Thermal, tensile and morphological properties of gamma-ray irradiated epoxy-clay nanocomposites toughened with a liquid rubber

摘要: Abstract This paper describes the process of mixing carboxyl-terminated butadiene-acrylonitrile (CTBN) with nano-clay to improve toughness and mechanical strength bisphenol A type epoxy, which tends exhibit brittle fracture behavior. For evaluation degradation by radiation, gamma rays 500 kGy, 1000 kGy, 1500 kGy were used irradiate samples at a dose rate 8 kGy/hr. The molecular structure changes, inter-layer distance clay, morphology, radiation behavior epoxy CTBN gamma-ray irradiated measured using Fourier transform infrared spectrometer (FTIR), X-ray diffractometer (XRD), thermogravimetric analyzer (TGA), tensile machine field emission scanning electron microscope (FESEM). FTIR results verified band stretching –CN C O bonding in from spectra CTBN-modified epoxies. XRD easy intercalation clay added CTBN. In TGA experiment, as absorption increased heating decreased, thermogravimetry-derivative thermogravimetry (TG–DTG) curves rapidly decreased. As increased, strengths all degraded sharply morphologies, rubber particles fractured rays, observed FESEM.