Browse > Article
http://dx.doi.org/10.7234/composres.2016.29.5.306

Investigation of Thermal Stability of Epoxy Composite Reinforced with Multi-Walled Carbon Nanotubes and Micrometer-Sized Silica Particles  

Oh, Ryun (Division of Mechanical Design Engineering, Chonbuk National University)
You, Byeong Il (Division of Mechanical Design Engineering, Chonbuk National University)
Ahn, Ji Ho (Division of Mechanical Design Engineering, Chonbuk National University)
Lee, Gyo Woo (Division of Mechanical Design Engineering, Chonbuk National University)
Publication Information
Composites Research / v.29, no.5, 2016 , pp. 306-314 More about this Journal
Abstract
In this study, to improve the thermal stabilities of the epoxy composite specimens in addition to the enhanced mechanical properties, those were reinforced with carbon nanotubes and micrometer-sized silica particles. To disperse the filler in matrix relatively simple physical process, specimens were fabricated using shear mixing and sonication. Tensile strength, coefficients of thermal expansion and thermal conductivity of the specimens were measured with varied contents of the two fillers. The mechanical and thermal properties were also discussed, and the experimental results of thermal expansion related to the thermal stability of the specimens were compared with those from several micromechanics models. The hybrid composites specimens incorporating 0.6 wt％ of carbon nanotubes and 50 wt％ of silica particles showed better mechanical properties than the others with increase in tensile strength up to 11％, with respect to those of the baseline specimens. As the silica contents were increased the thermal expansion was reduced down to 36%, and the thermal stability was improved with the decreased thermal deformation. Thermal conductivity of the epoxy composite specimens incorporating 50 wt％ of silica particles was enhanced, which demonstrate improvement of 72%. The mechanical and thermal properties of the hybrid composites specimens incorporating the two fillers were improved simultaneously.
Keywords
Hybrid composites; Epoxy; Carbon nanotubes; Silica particles; Mechanical property; Coefficient of thermal expansion; Thermal stability; Thermal conductivity; Micromechanics models;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Lavorgna, M., Romeo, V., Marton, A., Zarrelli, M., Giordano, M., and Buonocore, G.G., "Silanization and Silica Enrichment of Multiwalled Carbon Nanotubes: Synergistic Effects on the Thermal-mechanical Properties of Epoxy Nanocomposites," European Polymer Journal, Vol. 49, 2013, pp. 428-438.   DOI
2 Chung, E.H., Chen, L.M., Wang, W.H., Lai, Y., Yang, P.F., and Lin, H.P., "Effects of Mesoporous Silica Coated Multi-wall Carbon Nanotubes on the Mechanical and Thermal Properties of Epoxy Nanocomposites," Journal of the Taiwan Institute of Chemical Engineers, Vol. 45, 2014, pp. 2813-2819.   DOI
3 Cui, W., Du, F., Zhao, J., Zhang, W., Yang, Y., Xie, X., and Mai, Y.W., "Improving Thermal Conductivity While Retaining High Electrical Resistivity of Epoxy Composites by Incorporating Silica-coated Multi-walled Carbon Nanotubes," Carbon, Vol. 49, 2011, pp. 495-500.   DOI
4 Shenogin, S., Xue, L.P., Ozisik, P., Keblinski, P., and Cahill, D.G., "Role of Thermal Boundary Resistance on the Heat Flow in Carbon-nanotube Composites," Journal of Applied Physics, Vol. 95, 2004, pp. 8136-8144.   DOI
