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Tra-Con Tra-Cast 3108 General Purpose Epoxy Casting Compound

Category Polymer , Adhesive , Thermoset , Epoxy
Manufacturer Tra-Con, Inc.
Trade Name Tra-Cast
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Tra-Con Tra-Cast 3108 General Purpose Epoxy Casting Compound.pdf
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Material Notes:
TRA-CAST 3108 is a low viscosity two-part formulation recommended for underfill and encapsulating applications where the combination of good mechanical thermal and electrical properties are required. It is an all liquid system with excellent flow and wetting characteristics, exhibits superior adhesion to glass, ceramics, most metals, many plastics (includes potting shells) and other electronic materials, contains no solvents, and is easily mixed, handled and cured with minimum shrinkage at room temperatures. The fully cured TRA-CAST 3108 is an electrical insulator with good impact and thermal shock resistance. It is further resistant to water, weather, gases, galvanic action, petroleum fuels and solvents, alcohol, salts and many acids and alkalis. This adhesive complies with the requirements of NASA Outgassing Specification when tested according to ASTM E-595-90. Information provided by Tra-Con Inc.
Physical Properties Metric English Comments
Specific Gravity 1.70 g/cc
1.70 g/cc
Mixed
Solids Content 100 %
100 %
Reactive Solids Content
Volatile Organic Compounds (VOC) Content 4.27 g/l
4.27 g/l
Water Absorption 0.080 %
0.080 %
After 24 hours
Viscosity 4000 cP

@Temperature 25.0 °C
4000 cP

@Temperature 77.0 °F
Mixed (10 rpm)
Mechanical Properties Metric English Comments
Hardness, Shore D 92
92
Adhesive Bond Strength 8.62 MPa
1250 psi
Lap shear, alum to alum, 24 hrs @ 25°C
20.3 MPa
2950 psi
Lap shear, alum to alum, 2 hrs @ 65°C
Thermal Properties Metric English Comments
CTE, linear 35.0 µm/m-°C

@Temperature 20.0 °C
19.4 µin/in-°F

@Temperature 68.0 °F
Maximum Service Temperature, Air 145 °C
293 °F
Minimum Service Temperature, Air -60.0 °C
-76.0 °F
Glass Transition Temp, Tg 76.0 °C
169 °F
Ultimate Tg
Electrical Properties Metric English Comments
Volume Resistivity 4.00e+16 ohm-cm
4.00e+16 ohm-cm
4.00e+14 ohm-cm

@Temperature 100 °C
4.00e+14 ohm-cm

@Temperature 212 °F
Processing Properties Metric English Comments
Cure Time 60.0 - 120 min

@Temperature 65.0 °C
1.00 - 2.00 hour

@Temperature 149 °F
1440 min

@Temperature 25.0 °C
24.0 hour

@Temperature 77.0 °F
Pot Life 30 min
30 min
Descriptive Properties Value Comments
Color Gray
Heat Distortion Temperature °C 102
Mix Ratio, parts by weight 100/12
Resin/Hardener
Outgassing, NASA, %CVCM 0.01
2 hrs @ 65°C
Outgassing, NASA, %TWL 0.13
2 hrs @ 65°C
Thixotropic Index 1.6
6 rpm/60 rpm
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