Epoxy Technology EPO-TEK® 731 Epoxy Adhesive

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Epoxy Technology EPO-TEK® 731 Epoxy Adhesive
Categories:	Polymer; Adhesive; Thermoset; Epoxy; Epoxy Adhesive
Material Notes:	Material Description: A two component, thixotropic, room temperature-curing epoxy adhesive. It is an electrically and thermally insulating epoxy designed for general applications in semiconductor packaging, electronics, medical, and optical industries. A higher viscosity version of EPO-TEK® 730. Information Provided by Epoxy Technology
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Physical Properties	Metric	English	Comments

Specific Gravity	0.970 g/cc	0.970 g/cc	Part A
	1.12 g/cc	1.12 g/cc	Part B
Particle Size	<= 20 µm	<= 20 µm
Viscosity	175000 - 275000 cP @Temperature 23.0 °C	175000 - 275000 cP @Temperature 73.4 °F	1 rpm

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	66	66
Tensile Modulus	1.36 GPa	197 ksi	Storage
Shear Strength	>= 13.8 MPa	>= 2000 psi	Lap
	>= 23.4 MPa	>= 3400 psi	Die

Electrical Properties	Metric	English	Comments
Volume Resistivity	<= 2.00e+13 ohm-cm	<= 2.00e+13 ohm-cm
Dielectric Constant	3.38 @Frequency 1000 Hz	3.38 @Frequency 1000 Hz
Dissipation Factor	0.028 @Frequency 1000 Hz	0.028 @Frequency 1000 Hz

Thermal Properties	Metric	English	Comments
CTE, linear	74.0 µm/m-°C	41.1 µin/in-°F	Below Tg
	168 µm/m-°C	93.3 µin/in-°F	Above Tg
Maximum Service Temperature, Air	200 °C	392 °F	Continuous
	300 °C	572 °F	Intermittent
Minimum Service Temperature, Air	-55.0 °C	-67.0 °F	Continuous
	-55.0 °C	-67.0 °F	Intermittent
Glass Transition Temp, Tg	>= 55.0 °C	>= 131 °F	Dynamic Cure 20—200°C /ISO 25 Min; Ramp 10—200°C @ 20°C/Min

Processing Properties	Metric	English	Comments
Cure Time	30.0 min @Temperature 100 °C	0.500 hour @Temperature 212 °F	minimum
	1440 min @Temperature 23.0 °C	24.0 hour @Temperature 73.4 °F	minimum
Pot Life	90 min	90 min
Shelf Life	12.0 Month @Temperature 25.0 °C	12.0 Month @Temperature 77.0 °F

Descriptive Properties
Color	Tan		Part A
	Tan		Part B
Consistency	Smooth paste
Mix Ratio by Weight	1:1
Number of Components	Two
Weight Loss	0.47%		200°C
	0.92%		250°C
	1.62%		300°C

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PPOXYT152 / 141191

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