EPUSIL EP - 147
Very high thermal conductivity epoxy compound
DESCRIPTION
Epusil EP-147 IS an
epoxy casting system giving extremely high thermal
conductivity. Several hardeners can be used to cure
EPUSIL EP 147. However, where thermal conductivity
is critical, the hardeners with low ratios should be
used to prevent deterioration and retention of
properties.
PROPERTIES - UNCURED
EP-147
EPC 9 EPC 11
Color,
visual........................................
Black
Clear Amber
Viscosity, ASTM-D-2393(cps@250C).
60-80000
300 700
Specific Gravity, gr./cm3
................….
2.36 0.98 1.13
Mix Ratio
..........................................
100:4.0-4.2 100:4.6-5
Mixed Viscosity, ASTM-D-2393
......
25.000 25.000
Pot Life @ 250C
...............................
1-2 hrs 6-8 hrs
Shelf Life @ 250C
............................
12 months
minimum
PROPERTIES - CURED
Physical
Hardness,
ASTM-D-2240 (Durometer) Shore D....
88 92
Tensile
Strength, ASTM D-638 (kg/cm2)…………
570-600 600-630
Tensile
Elongation, ASTM-D-638,(%) ……………
1 1
Compressive
Strength, ASTM-D-695 kg/cm2
……. 1100+/-200 1100+/-200
Coefficient of Thermal Expansion (cm/cm/0C)…….. 20*10-6
20*10-6
Heat Distortion Point
ELECTRICAL
Dielectric
strength, ASTM-D-149 (volts/mil)...
410 420
Dielectric Constant, ASTM-D-150..................
4.9 5.0
Dissipation Factor, ASTM-D-150....................
0.015 0.010
Volume Resistivity, ASTM-D-257 (ohm-cm)...
1.2*1015
1.0*1015
Thermal Conductivity W/m0 C.
………………
2.1 2.1
MIXING INSTRUCTIONS
1.
Pre-heat Epusil EP-147 to 500C to 600C
to enhance flow and air release.
2.
Stir contests thoroughly until all filler is
dispersed.
3.
Measure out required amount of Epusil EP-147. Weigh
into it 4 parts of Epcure 9 per 100 parts Epusil
EP-147, or 4.5-5.5 parts Epcure 11 per 100 parts
Epusil EP-147.
4.
Mix thoroughly being sure to scrape sides and bottom
of mixing container.
5.
Where void- free castings or coatings are required,
de-gas for 2-5 minutes at 1/2 to
1cm.Hg.
6.
Pour into mold or device.
CURE SCHEDULE
Epcure 9 - Room Temperature cure (12-16 hours).
Hard, rigid system results
Epcure 11- Gel condition
Fast cure - 1200C for 1 hour.
Small mass - 800C for 2-3 hours. and then
1200C for 2 hours
Large mass (greater than 5 lbs.)- 550C
for 5-6 hours and then 1200C for 2 hours
Post cure - 1500C to 1800C for
4 hours (necessary for service
temperature
above 1500C)
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