| All data is for information only------(Home) | |
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| PRODUCT DATA of Sheldahl 146631 |
| Material | Sheldahl 146631 |
| General Information | Previously G425120 |
| Product Type | Thermal-control, electrically-conductive plastic film. |
| Chemical Composition | Polyimide (Kapton H), ITO/Aluminised. |
| 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 |
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| Development Status | Special Commercial Product |
| Cost Range | High |
| Lot Reproducibility | Unknown |
| Space Experience | Limited |
| PHYSICAL PROPERTIES |
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| Specific Gravity | 1.42 Remark:DuPont’s Data |
| Standard Width | 122 mm Data Quality: Manufacturer's data |
| Thickness | 0.025 mm Data Quality: Manufacturer's data |
| ELECTRICAL PROPERTIES |
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| Electrical surface resistance | 200000 ohm-sq @ 1V |
| THERMAL PROPERTIES |
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| Thermal Conductivity | 0.155 W/m.K Remark: DuPont’s Data |
| Thermal Expansion Coefficient | 20 μstrain/°C Remark: DuPont’s Data |
| Specific Heat | 1.09 J/g.K Remark: DuPont’s Data |
| OPTICAL PROPERTIES |
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| Thermal Emittance | 0.61 Test: ECSS-Q-70-09 |
| Solar Absorbtance | 0.35 Test: ECSS-Q-70-09 |
| RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY |
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| Temperature Range(space) | -250 to +285°C Data Quality: Manufacturer's data (continuous exposure) |
| SPECIAL RECOMMENDATIONS |
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| Special Recommendations | There exist other thicknesses of the same material: 12.5microns to 127microns. · Normal use is as external sheet of multilayer insulation. Suitable venting must be provided. · The nomenclature of the Sheldahl company can be confusing and identification of films must be known very precisely for each type used. · Front-face ITO layer is degraded by long-term exposure to RH > 60%. · The ITO layer protects the film from atomic oxygen etching if not damaged. · The ITO layer is stabilised against handling damage by a thermal treatment in air at 250°C. |