Skin collagen fiber-based radar absorbing materials

查看全文 作　　者：LIU [1]YiShan;HUANG [1]Xin;GUO [2]PeiPei;LIAO [1]XuePin;SHI [2]Bi

机构地区：[1]Department of Biomass Chemistry and Engineering, Sichuan University, Chengdu 610065, China,';[2]National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China

出　　处：《Chinese Science Bulletin》索引2011年第56卷第2期,共7页

基　　金：supported by the Key Program of National Science Fund of China(20536030);National Natural Science Foundation of China(2077-6090);National Technologies R&D Program(2006BAC02A09) 摘　　要：By using skin collagen fiber (CF) as raw material,Schiff base structure containing CF (Sa-CF) was synthesized through CF-salicylaldehyde reaction.Then a novel radar absorbing material (Fe-Sa-CF) was prepared by chelating reaction between Sa-CF and Fe 3+.The coaxial transmission and reflection method was used to analyze the complex permittivity and complex magnetic permeability of these CF-based materials,and the radar cross section (RCS) method was used to investigate their radar absorbing properties in the frequency range of 1.0-18.0 GHz.Experimental results indicated that the conductivity of CF increased from initial 1.08×10-11 to 2.86×10-6 S/cm after being transferred into Fe-Sa-CF,and its dielectric loss tangent (tanδ) in the frequency range of 1.0-17.0 GHz also increased.These facts suggest that the Fe-Sa-CF is electric-loss type radar absorbing material.In the frequency range of 3.0-18.0 GHz,Sa-CF (1.0 mm in thickness) exhibited somewhat radar absorbing property with maximum radar reflection loss (RL) of-4.73 dB.As for Fe-Sa-CF,the absorbing bandwidth was broadened,and the absorbing intensity significantly increased in the frequency range of 1.0-18.0 GHz where a maximum radar RL of-9.23 dB was observed.In addition,the radar absorbing intensity of Fe-Sa-CF can be further improved by increasing membrane thickness.When the thickness reached to 2.0 mm,the RL values of Fe-Sa-CF were-15.0-18.0 dB in the frequency range of 7.0-18.0 GHz.Consequently,a kind of novel radar absorbing material can be prepared by chemical modification of collagen fiber,which is characterized by thin thickness,low density,broad absorption bandwidth and high absorption intensity. 关键词：雷达吸波材料胶原纤维皮肤介电损耗角正切吸收强度频率范围 CF卡千兆赫

相关文献

参考文献（36）
引证文献（5）
耦合文献（141）

参考文献(36)

引证文献(5)

耦合文献(141)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Skin collagen fiber-based radar absorbing materials

参考文献(36)

引证文献(5)

耦合文献(141)

用户提示