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Gas Permeation through Vacuum Materials
Author(s) -
Vinogradov M. L.,
Barchenko V. T.,
Lisenkov A. A.,
Kostrin D. K.,
Babinov N. A.
Publication year - 2015
Publication title -
vakuum in forschung und praxis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.213
H-Index - 13
eISSN - 1522-2454
pISSN - 0947-076X
DOI - 10.1002/vipr.201500584
Subject(s) - permeation , helium , polyethylene , materials science , coating , polymer , permeability (electromagnetism) , composite material , ceramic , composite number , ultra high vacuum , analytical chemistry (journal) , membrane , chemistry , nanotechnology , chromatography , organic chemistry , biochemistry
The aim of this research is to study the gas permeability of materials being used to create elements of unmanned aerial vehicles. The measurement system for gas permeation coefficients of composite materials is designed on the basis of a helium leak detector. Due to permeation through the Viton sealing the smallest flow that can be correctly measured by the system is 10 ‐10 Pa · m 3 /s. Verification of the system was held on PTFE polymer sample with a known helium permeability value. Gas permeability of three composite materials was studied. The steadystate helium permeation coefficient in [Pa · m 3 /s] · [m/(m 2 · bar)] for high molecular weight polyethylene (HM‐WPE) with 100 nm copper coating is 3.1 · 10 ‐8 , for low pressure polyethylene (HDPE 209‐07) with 100 nm copper coating it is 1.9 · 10 ‐7 ; for vacuum‐tight ceramics VK94‐1 with glue K400 layer it is 2.2 · 10 ‐9 . Authors will be glad to measure the gas permeability of new materials that can be provided by readers of this publication.