title: A novel fabrication of a high performance SiO(2)-graphene oxide (GO) nanohybrids: Characterization of thermal properties of epoxy nanocomposites filled with SiO(2)-GO nanohybrids.
abstract: 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 SiO2nanoparticles 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.
authors.affiliation: Institute of Nano Science and Technology, Kashan University, PO 9231530201, Tehran, Iran.
authors.forename: S Z
authors.initials: SZ
authors.lastname: Haeri
authors.affiliation: Department of Surface Coatings and Corrosion, Institute for Color Science and Technology (ICST), PO 16765-654, Tehran, Iran. Electronic address: ramezanzadeh-bh@icrc.ac.ir.
authors.forename: B
authors.initials: B
authors.lastname: Ramezanzadeh
authors.affiliation: Separation Processes Research Group (SPRG), Department of Engineering, University of Kashan, Kashan, Iran; Energy Research Institute, University of Kashan, Ghotb-e-Ravandi Ave., Kashan, Iran.
authors.forename: M
authors.initials: M
authors.lastname: Asghari
keywords: A. Polymer-matrix composites (PMCs); B. Thermal properties; C. Atomic force microscopy (AFM); C. Dynamic mechanical thermal analysis (DMTA); C. Thermogravimetric analysis (TGA)