Purpose

The purpose of this paper is to investigate the effect of doping element on the microwave absorption performance of hexagonal nano boron nitride (h-nBN)-reinforced basalt fabric (BF)/epoxy composites. A new type of hybrid composite that will be produced by the use of boron nitride as an additive that leads to increased radar absorption capability will be developed and a new material that can be used in aeronautical radar applications.

Design/methodology/approach

This study is focused on the microwave absorption properties of h-nBN doped basalt fabric-reinforced epoxy composites. Basalt fabric (BF)/epoxy composites (pure composites) and the BF/h-nBN (1 Wt.% h-nBN doped composites) hybrid composites were fabricated by vacuum infusion method. Phase identification of the composites were performed using X-ray diffraction (XRD), the 2θ scan range was from 10 to 60 with the scanning speed of 3°/min and surface morphologies of the composites were investigated using scanning electron microscopy (SEM). Microwave properties of samples were investigated through transmission/reflection measurements in Agilent brand 2-Port PNA-L Network Analyzer in the frequency range of 3–18 GHz. The prepared sample is positioned between two horn antennas with and without metal plate.

Findings

Experimental results show that h-nBN doped composite was synthesized successfully and the produced hexagonal nano boron nitride-added fiber laminated composite material has good absorption behavior when they are used with metallic sheets and good for isolation applications at many points in the 3–18 GHz band.

Originality/value

This paper will contribute to the literature on the use of basalt fabric, which are new types of fibers, and hexagonal nano boron nitride and the effects of boron nitride on radar absorption properties of composite material. It presents detail characterization of each composite by using XRD and scanning electron microscopy.

中文翻译：

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六方纳米氮化硼掺杂玄武岩织物增强环氧复合材料的微波吸收性能

目的

本文的目的是研究掺杂元素对六方纳米氮化硼（h-nBN）增强玄武岩织物（BF）/环氧树脂复合材料的微波吸收性能的影响。将开发一种新型混合复合材料，该复合材料将通过使用氮化硼作为添加剂来生产，从而提高雷达的吸收能力，并且将开发一种可用于航空雷达应用的新型材料。

设计/方法/方法

这项研究的重点是h-nBN掺杂的玄武岩纤维增强环氧复合材料的微波吸收性能。采用真空灌注法制备了玄武岩织物（BF）/环氧树脂复合材料（纯复合材料）和BF / h-nBN（1重量％h-nBN掺杂复合材料）复合材料。使用X射线衍射（XRD）进行复合材料的相鉴定，2θ扫描范围为10至60，扫描速度为3°/ min，并使用扫描电子显微镜（SEM）研究复合材料的表面形态。通过在3-18 GHz频率范围内的Agilent品牌2端口PNA-L网络分析仪中的透射/反射测量，研究了样品的微波特性。将准备好的样品放置在两个带金属板和不带金属板的号角天线之间。

发现

实验结果表明，成功合成了h-nBN掺杂的复合材料，所制得的六角形纳米氮化硼复合纤维叠层复合材料与金属板一起使用时具有良好的吸收性能，并在3–18 GHz的多个点上具有良好的隔离性乐队。

创意/价值

本文将为新型纤维玄武岩纤维和六角形纳米氮化硼的应用以及氮化硼对复合材料雷达吸收性能的影响提供文献资料。它通过使用XRD和扫描电子显微镜对每种复合材料进行详细表征。