Decorative Electronics Industrial Hallemite Flooring and Construction

RBC-4503 Technical Data Sheet

Type:  Electronics  
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RBC-4503 is a low viscosity, UL listed epoxy for 94 V-O flame retardency. It is designed for applications where thermal conductivity, excellent electrical insulation, high heat distortion and superior thermal shock properties are required. RBC-4503 can be cured at room temperature or elevated temperature to fit a variety of applications. It can be used as a heat sink for large castings or as an encapsulant for heat generating components.
 
HANDLING PROPERTIES:
Mixed Viscosity @ 25oC,cps                                                                              3,300
Mixed Viscosity @ 60oC,cps                                                                              700
Shelf Life, (closed Container @ 25oC)                                                                12 Months
 
PHYSICAL PROPERTIES (CURED):
Color                                                                                                                Black
Specific Gravity @ 25oC                                                                                    1.48
Hardness, Shore D                                                                                            87
Linear Shrinkage, in./in.                                                                                     0.003
Moisture Absorption 24 hr. water boil, %                                                              3.8
Izod Impact Strength, ft. lbs./in. of notch                                                              0.28
Tensile Strength @ 25oC, psi                                                                              8,100
Compressive Strength @ 25oC, psi                                                                     19,100
 
THERMAL PROPERTIES (CURED):
Thermal Conductivity, cal/sec/cm2/oC/cm X 10-4                                                   27.3
Thermal Stability, 1000 Hrs. @ 175oC, % Wt. Loss                                              0.35
Coefficient of Thermal Expansion, in./in./oC X 10-6                                               27
Heat Distortion Temperature, oC                                                                         53
Operating Temperature Range, oC                                                                     -65 to 130
 
ELECTRICAL PROPERTIES (CURED):
Volume Resistivity @ 25oC, ohm-cm                                                                  5x1016
Dielectric Strength, volts/mil                                                                              480
Dielectric Constant @ 25oC, 100 KC                                                                 5.7
Dissipation Factor @ 25oC, 100 KC                                                                  0.018
 
The above properties are typical of a system cured with Hardener A-122
 
RECOMMENDED HARDENERS:
 
AB-56        A fast, room temperature curing system with good chemical and thermal properties.
 
A-122        A resilient, low viscosity system with slightly longer pot life, that exhibits excellent
                 resistance to thermal shock.
 
 
MIXING INSTRUCTIONS: Weigh the desired amount of RBC-4503 into a clean container and combine with recommended hardener in the proper ratio as shown below.
 
Hardener    Parts by wt.                        Pot Life
                per 100 pts. resin          100 grms. @ 25oC.
AB-56            20.0                                 15-30 Minutes
A-122             13.0                                 3 Hours
                                               
                                             
RECOMMENDED CURE SCHEDULE:
           
HARDENER      CURE@25OC     CURE@65OC            CURE@100OC        CURE@130OC
AB-56                     6 Hrs.              10 Min.                           ---                           ---                           
A-122                   24 Hrs.              3 Hrs.                         2 Hrs.                     1 Hr.
                       
 
 
 
 
 
 
 

 
rbchallemiteamp
RBC Industries, Inc
80 Cypress Street
Warwick, RI 02888
USA
T:  888-RBC-EPOXY    |    888-(722-3769)    |    401-941-3000
F:  401-941-0150
E:  support@rbcepoxy.com