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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:
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| Mix Ratio by weight: |
100 parts resin to 165 parts hardener
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| Pot Life |
@ 25oC |
3 WEEKS |
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@ 65oC |
12 HRS. |
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@ 100oC |
30 MINS. |
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| Cure Time |
@ 60oC |
24 HRS. |
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@ 100oC |
2-3 HRS. |
ASSOCIATED PUBLICATIONS:
RBC-3700 Epoxy Resin Material Safety Data Sheet (MSDS)
RBC-3700 Epoxy Hardener Material Safety Data Sheet (MSDS)
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