A method for the evaluation of electromagnetic wave absorption potential using surface temperature change under microwave irradiation

Absorption behavior of electromagnetic wave by spherical H2O-filled SiO2 shell microcapsuledispersed paraffin matrix composites is evaluated using a microwave heating and thermographic system. The composites under microwave irradiation show temperature change at the specimen surface. The temperature rises as an increase of a volume fraction of H2O and the absorption of electromagnetic wave is strongly correlated with the temperature rise.