Toughened Epoxy Filled with Ferromagnetic Particles as High Temperature Resistant Microwave Absorbing Coating
In this work,microwave absorbing coatings consisted of toughened epoxy and ferromagnetic particles were prepared.The epoxy groups and isocyanate groups were investigated by Fourier Transform Infrared(FTIR)spectroscopy.Mechanical properties of the coatings are effectively improved comparing with the one employing unmodified epoxy in room temperature.After heat treat at 150℃ for approximate 100 hours,the coatings still have special impact strength between 45 and 50 Kg·cm according to Chinese National Standards GB 1732-1993 and flexibility about 2-3mm according to Chinese National Standards GB 6742-2007.Complex permittivity ε(f)and permeability μ(f)of the ferromagnetic particles were measured using network analyzer in the frequency range from 2 to 18 GHz,to explain the reflection loss behavior of the coatings tested in microwave chamber.The morphology of ferromagnetic particles and their random dispersion in the coatings were observed by field emission scanning electron microscope(FESEM).
Zhenjiang Song Jianliang Xie Jianing Peng Peiheng Zhou Longjiang Deng
State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China,Jianshe Road,Chengdu 610054,China
国际会议
Progress in Electromagnetics Research Symposium 2011(2011年电磁学研究新进展学术研讨会)
苏州
英文
950-954
2011-09-01（万方平台首次上网日期，不代表论文的发表时间）