新型介电与磁性可调纳米胶囊的高频电磁性能优化与宽频强吸收机理研究

以复合吸波材料电磁参数为基础，采用大数据分析原理，优选不同频率下的电磁参数组合作为优化起点，利用传输线理论得到优化的电磁参数值域。构建介电/软磁纳米胶囊作为实验模型，围绕电磁参数调控这一核心问题，通过外壳与内核的结构与物相调控，使实验模型电磁参数达到优化的值域。通过反射损耗计算与实测，验证优化纳米胶囊吸波效果的正确性与合理性，以此为基础进一步优化实验模型，使之成为最佳的宽频强吸波材料。找到介电常数与磁导率能共同达到优化值域范围的调控规律，理解介电损耗机制（介电弛豫与介电共振）与磁损耗机制（自然共振与交换共振）能在1-18GHz范围内实现强吸收的匹配规律，以此为基础建立具有宽频强吸收复合吸波材料的物理结构模型以及动态吸波物理图像，为开发更多新型复合吸波材料提供实验支撑与理论指导。

Based on the electromagnetic parameters of the composite absorbing materials and big data analysis technique, the electromagnetic parameters at different frequencies was chosen for the starting point for optimization. Constructing dielectric soft magnetic nanocapsules as an experimental model, focusing on the core problem of electromagnetic parameter control, through the structure and phase control of the shell and core, the electromagnetic parameters of the experimental model can be optimized to the optimized data range from the theoretical calculation. Based on the calculation and measurement of reflection loss, the correctness and rationality of the optimization of nanocapsule absorbing effect is verified. According to it, we further optimize the experimental model and make it the best broadband strong absorbing material. Find the dielectric constant and permeability can reach a common optimization regulation range, understand the dielectric loss mechanism (dielectric relaxation and dielectric loss and magnetic resonance) mechanism (natural resonance and exchange resonance) can realize the matching law of strong absorption in the range of 1-18GHz, in order to establish a broadband strong absorption absorbing composite physical structure model of microwave absorption material and dynamic absorbing physical image basis for the development of more new composite absorbing materials to provide guidance for the experimental and theoretical support.