阻抗渐变纳米复合材料制备及电磁波趋深吸收性能研究

项目名称： 阻抗渐变纳米复合材料制备及电磁波趋深吸收性能研究

项目编号： No.51271044

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 一般工业技术

项目作者： 董星龙

作者单位： 大连理工大学

项目金额： 80万元

中文摘要： 兼具电磁波吸收性能和力学强度的功能/结构一体化树脂基复合材料，具有重要的理论研究和工程应用价值。本项目拟以核/壳型磁性/介电纳米复合粒子作为微波吸收剂，梯度填充到PBO-C纤维增强树脂基体中，形成由透波层、浅吸收层到深吸收层构成的阻抗渐变趋深吸收结构，实现树脂基纳米复合材料的全波段微波吸收功能和承载强度。着重研究梯度分布纳米粒子吸收剂的电磁波响应特性，异类纳米吸收剂的复合及其协同作用，建立复合材料结构与吸波性能的构效关系。解决纳米粒子表面改性及分散、多种单元界面作用及复合过程中的材料科学问题。探索微观结构、电磁参数与吸波性能之间的内在关联，发现电磁波能量趋深吸收及损耗的主导机制。本项目提出的通过异质多层纤维增强复合材料实现阻抗渐变型微波吸收体的设计思想，在结构和性能双向可控的基础上，将大大提升其综合性能和应用价值，降低传统功能涂层的呆重负载，提供功能/结构一体化设计的理论依据和实验基础。

中文关键词： 纳米粒子；核/壳型；电磁波吸收；功能/结构一体化；阻抗渐变

英文摘要： It's significant in theoretial investigation and pratical application on the resin composites with dual abilities of the electromagnetic absorption and mechnical strength. In this project, core/shell-type nanoparticles acted as the microwave absorbers, will be dispersed in PBO-C fiber reinforced resincomposites to form a laminate structure with transmission / weak-absorption / strong-absorption layers, which has a gradient impedance change and both functions of microwave absorption and necessary loading capacity. It is emphasized on the electromagnetic properties of these gradually distributed nanoparticles, the synergism between different units, and the intrinsic relations between structures and performances. The activities are mainly devoted to the surface modification and dispersion of nanoparticles, and the interface effects on the selected components. Investigation on correlations among the microstructures, electromagnetic parameters and absorption performance, as well as the dominant mechanism on gradual loss and absorption of electromagnetic wave, will be conducted in this project. Such a plan for the laminate composite absorber, would greatly improve the integrated performances and merits in practical applications by controlling the structures and properties, would result in the reduced weight comparin

英文关键词： Nanoparticles；Core/Shell type；Electromagnetic wave absorption；Function/Strength integrated composite；Gradient impedance