A.17.8. Dunmore
DE 320
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PRODUCT |
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Type |
Thermal Control Polymer Film. |
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Chemical Composition |
Polyimide (Kapton HN), Aluminised. |
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Manufacturer |
Dunmore Corporation Keystone
Industial Park, 2900 Wharton Rd. Bristol,
PA 19007 USA |
Tel: +1 215 781 8895 Fax: +1 215 781 9293 Email: www.dunmore.com |
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EXPERIENCE & AVAILABILITY |
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Development Status |
Special Commercial Product |
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Cost Range |
High |
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Lot Reproducibility |
Good |
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Space Experience |
Good |
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GENERAL PROPERTIES (Physical,
Mechanical, Thermal, Electrical, Optical) |
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Nature |
Typical Value |
Remarks |
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Specific Gravity |
1.42 |
Dupont Data |
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Thickness |
25 mm |
Dupont / Manufacturer's Data |
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Tensile Strength |
170 MPa |
Dupont Data (@ 25°C) |
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Thermal Expansion Coefficient |
20 x 10-6 °C -1 |
Dupont Data (-14 to 38°C) |
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Thermal Conductivity |
0.155 W m -1 °C -1 |
Dupont Data (@ 23°C) |
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Specific Heat |
1.09 J g-1 °C -1 |
Dupont Data (@ 23°C) |
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Volume Resistivity |
1.5 x 1015 W m |
Dupont Data |
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Solar Absorptance |
0.14 (aluminised surface) |
Manufacturer's Data |
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Normal Emittance: |
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Aluminised
Surface |
0.02 |
Manufacturer's Data |
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Film
Side |
0.70 |
Manufacturer's Data |
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Standard Width |
112 cm |
Manufacturer's Data |
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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 |
-190 to +204°C |
Average exposure range |
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Outgassing |
TML = 0.21%, CVCM = 0.00% |
ASTM E-595 |
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Moisture Absorption |
1.8% @ 23°C and 50% RH |
Dupont Data |
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SPECIAL RECOMMENDATIONS |
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·
Normal use is for external sheet on multilayer
insulation (MLI). Suitable venting must be provided, where applicable. ·
This product is also available in 7.6, 12.6, 51.76
and 125 mm
thicknesses. ·
The 7.6 and 12.6 mm grades are available in
widths up to 1270 mm; 25 to 125 mm
grades in widths up to 1524 mm. ·
The full Dunmore part number must be designated for
precise material description. ·
Perforated or embossed versions of the
above-mentioned films are available. Patterns are to be specified at the time
of ordering (film thickness may determine selection). ·
These products can also be aluminised on both sides,
if desired. ·
Solar absorptance value is measured on the aluminised
surface. |
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