信息技术的高速发展，迫切需要开发高效的吸波材料来解决电磁干扰和电磁污染问题。目前国内外吸波材料在微波S波段（2-4 GHz）吸波性能仍然存在不足，我们借助计算机数值模拟的方法，发现提高复磁导率有助于提升吸波材料S波段的吸收性能。本项目拟利用这个结论选择高复磁导率的稀土钴磁体R2Co17(R= Ce、Pr、Nd、Dy、Y)作为吸波主材料，通过原位化学氧化聚合法在R2Co17表面包覆聚吡咯形成R2Co17/聚吡咯超微胶囊，利用质子化程度可调节的聚吡咯调控其复介电常数，达到复介电常数与复磁导率匹配的目的，以提升微波S波段吸收性能。本项目将研究这种胶囊型复合物的微观结构和形成规律，同时研究不同质子化程度的聚吡咯调控R2Co17高频电磁性能的规律性。根据电磁参数计算吸波强度和吸波带宽，并结合计算机数值模拟手段及电磁波传播理论，深入研究样品吸波机理及吸波规律，为高效吸波材料的研制提供理论依据和指导。

With the fast development of information technology, it is urgent to exploit efficient microwave absorbers for solving the problems of electromagnetic interference and electromagnetic pollution. Currently, the microwave-absorption properties in the S band (2-4 GHz) still have some deficiencies at home and abroad. By the analysis of computer data-simulation, we found that the microwave-absorption properties at S band can be enhanced greatly by increasing the complex permeability. According to the conclusion, we will select rare-earth-Co magnetic alloy R2Co17(R = Ce、Pr、Nd、Dy、Y) with high complex permeability as the main materials of microwave absorption. The rare-earth-Co magnetic alloy will be coated with protonated polypyrole by in-situ chemical oxidative polymerization method, forming R2Co17/polypyrole ultramicro capsules, where the protonated polypyrole is used to modulate the complex permittivity for obtaining matched properties of complex permeability and complex permittivity, and finally enhancing the microwave absorption properties at S band. The microstructure and formed rules of the capsule-type composites will be investigated in this programme. Meanwhile, the modulated rules of protonated polypyrole on the high-frequency electromagnetic properties of R2Co17 will be investigated. The absorption strength and band width will be calculated according to the obtained electromagnetic parameters. Meanwhile, the microwave-absorption mechanism and absorption rules of samples will be investigated deeply by combining with computer data-simulation and the theory of electromagnetic-wave transmission, which will provide theoretical evidence and guidance for developing efficient microwave-absorption materials.