A.10.5. D.C.
93500
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PRODUCT |
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Type |
Two-part adhesive, potting, coating. |
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Chemical Composition |
Silicone |
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Manufacturer |
N.V. Dow Corning Parc
Industriél, Zone C B-7180
Senette Belgium |
Tel: +32-64-88 80 00 Fax: +32-64-88 84 01 Email: www.dowcorning.com |
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EXPERIENCE & AVAILABILITY |
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Development Status |
Special Commercial Product |
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Cost Range |
Very High |
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Lot Reproducibility |
Excellent |
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Space Experience |
Extensive |
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GENERAL PROPERTIES (Physical,
Mechanical, Thermal, Electrical, Optical) |
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Nature |
Typical Value (standard
version) |
Remarks |
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Specific Gravity |
1.08 |
@ 25°C |
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Viscosity |
8400 cps |
@ 25°C |
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Pot Life |
2 hours |
@ 25°C |
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Hardness |
40 |
Shore A |
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Tensile Strength |
7 MPa |
ASTM D412 Die C |
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Thermal Expansion Coefficient |
300 x 10-6 °C -1 |
Manufacturer’s Data |
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Thermal Conductivity |
0.146 W m-1 °C -1 |
Manufacturer’s Data |
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Electrical Resistivity (volume) |
6.9 x 1012 W m |
ASTM D257 |
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Dielectric Constant |
2.75 |
ASTM D150 (100 Hz) |
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Loss Factor |
0.0011 |
ASTM D150 (100 Hz) |
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Dielectric Strength |
14.8 kV mm-1 |
ASTM D149 |
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Optical Transmission |
97.5% |
Solar cell measurement |
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Shelf Life |
24 Months |
Manufacturer’s Data |
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Glass Transition Temperature |
-84°C |
TMA |
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Specific Heat |
0.867 J g-1 °C -1 |
@ 0°C |
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PROPERTIES RELEVANT TO SPACE USE |
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Nature |
Typical Value |
Type of Test |
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Temperature Range |
-65°C to +200°C. |
Long Term |
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Outgassing |
TML = 0.30%, RML =0.28%, CVCM = 0.03% |
ECSS-Q-70-02 |
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Thermal Cycling |
Pass |
ECSS-Q-70-04 |
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Oxygen Index |
49.5 |
ECSS-Q-70-21 |
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Ionising Radiation |
200Mrad (Co60 source) |
Manufacturer’s Data |
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Flammability |
Pass (24.5% O2): tested as coating on FR4
PCB |
NASA NHB 8060-1B |
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SPECIAL RECOMMENDATIONS |
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·
Recommended cure: 7 days at room temperature. ·
DC 93500 can be filled with silica for thixotropy and
with silver powder for electrical conductance. In these cases, a high
temperature cure is necessary (24 hours @ 80°C). ·
Where high adhesion is required, use a primer: DC
1200 (red) or DC 92023 (clear). ·
Sensitive to contamination, particularly when cured
in thin layers. ·
Three commercial versions are available: DC 93500
(thixotropic), DC 93500 (high viscosity) and DC 93500 (low viscosity). |
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