传统的水泥基吸波材料成型后吸波特性固定不变，难以满足现代电磁屏蔽和防电磁探测的需求。基于微波耗散理论，申请人提出了通过负载Fe3O4磁性液体的碳纤维在水泥硬化体中形成网络，并构建水泥基体的孔和层结构，辅以电、磁场进行调控，实现对不同频率波段电磁波吸波和调控的思路。本项目拟开展碳纤维负载Fe3O4磁性液体的制备及吸波性能，多孔材料负载Fe3O4磁性液体的吸波性能，电场和磁场对复合吸波材料微结构和电磁参数调控，调制型水泥基吸波材料的结构设计与制备，以及力学性能、耐久性和吸波性能的经时变化及外部环境因素对吸波性能的影响等方面的研究工作，阐明电场和磁场作用下水泥基胶凝材料体系与吸波材料协同作用机制及其调控吸波性能的原理。项目的研究为设计和制备具有电磁参数可调控的水泥基吸波材料提供理论指导。

The wave absorbing characteristic of traditional wave absorbing materials can not be changed anymore once the materials are generated, making them hardly satisfy the requirements of electromagnetic shielding and anti-electromagnetic detection. Based on microwave dissipation theory, carbon fiber carrying Fe3O4 magnetic liquid, forming network and shaping the pore and layer structures in cementitious materials, will be applied to absorb electromagnetic wave of various frequency with assistance of the regulation by electronic and magnetic field. The preparation of carbon fiber and porous materials carrying Fe3O4 magnetic liquid and their capacity of electromagnetic wave absorbing will be investigated. The regulation on the microstructure and electromagnetic properties of the wave absorbing materials by electronic and magnetic field will be explored. After that mechanical properties, durability and capacity of electromagnetic wave absorbing of the cementitious materials with carbon fiber and porous materials carrying Fe3O4 magnetic liquid will be tested. In this way, the mechanisms of the cooperation between cementitious materials and wave absorbing materials, and the regulation to optimize the wave absorption property will be clarified, which will give guidance to design and prepare a wave absorbing cementitious material of which the absorbing characteristic can be controlled.