EPUSIL EP 980, EP 981, EP 982
Semi-flexible Epoxy Compounds with
Superior Thermal Shock Resistance
DESCRIPTION
Epusil EP 980, EP 981 and EP 982 are a “family” of
semi-flexible epoxy compounds displaying superior
thermal shock resistance and excellent electrical
properties over a wide range of temperatures. They
represent a class of “new breed” epoxy resins
technology based on cycloaliphatic chemistry.
PROPERTIES - UNCURED
EP 980
EP 981
EP 982
Color,
visual............................…….... Clear
Amber Black Black
Viscosity (cps, @250 C) ………………
4,000 40,000
Thixotropic
Specific Gravity (grm/cm3 @250
C)…… 1.1
1.45 1.47
Mix Ratio (weight).....................……....
100:85 1:1
1:1
(volume) ………………….... 1:1
PROPERTIES - CURED
Physical
Hardness,
Shore D ……………………. 60
65 65
Thermal Shock:
MIL-STD-202F,
Method 107E, Test A-1 Passes
MIL-STD-202F, Method 107E, Test
B-1
Passes Passes
Electrical
Dielectric
Strength, (volts/mil) …………
400 425 425
Dielectric Constant, (60 Hz. @ 200C) …...
4 4.4 4.4
Dissipation Factor, (60 Hz. @ 200C)
….. 0.01 0.03 0.03
Volume Resistivity, (ohm-cm) ………….. 1015
min. 1015 min. 1015
min.
Thermal Conductivity W/m0C……….……
0.21 0.40 0.41
MIXING INSTRUCTION
1.
Pre-heat both Parts A and B to 500C – 600C
and mix well before using
2.
Weigh out required amount of Part A and measure into
it the calculated amount of Part B. Mix thoroughly.
3.
Evacuate for 10 minutes @ 5-10 mm. Hg. (Usually
unnecessary with EP 981).
4.
Pour into mold or cavity.
CURE SCHEDULE
From 2 hours at 1250C to 24 hours at 700C.
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