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Dimensional changes in glass‐filled epoxy resin as a result of absorption of atmospheric moisture
Author(s) -
Gazit S.
Publication year - 1978
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1978.070221219
Subject(s) - epoxy , materials science , composite material , relative humidity , absorption of water , glass microsphere , absorption (acoustics) , glass transition , moisture , polymer , microsphere , chemical engineering , thermodynamics , physics , engineering
The absorption of water from selected, constant relative humidity atmospheres by glass‐filled or reinforced epoxy resin was studied. Four groups of samples were prepared: unfilled epoxy, epoxy filled with glass microspheres, epoxy reinforced with transverse unidirectional glass fabric, and epoxy reinforced with longitudinal unidirectional glass fabric. The absorption and dimensional change rates were measured and formulated in an exponential expression. From the ratio of relative absorption to relative length change, the “hygro‐elastic coefficient” was defined.