Avaliação da temperatura de transição vítrea de compósitos poliméricos reparados de uso aeronáutico
作者： Jane MF de Paiva , Sérgio Mayer , Geraldo M Cândido , Mirabel C Rezende , None
DOI: 10.1590/S0104-14282006000100016
关键词:
摘要: This work shows the evaluation of glass transition temperature (T g ) by DMTA three different families repaired polymeric composites, manufactured with carbon fiber fabric/epoxy F584, F161 and aramide F161, respectively. The composites were laminated conventional hand lay-up process used in aeronautical industry. Afterwards, simulated damages, scarf type, made overlapping layers F155 epoxy resin prepregs them. curves show effects combination systems resins on T values and, consequently, service laminate. repairing material (based adhesive film FM73) decreased laminates approximately 30 °C for laminates. conditioning laminate under elevated humidity provoked a more decrease (reduction 40 °C). reduction is attributed to migration into system during cure also plasticization water diffusion hygrothermal conditioning. leads composite.
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