| 초록 |
Carbon nanotube (CNT) composites are ideal materials for electric heating (E-heating) applications owing to their lightweight, rapid heating ability, and easy processability for microscale patterns. However, thermal degradation of CNT composites as a result of E-heating was found to be much more severe than air convection heating (C-heating). Enhanced mechanical properties of CNT composite were observed after C-heating, while E-heating composites became fragile that the matrix was severely damaged at the same temperature/hours. Consequently, the resistance of the CNT composite for E-heating was dramatically increased. To avoid thermal degradation and a dramatic increase in resistance, the E-heating temperature should be much lower than the temperature limit of thermally stable polymer. In addition, thermal degradation of the polymer matrix could be relieved through the addition of CNTs, which can be understood as parallel resistor model, by spreading thermal concentration throughout the polymer matrix. |
