A.17.5. Dunmore DE291

PRODUCT

Type

Thermal control polymer film.

Chemical Composition

Polyimide (Kapton HN), Aluminised with pretective coating on both sides.

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

EXPERIENCE & AVAILABILITY

Development Status

Special Commercial Product

Cost Range

High

Lot Reproducibility

Good

Space Experience

Limited

GENERAL PROPERTIES (Physical, Mechanical, Thermal, Electrical, Optical)

Nature

Typical Value

Remarks

Specific Gravity

1.42

Dupont Data

Thickness

7.6 mm

Manufacturer's Data

Tensile Strength

170 MPa

Dupont Data

Thermal Expansion Coefficient

20 x 10-6 C -1

Dupont Data

Thermal Conductivity

0.028 W m -1 C -1

Dupont Data (@ 23C)

Specific Heat

1.09 J g-1 C -1

Dupont Data (@ 23C)

Volume Resistivity

1010 W m

Dupont Data (@ 23C)

Solar Absorptance

0.14

Manufacturer's Data

Normal Emittance

0.030

Manufacturer's Data

Standard Width

122 cm

Manufacturer's Data

PROPERTIES RELEVANT TO SPACE USE

Nature

Typical Value

Type of Test

Temperature Range

-190 to +204C.

Manufacturer's Data

Outgassing

TML = 0.64%, CVCM = 0.03%

ASTM E-595

Moisture Absorption

1.8% @ 50% RH

Dupont Data

SPECIAL RECOMMENDATIONS

          Complies with MIL-STD-810 Method 509 after 24 hours exposure to 5% salt fog, and ASTM B-117.

          Intended primarily for use as inner layers on MLI thermal-control blankets for space vehicles where condensation may be a problem.

          This product is also available in 12.5, 25, 51 and 76 mm thicknesses.

          The full Dunmore part number must be designated for precise material description.

          Perforated or embossed versions of the above-mentioned films are available, although film thickness may control selection. Patterns are to be specified at the time of ordering.

          These films can be aluminised and corrosion-resistant coated on one or both sides.

          Protective coating is a proprietary, fully-cured clear overcoat which protects the aluminised surface from moisture that causes corrosion.