| 连续含铁碳化硅纤维及其结构吸波材料的研制 |
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| 引用本文： | 陈志彦,王军,李效东,李文芳.连续含铁碳化硅纤维及其结构吸波材料的研制[J].复合材料学报,2007,24(5):72-76. |
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| 作者姓名： | 陈志彦 王军 李效东 李文芳 |
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| 作者单位： | 1. 华南理工大学,机械工程学院,广州,510640
2. 国防科技大学,新型陶瓷纤维及其复合材料重点实验室,长沙,410073 |
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| 基金项目： | 国防预研基金资助项目（41310030301） 华南理工大学博士后创新基金资助项目 |
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| 摘 要： | 为了研制碳化硅吸波纤维, 首次采用聚二甲基硅烷(PDMS)和二茂铁合成聚铁碳硅烷(PFCS), PFCS经多孔熔融纺丝、 空气不熔化和在N2中1320℃连续烧成, 可制得连续含铁碳化硅(SiC(Fe))吸波纤维; 用SiC(Fe)纤维与环氧树脂制备的结构材料具有良好的吸波性能。XPS剖面分析、 Raman光谱表明: 纤维表面有一层厚约100nm的富碳层, 由表及里铁的含量逐渐增加; 随着温度的升高游离碳的排列逐渐规整化。研究了碳对纤维性能的影响, 结果表明: 游离碳的存在有利于纤维电阻率的降低, 复介电常数和介电损耗的增大。
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| 关 键 词： | 聚铁碳硅烷 连续SiC(Fe)纤维 结构吸波材料 游离碳 XPS剖面分析 |
| 文章编号： | 1000-3850（2007）05-0072-05 |
| 收稿时间： | 2006-10-27 |
| 修稿时间： | 2007-01-10 |
Preparation of continuous Fe containing carbide silicon fibers and their structural radar-wave absorbing materials |
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| CHEN Zhiyan,WANG Jun,LI Xiaodong,LI Wenfang.Preparation of continuous Fe containing carbide silicon fibers and their structural radar-wave absorbing materials[J].Acta Materiae Compositae Sinica,2007,24(5):72-76. |
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| Authors: | CHEN Zhiyan WANG Jun LI Xiaodong LI Wenfang |
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| Affiliation: | 1. School of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China; 2. Key Laboratory of Ceramic Fibers and the Composites, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | In order to prepare carbide silicon radar-wave absorbing fibers, the continuous carbide silicon (SiC(Fe)) fibers containing Fe were prepared for the first time from a precursor polyferrocarbosilane (PFCS), which was synthesized from polydimethylsilane and ferrocene, followed by melt-spinning, curing in air, and continuous pyrolysis at 1320℃ in N2 atmosphere. The structural materials prepared with this fibers and resin show good radar-wave absorbing properties. XPS depth analysis shows that a carbon-enriched layer of about 100nm is formed on the surface of the fiber and the atomic concentration of element Fe increases a little from edge to inner. The free carbon arranges gradually in order with increasing the temperature by Raman spectra analysis. The effect of the free carbon on the properties of the continuous SiC(Fe) fibers was studied. The results show that the free carbon is of benefit to decreasing the specific resistance but increasing the complex permittivity (ε' and ε″) and relative complex permittivity (εr) of the fibers. |
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| Keywords: | polyferrocarbosilane continuous SiC(Fe) fibers structural radar-wave absorbing materials free carbon XPS depth analysis |
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