5 Yang, S.Y., Ma, C.C.M., Teng, C.C., Huang, Y.W., Liao, S.H., and Huang, Y.L., "Effect of Functionalized Carbon Nanotubes on the Thermal Conductivity of Epoxy Composites," Carbon, Vol. 48, 2010, pp. 592-603.   DOI
6 Gojnya, F., Wichmanna, M., Fiedlera, B., Kinlochb, I., Bauhofere, W., Windleb, A., and Schultea, K., "Evaluation and Identification of Electrical and Thermal Conduction Mechanisms in Carbon Nanotube/epoxy Composites," Polymer, Vol. 47, 2006, pp. 2036-2045.   DOI
7 Xu, Y., Ray, G., and Abdel-Magid, B., "Thermal Behavior of Single-walled Carbon Nanotube Polymer-matrix Composites," Composites Part A: Applied Science and Manufacturing, Vol. 37, 2006, pp. 114-121.   DOI
8 Chung, D.D.L., "Electromagnetic Interference Shielding Effectiveness of Carbon Materials," Carbon, Vol. 39, 2001, pp. 279-285.   DOI
9 Xu, Y., Chung, D.D.L., and Mroz, C., "Thermally Conducting Aluminum Nitride Polymer-Matrix Composites," Composites Part A: Applied Science and Manufacturing, Vol. 32, pp. 2001, 1749-1757.   DOI
10 Seo, M.K., Lee, J.R., and Park, S.J., "Crystallization Kinetics and Interfacial Behaviors of Polypropylene Composites Reinforced with Multi-walled Carbon Nanotubes," Materials Science and Engineering A, Vol. 404, 2005, pp. 79-84.   DOI
11 Wakashima, K., and Tsukamoto, H., "Mean-field Micromechanics Model and Its Application to the Analysis of Thermomechanical Behaviour of Composite Materials," Materials Science Engineering: A, Vol. 146, 1991, pp. 291-316.   DOI
12 Matejka, L., Dukh, O., and Kolarik, J., "Reinforcement of Cross-linked Rubbery Epoxies by In-situ Formed Silica," Polymer, Vol. 41, 2000, pp. 1449-1459.   DOI
13 Cha, J.M., Jin, S.H., Shim, J.H., Park, C.S., Ryu, H.J., and Hong, S.H., "Functionalization of Carbon Nanotubes for Fabrication of CNT/epoxy Nanocomposites," Materials & Design, Vol. 95, 2016, pp. 1-8.   DOI
14 Wang, J.G., Fang, Z.P., Gu, A.J., Xu, L.H., and Liu, F., "Effects of Amino-functionalization of Multi-wall Carbon Nanotubes on Dispersion with Epoxy Resin Matrix," Journal of Applied Polymer Science, Vol. 48, 2010, pp. 592-603.
15 Kim, S., Kim, J.K., Lee, S.H., Park, S.J., and Kang, K.H., "Thermophysical Properties of Multiwalled Carbon Nanotube-reinforced Polypropylene Composites," International Journal of Thermophysics, Vol. 27, 2006, pp. 152-160.   DOI
16 Xia, J., Li, J., Zhang, G., Zeng, X., Niu, F., Yang, H., Sun, R., and Wong, C.P., "Highly Mechanical Strength and Thermally Conductive Bismaleimide-triazine Composites Reinforced by $Al_2O_3$@polyimide Hybrid Fiber," Composites: Part A, Vol. 80, 2016, pp. 21-27.   DOI
17 Zeng, X., Yu, S., Sun, R., and Xu, J.B., "Mechanical Reinforcement While Remaining Electrical Insulation of Glass Fibre/polymer Composites using core-shell CNT@$SiO_2$ Hybrids as Fillers," Composites: Part A, Vol. 73, 2015, pp. 260-268.   DOI
18 Kerner, E.H., "The Elastic and Thermo-elastic Properties of Composite Media," Proceeding of the Physical Society Section B, Vol. 69, 1956, pp. 808-813.   DOI
19 Eshelby, J.D., "The Determination of the Elastic Field of an Ellipsoidal Inclusion, and Related Problems," Proceeding of the Royal Society A, Vol. 241, Issue 1226, 1957.
20 Mori, T., and Tanaka, K., "Average Stress in Matrix and Average Elastic Energy of Materials," Acta Metallurgica, Vol. 21, 1973, pp. 571-574.   DOI