期刊
JOURNAL OF COMPOSITE MATERIALS
卷 37, 期 17, 页码 1553-1574出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0021998303029421
关键词
dynamic mechanical properties; diffusion; mechanical properties; water absorption; unsaturated polyester; vinyl ester
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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