Epoxy Cosmic Epoxy E4940P

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Technical Data Sheet

physical property Test ConditionTest MethodTest Result
density1.85 g/cm³
Tightening rate2.0到5.0
Shrinkage rate0.20到0.40 %
Water absorption rate0.25 %
hardnessTest ConditionTest MethodTest Result
Barcol Hardness65
Mechanical propertiesTest ConditionTest MethodTest Result
tensile strength82.7 MPa
Flexural modulus13800 MPa
bending strength103 MPa
compressive strength193 MPa
Impact resistanceTest ConditionTest MethodTest Result
Impact strength of cantilever beam gap27 J/m
Electrical performanceTest ConditionTest MethodTest Result
Surface Resistivity1E+15 ohms
Volume resistivity1E+15 ohms·cm
dielectric strength14 kV/mm
dielectric constant3.90
dielectric constant4.30
Dissipation Factor0.012
Dissipation Factor0.011
Dissipation Factor180 sec
Dissipation Factor56000 V
Thermal performanceTest ConditionTest MethodTest Result
Linear coefficient of thermal expansion0.67 W/m/K
Linear coefficient of thermal expansion260 °C
Glass Transition Temperature175 °C
2.5E-05 cm/cm/°C
7E-05 cm/cm/°C
IMPORTANT NOTES: Plas.com collected the data in the data sheet from the material manufacturers. Plas.com makes the best effort to improve the accuracy of the data, but has no responsibility for the data. We strongly recommend verifying the validity of the data with the material manufacturers before making a final decision.

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