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http://dx.doi.org/10.7234/composres.2017.30.2.138

Interfacial Evaluation and Microfailure Sensing of Nanocomposites by Electrical Resistance Measurements and Wettability  

Park, Joung-Man (Department of Materials Engineering and Convergence Technology, Center for Creative Human Resource & Convergence Materials, Research Institute for Green Energy Convergence Technology, Gyeongsang National University)
Kwon, Dong-Jun (Department of Materials Engineering and Convergence Technology, Research Institute for Green Energy Convergence Technology, Gyeongsang National University)
Shin, Pyeong-Su (Department of Materials Engineering and Convergence Technology, Center for Creative Human Resource & Convergence Materials, Gyeongsang National University)
Kim, Jong-Hyun (Department of Materials Engineering and Convergence Technology, Center for Creative Human Resource & Convergence Materials, Gyeongsang National University)
Baek, Yeong-Min (Department of Materials Engineering and Convergence Technology, Center for Creative Human Resource & Convergence Materials, Gyeongsang National University)
Park, Ha-Seung (Department of Materials Engineering and Convergence Technology, Center for Creative Human Resource & Convergence Materials, Gyeongsang National University)
Publication Information
Composites Research / v.30, no.2, 2017 , pp. 138-144 More about this Journal
Abstract
Damage sensing of polymer composite films consisting of poly(dicyclopentadiene) p-DCPD and carbon nanotube (CNT) was studied experimentally. Only up to 1st ring-opening polymerization occurred with the addition of CNT, which made the modified film electrically conductive, while interfering with polymerization. The interfacial adhesion of composite films with varying CNT concentration was evaluated by measuring the wettability using the static contact angle method. 0.5 wt% CNT/p-DCPD was determined to be the optimal condition via electrical dispersion method and tensile test. Dynamic fatigue test was conducted to evaluate the durability of the films by measuring the change in electrical resistance. For the initial three cycles, the change in electrical resistance pattern was similar to the tensile stress-strain curve. The CNT/p-DCPD film was attached to an epoxy matrix to demonstrate its utilization as a sensor for fracture behavior. At the onset of epoxy fracture, electrical resistance showed a drastic increase, which indicated adhesive fracture between sensor and matrix. It leads to prediction of crack and fracture of matrix.
Keywords
CNT; p-DCPD; Damage sensing; Sensor;
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Times Cited By KSCI : 4  (Citation Analysis)
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