EPUSIL EP - 142
Low viscosity Thermal
Resistively Epoxy Potting/Casting Compound
DESCRIPTION
Epusil EP-142 is a
low viscosity, two components, potting and casting
compound, which in addition to having excellent
electrical properties has unusually high thermal
resistance
PROPERTIES - UNCURED
EP 142
EPC 142
Color,
visual
............................................
Black Amber
Viscosity, ASTM-D-2393 (cps @ 250.C)..
21000 350
Specific Gravity gr./cm3
...........................
1.51 1.06
Mix
Ratio (weight)
...................................
100:10
Mixed
Viscosity, ASTM-D-2393 (cps @ 250C)
16000
Pot
Life 100 dr. @ 250.C, min..............
.... 45-60
Shelf
Life @ 250.C, months
......................
12 12
PROPERTIES – CURED
Hardness, ASTM-D-2240 (Durometer).....
86-90 Shore D
Tensile Strength, ASTM-D-638
...............
5400 psi
Tensile Elongation, ASTM-D-638
...........
4
%
Compressive Strength, ASTM-D-695
..... 15000
psi
Coefficient of Thermal Expansion
...........
4.1*10-5 1/K
Operating Temperature
............................
1550 C
Shrinkage
................................................
0.4
%
ELECTRICAL
Dielectric strength, ASTM-D149 (kV/mm) ...…
16
Dielectric Constant, ASTM-D-150
...................
4.4
Dissipation Factor, ASTM -D-150 (60
Hz)...… 0.012
Volume
Resistivity, ASTM -D-257 .............
… 2.0*1015
Ohm/cm
Thermal Conductivity, (W/m0C)......…………..
0.75
MIXING INSTRUCTIONS
1.
Stir Epusil EP 142 in its original container until
uniform.
2.
Weigh out required amount of Epusil EP 142.
3.
Weigh into 100 parts of Epusil EP 142 10 parts of
Epcure EPC 142.
4.
Mix thoroughly, being careful to scrape sides and
bottom of container to ensure proper blending.
5.
De-air (if necessary) at 0.5 cm.Hg. for 10 minutes.
6.
Pour into cavity or mold.
CURE SCHEDULE
De-molding time at room temperature is about 5-6
hours. Post curing of 1 hour at 800C and
4 hours at 1300 C will complete the
properties development.
Otherwise, a period of 30 days is needed to receive
the full properties.
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