Study on the microwave absorption properties of the wool/carbon fiber blended nonwoven
Nonwovens with different thicknesses and carbon fiber content were fabricated by blending wool, pitch-based carbon fiber and thermo-bonding fiber and by the through-air thermal bonding process. Microwave absorption properties of the nonwoven in X band and Ku band (8.2～18GHz) were investigated by the far- field RCS measurement. It was demonstrated that the microwave absorbing capability of the nonwoven in the frequency range from 8.2GHz to 18GHz was greatly improved by blending a little carbon fiber into the wool in fabricating the nonwoven. The excellent microwave absorption of the wool/carbon fiber nonwoven meant that such materials had great potential in the military application for radar camouflage and the civil application for personal protection against the electromagnetic radiation. Electromagnetic parameters of the nonwovens with different carbon fiber contents were measured by the waveguide measurement, on the basis of which the microwave reflectivity of the nonwovens were calculated, according to the principle of the equivalent transmission line approach. It was proved that the results from the measurement agreed very well with those from the calculation, which indicated that the equivalent transmission line approach was well applied to the prediction of the microwave absorption of wool/carbon fiber nonwovens and was a powerful tool for the design and optimization of such materials.
nonwoven microwave reflectivity electromagnetic parameters equivalent transmission line approach radar camouflage electromagnetic shielding
Zhu Hua Li Shuanghui Wang Xiangcheng
China Academy of Safety Science and Technology, Beijing 100029, China Institute of Chemical Defense, Beijing 102205, China
国际会议
2006中国国际毛纺织会议暨IWTO羊毛论坛(2006 China International Wool Textile Conference & IWTO Wool Forum)
西安
英文
346-352
2006-11-19（万方平台首次上网日期，不代表论文的发表时间）