Sumitomo Epoxy E 3938A

Category: Epoxy , Epoxy; Epoxide
Manufacturer: Sumitomo Bakelite North America, Inc.
Trademark: Sumitomo Epoxy
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: PyYUgQ_Sumitomo-Epoxy-E-3938A.pdf
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E 3938A is a fiberglass reinforced epoxy molding compound, with excellent dimensional stability, good strength, and excellent electrical insulation properties.
General Information
Filler / Reinforcement
  • Glass Fiber
Features
  • Electrically Insulating
  • Good Dimensional Stability
  • Good Strength
Appearance
  • Black
  • Blue
Forms
  • Granules
Processing Method
  • Compression Molding
  • Resin Transfer Molding
PhysicalNominal ValueUnitTest Method
Specific Gravity 1.90g/cm³ASTM D792
Apparent Density 0.75g/cm³ASTM D1895
Molding Shrinkage - Flow 0.10%ASTM D955
Water Absorption - 48 hr (50°C)0.20%ASTM D570
MechanicalNominal ValueUnitTest Method
Tensile Strength (Break)85.0MPaASTM D638
Flexural Strength (Break)160MPaASTM D790
Compressive Strength 250MPaASTM D695
ImpactNominal ValueUnitTest Method
Notched Izod Impact 27J/mASTM D256
ThermalNominal ValueUnitTest Method
Deflection Temperature Under Load ASTM D648
    1.8 MPa, Unannealed 215°C
    1.8 MPa, Annealed > 282°C
CLTE ASTM E831
    Flow 1.9E-5cm/cm/°C
    Transverse 2.8E-5cm/cm/°C
ElectricalNominal ValueUnitTest Method
Dielectric Strength 16kV/mmASTM D149
Dielectric Constant 1(1 MHz)4.10ASTM D150
Dissipation Factor 2(1 MHz)0.010ASTM D150
Arc Resistance 186secASTM D495
Note Message
1 .Wet
2 .Wet
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