Encapsulating Resin can cure with several agents.
Press Release Summary:
Electronic grade, casting, potting, and encapsulating epoxy resin system No. 20-365140 adheres to metals, ceramics, and plastics. Physical properties include mixed viscosity of 32,500 cps at 25°C, specific gravity from 1.40 to 1.45 at 25°C, and Shore D Hardness rating of 85 to 88. Tensile Strength ranges from 6,100 to 9,200 psi, and operating temp ranges from -40 to +30 and -65 to +105°C.
Original Press Release:
20-365140 Epoxy Resin
DESCRIPTION:
20-365140 is a filled epoxy casting, potting, and encapsulating resin system. This is a lower viscosity version of the 20-3651. This system exhibits excellent physical, thermal, and electrical insulation properties. 20-365140 is easily machined and exhibits outstanding adhesion to metals, ceramics, and plastics. The Flame Retardant version is 20-365140 FR.
When cured with Catalyst #105, this versatile epoxy system meets the requirements of MIL-I-16923 for Types B, C, and D.
TYPICAL SPECIFICATIONS:
CAT.190 CAT.105 CAT.145
Viscosity Resin, 25°C cps 32,500 --- --- ---
Mixed Viscosity, 25°C cps 10,000 4,000 2,000
Specific Gravity, 25°C/25°C, mixed 1.44 1.45 1.40
Hardness, Shore D 88 88 85
Cure Shrinkage,inin .0015 .0015 .0015
Tensile Strength, psi 6,100 9,200 6,300
Compressive Strength, psi 19,300 15,500 17,500
Operating Temp. Range, °C -40 to +30 -55 to +155 -65 to +105
Dielectric Strength, Volts/Mil 450 450 450
Dielectric Constant at 1 MHZ 3.9 3.8 3.8
Volume Resistivity, OHM-CM >1E-15 >1E-14 >1E-14
Dissipation Factor, 1MHZ .06 .02 .07
Water Absorption, %(24Hr.) 0.3 0.1 0.3
Thermal Conductivity, BTU/hr/ft²/°F/in. 4.6 4.6 4.6
Thermal Expansion Coefficient, 1°C 48E-06 45E-06 60.5E-06
Flexural Strength, psi 12,000 14,000 10,000
Outgassing
%TML 0.31 0.55 ---
%CVCM 0.03 0.01 ---
INSTRUCTIONS FOR USE:
A. ROOM TEMPERATURE CURING WITH CATALYST 190:
Catalyst 190 is designed for applications requiring a room temperature curing system with excellent physical and electrical insulation properties.
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