具有宽带微波吸收性能的MWCNTs/SiC纳米复合材料的点击化学法制备及性能研究
O69; 多壁碳纳米管/碳化硅(MWCNTs/SiC)纳米复合材料,以电阻型微波吸收剂MWCNTs为基体材料,电介质型微波吸收剂碳化硅作为损耗介质通过点击反应制备.采用XRD,IR,XPS,TG,SEM,矢量网络分析仪进行该复合材料的结构表征和微波吸收性能测试.此外还探讨了不同投料比,对复合材料的微波吸收性能的影响.实验结果表明:MWCNTs/SiC二元纳米复合材料由点击法成功制备;当投料的质量比MWCNTs:SiC=1:1时,MWCNTs/SiC二元纳米复合材料在2.0 mm的厚度下,其最小反射损耗(RLmin)达到了-44.96 dB,在1.5 mm的超薄厚度下有效吸收的最宽带宽(RL&l...
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| Published in | 功能材料 Vol. 54; no. 5; pp. 5160 - 5177 |
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| Main Authors | , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
安徽理工大学 化学工程学院,安徽 淮南 232001
30.05.2023
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-9731 |
| DOI | 10.3969/j.issn.1001-9731.2023.05.021 |
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| Abstract | O69; 多壁碳纳米管/碳化硅(MWCNTs/SiC)纳米复合材料,以电阻型微波吸收剂MWCNTs为基体材料,电介质型微波吸收剂碳化硅作为损耗介质通过点击反应制备.采用XRD,IR,XPS,TG,SEM,矢量网络分析仪进行该复合材料的结构表征和微波吸收性能测试.此外还探讨了不同投料比,对复合材料的微波吸收性能的影响.实验结果表明:MWCNTs/SiC二元纳米复合材料由点击法成功制备;当投料的质量比MWCNTs:SiC=1:1时,MWCNTs/SiC二元纳米复合材料在2.0 mm的厚度下,其最小反射损耗(RLmin)达到了-44.96 dB,在1.5 mm的超薄厚度下有效吸收的最宽带宽(RL<-10 dB)达到5.04 GHz(从12.66～17.93 GHz,覆盖了Ku波段的87.8％);此外,MWCNTs/SiC二元纳米复合材料可以在整个X波段有效吸收电磁波,厚度范围为2.0～2.5 mm.并且,通过调整吸收层的厚度,几乎可以有效覆盖所有的C、X和Ku波段.MWCNTs和SiC之间通过点击反应以共价键连接,分子内部形成导电通道,产生足够的载流子,在外加电场的作用下产生感应电流,也可以衰减电磁波,从而增强对电磁波能量的消耗. |
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| AbstractList | O69; 多壁碳纳米管/碳化硅(MWCNTs/SiC)纳米复合材料,以电阻型微波吸收剂MWCNTs为基体材料,电介质型微波吸收剂碳化硅作为损耗介质通过点击反应制备.采用XRD,IR,XPS,TG,SEM,矢量网络分析仪进行该复合材料的结构表征和微波吸收性能测试.此外还探讨了不同投料比,对复合材料的微波吸收性能的影响.实验结果表明:MWCNTs/SiC二元纳米复合材料由点击法成功制备;当投料的质量比MWCNTs:SiC=1:1时,MWCNTs/SiC二元纳米复合材料在2.0 mm的厚度下,其最小反射损耗(RLmin)达到了-44.96 dB,在1.5 mm的超薄厚度下有效吸收的最宽带宽(RL<-10 dB)达到5.04 GHz(从12.66～17.93 GHz,覆盖了Ku波段的87.8％);此外,MWCNTs/SiC二元纳米复合材料可以在整个X波段有效吸收电磁波,厚度范围为2.0～2.5 mm.并且,通过调整吸收层的厚度,几乎可以有效覆盖所有的C、X和Ku波段.MWCNTs和SiC之间通过点击反应以共价键连接,分子内部形成导电通道,产生足够的载流子,在外加电场的作用下产生感应电流,也可以衰减电磁波,从而增强对电磁波能量的消耗. |
| Author | 梁英杰 马倩倩 袁浩泽 吉小利 |
| AuthorAffiliation | 安徽理工大学 化学工程学院,安徽 淮南 232001 |
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| Keywords | 电磁波 点击化学 碳化硅 吸波性能 碳纳米管 |
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| Title | 具有宽带微波吸收性能的MWCNTs/SiC纳米复合材料的点击化学法制备及性能研究 |
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