Title :
Degradation properties of the epoxy nanocomposite caused by a gamma-ray irradiation
Author :
Kim, K.Y. ; Im, D.S. ; Choi, J.H. ; Lee, K.Y.
Author_Institution :
Adv. Radiat. Technol. Inst., Korea Atomic Energy Res. Inst., Jeongup, South Korea
Abstract :
This paper describes the degradation properties of bisphenol A type epoxy with a carboxyl-terminated butadiene-acrylonitrile (CTBN) and nano-clay. For evaluation of degradation by radiation, gamma rays of 500 kGy, 1000 kGy, and 1500 kGy were used to irradiate the samples at the dose rate of 8 kGy/hr. The degradation properties of the gamma-ray irradiated samples were measured using a thermogravimetric analyzer (TGA). In the TGA experiment, as the absorption dose increased and the heating rate decreased, the thermogravimetry-derivative thermo gravimetry (TG-DTG) curves of the samples rapidly decreased. As the absorption dose increased, the activation energy of the epoxy decreased sharply, but that of the samples to which clay had been added tended to decrease initially and then increase at 1500 kGy.
Keywords :
clay; gamma-ray effects; heat treatment; nanocomposites; resins; thermal analysis; TGA; absorption dose; activation energy; bisphenol A type epoxy; carboxyl-terminated butadieneacrylonitrile; degradation properties; epoxy nanocomposite; gamma-ray irradiation; heating rate; nanoclay; radiation absorbed dose 1000 kGy; radiation absorbed dose 1500 kGy; radiation absorbed dose 500 kGy; thermogravimetric analysis; thermogravimetry-derivative thermogravimetry curves; Absorption; Degradation; Gamma rays; Heating; Radiation effects; Rubber; Thermal degradation;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena (CEIDP), 2010 Annual Report Conference on
Conference_Location :
West Lafayette, IN
Print_ISBN :
978-1-4244-9468-2
DOI :
10.1109/CEIDP.2010.5724022
