A novel fabrication of a high performance SiO2-graphene oxide (GO) nanohybrids: Characterization of thermal properties of epoxy nanocomposites filled with SiO2-GO nanohybrids

• Published in: Journal of colloid and interface science 2017-05, Vol.493, p.111-122
• Main Authors: Haeri, S.Z., Ramezanzadeh, B., Asghari, M.
• Format: Article
• Language: English
• Subjects: A. Polymer-matrix composites (PMCs); B. Thermal properties; C. Atomic force microscopy (AFM); C. Dynamic mechanical thermal analysis (DMTA); C. Thermogravimetric analysis (TGA)
• ISSN: 0021-9797; 1095-7103
• DOI: 10.1016/j.jcis.2017.01.016

[Display omitted] In this study it has been aimed to enhance the thermal resistance of epoxy coating through incorporation of SiO2-GO nanohybrids. SiO2-GO nanohybrids were synthesized through one-step sol-gel route using a mixture of Tetraethylorthosilane (TEOS) and 3-Aminopropyl triethoxysilane (APTES) silanes. The SiO2-GO nanohybrids were prepared at various hydrolysis times of 24, 48 and 72h. Then 0.2wt.% of GO and SiO2-GO nanohybrids were separately incorporated into the epoxy coating. Results revealed that amino functionalized SiO2 nanoparticles with particle size around 20–30nm successfully synthesized on the basal plane of GO. Results showed significant improvement of dispersion and interfacial interactions between nanohybrids and epoxy composite arising from covalent bonding between the SiO2-GO and the epoxy matrix. It was found that the thermal resistance of SiO2-GO nanohybrids and SiO2-GO/Epoxy nanocomposite was noticeably higher than GO and epoxy matrix, respectively.