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	PRODUCT DATA of Sheldahl G423020

Material

Sheldahl G423020

Product Type

Thermal-control, electrically-conductive, polymer film.

Chemical Composition

Fluorocarbon (FEP), Aluminised and ITO coated.

Name of Manufacturer

Sheldahl sheldahl.info@sheldahl.com www.sheldahl.com 150 Sheldahl Rd., Northfield, MN 55057, USA +1 507 663 8000 +1 507 663 8545

	EXPERIENCE IN PRACTICE

Development Status

Special Commercial Product

Cost Range

High

Lot Reproducibility

Good

Space Experience

Limited

	PHYSICAL PROPERTIES

Specific Gravity

2.15 Remark:DuPont’s Data

Standard Width

1220 mm Remark:Manufacturer’s Data

Thickness

0.05 mm Remark:Manufacturer’s Data

	ELECTRICAL PROPERTIES

Electrical Surface Resistivity

1000 ohm(maximum) Remark:Manufacturer’s Data, 2 VDC

Electrical Volume Resistivity

1e15 ohm.m(minimum) Remark:DuPont’s Data, 296 K, 38% RH

Dielectric Strength

169 kV/mm Remark:(of FEP film) DuPont’s Data, 296 K

	THERMAL PROPERTIES

Thermal Conductivity

0.194 W/m.K Remark:DuPont’s Data

Thermal Expansion Coefficient

83 μstrain/°C Remark:DuPont’s Data, 223 - 343 K

Specific Heat

1.17 J/g.K Remark:DuPont’s Data

	OPTICAL PROPERTIES

Thermal Emittance

0.47 Data Quality: Typical Data

Solar Absorbtance

0.16 Data Quality: Typical Data

	RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY

Temperature Range(space)

88 K to 423 K Remark:DuPont’s Data

Moisture Absorption

0.0001 Remark:DuPont’s Data

	SPECIAL RECOMMENDATIONS

Special Recommendations

The material is available in thicknesses of 12, 25, 50 and 125 micron. · The material is available in widths up to 1220 mm. · The material is available with #966 adhesive on the metallised side. · The material is available with perforations. · The front surface of ITO coating can withstand light handling and abrasion, but it should be protected against excessive handling. Consult the manufacturer for further details.