Dynamic Mechanical Analysis of Nanosilica Filled Epoxy Nanocomposites

Abstract:

In this study, Dynamic Mechanical Analyzer (DMA) was used to study the effect of nanoparticles, which is nanosilica, on glass transition temperature (Tg) of epoxy polymer. A series of epoxy based nanosilica composite with 5-25 wt% nanosilica content was prepared using mechanical stirring method. The weight fractions of nanosilica in epoxy were 5 wt%, 13 wt% and 25 wt%. 30mm x 10mm x 3mm size specimens were tested using DMA machine from room temperature up to 180oC at 2°C/min heating rate. From the analysis of the results, dynamic modulus and glass transition temperature of pure polymer and nanosilica filled polymer were obtained. The glass transition of a polymer composite is a temperature-induced change in the matrix material from the glassy to the rubbery state during heating or cooling. Glass transition temperature Tg was determined using several method: storage modulus onset, loss modulus peak, and tan δ peak. The results showed that the presence of nanosilica reduced Tg of epoxy polymer.

• Periodical: Applied Mechanics and Materials (Volume 699)
• Pages: 239-244
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.699.239
• Online since: November 2014
• Authors: Nurhidayah R. Zamani, Aidah Jumahat*, Rosnadiah Bahsan
• Keywords: Dynamic Mechanical Analysis, Epoxy Resin, Glass Transition Temperature, Nanosilica, Storage Modulus

References

[1] J.B. Donnet, Nano and microcomposites of polymers elastomers and their reinforcement, Compos Sci Technol, 63 (2003) 1085-1088.

DOI: 10.1016/s0266-3538(03)00028-9

[2] A. Jumahat, C. Soutis, FR Jones, A Hodzic, Effect of silica nanoparticles on compressive properties of an epoxy polymer, J. Materials Science, (2010) 5973-5983.

DOI: 10.1007/s10853-010-4683-1

[3] F. Hussain, M. Hojjati, M. Okamoto, R.E. Gorga, Review article: Polymar-matrix nanocomposites, processing, manufacturing and application: An overview, J. Composite Materials, 40-17 (2006) 1511-1575.

DOI: 10.1177/0021998306067321

[4] A. Yasmin, JJ. Luo, JL. Abot, IM. Daniel, Processing of expanded graphite reinforced polymer nanocomposites, J. Composites Science and Technology, 66 (2006) 2415–2422.

DOI: 10.1016/j.compscitech.2005.10.014

[5] T.H. Hsieh, A.J. Kinloch, K. Masania, A.C. Taylor, S. Sprenger, The mechanism and mechanics of the toughening of epoxy polymers modified with silica nanoparticles, J. Polymer 55 (2010) 6284-6294.

DOI: 10.1016/j.polymer.2010.10.048

[6] H. Zhang, Z. Zhang, K. Friedrich, C. Eger, Property improvements of in situ epoxy nanocomposites with reduced interparticle distance at high nanosilica content, Acta Mater 54-7 (2006) 1833-42.

DOI: 10.1016/j.actamat.2005.12.009

[7] R.D. Brooker, A.J. Kinloch, A.C. Taylor, The morphology and fracture properties of thermoplastic-toughened epoxy polymer, J. Adhension 86-7 (2010) 726-41.

DOI: 10.1080/00218464.2010.482415

[8] Y. L Liang, R. A Pearson, Toughening mechanisms in epoxy-silica nanocomposites (ESNs), J. Polymer 50-20 (2009) 4895-905.

DOI: 10.1016/j.polymer.2009.08.014

[9] J. Baller, N. Becker, M. Ziehmer, M. Thomassey, B. Zielinski, U. Muller, Et al., Interactions between silica nanoparticles and a epoxy resin before and during network formation, J. Polymer 50-14 (2009) 4895-4905.

DOI: 10.1016/j.polymer.2009.05.020

[10] A. Jumahat, C. Soutis, FR Jones, A. Hodzic, Effect of silica nanoparticles on compressive properties of an epoxy polymer, J. Materials Science, 45-21 (2010) 5973-5983.

DOI: 10.1007/s10853-010-4683-1

[11] A. Ali, E. Morteza, J. Hadi, A. Shervin, The effect of nanosilica on mechanical, thermal and morphological properties of epoxy coating, Progress in organic coating, 75 (2012) 543-48.

DOI: 10.1016/j.porgcoat.2012.05.013

[12] B. B. Johnsen., A. J. Kinloch., R.D. Mohammed, A.C. Taylor, S. Springer, Toughening mechanisms of nanoparticles-modified epoxy polymers, J. Polymer, 48 (2007) 530-41.

DOI: 10.1016/j.polymer.2006.11.038

[13] S. Zainuddin, M.V. Hosura, Y. Zhoua, Experimental and numerical investigations on flextural and thermal properties of nanoclay-epoxy nanocomposites, Elsevier Mater Sci Eng, A527 (2010) 7920-26.