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.

Subject Categories:

  • Meteorology
  • Inorganic Chemistry
  • Laminates and Composite Materials
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE