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
Color, visual................................
Viscosity @ 250. C (cps)............
Specific Gravity gr./cm3..........….
Mix Ratio (by weight)..............…
Mix Viscosity, cps.......................
Pot Life @ 250 C (100 gr.)..........
Gel Time @ 250 C (100 gr.)........
190min
Shelf Life @ 250 .........................
EP 333
Black
5000-7000
1.48-1.52
EPC 9
Clear
120-150
0.98+/-0.02
100:5-6
4000-6-5000
20-25 min
35-45 min
EPC 11
Brown
120-150
0.98+/-0.02
7-8
5000-6000
5-7 hrs.
12-15 hrs.
EPC 333
clear
100-120
0.98+/-0.2
10.5-10.7
3200-4200
60-90 min
150
12 months
12 months
12 months
12 months
PROPERTIES - CURED
PHYSICAL
Hardness, ASTM-D-2240 (Shore D)
Tensile Strength, ASTM D-638 kg/cm2
Tensile Elongation, ASTM D-638 …..
Compressive Strength, ASTM D-695 kg/cm2.
Coefficient of linear Expansion.……..
Heat Distortion point.........................
Flammability acc. to UL 94 standard
D 80-85
D 85-90
73-79
680-700
700-730
680-700
1.75 %
1.5 %
3.5-4%
1050
1100
1050
-6 0
------------ --- 35-45*10 1 K ---------900C
1300C
900C
V-0
V-0
V-0
ELECTRICALּ
Dielectric Strength, ASTM D-149 kV/mm...
Dielectric Constant, ASTM -D- 150 ………
Dissipation Factor, ASTM -D- 150 ………
Volume Resistivity, ASTM -D- 257 ……..
Thermal Conductivity, W/m0C …………....
18
4.4
0.02
-------------------------------------
20
18
4.5
4.4
0.02
0.02
1015 Ohm/cm-----------0.8 ------------------------
Epusil EP 333
Page 2
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
April 2003