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Water permeation and electrical properties of pottants, backings, and pottant/backing composites

Author:
Orehotsky, J.
Published:
JAN 1, 1986.
Physical Description:
1 electronic document
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Summary:
It is reported that the interface between plastic film back covers and ethylene vinyl acetates (EVA) or polyvinyl butyral (PVB) in photovoltaic modules can influence water permeation, and electrial properties of the composites such as leakage current and dielectric constant. The interface can either be one of two dissimilar materials in physical contact with no intermixing, or the interface can constitute a thin zone which is an interphase of the two materials having a gradient composition from one material to the other. The former condition is described as a discrete interface. A discrete interface model was developed to predict water permeation, dielectric strength, and leakage current for EVA, ethylene methyl acrylate (EMA), and PVB coupled to Tedlar and mylar films. Experimental data was compared with predicted data.
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Collection:
NASA Technical Reports Server (NTRS) Collection.
Note:
Document ID: 19870007009.
Accession ID: 87N16442.
JPL, California Inst. of Tech., Pasadena Proceedings of the 26th Project Integration Meeting; p 659-676.
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No Copyright.
View MARC record | catkey: 15700764