A.17.8. Dunmore DE 320

PRODUCT

Type

Thermal Control Polymer Film.

Chemical Composition

Polyimide (Kapton HN), Aluminised.

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

Good

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

Nature

Typical Value

Remarks

Specific Gravity

1.42

Dupont Data

Thickness

25 mm

Dupont / Manufacturer's Data

Tensile Strength

170 MPa

Dupont Data (@ 25C)

Thermal Expansion Coefficient

20 x 10-6 C -1

Dupont Data (-14 to 38C)

Thermal Conductivity

0.155 W m -1 C -1

Dupont Data (@ 23C)

Specific Heat

1.09 J g-1 C -1

Dupont Data (@ 23C)

Volume Resistivity

1.5 x 1015 W m

Dupont Data

Solar Absorptance

0.14 (aluminised surface)

Manufacturer's Data

Normal Emittance:

 

 

Aluminised Surface

0.02

Manufacturer's Data

Film Side

0.70

Manufacturer's Data

Standard Width

112 cm

Manufacturer's Data

PROPERTIES RELEVANT TO SPACE USE

Nature

Typical Value

Type of Test

Temperature Range

-190 to +204C

Average exposure range

Outgassing

TML = 0.21%, CVCM = 0.00%

ASTM E-595

Moisture Absorption

1.8% @ 23C and 50% RH

Dupont Data

SPECIAL RECOMMENDATIONS

          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.