RBC-4200 Technical Data Sheet

Type:

Electronics

RBC-4200 epoxy resin is a fire retardant version of the highly filled RBC-4100 thermally conductive epoxy resin. It is designed for applications where thermal conductivity, excellent electrical insulation, high heat distortion and low shrinkage are required. This epoxy resin offers excellent resistance to filler settling during storage and may be heated to 140^oF to reduce vistocisty prior to adding epoxy hardener catalyst. RBC-4200 can be cured at room temperature or elevated temperatures to fit a variety of applications. Being a thermally conductive epoxy, it can be used as a heat sink for large casting or as an epoxy potting compound or encapsulant for heat generating components.

HANDLING PROPERTIES:
Mixed Viscosity @ 25^oC, cps Shelf Life, (closed Container @ 25^oC)	9,000 12 months
PHYSICAL PROPERTIES (CURED):
Color Specific Gravity @ 25^oC Hardness, Shore D Linear Shrinkage, in./in. Moisture Absorption 10 Days @ 25^oC, % Izod Impact Strength, ft. lbs./in. of notch Tensile Strength @ 25^oC, psi Compressive Strength @ 25^oC, psi	Black 1.60 90 0.003 0.18 0.29 10,000 25,500
THERMAL PROPERTIES (CURED):
Thermal Conductivity, cal/sec/cm2/^oC/cm X 10^-4 Thermal Stability, 1000 Hrs. @ 175^oC, % Wt. Loss Coefficient of Thermal Expansion, in./in./^oC X 10^-6 Heat Distortion Temperature, ^oC Operating Temperature Range, ^oC	30 0.35 27 155 -65 to 155
ELECTRICAL PROPERTIES (CURED):
Volume Resistivity @ 25^oC, ohm-cm Dielectric Strength, volts/mil Dielectric Constant @ 25^oC, 100 KC Dissipation Factor @ 25^oC, 100 KC	6x10¹⁶ 480 5.7 0.018

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

RECOMMENDED HARDENERS:
A-110: A rigid, room temperature curing system with limited pot life and fast cure.
A-115: 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 RBC-4200 epoxy resin into a clean container and combine with recommended epoxy hardener in one of the ratios shown below.

Hardener	Parts by wt.	Pot Life
	per 100 pts. resin	100 grms. @ 25^oC
A-110	5.7	2 hrs.
A-115	6.0	3 hrs.
AB-312	11.0	5 hrs.

RECOMMENDED CURE SCHEDULE:
Hardener	Cure @ 25^oC	Cure @ 65^oC	Cure @ 100^oC	Cure @ 130^oC
A-110	24 HRS.	2 HRS.	-	-
A-122	24 HRS.	2 HRS.	-	-
AB-312	-	6 HRS.	5 HRS.	3 HRS.

ASSOCIATED PUBLICATIONS:
RBC-4200 Epoxy Resin Material Safety Data Sheet (MSDS)

A-110 Epoxy Hardener Material Safety Data Sheet (MSDS)

A-115 Epoxy Hardener Material Safety Data Sheet (MSDS)

AB-312 Epoxy Hardener Material Safety Data Sheet (MSDS)


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