RBC-3600 Resin

Electronics
, Potting & Encapsulating
4 hours
Pot Life
1,300
Mixed Viscosity (cps)
80
Hardness (Shore D)
-55 to 140
Operating Temperature Range (°C)

RBC-3600 is a low-viscosity, low density, filled epoxy potting resin (epoxy potting compound) used where lightweight castings are necessary without the loss of acceptable physical and electrical properties. RBC-3600 possesses excellent air release and good flowability producing void-free castings. It is especially useful in the aerospace and automotive industries where increased emphasis is placed on high performance from lightweight components.

HANDLING PROPERTIES:

Mixed Viscosity @ 25oC, cps: 1,300
Shelf Life, (closed Container @ 25oC): 12 months

PHYSICAL PROPERTIES (CURED):

Color: Black
Specific Gravity @ 25oC: 0.80
Hardness, Shore D: 80
Linear Shrinkage, in./in.: 0.004
Moisture Absorption 10 Days @ 25oC, %: 0.21
Izod Impact Strength, ft. lbs./in. of notch: 0.24
Tensile Strength @ 25oC, psi: 3,800
Compressive Strength @ 25oC, psi: 11,000

THERMAL PROPERTIES (CURED):

Thermal Conductivity, cal/sec/cm2/oC/cm X 10-4: 3.5

Thermal Stability, 1000 Hrs. @ 175oC, % Wt. Loss: 0.50

Coefficient of Thermal Expansion, in./in./oC X 10-6: 40

Heat Distortion Temperature, oC: 130

Operating Temperature Range, oC: -55 to 140

ELECTRICAL PROPERTIES (CURED):

Volume Resistivity @ 25oC, ohm-cm: 7×1015
Dielectric Strength, volts/mil: 450
Dielectric Constant @ 25oC, 100 KC: 2.80
Dissipation Factor @ 25oC, 100 KC: 0.004

(Note: The above properties are typical of a system cured with hardener #AB-312.) 

RECOMMENDED HARDENERS:

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.

MIXING INSTRUCTIONS:

Weigh the desired amount of #3600 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
Pot Life 
100 grams @ 25oC
A-110 11.2 45-50 minutes
A-120 24 60-65 minutes
AB-312 26 3-4 hours

RECOMMENDED CURE SCHEDULE

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