DUNMORE multi-layer
insulation filMS & TAPES
DUNMORE multilayer insulation films and tapes are based on three firm foundations: polyimide (Kapton®), polyester, and Teflon® films. From those starting points, DUNMORE has engineered and manufactured over 780 functional-specific structures. DUNMORE multilayer insulation films and tapes include metallized films, corrosion resistant coated films, scrim-reinforced laminations, and pressure-sensitive tapes.
| Key Properties of Aluminum-Coated Polyester, Polymide, and Fluorocarbon Films |
| |
| |
Polyester |
Polyimide |
Fluorocarbon |
Test Methods |
| Physical Properties |
@ 25°C (77°F) |
@ 23°C (73°F) |
@ 23°C (73°F) |
|
Density |
1.4 g/cc |
1.42 g/cc |
2.13-2.14 g/cm² |
ASTM D 1505-68 |
| Thickness |
25 guage (6.3 microns) |
100 guage (25 microns) |
200 guage (50 microns) |
DuPont® Data |
| Yield |
576 ft2/lb |
136 ft2/lb |
45 ft2/lb |
ASTM D 882-88 |
| Tensile Strength |
28,000 PSI/1972 kg/cm2 |
24,000 PSI/1690 kg/cm2 |
2,500 PSI 176 kg/cm2 |
ASTM D 882-88 (Method A1) |
| Thermal Properties |
|
|
|
|
| Thermal Conductivity‡ |
6.1 x 10-3 Watts
cm-1ºC-1 |
6.1 x 10-3 Watts
cm-1ºC-1 |
1.94 x 10-3 Watts
cm-1ºC-1 |
ASTM D 696 |
| Specific Heat |
.28 (cal/gm/ °C) |
.28 (cal/gm/°C) |
.28 (cal/gm/°C) |
DuPont® Data |
Solar Absorptance* |
≤ 0.14 |
≤ 0.14 |
≤ 0.14 |
ASTM E-903/E490 |
| Emissivity* |
0.035 (avg) |
0.035 (avg) |
0.035 (avg) |
ASTM E-408 (Method A) |
| Service Temperature (nom.) |
-250°C +150°C |
-250°C + 204°C |
-150°C +150°C |
DuPont® Data |
| Outgassing |
% TML < 1.0% %CVCM < 0.1% |
% TML < 1.0% %CVCM < 0.1% |
% TML < 1.0% %CVCM < 0.1% |
ASTM E-595
ASTM E-595
|
| Electrical Properties |
|
|
|
|
| Resistivity, Ohms/ |
< 1.0 Ω / |
< 1.0 Ω/ |
< 1.0 Ω/ |
DUNMORE Data |
| VDA Thickness Angstroms |
≤ 300 Å |
≤ 300 Å |
≤ 300 Å |
DUNMORE Data |
| Chemical Properties |
|
|
|
|
Moisture Absorption 50% R.H. @ 25ºC (77ºF)
|
1.0% (nominal) |
4.0% (max) |
1.0% (nominal) |
ASTM D 570-92 |
Values based on 25 guage polyester, 100 guage polymide, and flourocarbon films.
*Values measured on the VDA side of the substrate.
‡Values based on unmetallized films.
***NASA does not endorse commercial products or service. |
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