Abstract
Carbon-based fillers have attracted a lot of interest in polymer composites because of their ability to alter beneficial properties at low filler concentrations, good surface bonding with polymers, availability in different forms, etc. Carbon-based materials (such as fullerene, CNTs, graphene, and graphite) have been studied as fillers with enhanced fire resistance to epoxy resins. In order to reduce the flammability and improve the thermal stability of epoxy resin-based nanocomposite materials, which can be achieved by a simultaneous combination of graphene oxide and multiwall carbon nanotubes, the graphite oxide (GO) epoxy nanomaterial was developed by 1% wt.% GO combined with 0.02 wand 0.04 wt.% MWCNT. The homogeneous dispersion of GO and MWCNTs in epoxy resins is supported by ultrasonic vibrations. The results showed that when nanocomposite materials were present at the same time MWCNTs and GO, their mechanical properties and fire resistance were significantly improved. Nanomaterials are characterized by FT-IR spectroscopy and SEM imaging, mechanical strength, and flame retardant properties (LOI, UL94).
Highlights
Graphene oxide (GO) composites are carbon-based materials with excellent performance and low cost
In order to improve the synergistic effect of graphite oxide (GO)/Multiwalled carbon nanotubes (MWCNTs) in epoxy resin, a number of research projects have been conducted to modify the surface of MWCNTs to increase compatibility
The results of this study showed that the combination of 1 wt.% GO and 0.02 wt.% or 0.04 wt.% MWCNTs in the fabrication of epoxy composite materials improved mechanical properties and flame retardation
Summary
Graphene oxide (GO) composites are carbon-based materials with excellent performance and low cost. They are applicable in a wide range of civil, mechanical, and aerospace applications. When 0.5 percent by mass or 1.5 percent by mass is added, the mechanical properties of epoxy composite materials improve. When a small fraction of graphene oxide (GO) was incorporated into epoxy resin (EP), the results showed that GO increased fire resistance, with a limited oxygen index of 24.5%, and resistance tests fire to other standards. Ultrasound is an appropriate method to disperse GO/MWCNTs into epoxy resins, studies have shown that when adding 0.3 or 0.5 wt.% GO, and the mechanical properties of nanocomposites are significantly enhanced by the addition of GO [8, 9]. Bahrami et al fabricated nanocomposite specimens with 0.02, 0.04, 0.06, 0.08, and 0.1 wt.% MWCNTs combined with 1% mass RGO
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