RBC-3300 is a filled, medium-viscosity, general-purpose epoxy potting compound and epoxy casting resin which offers low shrinkage, good air release, and excellent physical and electrical properties. It can be cured at room temperature or at elevated temperatures depending upon the epoxy hardener selected and the heat resistance of the part.
Mixed Viscosity @ 25oC, cps: 3,600
Shelf Life, (closed Container @ 25oC): 12 months
Color: Black
Specific Gravity @ 25oC: 1.50
Hardness, Shore D: 90
Linear Shrinkage, in./in.: 0.19
Moisture Absorption 10 Days @ 25oC, %: 0.29
Izod Impact Strength, ft. lbs./in. of notch: 0.28
Tensile Strength @ 25oC, psi: 5,800
Compressive Strength @ 25oC, psi: 25,200
Thermal Conductivity, cal/sec/cm2/oC/cm X 10-4: 7.8
Thermal Stability, 1000 Hrs. @ 175oC, % Wt. Loss: 0.50
Coefficient of Thermal Expansion, in./in./oC X 10-6: 36
Heat Distortion Temperature, oC: 145
Operating Temperature Range, oC: -55 to 155
Volume Resistivity @ 25oC, ohm-cm: 8×1016
Dielectric Strength, volts/mil: 475
Dielectric Constant @ 25oC, 100 KC: 4.0
Dissipation Factor @ 25oC, 100 KC: 0.022
(Note: The above properties are typical of a system cured with hardener #AB-312.)
Weigh the desired amount of #3300 Resin into a clean container and combine with recommended hardener in one of the ratios shown below.
A-110: A rigid, room temperature curing system with limited pot life and fast cure.
A-120: A resilient, low viscosity system with slightly longer pot life, that exhibits excellent resistance to thermal shock.
AB-312: Good resistance to heat, chemicals, thermal and mechanical shock, and good electrical properties at high humidity.
| Hardener | Parts by Weight per 100 pts. Resin |
Pot Life 100 grams @ 25oC |
| A-110 | 7 | 71 hour |
| A-120 | 15 | 2 hours |
| AB-312 | 16 | 4 hours |
| Hardener | Cure @ 25oC | Cure @ 65oC | Cure @ 100oC | Cure @ 130oC |
| A-110 | 24 hours | 2 hours | — | — |
| A-12 | 24 hours | 2 hours | — | — |
| AB-312 | — | 6 hours | 3 hours | 2 hours |
