RBC-3412 is a filled, thixotropic, general purpose dip coating epoxy resin. Its’ physical and electrical properties are similar to #3300 Resin, but #3412 is can be used for dipping and coating transformers, coils, capacitors, etc. RBC-3412 can be cured at room temperature or elevated temperatures, depending upon the hardener selected and the heat resistance of the part.
Mixed Viscosity @ 25oC, cps: Thixotropic
Shelf Life, (closed Container @ 25oC): 12 months
Specific Gravity @ 25oC: 1.45
Hardness, Shore D: 85
Linear Shrinkage, in./in.: 0.003
Moisture Absorption 10 Days @ 25oC, %: 0.29
Izod Impact Strength, ft. lbs./in. of notch: 0.29
Tensile Strength @ 25oC, psi: 6,060
Compressive Strength @ 25oC, psi: 17,300
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: 39
Heat Distortion Temperature, oC: 130
Operating Temperature Range, oC: -55 to 155
Volume Resistivity @ 25oC, ohm-cm: 8x1016
Dielectric Strength, volts/mil: 475
Dielectric Constant @ 25oC, 100 KC: 4.1
Dissipation Factor @ 25oC, 100 KC: 0.022
(Note: The above properties are typical of a system cured with hardener #AB-312.)
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.
Weigh the desired amount of #3412 Resin into a clean container and combine with recommended hardener in one of the ratios shown below.
|Hardener||Parts by Weight
per 100 pts. Resin
100 grams @ 25oC
|Hardener||Cure @ 25oC||Cure @ 65oC||Cure @ 100oC||Cure @ 130oC|
|A-110||24 hours||2 hours||---||---|
|A-120||24 hours||2 hours||---||---|
|AB-312||---||6 hours||3 hours||2 hours|