Abstract
Hollow particle filled composites known as syntactic foams presently find applications in many high temperature, high moisture environments such as undersea drilling and oil exploration because of their low density and resistance to moisture uptake. Carbon nanofibers (CNFs) hold the promise of improving the strength of such composites. Syntactic foams with 1–5 wt.% carbon nanofiber-reinforced epoxy matrix and containing 15–50 vol.% glass hollow microballoons are characterized for environmental degradation using accelerated weathering in a 90°C water bath for two weeks and for residual flexural strength and modulus. The maximum weight gain observed after moisture exposure was 3.5% for the CNF/epoxy and 10% for the CNF/syntactic foam. Strength generally decreased after weathering by up to 69%, with the exception of the composites containing 5 wt.% CNF, which showed an increase in strength. This was attributed to swelling of the matrix leading to improved traction on the fibers.
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References
Gupta, N., et al., Applications of polymer matrix syntactic foams. JOM, 2014. 66(2): p. 245–254.
Sauvant-Moynot, V., N. Gimenez, and H. Sautereau, Hydrolytic ageing of syntactic foams for thermal insulation in deep water: degradation mechanisms and water uptake model. Journal of Materials Science, 2006. 41(13): p. 4047–4054.
Gupta, N., D. Pinisetty, and V.C. Shunmugasamy, Reinforced polymer matrix syntactic foams: effect of nano and micro-scale reinforcement. 2013, New York: Springer.
Grosjean, F., et al., Comprehensive analyses of syntactic foam behaviour in deepwater environment. Journal of Materials Science, 2009. 44(6): p. 1462–1468.
Sauvant-Moynot, V., et al., Hot wet aging of glass syntactic foam coatings monitored by impedance spectroscopy. Progress in Organic Coatings, 2007. 59(3): p. 179–185.
Poveda, R.L., G. Dorogokupets, and N. Gupta, Carbon nanofiber reinforced syntactic foams: Degradation mechanism for long term moisture exposure and residual compressive properties. Polymer Degradation and Stability, 2013. 98(10): p. 2041–2053.
Tagliavia, G., M. Porfiri, and N. Gupta, Influence of moisture absorption on flexural properties of syntactic foams. Composites Part B: Engineering, 2012. 43(2): p. 115–123.
Gimenez, N., V. Sauvant-Moynot, and H. Satureau. Wet ageing of syntactic foams under high pressure/high temperature in deionized water. in International Conference on Offshore Mechanics and Arctic Engineering. 2006. Halkidiki, Greece.
Lefebvre, X., V. Sauvant-Moynot, D. Choqueuse, and P. Chauchot, Durability of syntactic foams for deep offshore insulation: modelling of water uptake under representative ageing conditions in order to predict the evolution of buoyancy and thermal conductivity. Oil & Gas Science and Technology, 2009. 64(2): p. 165–178.
Poveda, R.L. and N. Gupta, Carbon-nanofiber-reinforced syntactic foams: compressive properties and strain rate sensitivity. JOM: Journal of Minerals, Metals, and Materials Society, 2013. 66(1): p. 66–77.
Zhang, L. and J. Ma, Effect of carbon nanofiber reinforcement on mechanical properties of syntactic foam. Materials Science and Engineering: A, 2013. 574(1): p. 191–196.
Poveda, R., S. Achar, and N. Gupta, Thermal Expansion of Carbon Nanofiber-Reinforced Multiscale Polymer Composites. JOM, 2012. 64(10): p. 1148–1157.
Poveda, R.L., S. Achar, and N. Gupta, Viscoelastic properties of carbon nanofiber reinforced multiscale syntactic foam. Composites Part B: Engineering, 2014. 58(1): p. 208–216.
Dimchev, M., R. Caeti, and N. Gupta, Effect of carbon nanofibers on tensile and compressive characteristics of hollow particle filled composites. Materials & Design, 2010. 31(3): p. 1332–1337.
ASTM International, ASTM Standard D7264, “Standard Test Method for Flexural Properties of Polymer Matrix Composite Materials”. 2007: West Conshohocken, PA.
Shen, C.-H. and G.S. Springer, Moisture Absorption and Desorption of Composite Materials. Journal of Composite Materials, 1976. 10(1): p. 2–20.
Srihari, S., A. Revathi, and R.M.V.G.K. Rao, Hygrothermal Effects on RT-Cured Glass-Epoxy Composites in Immersion Environments. Part A: Moisture Absorption Characteristics. Journal of Reinforced Plastics and Composites, 2002. 21(11): p. 983–991.
Adamson, M.J., Thermal expansion and swelling of cured epoxy resin used in graphite/epoxy composite materials Journal of Materials Science, 1980. 15: p. 1736–1745.
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Zeltmann, S.E., Poveda, R., Gupta, N. (2015). Environmental Degradation of Carbon Nanofiber Reinforced Syntactic Foams. In: TMS 2015 144th Annual Meeting & Exhibition. Springer, Cham. https://doi.org/10.1007/978-3-319-48127-2_18
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DOI: https://doi.org/10.1007/978-3-319-48127-2_18
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48608-6
Online ISBN: 978-3-319-48127-2
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