Combined effect of seawater and load on methacrylate adhesive
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Combined effect of seawater and load on methacrylate adhesiveAutor(es)
Fecha
2023-04Cita bibliográfica
Rodríguez-Dopico, F. J., Carbas, R.J.C., Borges, C. S. P., Tarrío-Saavedra, J., Da Silva, L.F.M. & García, A. Á (2023). Combined effect of seawater and load on methacrylate adhesive. Heliyon, 9(4). https://doi.org/10.1016/J.HELIYON.2023.e14751
Resumen
[Abstract]: Although the shipbuilding industry is constantly demanding new advanced joining solutions,
adhesive technology is not as developed in the marine as compared to other industries. The main
reason is the lack of specific knowledge that guarantees the durability of the bonded joints in
optimal conditions during the life cycle of a ship. This work simulates in the laboratory a marinelike
environment by immersing an adhesive in seawater and subjecting it to constant loading. The
objective is to characterize the seawater absorption behavior and its consequences on the mechanical,
thermal, and chemical properties of the adhesive after this aging process. Seawater
ingress was determined through gravimetric tests at several load conditions of the tensile strength
of the adhesive. Besides, absorption process was studied using Fick’s Law, determining the
diffusion coefficients. The thermal behavior was monitored with differential scanning calorimetry
(DSC) and the chemical degradation was analyzed using Fourier transform infrared spectroscopy
(FTIR). Also, the mechanical properties were determined by tensile tests. The surface of the adhesive
(dried) was studied by Scanning Electron Microscopy (SEM) technique and the porosity
was measured by physisorption with a high-performance adsorption analyzer. A numerical
simulation was developed using Darcy’s Law combined with continuity equation. The results
show that application of loads and immersion in seawater until full saturation of seawater
improve the mechanical properties of the adhesive, but it affects negatively to the glass transition
temperature. This should be considered when designing adhesive bonding joints on ships.
Palabras clave
Adhesive
Diffusion
Aging
Seawater
Shipbuilding
Load
Diffusion
Aging
Seawater
Shipbuilding
Load
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CC BY-NC-ND 4.0 https://creativecommons.org/licenses/by-nc-nd/4.0/
ISSN
2405-8440