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PRODUCT DATA of Sheldahl G423020
MaterialSheldahl G423020
Product TypeThermal-control, electrically-conductive, polymer film.
Chemical CompositionFluorocarbon (FEP), Aluminised and ITO coated.
Name of ManufacturerSheldahl
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 StatusSpecial Commercial Product
Cost RangeHigh
Lot ReproducibilityGood
Space ExperienceLimited
PHYSICAL PROPERTIES
Specific Gravity2.15
Remark:DuPont’s Data
Standard Width1220 mm
Remark:Manufacturer’s Data
Thickness0.05 mm
Remark:Manufacturer’s Data
ELECTRICAL PROPERTIES
Electrical Surface Resistivity1000 ohm(maximum)
Remark:Manufacturer’s Data, 2 VDC
Electrical Volume Resistivity1e15 ohm.m(minimum)
Remark:DuPont’s Data, 296 K, 38% RH
Dielectric Strength169 kV/mm
Remark:(of FEP film) DuPont’s Data, 296 K
THERMAL PROPERTIES
Thermal Conductivity0.194 W/m.K
Remark:DuPont’s Data
Thermal Expansion Coefficient83 μstrain/°C
Remark:DuPont’s Data, 223 - 343 K
Specific Heat1.17 J/g.K
Remark:DuPont’s Data
OPTICAL PROPERTIES
Thermal Emittance0.47
Data Quality: Typical Data
Solar Absorbtance0.16
Data Quality: Typical Data
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
Temperature Range(space)88 K to 423 K
Remark:DuPont’s Data
Moisture Absorption0.0001
Remark:DuPont’s Data
SPECIAL RECOMMENDATIONS
Special RecommendationsThe 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.