Organically-modified montmorillonite (OMT) is added in the HDPE and PP matrices into which PEG and PPG are used as a compatibilizer to investigate the behavior of thermal conductivity for polymer/clay nanocomposites. The results indicate that the thermal conductivity of all nanocomposites increases with temperature. Clay incorporation also increases the thermal conductivity. HDPE and PP nanocomposites with 5wt% of clay content show the augmentation of 19 and 23% for thermal conductivity at 20°C with respect to their pure polymers. Mathematical modeling of nanocomposite sheets reveals that the addition of clay into the HDPE and PP matrices up to 10wt%, under the current circumstances of this study, and increase in temperature up to 50°C do not significantly affect the temperature distributions.
Gonnet, P., Liang, Z., Choi, E.S., Kadambala, R.S., Zhang, C., Brooks, J.S., Wang, B. and Kramer, L. (2006). Thermal Conductivity of Magnetically Aligned Carbon Nanotube Buckypapers and Nanocomposites, Curr. Appl. Phys. , 6(1): 119-122.
2.
Gojny, F.H., Wichmann, M.H.G., Fiedler, B., Kinloch, I.A., Bauhofer, W., Windle, A.H. and Schulte, K. (2006). Evaluation and Identification of Electrical and Thermal Conduction Mechanisms in Carbon Nanotube/Epoxy Composites, Polymer, 47(6): 2036-2045.
3.
Clancy, T.C. and Gates, T.S. (2006). Modeling of Interfacial Modification Effects on Thermal Conductivity of Carbon Nanotube Composites , Polymer, 47(16): 5990-5996.
4.
Lu, H., Hu, Y., Xiao, J., Kong, Q., Chen, Z. and Fan, W. (2005). The Influence of Irradiation on Morphology Evolution and Flammability Properties of Maleated Polyethylene/Clay Nanocomposite, Mater . Lett., 59(6): 648-651.
5.
Zhang, J., Jiang, D.D. and Wilkie, C.A. (2006). Polyethylene and Polypropylene Nanocomposites based on a Three Component Oligomerically-modified Clay, Polym. Degrad. Stab., 91(4): 641-648.
6.
Zhang, J., Jiang, D.D. and Wilkie, C.A. (2005). Polyethylene and Polypropylene Nanocomposites based upon an Oligomerically Modified Clay, Thermochim. Acta , 430(1-2): 107-113.
7.
Zhao, C., Qin, H., Gong, F., Feng, M., Zhang, S. and Yang, M. (2005). Mechanical, Thermal and Flammability Properties of Polyethylene/Clay Nanocomposites, Polym. Degrad. Stab. , 87(1): 183-189.
8.
Alhama, F. and Zueco, J. (2007). Application of a Lumped Model to Solids with Linearly Temperature-dependent Thermal Conductivity, Appl. Math. Model. , 31(2): 302-310.
9.
Su, S., Jiang, D.D. and Wilkie, C.A. (2004). Poly(methyl methacrylate), Polypropylene and Polyethylene Nanocomposite Formation by Melt Blending using Novel Polymerically-modified Clays, Polym. Degrad. Stab., 83(2): 321-331.
10.
Zhang, J. and Wilkie, C.A. (2006). Polyethylene and Polypropylene Nanocomposites based on Polymerically-modified Clay Containing Alkylstyrene Units, Polymer, 47(16): 5736-5743.
11.
Lee, J.H. , Jung, D., Hong , C.E., Rhee, K.Y. and Advani, S.G. (2005). Properties of Polyethylene-layered Silicate Nanocomposites Prepared by Melt Intercalation with a PP-g-MA Compatibilizer, Compos. Sci. Technol., 65(13): 1966-2002.
12.
Ray, S.S. and Okamoto, M. (2003). Polymer/layered Silicate Nanocomposites: A Review from Preparation to Processing, Prog. Polym. Sci., 28(11): 1539-1641.
13.
Ahmadi, S.J. , Huang, T.D. and Li , W. (2004). Synthetic Routes, Properties and Future Applications of Polymer-layered Silicate Nanocomposites, J. Mater. Sci., 39(6): 1919-1925.
14.
Chen, Y.M. and Ting, J.M. (2002). Ultra High Thermal Conductivity Polymer Composites , Carbon, 40(3): 359-362.
15.
Mamunya, Y.P. , Davydenko, V.V., Pissis , P. and Lebedev, E.V. (2002). Electrical and Thermal Conductivity of Polymers Filled with Metal Powders, Euro. Polym. J., 38(9): 1887-1897.
16.
Biercuk, M.J. , Llaguno, M.C., Radosavljevic , M., Hyun, J.K. and Johnson, A.T. (2002). Carbon Nanotube Composites for Thermal Management, Appl. Phys. Lett., 80(15): 2767-2769.
17.
Bagchi, A. and Nomura, S. (2006). On the Effective Thermal Conductivity of Carbon Nanotubes Reinforced Polymer Composites, Compos. Sci. Technol. , 66(11-12): 1703-1712.
18.
Sivakumar, R., Guo, S., Nishimura , T. and Kagawa, Y. (2007). Thermal Conductivity in Multi-wall Carbon Nanotube/Silica-based Nanocomposites, Scripta. Mater., 56(4): 265-268.
19.
Hongdian, L. , Yuan, H., Junfeng , X., Qinghong, K., Zuyao, C. and Weicheng, F. (2005). The Influence of Irradiation on Morphology Evolution and Flammability Properties of Maleated Polyethylene/Clay Nanocomposite, Mater. Lett. , 59(6): 648-651.
20.
Mravčáková M., Boukerma, K., Omastová M., Mohamed, M. and Chehimi, M.M. (2006). Montmorillonite/Polypyrrole Nanocomposites. The Effect of Organic Modification of Clay on the Chemical and Electrical Properties, Mater. Sci. Eng. C, 26(2-3): 306-313.
21.
Preston, C.M.L. , Amarasinghe, G., Hopewell , J.L., Shanksa, R.A. and Mathys, Z. (2004). Evaluation of Polar Ethylene Copolymers as Fire Retardant Nanocomposite Matrices, Polym. Degrad. Stab., 84(3): 533-544.
22.
Zanetti, M. and Costa, L. (2004). Preparation and Combustion Behaviour of Polymer/Layered Silicate Nanocomposites Based upon PE and EVA , Polymer, 45(13): 4367-4373.
23.
Lai, S.M. and Chen, C.M. (2007). Preparation, Structure, and Properties of Styrene-ethylene- butylene-styrene block Copolymer/Clay Nanocomposites: Part III. Effectiveness of Compatibilizers, Europ. Polym. J., 43(6): 2254-2264.
24.
García-López, D., Picazo, O., Merino , J.C. and Pastor, J.M. (2003). Polypropylene-clay Nanocomposites: Effect of Compatibilizing Agents on Clay Dispersion, Europ. Polym. J., 39(5): 945-950.
