Lightweight Microwave Absorber from Industrial Waste Fly Ash Cenosphere

  • Pritom J. Bora
  • K. J. Vinoy
  • Kishore
  • Praveen C. Ramamurthy
  • Giridhar Madras
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 435)

Abstract

The present investigation demonstrates the microwave absorption property of magnetic alloy nanoparticle-coated solid industrial waste fly ash cenosphere (FAC). Here, cobalt iron (CoFe) alloy nanoparticles were chemically coated over FAC, and a composite matrix was made from these particles using epoxy resin. Surface morphology of both CoFe-FAC and epoxy/CoFe-FAC composites was studied. The dielectric loss and reflection loss (RL) of this polymer composite were studied by rectangular waveguide transmission line method. A 10 wt% CoFe-FAC-loaded epoxy composite shows an excellent microwave absorption property in the X-band (8.2–12.4 GHz). The most effective RL value −29 dB was obtained for epoxy/CoFe-FAC composite, whereas a pristine epoxy/FAC composite combination exhibits −12 dB RL under same condition. The thickness dependency of RL was also studied, and it indicates that the standard −10 dB RL can be obtained for epoxy/CoFe-FAC composite at a minimum thickness of 2 mm. The enhancement of dielectric loss, EM attenuation constant and loss factor with frequency was found to be responsible for the obtained RL.

Keywords

Fly ash cenosphere (FAC) Polymer composite Reflection loss (RL) Dielectric loss Loss factor 

Notes

Acknowledgements

Authors gratefully acknowledge the Department of Science and Technology (SB/S3/ME/51/2012) for financial support. This work is technically supported by IISc advanced characterization centre and CeNSE.

References

  1. 1.
    Vinoy, K.J., Jha, R.M.: Radar Absorbing Materials: From Theory to Design and Characterization. Springer, US (2011)Google Scholar
  2. 2.
    Wu, M., He, H., Zhao, Z., Yao, X.: Electromagnetic and microwave absorbing properties of iron fibre-epoxy resin composites. J. Phys. Appl. Phys. 33, 2398 (2000)CrossRefGoogle Scholar
  3. 3.
    Lv, H., Ji, G., Liu, W., Zhang, H., Du, Y.: Achieving hierarchical hollow carbon@Fe@Fe3O4 nanospheres with superior microwave absorption properties and lightweight features. J. Mater. Chem. C 3, 10232–10241 (2015)CrossRefGoogle Scholar
  4. 4.
    Khani, O., Shoushtari, M.Z., Farbod, M.: Excellent improvement in the static and dynamic magnetic properties of carbon coated iron nanoparticles for microwave absorption. Phys. B Condens. Matter. 477, 33–39 (2015)CrossRefGoogle Scholar
  5. 5.
    Lv, H., Liang, X., Cheng, Y., Zhang, H., Tang, D., Zhang, B., Ji, G., Du, Y.: Coin-like α-Fe2O3@CoFe2O4 core–shell composites with excellent electromagnetic absorption performance. ACS Appl. Mater. Interfaces 7, 4744–4750 (2015)CrossRefGoogle Scholar
  6. 6.
    Du, Y., Liu, W., Qiang, R., Wang, Y., Han, X., Ma, J., Xu, P.: Shell thickness-dependent microwave absorption of core–shell Fe3O4@C composites. ACS Appl. Mater. Interfaces 6, 12997–13006 (2014)CrossRefGoogle Scholar
  7. 7.
    Bora, P.J., Porwal, M., Ramamurthy, P.C., Madras, G.: Influence of MnO2 decorated Fe nano cauliflowers on microwave absorption and impedance matching of polyvinylbutyral (PVB) matrix. Mater. Res. Express. 3, 095003 (2016)CrossRefGoogle Scholar
  8. 8.
    Fu, W., Liu, S., Fan, W., Yang, H., Pang, X., Xu, J., Zou, G.: Hollow glass microspheres coated with CoFe2O4 and its microwave absorption property. J. Magn. Magn. Mater. 316, 54–58 (2007)CrossRefGoogle Scholar
  9. 9.
    Li, Q., Pang, J., Wang, B., Tao, D., Xu, X., Sun, L., Zhai, J.: Preparation, characterization and microwave absorption properties of barium-ferrite-coated fly-ash cenospheres. Adv. Powder Technol. 24, 288–294 (2013)CrossRefGoogle Scholar
  10. 10.
    Kolay, P., Singh, D.: Physical, chemical, mineralogical, and thermal properties of cenospheres from an ash lagoon. Cem. Concr. Res. 31, 539–542 (2001)CrossRefGoogle Scholar
  11. 11.
    Kumar, A.: Industrial Pollution: Problems and Solutions. Daya Publishing House (2006)Google Scholar
  12. 12.
    Bora, P.J., Vinoy, K.J., Ramamurthy, P.C., Kishore, Madras, G.: Lightweight polyaniline-cobalt coated fly ash cenosphere composite film for electromagnetic interference shielding. Electron. Mater. Lett. 1–7 (2016)Google Scholar
  13. 13.
    Bora, P.J., Mallik, N., Ramamurthy, P.C., Kishore, Madras, G.: Poly(vinyl butyral)-polyaniline-magnetically functionalized fly ash cenosphere composite film for electromagnetic interference shielding. Compos. Part B Eng. 106, 224–233 (2016)Google Scholar
  14. 14.
    Kulkarni, S.M.: Studies on fly ash-filled epoxy-cast slabs under compression. J. Appl. Polym. Sci. 84, 2404–2410 (2002)CrossRefGoogle Scholar
  15. 15.
    Meng, X., Shen, X.: Preparation of FeCo-, FeNi- and NiCo-alloy coated cenosphere composites by heterogeneous precipitation. Particuology 10, 334–338 (2012)CrossRefGoogle Scholar
  16. 16.
    Chen, L.F., Ong, C.K., Neo, C.P., Varadan, V.V., Varadan, V.K.: Microwave electronics: measurement and materials characterization. Wiley, New York (2004)Google Scholar
  17. 17.
    Guo, C., Xia, F., Wang, Z., Zhang, L., Xi, L., Zuo, Y.: Flowerlike iron oxide nanostructures and their application in microwave absorption. J. Alloys Compd. 631, 183–191 (2015)CrossRefGoogle Scholar
  18. 18.
    Wang, J., Zhou, H., Zhuang, J., Liu, Q.: Magnetic γ-Fe2O3, Fe3O4, and Fe nanoparticles confined within ordered mesoporous carbons as efficient microwave absorbers. Phys. Chem. Chem. Phys. PCCP 17, 3802–3812 (2015)CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Pritom J. Bora
    • 1
  • K. J. Vinoy
    • 2
  • Kishore
    • 3
  • Praveen C. Ramamurthy
    • 4
  • Giridhar Madras
    • 1
  1. 1.Interdisciplinary Centre for Energy Research (ICER)Indian Institute of ScienceBangaloreIndia
  2. 2.Department of Electrical and Communication EngineeringIndian Institute of ScienceBangaloreIndia
  3. 3.Department of Material EngineeringIndian Institute of ScienceBangaloreIndia
  4. 4.Department of Material Engineering, Interdisciplinary Centre for Energy Research (ICER)Indian Institute of ScienceBangaloreIndia

Personalised recommendations