Preparation and Thermal Stability Properties of Epoxy Matrix/Nano-SiO₂ Composites

Abstract:

The addition of nanoparticles has been proven to a high potential application for improving polymer thermal stability properties. In this paper, the nanocomposites based on epoxy matrix modified with different mass ratio of silica nanoparticles were investigated. In order to disperse and incorporate silica nanoparticles into epoxy matrix, silica nanoparticles were modified with coupling agent (Gamma-glycidoxy propyl trimethoxy silan, KH-560). FTIR spectra showed that KH-560 was absorbed on the surface of SiO₂ nanoparticles. The thermo gravimetric traces indicated that the addition of silica nanoparticles has improved the thermal stability properties of epoxy matrix significantly. The decomposition temperature of nanocomposite increased with the addition of nanoSiO₂, and the temperatures of the maximum rate of degradation of the unmodified nanocomposite with 0wt%, 1wt%, 3wt%, 5wt% nanoSiO₂ were 401^oC, 405^oC, 411^oC, 421^oC, respectively. The temperatures for 50% weight loose of the modified nanocomposite with 1wt% and 3wt% nanoSiO₂ were 389^oC and 405^oC, respectively.

• Periodical: Materials Science Forum (Volume 788)
• Pages: 588-592
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.788.588
• Online since: April 2014
• Authors: Qin Lin, Zhen Jiang Song*, Jian Liang Xie
• Keywords: Epoxy Matrix, Nano-SiO₂, Thermal Stability

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