磁性木材的制备及其性能研究概况
摘要
电磁干扰（EMI）的屏蔽和吸收是近几年来的研究热点。其中，四氧化三铁作为一种典型的磁介质材料，具有磁损耗和介电损耗两大特点，是最具吸引力的微波吸收材料之一。但是，由于Fe3O4材料的吸收带宽窄、厚度大、密度高，限制了其实际应用。因此，设计一种环境友好的制备Fe3O4吸波材料的方法，具有重量轻、厚度薄、衰减能力强等特点，是迫切需要的。一种有效的方法是利用两种成分之间的协同效应，将磁性材料与轻质介电材料结合制备的磁性木材具有很强的磁性和波吸收功能。此外，这种磁性木材还具有木材纹理和低比重，非常易于加工的优点。同时也有力学性能差这一缺点，因此增强木材力学性能也是本研究重点。
关键词：电磁吸收；吸波材料；磁性木材；
Research on Preparation and properties of magnetic wood
ABSTRACT
The shielding and absorption of electromagnetic interference (EMI) is a research hotspot in recent years. Among them, as a typical magnetic medium material, Fe3O4 has two characteristics: magnetic loss and dielectric loss, and is one of the most attractive microwave absorbing materials. However, the practical application of Fe3O4 material is limited because of its narrow absorption bandwidth, large thickness and high density. Therefore, it is urgent to design an environmentally friendly method for preparing Fe3O4 absorbing materials, which has the characteristics of light weight, thin thickness and strong attenuation ability. An effective method is to utilize the synergistic effect between the two components, and the magnetic wood prepared by combining magnetic materials with light dielectric materials has strong magnetic and wave absorption functions. In addition, this kind of magnetic wood has the advantages of wood texture and low specific gravity, and is very easy to process. At the same time, it has the disadvantage of poor mechanical properties, so strengthening wood mechanical properties is also the focus of this study.
Key words: Electromagnetic Absorption; Microwave Absorbing Materials; Magnetic Wood;
1磁性木材的研究概况
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