Tra-Con Tra-Duct 2907 Silver-Filled Epoxy Adhesive

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Tra-Con Tra-Duct 2907 Silver-Filled Epoxy Adhesive
Categories:	Polymer; Adhesive; Thermoset; Epoxy; Filled/Reinforced Thermoset
Material Notes:	TRA-DUCT 2907 is an electrically conducting silver-filled medium viscosity epoxy compound recommended for electronic bonding and sealing applications that require a combination of good mechanical and electrical properties. This two-part, smooth paste formulation of refined pure silver and epoxy is free of solvents and copper or carbon additives. It develops strong, durable, electrically and thermally conducting bonds and coatings between many different and dissimilar materials such as metals, ceramics, glass and plastic laminates. TRA-DUCT 2907 cures at room temperature and can be used as a "cold-solder" for heat-sensitive components where hot-soldering is impractical. It also can be used for the assembly and repair of electrical modules, printed circuits, wave guides, flat cable and high frequency shields. Information provided by Tra-Con Inc.
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Physical Properties	Original Value	Comments

Viscosity	6500 cP @Temperature 25.0 °C	Mixed (cp #52, 10 rpm)

Mechanical Properties	Original Value	Comments
Hardness, Shore D	85	24 hrs @ 25°C
	87	10 min @ 100°C
	88	2 hrs @ 65°C
Adhesive Bond Strength	1200 psi	Lap shear, alum to alum, 24 hrs @ 25°C
	1300 psi	Lap shear, alum to alum, 10 min @ 100°C
	1500 psi	Lap shear, alum to alum, 2 hrs @ 65°C

Electrical Properties	Original Value	Comments
Volume Resistivity	0.00030 ohm-cm	cured 10 min @ 100°C
	0.0040 ohm-cm	cured 2 hrs @ 65°C
	0.0080 ohm-cm	cured 24 hrs @ 25°C

Thermal Properties	Original Value	Comments
CTE, linear	49.0 µm/m-°C @Temperature 20.0 °C
Glass Transition Temp, Tg	50.0 °C	Ultimate Tg

Processing Properties	Original Value	Comments
Cure Time	2.00 hour @Temperature 65.0 °C
	10.0 min @Temperature 100 °C
	24.0 hour @Temperature 25.0 °C
Pot Life	100 min

Descriptive Properties
Color	Silver
Thixotropic Index	3.5	1 rpm/10 rpm

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PTRAC078 / 71006

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