Journal
JOURNAL OF COMPOSITE MATERIALS
Volume 37, Issue 17, Pages 1553-1574Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0021998303029421
Keywords
dynamic mechanical properties; diffusion; mechanical properties; water absorption; unsaturated polyester; vinyl ester
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The effect of hydrothermal degradation on polyester and vinyl ester mat glass Fiber composites on viscoelastic properties is investigated by dynamic mechanical thermal analysis and flexural modulus. The adhesion between fiber and matrix is studied by short-beam shear test and by SEM microphotographs. Storage modulus in the glass state (T-g - 50 K) and rubber state (T-g + 50 K) is also analyzed for the matrix and composites samples, before and after water immersion. Loss tangent (tan delta) is analyzed taken into account the values obtained for the materials in Moisture sorption experiments.
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