Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ferrite composite wave-absorbing agent and preparation method and application thereof
The invention discloses a ferrite composite wave-absorbing agent and a preparation method and application thereof. The ferrite composite wave-absorbing agent is composed of a ferrite magnetic base core and a carbon shell coating layer, and the mass ratio of ferrite to carbon is 1: (5-7). According to the ferrite composite wave-absorbing agent, the carbon shell coating layer can adjust the electromagnetic characteristics of ferrite and improve the impedance matching performance of the composite wave-absorbing agent; and meanwhile, when electromagnetic waves act on the carbon coating layer, dielectric loss and magnetic loss are generated, and the wave absorbing performance of the composite absorbent is further enhanced. The preparation method of the ferrite wave-absorbing agent is easy to control in process condition, simple to operate and low in production cost. A ferrite wave-absorbing material prepared from the ferrite composite wave-absorbing agent has the characteristics of strong wave absorption, low density and broadband, the surface density of the composite wave-absorbing material is within 1.5kg/m<2>, the absorption strength is good, and a reflectivity test result shows thatthe bandwidth of -10dB (90% absorption) is greater than 3.45GHz.
本文公开了一种铁氧体复合吸波剂及其制备方法与应用，由铁氧体磁性基核和碳壳包覆层组成，所述铁氧体和碳的质量比为1：(5~7)。本发明铁氧体复合吸波剂，碳壳包覆层可以调节铁氧体电磁特性，改善复合吸波剂阻抗匹配性能；同时当电磁波作用在碳包覆层时，将产生介电损耗和磁损耗，进一步增强了复合吸收剂吸波性能；本发明铁氧体吸波剂的制备方法，工艺条件易控，操作简便，生产成本低，本发明利用铁氧体复合吸波剂制备得到的铁氧体吸波材料具有强吸波、低密度、宽频的特性，复合吸波材料的面密度在1.5kg/m以内，其吸收强度好，反射率测试结果表明‑10dB（90%吸收）的频宽大于3.45GHz。
Ferrite composite wave-absorbing agent and preparation method and application thereof
The invention discloses a ferrite composite wave-absorbing agent and a preparation method and application thereof. The ferrite composite wave-absorbing agent is composed of a ferrite magnetic base core and a carbon shell coating layer, and the mass ratio of ferrite to carbon is 1: (5-7). According to the ferrite composite wave-absorbing agent, the carbon shell coating layer can adjust the electromagnetic characteristics of ferrite and improve the impedance matching performance of the composite wave-absorbing agent; and meanwhile, when electromagnetic waves act on the carbon coating layer, dielectric loss and magnetic loss are generated, and the wave absorbing performance of the composite absorbent is further enhanced. The preparation method of the ferrite wave-absorbing agent is easy to control in process condition, simple to operate and low in production cost. A ferrite wave-absorbing material prepared from the ferrite composite wave-absorbing agent has the characteristics of strong wave absorption, low density and broadband, the surface density of the composite wave-absorbing material is within 1.5kg/m<2>, the absorption strength is good, and a reflectivity test result shows thatthe bandwidth of -10dB (90% absorption) is greater than 3.45GHz.
本文公开了一种铁氧体复合吸波剂及其制备方法与应用，由铁氧体磁性基核和碳壳包覆层组成，所述铁氧体和碳的质量比为1：(5~7)。本发明铁氧体复合吸波剂，碳壳包覆层可以调节铁氧体电磁特性，改善复合吸波剂阻抗匹配性能；同时当电磁波作用在碳包覆层时，将产生介电损耗和磁损耗，进一步增强了复合吸收剂吸波性能；本发明铁氧体吸波剂的制备方法，工艺条件易控，操作简便，生产成本低，本发明利用铁氧体复合吸波剂制备得到的铁氧体吸波材料具有强吸波、低密度、宽频的特性，复合吸波材料的面密度在1.5kg/m以内，其吸收强度好，反射率测试结果表明‑10dB（90%吸收）的频宽大于3.45GHz。
Ferrite composite wave-absorbing agent and preparation method and application thereof
一种铁氧体复合吸波剂及其制备方法与应用
SHAN DONGYONG (Autor:in) / CAO KE (Autor:in) / CHENG SHULIN (Autor:in) / HU QINGYUAN (Autor:in)
15.05.2020
Patent
Elektronische Ressource
Chinesisch
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