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ECTFE (HALAR) as a New Material for Primary Sample Containment of Astromaterials

Author
Calaway, Michael J.
Published
March 17, 2014.
Physical Description
1 electronic document
Additional Creators
McConnell, J.T.
Online Version

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Unclassified, Unlimited, Publicly available.
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Summary
Fluoropolymers, such as Teflon (PTFE, PFA, FEP) and Viton (FKM), have been used for over 40 years in curating astromaterials at NASA JSC. In general, fluoropolymers have low outgassing and particle shedding properties that reduce cross-contamination to curated samples. Ethylene - Chlorotrifluoroethylene (ECTFE), commonly called Halar (trademark of Solvay Solexis), is a partially fluorinated semi-crystalline copolymer in the same class of fluoropolymers with superior abrasion resistance and extremely low permeability to liquids, gases, and vapors than any other fluoropolymer (fig. 1). ECTFE coatings are becoming more popular in the nuclear, semiconductor, and biomedical industry for lining isolation containment gloveboxes and critical piping as well as other clean room applications. A study was conducted at NASA JSC to evaluate the potential use of Halar on future sample return missions as a material for primary sample containment.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 20140005750.
JSC-CN-30259.
Lunar and Planetary Science Conference; 17-21 Mar. 2014; The Woodlands, TX; United States.
Terms of Use and Reproduction
Copyright, Distribution as joint owner in the copyright.
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