Effect of hydrostatic pressure on the water absorption of glass fibre-reinforced epoxy resin
1988; Elsevier BV; Volume: 19; Issue: 5 Linguagem: Inglês
10.1016/0010-4361(88)90122-x
ISSN1878-7134
Autores Tópico(s)Material Properties and Processing
ResumoThe use of glass fibre-reinforced epoxy resin immersed at great depths in water has been simulated by immersion tests under high hydrostatic pressures. The effect of these high pressures on water uptake has been studied and any changes in properties due to this environment revealed. Two types of composites differing only in the presence or absence of a size (coupling agent) on the glass fibres have been examined. The absence of a size increased water uptake significantly at all pressures considered. The coefficient of diffusivity of the unsized fibre composite decreased with increasing pressure whereas no change was seen when a size was present. A slight decrease in water uptake was observed with increasing hydrostatic pressure indicating a closing of spaces in which water can be lodged under low pressures. Changes in properties were associated with water absorption and the high hydrostatic pressure was seen to play only a secondary role.
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