Abstract
In the present research, the reinforcement effect of vapor grown carbon nanofiber (VGCNF) was studied in relation to the mechanical properties and electrical conduction behavior of fabricated nanocomposites. Different weight fractions of nanofillers into epoxy resin, from 0.05 to 1 wt% and up to 2 wt% for mechanical and electrical properties were investigated. It was found that the optimum improvement in mechanical properties of nanocomposite is obtained at 0.25 wt% of carbon nanofibers. At this filler content, 23 % enhancement in tensile strength and 10 % in flexural strength have been observed. The degree of the VGCNF dispersion has been monitored by means of viscosity variation of the suspension during the sonication process to obtain the optimum sonication time. Finally, the quality of the dispersion for post-cured nanocomposites is characterized by fractured surfaces using the scanning electron microscopy. Agglomerates had a direct effect on the reduction of tensile and flexural strength of nanocomposites. The electrical conductivity was obtained by means of surface measuring method. The optimum amount of filler for the generation of a fine electrical conductivity was found to be around 0.5 wt% of VGCNF. After the threshold point, the electrical conductivity of nanocomposites was slightly raised in spite of adding more filler contents.
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Kuila T, Bhadra S, Yao D, Kim NH, Bose S, Lee JH (2010) Recent advances in graphene based polymer composites. Prog Polym Sci 35:1350–1375
Al-Saleh MH, Sundararaj U (2011) Review of the mechanical properties of carbon nanofiber/polymer composites. Compos Part A 42:2126–2142
Bal S (2010) Experimental study of mechanical and electrical properties of carbon nanofiber/epoxy composites. Mater Design 31:2406–2413
Tibbetts GG, Lake ML, Strong KL, Rice BP (2007) A review of the fabrication and properties of vapor-grown carbon nanofiber/polymer composites. Compos Sci Technol 67:1709–1718
Finegan IC, Tibbetts GG (2001) Electrical conductivity of vapor-grown carbon fiber/thermoplastic composites. J Mater Res 16:1668–1674
Zhang Z, Karger JK, Zou J (2010) Synergetic effect of carbon nanofibers and short carbon fibers on the mechanical and fracture properties of epoxy resin. Carbon 48:4289–4300
Ardanuy M, Rodríguez-Perez MA, Algaba I (2011) Electrical conductivity and mechanical properties of vapor-grown carbon nanofibers/trifunctional epoxy composites prepared by direct mixing. Compos Part B 42:675–681
Hammel E, Tang X, Trampert M, Schmitt T, Mauthner K, Eder A, Potschke P (2004) Carbon nanofibers for composite applications. Carbon 42:1153–1158
Lu X, Zhou J, Lu W, Liu Q, Li J (2008) Carbon nanofiber-based composites for the construction of mediator-free biosensors. Biosensors Bioelectronics 23:1236–1243
Zhou Y, Pervin F, Jeelani S, Mallick PK (2008) Improvement in mechanical properties of carbon fabric–epoxy composite using carbon nanofibers. J Mater Proc Technol 198:445–453
Pervin F, Zhou Y, Rangari VK, Jeelani SH (2005) Testing and evaluation on the thermal and mechanical properties of carbon nano fiber reinforced SC-15 epoxy. Mater Sci Eng A 405:246–253
Choi YK, Sugimoto KI, Song SM, Gotoh YG, Ohkoshi Y, Endo M (2005) Mechanical and physical properties of epoxy composites reinforced by vapor grown carbon nanofibers. Carbon 43:2199–2208
Iwahori Y, Ishiwata S, Sumizawa T, Ishikawa T (2005) Mechanical properties improvements in two-phase and three-phase composites using carbon nano-fiber dispersed resin. Compos Part A 36:1430–1439
Sanchez M, Rams J, Campo M, Jiménez-Suarez A, Urena A (2011) Characterization of carbon nanofiber/epoxy nanocomposites by the nanoindentation technique. Compos Part B Eng 42:638–644
Xu J, Donohoe JP, Pittman CU (2004) Preparation: electrical and mechanical properties of vapor grown carbon fiber (VGCF)/vinyl ester composites. Compos Part A Appl Sci Manufact 35:693–701
Choi YK, Sugimoto KI, Song SM, Endo M (2005) Mechanical and thermal properties of vapor-grown carbon nanofiber and polycarbonate composite sheets. Mater Lett 59:3514–3520
Chitsazzadeh M, Shahverdi H, Shokrieh MM (2011) Fabrication of multi-walled carbon nanotube/vinyl ester nanocomposites: dispersion and stabilization. Defect Diffus Forum 312–315:460–465
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Shokrieh, M.M., Esmkhani, M., Vahedi, F. et al. Improvement of mechanical and electrical properties of epoxy resin with carbon nanofibers. Iran Polym J 22, 721–727 (2013). https://doi.org/10.1007/s13726-013-0170-2
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DOI: https://doi.org/10.1007/s13726-013-0170-2