EPUSIL EP 136
General
Purpose Epoxy Casting Compound
DESCRIPTION
Epusil EP 136 is an easy to use epoxy
potting/casting compound displaying excellent
adhesion to metals, ceramics and most plastics. When
properly cured with Epcure 11, it conforms to the
requirements of Mil-I-16923, Types B, C & D.
PROPERTIES - UNCURED
EP 136
EPC 9 EPC 11
EPC 123
Color,
visual.............................……….
Black Amber
Brown Light amber
Viscosity,
ASTM-D-2393(c.p.s @ 250).
25000-32000 300
700 250
Specific Gravity
(gr./cm3)……………...
1.6+/-0.1 0.98
1.1 0.98
Mix Ratio (weight)
...............................
100:7 100:8.5 100:15
Mix Viscosity,
ASTM-D-2393 (cps @ 250).
9000+/-900 10000+/-1000 3000+/-500
Pot Life @ 250
C (100
gr.)..……….......
30 minutes 5 hours 2 hours
Shelf Life @ 25
0C (months)
…..........… 12 min
12 min 12 min
12 min
PROPERTIES - CURED
PHYSICAL
Hardness,
ASTM-D-2240 (Durometer)…………………… Shore D
85 Shore D 87 Shore D 80
Tensile
Strength, ASTM D-638 (psi)……………………..
6000+/-500 6500+/-500 7500+/-500
Tensile
Elongation, ASTM D-638 ……………….………. 2
% 3 % 8.5%
Compressive
Strength, ASTM D-695 (psi)…………….…
15000 15000 12000
Flexural
Strength, ASTM-D-790 (psi)…………………… 10000
11000 15000
Coefficient of
Thermal Expansion (cm/cm/0C)...………….
45 * 10-6 48 * 10-6
45 * 10-6
Working Temperature
range (0C).......................…………
-40-130 -40 –150 -40-110
ELECTRICAL
Dielectric Strength,
ASTM D-149 (volts/mil) …………….
440 450 440
Dielectric Constant,
ASTM -D- 150 ………………………
4.6 4.6 4.6
Dissipation Factor,
ASTM -D- 150 ………………………
0.02 0.02 0.02
Volume Resistivity,
ASTM -D- 257 (ohm-cm) ………….. 5 * 1016
5 * 1016 5 * 1016
Thermal
Conductivity, W/ m 0C
………………………… 0.5
0.5 0.5
MIXING INSTRUCTION
1.
Stir Epusil 136 thoroughly in its original container
until uniform and any settled filler is
completely re-incorporated.
2.
Weigh out required amount of Epusil EP 136 and weigh
into it 7 parts of EPC 9 per 100 parts
Epusil EP 136 or 8.5 parts of EPC 11 per 100 parts
Epusil EP 136 or 15 parts of EPC 123 per 100 parts
of EP 136.
3.
Mix curing agent in thoroughly, scraping sides and
bottom of the mixing container.
4.
De-air (if necessary) at 0.5 cm. Hg. For 10 minutes.
5.
Pour into mold, module or cavity.
CURE SCHDULE
EPC 9 and EPC 123– overnight at room temperature. It is
also recommended to post cure it at 70 to 800C
for 3 hrs.
EPC 11 – is a heat cure agent. Therefore the
necessary process is: 2 to 3 hours at 60 to 800,
2 to 3 hrs. at 1000C and 2-3 hours at 1500C;
or 12-16 hours at 60 -700C
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