Water absorption and blistering of glass fibre-reinforced polymer marine laminates with nanoparticle-modified coatings

Macro and microstructural damage was studied in typical glass fibre-reinforced polymer laminates with two types of coating systems – (a) isophtalic gel coat: pure or mixed with SiO2 nanoparticles 5 wt% (5%N) or 10 wt% (10%N) and (b) a two-layer coating system: urethane-modified vinyl ester-based gel...

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Bibliographic Details
Published in:Journal of composite materials 2014-09, Vol.48 (23), p.2805-2813
Main Authors: Landowski, M, Budzik, M, Imielińska, K
Format: Article
Language:English
Subjects:
Barriers
Blistering
Coating
Coatings
Glass fibers
Laminates
Nanoparticles
Nanostructure
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Summary:Macro and microstructural damage was studied in typical glass fibre-reinforced polymer laminates with two types of coating systems – (a) isophtalic gel coat: pure or mixed with SiO2 nanoparticles 5 wt% (5%N) or 10 wt% (10%N) and (b) a two-layer coating system: urethane-modified vinyl ester-based gel coat and additional polyester barrier coat layer. Accelerated tests were performed at 50℃ for 50 days for specimens with nanoparticle-modified gel and for the specimens with or without a barrier coat. Long-term ageing behaviour at 23℃ was assessed for the two-layer systems. Nanoparticle-reinforced specimens (10%) showed some advantage over ‘barrier coat systems' in terms of blister incubation time (16 and 13 days, respectively), while for 5% and 0% nanoparticles, blister incubation times were 3 and 7 days, respectively. Round and/or acicular blisters were observed on the examined surfaces. The varying size, shape and distribution of blisters was illustrated by macro and micrographs showing various failure modes associated with surface blisters.
ISSN:0021-9983
1530-793X
DOI:10.1177/0021998313503877