电纺Co掺杂碳纳米纤维的制备及其吸波性能
TB34; 采用静电纺丝法和后续的热处理工艺制备不同浓度Co纳米粒子掺杂的碳纳米纤维.通过差热-热重(DSC-TGA)仪、X射线衍射仪(XRD)、扫描电子显微镜(SEM)、矢量网络分析仪(VNA)对复合碳纳米纤维的热稳定性、物相、微观结构、电磁参数进行表征,并对其微波吸收性能进行研究.结果 表明:当炭化温度为800℃时,复合纳米纤维结晶度适中,无定形碳部分转化为石墨相碳,CoAc2全部被炭化还原为面心立方结构的金属Co纳米粒子,且纤维形貌完整,有串珠状结构存在于纤维网络之间;掺杂后碳纤维电磁性能得到明显改善,当掺杂量为7％(质量分数),涂层厚度为1.5mm时,有效吸收带宽达到最大,为4.5GH...
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| Published in | 材料工程 Vol. 47; no. 12; pp. 118 - 123 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
陆军工程大学,石家庄,050003
20.12.2019
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| Subjects | |
| Online Access | Get full text |
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| Abstract | TB34; 采用静电纺丝法和后续的热处理工艺制备不同浓度Co纳米粒子掺杂的碳纳米纤维.通过差热-热重(DSC-TGA)仪、X射线衍射仪(XRD)、扫描电子显微镜(SEM)、矢量网络分析仪(VNA)对复合碳纳米纤维的热稳定性、物相、微观结构、电磁参数进行表征,并对其微波吸收性能进行研究.结果 表明:当炭化温度为800℃时,复合纳米纤维结晶度适中,无定形碳部分转化为石墨相碳,CoAc2全部被炭化还原为面心立方结构的金属Co纳米粒子,且纤维形貌完整,有串珠状结构存在于纤维网络之间;掺杂后碳纤维电磁性能得到明显改善,当掺杂量为7％(质量分数),涂层厚度为1.5mm时,有效吸收带宽达到最大,为4.5GHz,相比于纯碳纳米纤维,吸波性能得到显著提升. |
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| AbstractList | TB34; 采用静电纺丝法和后续的热处理工艺制备不同浓度Co纳米粒子掺杂的碳纳米纤维.通过差热-热重(DSC-TGA)仪、X射线衍射仪(XRD)、扫描电子显微镜(SEM)、矢量网络分析仪(VNA)对复合碳纳米纤维的热稳定性、物相、微观结构、电磁参数进行表征,并对其微波吸收性能进行研究.结果 表明:当炭化温度为800℃时,复合纳米纤维结晶度适中,无定形碳部分转化为石墨相碳,CoAc2全部被炭化还原为面心立方结构的金属Co纳米粒子,且纤维形貌完整,有串珠状结构存在于纤维网络之间;掺杂后碳纤维电磁性能得到明显改善,当掺杂量为7％(质量分数),涂层厚度为1.5mm时,有效吸收带宽达到最大,为4.5GHz,相比于纯碳纳米纤维,吸波性能得到显著提升. |
| Author | 刘嘉玮 王建江 张飒 赵芳 |
| AuthorAffiliation | 陆军工程大学,石家庄,050003 |
| AuthorAffiliation_xml | – name: 陆军工程大学,石家庄,050003 |
| Author_FL | WANG Jian-jiang ZHANG Sa ZHAO Fang LIU Jia-wei |
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| Author_xml | – sequence: 1 fullname: 张飒 – sequence: 2 fullname: 王建江 – sequence: 3 fullname: 赵芳 – sequence: 4 fullname: 刘嘉玮 |
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| DocumentTitle_FL | Preparation of Co doped carbon nanofibers composites synthesized by electrospinning and its microwave absorption properties |
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| Keywords | 碳纳米纤维 静电纺丝 串珠状结构 吸波性能 金属Co纳米粒子 |
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| Snippet | TB34; 采用静电纺丝法和后续的热处理工艺制备不同浓度Co纳米粒子掺杂的碳纳米纤维.通过差热-热重(DSC-TGA)仪、X射线衍射仪(XRD)、扫描电子显微镜(SEM)、矢量网络分析仪(VNA)对复合碳纳米纤维的热稳定性、物相、微观结构、电磁参数进行表征,并对其微波吸收性能进行研究.结果... |
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| Title | 电纺Co掺杂碳纳米纤维的制备及其吸波性能 |
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