Gas permeability measurements for film envelope materials
Abstract
Method and apparatus for measuring the permeability of polymer film materials such as used in super-insulation powder-filled evacuated panels (PEPs) reduce the time required for testing from several years to weeks or months. The method involves substitution of a solid non-outgassing body having a free volume of between 0% and 25% of its total volume for the usual powder in the PEP to control the free volume of the ``body-filled panel.`` Pressure versus time data for the test piece permit extrapolation to obtain long term performance of the candidate materials. 4 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 644411
- Patent Number(s):
- 5750882
- Application Number:
- PAN: 8-832,824
- Assignee:
- Lockheed Martin Energy Research Corp., Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 12 May 1998
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; PERMEABILITY; POLYMERS; PERFORMANCE TESTING; THERMAL INSULATION; MEASURING METHODS; TEST FACILITIES
Citation Formats
Ludtka, G M, Kollie, T G, Watkin, D C, and Walton, D G. Gas permeability measurements for film envelope materials. United States: N. p., 1998.
Web.
Ludtka, G M, Kollie, T G, Watkin, D C, & Walton, D G. Gas permeability measurements for film envelope materials. United States.
Ludtka, G M, Kollie, T G, Watkin, D C, and Walton, D G. Tue .
"Gas permeability measurements for film envelope materials". United States.
@article{osti_644411,
title = {Gas permeability measurements for film envelope materials},
author = {Ludtka, G M and Kollie, T G and Watkin, D C and Walton, D G},
abstractNote = {Method and apparatus for measuring the permeability of polymer film materials such as used in super-insulation powder-filled evacuated panels (PEPs) reduce the time required for testing from several years to weeks or months. The method involves substitution of a solid non-outgassing body having a free volume of between 0% and 25% of its total volume for the usual powder in the PEP to control the free volume of the ``body-filled panel.`` Pressure versus time data for the test piece permit extrapolation to obtain long term performance of the candidate materials. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {5}
}
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