RBC-3810 epoxy system is a filled, medium viscosity, semi-flexible version of epoxy resin RBC-3800. It exhibits less shrinkage than the RBC-3800 and physical properties are better and thermal conductivity is increased. Like RBC-3800, it is an epoxy system mainly used as for epoxy potting and encapsulating and/or insulating a variety of electronic components. The RBC-3810 epoxy system is also available in a pigmented version to insure a proper mix.
Mixed Viscosity @ 25oC, cps: 10,000
Shelf Life, (closed Container @ 25oC): 12 months
Color: Cream
Specific Gravity @ 25oC: 1.42
Hardness, Shore D: 65
Linear Shrinkage, in./in.: 0.004
Moisture Absorption 10 Days @ 25oC, %: 0.48
Izod Impact Strength, ft. lbs./in. of notch: 1.55
Tensile Strength @ 25oC, psi: 2,500
Compressive Strength @ 25oC, psi: 4,200
Thermal Conductivity, cal/sec/cm2/oC/cm X 10-4: 8.7
Thermal Stability, 1000 Hrs. @ 175oC, % Wt. Loss: 1.30
Coefficient of Thermal Expansion, in./in./oC X 10-6: 55
Heat Distortion Temperature, oC: 40
Operating Temperature Range, oC: -65 to 130
Volume Resistivity @ 25oC, ohm-cm: 8×1015
Dielectric Strength, volts/mil: 450
Dielectric Constant @ 25oC, 100 KC: 4.80
Dissipation Factor @ 25oC, 100 KC: 0.0016
Weigh the desired amount of #3810 Epoxy Resin into a clean container and combine with recommended amount of #3810 Epoxy Hardener. Mix thoroughly. Entrapped air may be removed by vacuum.
| Mix Ratio by Weight | 100 parts resin to 165 parts hardener | |
| Pot Life | @ 25oC | 3 weeks |
| @ 65oC | 12 hours | |
| @ 100oC | 30 minutes |
| Cure Time | @ 75oC | 15-20 hours |
| @ 95oC | 6-8 hours | |
| @ 120oC | 2-3 hours |
