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Title: 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 Lab. (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}
}