微波与物质相互作用加热机理的理论研究

Theoretical Study on Heating Mechanisms of Interaction between Microwave and Materials

微波技术广泛用于无线通信、材料处理和材料介电常数测量等领域.微波处理材料的优点是传热快、体积加热和选择性加热、无环境污染和容易自动控制.本文讨论了微波与物质相互作用时的加热机理.对于non-Debye弛豫介质,导出了其介质损耗的计算模型.更重要的是,此模型甚至可用于解释微波辐照下材料发生的瞬态过程.

Microwave techniques are nowadays widely used throughout wireless communication, material processing and material permittivity measuring. The major advantages of microwave used for material processing are rapid heat transfer, volumetric heating and selective heating, poLlution - free environment and automatic control. The heating mechanisms on interaction of microwave with materials is discussed in this paper. For non - Dehye relaxation materials, a model is deduced to calculate the dielectric loss. More importantly, the model can even he used to explain the transient process occurring under microwave irradiation.