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http://dx.doi.org/10.7234/composres.2017.30.3.181

Comparison of Heating Behavior of Various Susceptor-embedded Thermoplastic Polyurethane Adhesive Films via Induction Heating  

Kwon, Yongsung (Department of Industrial Chemistry, Pukyong National University)
Bae, Duckhwan (Department of Industrial Chemistry, Pukyong National University)
Shon, MinYoung (Department of Industrial Chemistry, Pukyong National University)
Publication Information
Composites Research / v.30, no.3, 2017 , pp. 181-187 More about this Journal
Abstract
The effect of nanoscopic and microscopic Fe, $Fe_3O_4$, and Ni particles and their shapes and substrate materials on the heating behavior of thermoplastic polyurethane (TPU) adhesive films was investigated via induction heating. The heat generation tendency of $Fe_3O_4$ particles was higher than that shown by Fe and Ni particles in the TPU adhesive films. When the Fe and Ni particle size was larger than the penetration skin depth, the initial heating rate and maximum temperature increased with an increase in the particle size. This is attributed to the eddy current heat loss. The heating behavior of the TPU films with Ni particles of different shapes was examined, and different hysteresis heat losses were observed depending on the particle shape. Consequently, the flake-shaped Ni particles showed the most favorable heat generation because of the largest hysteresis loss. The substrate materials also affected the heating behavior of the TPU adhesive films in an induction heating system, and the thermal conductivity of the substrate materials was determined to be the main factor affecting the heating behavior.
Keywords
Induction heating; Iron; Magnetite; Nickel; Polyurethane; Hysteresis;
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