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PRODUCT DATA of Dunmore DE028
MaterialDunmore DE028
Product TypeThermoplastic film.
Chemical CompositionPolyethylene Terephthalate / PETP, Aluminised.
Name of ManufacturerDunmore Coorperation
Keystone Industrial Park, 2900 Wharton Rd., Bristol, PA 19007, USA
+1 215 781 8895
+1 215 781 9293
www.dunmore.com
EXPERIENCE IN PRACTICE
Development StatusCommercial Product
Cost RangeLow to Medium
Lot ReproducibilityGood
Space ExperienceGood
PHYSICAL PROPERTIES
Specific Gravity1.4
Standard Width142 mm
Data Quality: Manufacturer's data
Thickness0.0063 mm
Data Quality: Manufacturer's data
ELECTRICAL PROPERTIES
Electrical surface resistance1e16 Ohm @ 25°C, 38% RH
Data Quality: Manufacturer's data
Electrical Volume Resistivity1e14 ohm.m @ 25°C
Data Quality: Manufacturer's data
THERMAL PROPERTIES
Thermal Conductivity0.61 W/m.K
Data Quality: Manufacturer's data
Thermal Expansion Coefficient30 μstrain/°C
Data Quality: Manufacturer's data
Specific Heat1.3 J/g.K
Data Quality: Manufacturer's data
OPTICAL PROPERTIES
Normal Emittance0.02
Data Quality: Manufacturer's data
Solar Absorbtance0.07
Remark: ASTM E-424 Method A
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
Toxicity/OffgassingPass
Test:NASA NHB 8060.1A
Temperature Range(space)-180 to +150°C
Test:Dupont Data
OutgassingTML = 0.29%, CVCM = 0.00%
Test:ASTM E-595
Moisture AbsorptionLes than 0.8% @ 23°C
Test:ASTM D-570-63
SPECIAL RECOMMENDATIONS
Special RecommendationsNormal use is for internal sheets of multilayer insulation (MLI). Use depends on blanket type and requirement. Suitable venting should be considered for blanket use. Can also be used in crinkled form for cryogenic insulation. · This product is available with vacuum-deposited aluminium on one or both sides. · Widths up to 1574 mm available on special request. · The full Dunmore part number must be designated for precise material description. · This product can be perforated, embossed or crinkled if desired. Patterns are to be specified at the time of ordering. · Also available in 12.5, 25, 51 and 76 micron thicknesses. · Normal emittance value is measured on the aluminised surface.