عنوان مقاله [English]
نویسندگان [English]چکیده [English]
In this article, mechanical properties and energy absorption of polyurethane nanocomposite foam reinforced by SiC nano particales under quasi-static and dynamic axial load was investigated. The specimens were prepared initially by mixing of Polyol and nano particales and then diisocyanate was added to the mixture to prepare the foam specimens. To evaluate the mechanical properties of the specimens, tensile, compression and dynamic tests were performed. Furthermore, scanning electron microscopy (SEM) was utilized to study the effect of nano particles on cellular morphology of the foams. The results of experiments show that the tensile strength, compressive strength and energy absorption of the polyurethane nanocomposite foam reinforced with SiC nanoparticles was more than pure polyurethane foam. With the addition of 1 wt% SiC nanoparticles to polyurethane foam, the Young’s modulus and the energy absorption increases 7% and 63%, respectively. Also, by adding SiC nano particles, the uniformity of cell size decreased and the number of cells increases. The results of this research show that the polyurethane nanocomposite foam reinforced with SiC nano particales can be used in various industries as an energy absorber.
 Masciangioli, T., Zhang, W.X. (2003). "Peer reviewed: environmental technologies at the nanoscale". Environmental science & technology, 37(5): pp. 102A-108A.
 Okamoto, M. (2003). "Polymer/layered silicate nanocomposites". iSmithers Rapra Publishing.
 Zakiyan S.E., Famili M.H.N., and Ako M., (2012). "Heterogeneous Nnucleation in Batch Foaming of Polystyrene Using Nanosilica as a Nucleating Agent".Iranian journal of polymer science & technology, (In Persian), 25, pp. 231-240.
 Mahfuz, H., Rangari, V.K., Islam, M.S., Jeelani, S. (2004). "Fabrication, synthesis and mechanicalcharacterization of nanoparticles infused polyurethane foams".Composites Part A, 35,pp. 453–460.
 Xu, Z., Tang, X., Gu, A., Fang, Z. (2007). "Novel preparation and mechanical properties ofrigid polyurethane foam/organoclay nanocomposites".Journal of Applied Polymer Science, 106, pp. 439–447.
 Hao, G. (2006) "Influences of manometer granule on mechanical properties of packaging materials rigid polyurethane foam". Packaging Engineering, 4, 018.
 Fan, X., Xiao-Qing, W. (2009). "Study on compress mechanical properties of reinforced polyurethane rigid foam". Fiber Reinforced Plastics, 3: 014.
Wang, J., Si, G., Yi-Fei, W., Ping, W., Jian-hua, W., Yong-hua, L.(2004)."Preparation of nanosilicon dioxide reinforced rigid polyurethane foam". Journal of National University of Defense Technology, 26(4), pp. 86-89.
Xie, H., Wang, Z. (2005). "In-site generating nano silicon dioxide and its effect as filler onproperties of polyurethane rigid foam".Plastics Science and Technology, 5, 007.
 Javni, I., Zhang, W., Karajkov, V., Petrovic, Z.S., Divjakovic, V. (2002)."Effect of nano- andmicro-silica fillers on polyurethane foam properties.Journal of cellular plastics, 38(3), pp. 229-239.