UV-Resistant GFRP Composite using Carbon Nanotubes
Degradation due to exposure to ultraviolet (UV) radiation is an important durability challenge with glass fiber reinforced polymer (GFRP) composite. Design and construction guidelines of GFRP suggest using UV protection paint to prevent GFRP degradation. In this study we examine the possible use of multi-walled carbon nanotubes (MWCNTs) dispersed in epoxy matrix to produce UV-resistant GFRP composite. We suggest that MWCNTs can result in a significant improvement to UV degradation resistance in the GFRP. Direct tension tests of GFRP coupons incorporating 0.25 wt%, 0.50 wt%, and 1.0 wt% of MWCNTs show inherent stability and good resistance to UV degradation. Microstructural analysis shows the ability of MWCNTs to resist polymer backbone disassociation caused by UV radiation thus preventing UV degradation in GFRP. Scanning electron microscopy (SEM) images show MWCNTs can resist microcracking caused by UV radiation and thus improve UV degradation resistance of GFRP.
R. Chennareddy et al., "UV-Resistant GFRP Composite using Carbon Nanotubes," Construction and Building Materials, vol. 220, pp. 679 - 689, Elsevier Ltd, Sep 2019.
The definitive version is available at https://doi.org/10.1016/j.conbuildmat.2019.05.167
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Carbon nanotubes; GFRP durability; Glass fibers; Ultra-violet radiation
International Standard Serial Number (ISSN)
Article - Journal
© 2019 Elsevier Ltd, All rights reserved.
01 Sep 2019