UL Rated Flame Retardant Thermally Conductive

These UL rated thermally conductive Compounds are pourable, room temperature cure, epoxy resin systems. They are ideally suited for meter mix dispensing and designed for medium voltage devices such as transformers, electronic modules, and coil. They can also be used for many other general purposes of potting and encapsulating applications.

PRODUCT		EP-207	EP-204		EP-234
Mix ratio by weight (PART-A/PART-B)		100/96.5	100/7		100/29.5
Mix ratio by Volume (PART-A/PART-B)		100/100	100/15		100/50
Mixed Viscosity @ 25°C	cps	9000-13,000	9000-13,000		1200-1700
Pot life @ 25°C (100 grams)	minutes	100-140	180		20-30
Recommended Cure		7 days @ 25°C	24 hrs @ 25°C		7 days @ 25°C
Alternate Cure		2 hrs @ 66°C	1 hr @ 66°C		2 hrs @ 66°C
TYPICAL CURED PROPERTIES:
Color		Black		Black	Blue-Green
Specific Gravity		1.52	1.95		1.42
Hardness	Shore D	75	85		75
Thermal Conductivity	Cal-cm/sec-cm²-°C	-	23 X 10^-4		90 X 10^-4
Water Absorption (weight gain) (168 hrs. immersion @ 25°C)	%	0.31	0.4		0.23
Linear Shrinkage	in/in	0.0035	0.001		0.0035
Tensile Strength	psi	2700	7000		1550
Tensile Modulus	psi	-	-		205,000
Elongation @ Break	%	-	-		8.5
Heat Distortion Temperature (HDT)	°C	-	45		33
Coefficient of Thermal Expansion (30°C to 90°C)	/°C	-	104 x 10^-6		90 x 10^-4
UL Flame Retardancy Test		Pass - 94 VO @ 0.25” thickness	Pass - 94 VO @ 0.25” thickness		Pass - 94 HB @ 0.25” thickness
Dielectric Strength (3mm thickness)	Volt/mil	415	475		415
Dielectric Constant	@ 100 kHz	3.7	4.8		3.68
Dissipation Factor	@ 100 kHz	0.014	0.015		0.035
Volume Resistivity	Ohm-cm	3.2x10¹⁴	2x10¹⁵		3.2x10¹⁴

DISCLAIMER: All data given here is offered as a guide to the use of these materials and not as a guarantee of their performance. The user should evaluate their suitability for own purposes. Properties are typical and should not be used in preparing specifications. Statements are not to be construed as recommendations to infringe any patent.