naa a22 4500 510801021 CHVBK 20180411083355.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11664-013-2525-z doi (NATIONALLICENCE)springer-10.1007/s11664-013-2525-z A Kinetics Study on Electrical Resistivity Transition of In Situ Polymer Aging Sensors Based on Carbon-Black-Filled Epoxy Conductive Polymeric Composites (CPCs) [Elektronische Daten] [Qizhen Liang, Mark Nyugen, Kyoung-Sik Moon, Ken Watkins, Lilian Morato, Ching Wong] Sensors based on carbon-black-filled bisphenolA-type epoxy conductive polymeric composites (CPCs) have been prepared and applied to monitor thermal oxidation aging of polymeric materials. Thermogravimetric analysis (TGA) is applied to characterize weight loss of epoxy resin in the aging process. By using a mathematical model based on the Boltzmann equation, a relationship between the electrical resistivity of the sensors based on epoxy/carbon black composites and aging time is established, making it possible to monitor and estimate the aging status of polymeric components insitu based on a fast and convenient electrical resistance measurement. TMS, 2013 Conductive polymeric composite nationallicence degradation nationallicence in situ sensors nationallicence electrical resistivity nationallicence Boltzmann equation nationallicence p c : Percolation threshold nationallicence C : Relative weight of epoxy resin matrix nationallicence W : Real-time weight of epoxy resin nationallicence W 0 : Initial weight of epoxy resin nationallicence t : Aging time nationallicence k : Reaction constant nationallicence n : Exponent in power equation for weight of epoxy resin nationallicence E a : Activation energy in degradation of epoxy resin nationallicence T : Aging temperature nationallicence R : Gas constant nationallicence ρ : Electrical resistivity of CPCs nationallicence ρ 0 : Initial electrical resistivity of CPCs nationallicence ρ ∞ : Electrical resistivity of CPCs with infinite aging time nationallicence x : Weight ratio of carbon black nationallicence α : Exponent in electrical resistance alteration around percolation in Liang's theory13 nationallicence t c : Induction time, corresponding to aging time needed for a change of logρ from logρ 0 to $$ \left(\log \rho_{0}+\log \rho_{\infty}\right)/2$$ nationallicence Δ t : A constant in the Boltzmann equation nationallicence Liang Qizhen School of Materials Science & Engineering, Georgia Institute of Technology, 771 Ferst Dr, 30332, Atlanta, GA, USA aut Nyugen Mark School of Materials Science & Engineering, Georgia Institute of Technology, 771 Ferst Dr, 30332, Atlanta, GA, USA aut Moon Kyoung-Sik School of Materials Science & Engineering, Georgia Institute of Technology, 771 Ferst Dr, 30332, Atlanta, GA, USA aut Watkins Ken Polymer Aging Concepts Inc., 30533, Dahlonega, GA, USA aut Morato Lilian Faculty of Engineering, The Chinese University of Hong Kong, Shatin, NT, Hong Kong aut Wong Ching School of Materials Science & Engineering, Georgia Institute of Technology, 771 Ferst Dr, 30332, Atlanta, GA, USA aut Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/6(2013-06-01), 1114-1121 0361-5235 42:6<1114 2013 42 11664 https://doi.org/10.1007/s11664-013-2525-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-013-2525-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liang Qizhen School of Materials Science & Engineering, Georgia Institute of Technology, 771 Ferst Dr, 30332, Atlanta, GA, USA aut NATIONALLICENCE 700 1- Nyugen Mark School of Materials Science & Engineering, Georgia Institute of Technology, 771 Ferst Dr, 30332, Atlanta, GA, USA aut NATIONALLICENCE 700 1- Moon Kyoung-Sik School of Materials Science & Engineering, Georgia Institute of Technology, 771 Ferst Dr, 30332, Atlanta, GA, USA aut NATIONALLICENCE 700 1- Watkins Ken Polymer Aging Concepts Inc., 30533, Dahlonega, GA, USA aut NATIONALLICENCE 700 1- Morato Lilian Faculty of Engineering, The Chinese University of Hong Kong, Shatin, NT, Hong Kong aut NATIONALLICENCE 700 1- Wong Ching School of Materials Science & Engineering, Georgia Institute of Technology, 771 Ferst Dr, 30332, Atlanta, GA, USA aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/6(2013-06-01), 1114-1121 0361-5235 42:6<1114 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer