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Tra-Con Tra-Cast FS255 Flexible Clear Epoxy Casting Compound

Category Polymer , Adhesive , Thermoset , Epoxy
Manufacturer Tra-Con, Inc.
Trade Name Tra-Cast
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Tra-Con Tra-Cast FS255 Flexible Clear Epoxy Casting Compound.pdf
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Material Notes:
TRA-CAST FS-255 is a clear, low viscosity, epoxy casting compound recommended for industrial embedding and casting applications where its combination of superior properties -- good clarity, long pot life, near-zero shrinkage, low residual stress, improved flexibility, and excellent impact strength -- are required. It readily bonds to ceramics, glass, most metals, and many plastics, and it is therefore especially useful for aerospace and electronic applications where its flexibility, consistency and self-sealing properties are needed (i.e. repottable electronic assemblies). Fully cured TRA-CAST FS-255 is a clear electrical insulator which is mechanically strong and tougher than comparable silicone gels, and it is further resistant to water, weather, gases and vapors, petroleum products (fuels, solvents and lubricants), mild acids and alkalis, salt solutions and many other organic and inorganic compounds. A vacuum de-airing step for 15 minutes may be required for the best clarity and optical properties. Longer cures at 25°C may be required for more fully matured castings.Information provided by Tra-Con Inc.
Physical Properties Metric English Comments
Specific Gravity 1.15 g/cc
1.15 g/cc
Mixed
Solids Content 100 %
100 %
Reactive Solids Content
Mechanical Properties Metric English Comments
Hardness, Shore A 85
85
Hardness, Shore D 30
30
Elongation at Yield 66 %
66 %
Thermal Properties Metric English Comments
CTE, linear 61.0 µm/m-°C

@Temperature 20.0 °C
33.9 µin/in-°F

@Temperature 68.0 °F
Maximum Service Temperature, Air 115 °C
239 °F
Minimum Service Temperature, Air -70.0 °C
-94.0 °F
Optical Properties Metric English Comments
Transmission, Visible 90 %
90 %
clear; thickness not quantified
Electrical Properties Metric English Comments
Volume Resistivity 1.00e+14 ohm-cm
1.00e+14 ohm-cm
Dielectric Constant 3.9

@Frequency 1000 Hz
3.9

@Frequency 1000 Hz
Dielectric Strength 15.4 kV/mm
390 kV/in
Processing Properties Metric English Comments
Cure Time 420 min
7.00 hour
2 hrs @ 25°C + 5 hrs @ 55°C
1440 min

@Temperature 25.0 °C
24.0 hour

@Temperature 77.0 °F
Pot Life 120 min
120 min
Descriptive Properties Value Comments
Color Clear
Mix Ratio, parts by weight 100/34
Resin/Hardener
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