A new type of carbon fiber of the electromagnetic shielding effectiveness research
Gaihua Wang · Journal of Functional Biomaterials · 2013
Bacterial cellulose for carbonization in different temperature will get a series of carbon fiber which was reticular structure.Using the X-ray diffractometer(XRD);Raman spectrometer and transmission electron microscope(TEM) on the preparation of carbon fibre crystal structure and microstructure characterization.Through the vector network analyzer in frequency 600MHz-14GHz range for electromagnetic parameter tests on it.Application of electromagnetic shielding theory can calculates and gets the electromagnetic shielding effectiveness of the carbon fiber.The results show that the carbon fiber in frequency for 6-14GHz which get in the carbonization of 1200℃,the shielding effectiveness are greater than 30dB,while it in 14GHz,the highest can achieve 41dB.The carbon fiber which was low density and the shielding effect was good has a good application prospect in the electromagnetic shielding area.