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RBC-4800 Technical Data Sheet

Type:  Electronics  
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RBC #4800 is a medium viscosity, filled casting resin offering low shrinkage and good machinability. It can be cured at room temperature or elevated temperatures depending upon the hardener selected and the properties required. The resin itself can be warmed slightly before the addition of hardener to facilitate mixing and flowability. With proper hardener selection, #4800 Resin can be used for very large as well as very small, intricate castings where good flowability and excellent air release are required.
Mixed Viscosity @ 25oC,cps                                                                              50,000
Shelf Life, (closed Container @ 25oC)                                                                12 Months
Color                                                                                                                Grey
Specific Gravity @ 25oC                                                                                    1.60
Hardness, Shore D                                                                                            90
Linear Shrinkage, in./in.                                                                                     0.002
Moisture Absorption 10 Days @ 25oC, %                                                            0.20
Izod Impact Strength, ft. lbs./in. of notch                                                              0.40
Tensile Strength @ 25oC, psi                                                                              10,200
Compressive Strength @ 25oC, psi                                                                     25,000
Thermal Conductivity, cal/sec/cm2/oC/cm X 10-4                                                   20.0
Thermal Stability, 1000 Hrs. @ 175oC, % Wt. Loss                                               0.50
Coefficient of Thermal Expansion, in./in./oC X 10-6                                               27.0
Heat Distortion temperature, oC                                                                          165
Operating Temperature Range, oC                                                                      -65 to 165
Volume Resistivity @ 25oC, ohm-cm                                                                  4x1014
Dielectric Strength, volts/mil                                                                              475
Dielectric Constant @ 25oC, 100 KC                                                                 3.90
Dissipation Factor @ 25oC, 100 KC                                                                   0.018
MIXING INSTRUCTIONS: Weigh the desired amount of #4800 Resin into a clean container and combine with AB-530 Hardener in one of the ratios shown below. Mix thoroughly for a minimum of three minutes by hand, or one minute by machine.
Rigid, Heat Resistance                          100 parts RBC #4800
                                                             20 parts Hardener AB-530
Semi-Flexible, Impact and                      100 parts RBC #4800
Shock Resistant                                     30 parts Hardener AB-530
Flexible, Excellent Peel                          100 parts RBC #4800
Strength                                                 40 parts Hardener AB-530
RECOMMENDED CURE STRENGTH: Pot life ranges from 1 - 2 hours depending on batch size and hardener ratio. Cure for 72 hours at room temperature (25oC) or 2 hours at 65oC. For optimum properties, cure 1 hour at 65oC followed by 1 hour at 120oC.

RBC Industries, Inc
80 Cypress Street
Warwick, RI 02888
T:  888-RBC-EPOXY    |    888-(722-3769)    |    401-941-3000
F:  401-941-0150