EPUSIL EP 333
Self-extinguishing Casting Compound Flame Class 94 V
- 0
DESCRIPTION
Epusil EP 333 is a mid viscosity,
self-extinguishing epoxy potting and casting
compound which conforms to Underwriters Laboratories
standard 94 flame class. It is used when high
physical and electrical properties are necessary and
where self-extinguishing properties are important.
PROPERTIES - UNCURED
EP 333
EPC 9 EPC 11
EPC 333
Color,
visual................................
Black Clear
Brown clear
Viscosity @ 250.
C (cps)............ 5000-7000
120-150 120-150 100-120
Specific Gravity
gr./cm3..........….
1.48-1.52 0.98+/-0.02
0.98+/-0.02 0.98+/-0.2
Mix Ratio (by
weight)..............…
100:5-6 7-8 10.5-10.7
Mix Viscosity,
cps.......................
4000-6-5000 5000-6000 3200-4200
Pot Life @ 250
C (100
gr.)..........
20-25 min 5-7 hrs. 60-90 min
Gel Time @ 250
C (100
gr.)........ 35-45
min 12-15 hrs. 150 190min
Shelf Life @ 250
......................... 12 months
12 months 12 months 12 months
PROPERTIES - CURED
PHYSICAL
Hardness,
ASTM-D-2240 (Shore D) D
80-85 D 85-90 73-79
Tensile
Strength, ASTM D-638 kg/cm2
680-700 700-730 680-700
Tensile Elongation,
ASTM D-638 ….. 1.75
% 1.5 % 3.5-4%
Compressive
Strength, ASTM D-695 kg/cm2.
1050 1100 1050
Coefficient of
linear Expansion.……..
------------ --- 35-45*10-6 10K
----------
Heat Distortion
point.........................
900C 1300C
900C
Flammability
acc. to UL 94 standard
V-0 V-0 V-0
ELECTRICALּ
Dielectric Strength,
ASTM D-149 kV/mm...
18 20 18
Dielectric Constant,
ASTM -D- 150 ………
4.4 4.5 4.4
Dissipation Factor,
ASTM -D- 150 ………
0.02 0.02 0.02
Volume Resistivity,
ASTM -D- 257 ……..
-----------------1015 Ohm/cm------------
Thermal
Conductivity, W/m0C …………....
------------------0.8 ------------------------
MIXING INSTRUCTION
1.
Mix the contents of EP 333 in its original
container.
2.
Weigh out required amount of Epusil EP 333
3.
Weigh into EP 333 appropriate curing agent in the
following mix ratio:
EPC 9 – 5 to 6 parts per 100 parts of EP 333
EPC 11 – 7 to 8 parts per 100 parts of EP 333
EPC 333 10.5- 10.7 parts per 100 parts of EP 333
4.
Mix thoroughly, being careful to scrap sides and
bottom of container to ensure
proper blending.
5.
Evacuate for
5
to 10 minuet if required.
6.
Pour into cavity or mold.
CURE SCHDULE
EPC 9 -
Cure 2 to 3 hours at room temperature or accelerated
cure times is possible
with higher temperature but only after first
degree of curing for small mass casting.
EPC 11
- Cure for 4 to 5 hours, then at 750C for
2 to 3 hours and post cure of 2 to 3
hours at 1300C. For large mass cure at
room temperature until it gels and
than post cure at 800C for 2 hrs, 100,
1300 C up to 1500Cfor 2 to 3
hours in accordance.
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