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EPUSIL U 238
Low viscosity,
fast cure, casting urethane compound
DESCRIPTION
Epusil U 238 is a unique, low viscosity, two
components fast curing polyurethane casting
compound. The cured compounds perform high physical
and electrical properties even at elevated
temperatures.
PROPERTIES - Uncured
PART A
PART B
Viscosity, cps @ 250C
......................
4.500 100-150
Specific Gravity g/cm3
......................
1.35 1.22
Mix Ratio (weight)
............................
100:25
Mixed Viscosity
................................
3.000
Gel Time @ 250C, min
...................… 20 to
25
De-mold Time 250C, hr
...................... 2
to 3
Ultimate Cure 250C days
.................… 6 to 7
Shelf Life 250C, months
..................…
12 12
PROPERTIES - Cured
Hardness, Shore D
..............................
63-67
Tensile Strength kg/cm2
................….. 215
Tensile Elongation %
..........................
23-27
Compressive Strength kg/cm2
..........… 400
Water Absorption %
...........................
0.3
Working temperature 0C
.................... 100
ELECTRICAL
Dielectric Strength kV/mm
.................. 18
Dielectric Constant
..............................
5.2
Dissipation Factor
...............................
0.030
Volume Resistivity, Ohm*cm
............. 3*1014
Thermal Conductivity, W/ m0C
........… 0.4
MIXING INSTRUCTION
1.
Pre mix Epusil U 238 in the original container.
2.
Weigh out the required amount of part A.
3.
Weigh into 100 parts of Part A 25 parts of Part B.
4.
Mix thoroughly scraping both sides and bottom of the
mixing container.
5.
Pour into mold.
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