P-126: Stable Measurement of 10 super(-6) gm super(-2) day super(-1) Water Vapor Transmission Rate in Barrier Materials by Intermittent Accumulation and Release by a Cold Trap

We report an ultrasensitive and stable instrument for water vapor transmission rate evaluation. Water vapor permeated through gas barrier is condensed by a cold trap and measured by a mass spectrometer. Intermittent absorption and release operation of the cold trap enables the measurement immune to...

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Veröffentlicht in:	SID International Symposium Digest of technical papers 2015-06, Vol.46 (1), p.1639-1642
Hauptverfasser:	Nakano, Yoichiro, Takahashi, Yoshikazu, Kanno, Toshiyuki, Yoshida, Hajime, Shimada, Toshihiro
Format:	Artikel
Sprache:	eng
Schlagworte:	Barriers Cold traps Condensing Mass spectrometers Technical papers Water vapor
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Beschreibung
Zusammenfassung:	We report an ultrasensitive and stable instrument for water vapor transmission rate evaluation. Water vapor permeated through gas barrier is condensed by a cold trap and measured by a mass spectrometer. Intermittent absorption and release operation of the cold trap enables the measurement immune to gradual change of background H sub(2)O.
ISSN:	0097-966X 2168-0159
DOI:	10.1002/sdtp.10146