RBC-3700 System is a semi-flexible, unfilled epoxy system, most often used as an epoxy potting compound. RBC-3700 offers excellent shock resistance and electrical properties and its low viscosity and long pot life lend to its excellent handling properties. RBC-3700 is an elevated cure system which makes it an excellent impregnating, potting and encapsulating system for transformers, coils, and other components requiring excellent physical shock resistance. | HANDLING PROPERTIES: | Mixed Viscosity @ 25oC, cps
Shelf Life, (closed Container @ 25oC) | 4,500
12 months | | PHYSICAL PROPERTIES (CURED): | Color
Specific Gravity @ 25oC
Hardness, Shore D
Linear Shrinkage, in./in.
Moisture Absorption 10 Days @ 25oC, %
Izod Impact Strength, ft. lbs./in. of notch
Tensile Strength @ 25oC, psi
Compressive Strength @ 25oC, psi | Translucent
1.07
60
0.010
0.50
1.24
7,000
13,000 | | THERMAL PROPERTIES (CURED): | Thermal Conductivity, cal/sec/cm2/oC/cm X 10-4
Thermal Stability, 1000 Hrs. @ 175oC, % Wt. Loss
Coefficient of Thermal Expansion, in./in./oC X 10-6
Heat Distortion Temperature, oC
Operating Temperature Range, oC | 5.8
0.40
55
40
-65 to 155 | | ELECTRICAL PROPERTIES (CURED): | Volume Resistivity @ 25oC, ohm-cm
Dielectric Strength, volts/mil
Dielectric Constant @ 25oC, 100 KC
Dissipation Factor @ 25oC, 100 KC | 6x1016
475
4.10
0.008 |
MIXING INSTRUCTIONS:
Weigh the desired amount of #3700 epoxy resin into a clean container and combine with recommended amount of #3700 epoxy hardener. Mix thoroughly. Entrapped air may be removed by vacuum.
RECOMMENDED CURE SCHEDULE:
| | | | | Mix Ratio by weight: | 100 parts resin to 165 parts hardener | | Pot Life | @ 25oC | 3 WEEKS | | | @ 65oC | 12 HRS. | | | @ 100oC | 30 MINS. | |
| | Cure Time | @ 60oC | 24 HRS. | | | @ 100oC | 2-3 HRS. |
ASSOCIATED PUBLICATIONS:
RBC-3700 Epoxy Resin Material Safety Data Sheet (MSDS) RBC-3700 Epoxy Hardener Material Safety Data Sheet (MSDS) |
