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A platform for research: civil engineering, architecture and urbanism
UV-resistant GFRP composite using carbon nanotubes
https://orcid.org/0000-0001-6928-9875
Highlights MWCNTs well-dispersed in resin prior to fabrication produce a UV-resistant GFRP. 0.5–1.0 wt% carboxylic functionalized MWCNTs protect GFRP against UV degradation. UV-resistant GFRP eliminates the need to apply UV protection paint.
Abstract 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.
UV-resistant GFRP composite using carbon nanotubes
https://orcid.org/0000-0001-6928-9875
Highlights MWCNTs well-dispersed in resin prior to fabrication produce a UV-resistant GFRP. 0.5–1.0 wt% carboxylic functionalized MWCNTs protect GFRP against UV degradation. UV-resistant GFRP eliminates the need to apply UV protection paint.
Abstract 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.
UV-resistant GFRP composite using carbon nanotubes
https://orcid.org/0000-0001-6928-9875
Highlights MWCNTs well-dispersed in resin prior to fabrication produce a UV-resistant GFRP. 0.5–1.0 wt% carboxylic functionalized MWCNTs protect GFRP against UV degradation. UV-resistant GFRP eliminates the need to apply UV protection paint.
Abstract 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.
UV-resistant GFRP composite using carbon nanotubes
Chennareddy, Rahulreddy (author) / Tuwair, Hesham (author) / Kandil, Usama F. (author) / ElGawady, Mohamed (author) / Reda Taha, M.M. (author)
Construction and Building Materials ; 220 ; 679-689
2019-05-27
11 pages
Article (Journal)
Electronic Resource
English
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