Accession Number:
ADA279939
Title:
Diffusion of Water Vapour Through Cold Gore-Tex(trademark)
Descriptive Note:
Corporate Author:
DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)
Personal Author(s):
Report Date:
1993-07-01
Pagination or Media Count:
22.0
Abstract:
A simple gravimetric procedure was devised to measure the water vapour diffusion resistance of waterproof, water vapour permeable textiles at temperatures below freezing. The apparent resistance of a hydrophilic film, part of a Gore-TexTM laminate, increased exponentially with a decrease in temperature. At sub-zero temperatures, water vapour transfer through this film was only a few percent of what it is at room temperature. The diffusion process in such materials is discussed. other hydrophilic films are likely to be similarly affected.
Descriptors:
Subject Categories:
- Meteorology
- Inorganic Chemistry
- Laminates and Composite Materials
- Optics