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Heat shrinkage rate
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Crosswise
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%
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≤1.0
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Lengthwise
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≤2.0
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Appearance
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Soft, smooth, free of any delamination impurity, damage ,crack ,blister
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Color
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Red, brown, white
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Thermal rating class
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。C
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≥155
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Special specification can be supplied according to customer’s request.
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