Millimeter wave attenuation performance of nickel coated bamboo fibre
Cao Chuan-xin · Journal of PLA University of Science and Technology · 2010
The electroless nickel coated bamboo fibre was prepared as the millimeter wave smoke interfering materials and characterized by SEM(scannrng electron microscopy),and EDS(energy disptrsrve spectroscopy).The surface of the product was coated by nickel completely,and the elemental compositions of the plate was Ni/P alloy.The product's conventional physicochemical properties and the 3 mmW,and 8 mmW attenuation performance were studied as well. The results show that the real density of the nickel coated bamboo fibre is 2.45 g/mm3,that the aspect ratio is 15～50,that the particle size is 350～1 250 μm,and that the powder electrical resistivity is 19.14 μΩ·cm.The VSM results show that the nickel coated bamboo fibre is one kind of ferromagnetic material,that under conditions that the dispersed density is 7 g/m2,the 3 mmW static attenuation is 13.6 dB, and the 8 mmW static attenuation is 28.8 dB,and that the millimeter wave attenuation mechanism of the nickel coated bamboo is a comprehensive action of electric loss absorption,magnetic loss absorption and scattering.