Skip to main content
SpringerLink
Log in

Fabrication, structure, and property of epoxy-based composites with metal-insulator core-shell structure fillers

  • Article
  • Published:
Journal of Materials Research Aims and scope Submit manuscript

Abstract

The Ag@SiO2 core-shell structure nanoparticles prepared by chemical method were dispersed into epoxy matrix. By comparing with the epoxy-based composites filled with the mixed Ag and SiO2 nanoparticles (Ag + SiO2), it is found that the Ag@SiO2 core-shell structure fillers had important effects on the improved dielectric properties of the Ag@SiO2/epoxy composites. The core-shell structure fillers introduce a duplex interfacial polarization and a small number of free charge carriers, which enhance the dielectric permittivity of the composites. At the same time, the insulating SiO2 shell layer changes the interfacial interaction between the Ag filler and the epoxy matrix, not only avoiding Ag particles to connect directly and aggregate together but also providing a rough surface to contact with the epoxy host, which enhances the compatibility between the Ag@SiO2 fillers and the epoxy matrix. As the Ag@SiO2 packing ratio increases, the permittivity of the composites straightly increases and the loss tangent decreases, reaching the maximum and minimum respectively with the filler loading up to 60%.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

FIG. 1
FIG. 2
FIG. 3
FIG. 4
FIG. 5
FIG. 6
FIG. 7

Similar content being viewed by others

References

  1. T. Zhou, J.W. Zha, Y. Hou, D.R. Wang, J. Zhao, and Z.M. Dang: Surface-functionalized MWNTs with emeraldine base: Preparation and improving dielectric properties of polymer nanocomposites. ACS Appl. Mater. Interfaces 3, 4557 (2011).

    Article  CAS  Google Scholar 

  2. C.P. Bowen, R.E. Newnham, and C.A. Randall: Dielectric properties of dielectrophoretically assembled particulate-polymer composites. J. Mater. Res. 13, 205 (1998).

    Article  CAS  Google Scholar 

  3. C. Putson, L. Lebrun, D. Guyomar, N. Muensit, P.J. Cottinet, L. Seveyrat, and B. Guiffard: Effects of copper filler sizes on the dielectric properties and the energy harvesting capability of nonpercolated polyurethane composites. J. Appl. Phys. 109, 024104 (2011).

    Article  Google Scholar 

  4. M.B. Bryning, M.F. Islam, J.M. Kikkawa, and A.G. Yodh: Very low conductivity threshold in bulk isotropic single-walled carbon nanotube-epoxy composites. Adv. Mater. 17, 1186 (2005).

    Article  CAS  Google Scholar 

  5. T. Kashiwagi; F.M. Du, J.F. Douglas, K.I. Winey, R.H. Harris, and J.R. Shields: Nanoparticle networks reduce the flammability of polymer nanocomposites. Nat. Mater. 4, 928 (2005).

    Article  CAS  Google Scholar 

  6. R.K. Srivastava, T.N. Narayanan, A.P.R. Mary, M.R. Anantharaman, A. Srivastava, R. Vajtai, and P.M. Ajayan: Ni filled flexible multi-walled carbon nanotube-polystyrene composite films as efficient microwave absorbers. Appl. Phys. Lett. 99, 113116 (2011).

    Article  Google Scholar 

  7. A. Dimiev, W. Lu, K. Zeller, B. Crowgey, L.C. Kempel, and J.M. Tour: Low-loss, high-permittivity composites made from graphene nanoribbons. ACS Appl. Mater. Interfaces 3, 4657 (2011).

    Article  CAS  Google Scholar 

  8. J.M. Thomassin, I. Huynen, R. Jerome, and C. Detrembleur: Functionalized polypropylenes as efficient dispersing agents for carbon nanotubes in a polypropylene matrix; application to electromagnetic interference (EMI) absorber materials. Polymer 51, 115 (2010).

    Article  CAS  Google Scholar 

  9. H.Y. Liu, Y. Shen, Y. Song, C.W. Nan, Y.H. Lin, and X.P. Yang: Carbon nanotube array/polymer core/shell structured composites with high dielectric permittivity, low dielectric loss, and large energy density. Adv. Mater. 23, 5104 (2011).

    Article  CAS  Google Scholar 

  10. Z.M. Dang, J.K. Yuan, J.W. Zha, T. Zhou, S.T. Li, and G.H. Hu: Fundamentals, processes and applications of high-permittivity polymer matrix composites. Prog. Mater. Sci. 57, 660 (2012).

    Article  CAS  Google Scholar 

  11. C.W. Nan, Y. Shen, and J. Ma: Physical properties of composites near percolation. Annu. Rev. Mater. Res. 40, 131 (2010).

    Article  CAS  Google Scholar 

  12. G.S. Wang: Enhanced dielectric properties of three-phase-percolative composites based on thermoplastic-ceramic matrix (BaTiO3 + PVDF) and ZnO radial nanostructures. ACS Appl. Mater. Interfaces 2, 1290 (2010).

    Article  CAS  Google Scholar 

  13. L.Y. Xie, X.Y. Huang, C. Wu, and P.K. Jiang: Core-shell structured poly(methyl methacrylate)/BaTiO3 nanocomposites prepared by in situ atom transfer radical polymerization: A route to high dielectric constant materials with the inherent low loss of the base polymer. J. Mater. Chem. 21, 5897 (2011).

    Article  CAS  Google Scholar 

  14. Y. Shen, Y.H. Lin, M. Li, and C.W. Nan: High dielectric performance of polymer composite films induced by a percolating interparticle barrier layer. Adv. Mater. 19, 1418 (2007).

    Article  CAS  Google Scholar 

  15. L. Qi, B.I. Lee, S.H. Chen, W.D. Samuels, and G.J. Exarhos: High-dielectric-constant silver-epoxy composites as embedded dielectrics. Adv. Mater. 17, 1777 (2005).

    Article  CAS  Google Scholar 

  16. J.W. Xu and C.P. Wong: Low-loss percolative dielectric composite. Appl. Phys. Lett. 87, 082907 (2005).

    Article  Google Scholar 

  17. F. He, S. Lau, H.L. Chan, and J.T. Fan: High dielectric permittivity, and low percolation threshold in nanocomposites based on poly(vinylidene fluoride) and exfoliated graphite nanoplates. Adv. Mater. 21, 710 (2009).

    Article  CAS  Google Scholar 

  18. T. Wei, C.Q. Jin, W. Zhong, and J.M. Liu: High permittivity polymer embedded with Co/ZnO core/shell nanoparticles modified by organophosphorus acid. Appl. Phys. Lett. 91, 222907 (2007).

    Article  Google Scholar 

  19. Y.C. Zhou, L. Wang, H. Zhang, Y.Y. Bai, Y.J. Niu, and H. Wang: Enhanced high thermal conductivity and low permittivity of polyimide based composites by core-shell Ag@SiO2 nanoparticle fillers. Appl. Phys. Lett. 101, 012903 (2012).

    Article  Google Scholar 

  20. Z.M. Dang, S.S. You, J.W. Zha, H.T. Song, and S.T. Li: Effect of shell-layer thickness on dielectric properties in Ag@TiO2 core@shell nanoparticles filled ferroelectric poly(vinylidene fluoride) composites. Phys. Status Solidi A 207, 739 (2010).

    Article  CAS  Google Scholar 

  21. Y. Zhang, Y. Wang, Y.M. Deng, and J.B. Bai: Enhanced dielectric properties of ferroelectric polymer composites induced by metal-semiconductor Zn-ZnO core-shell structure. ACS Appl. Mater. Interfaces 4, 65 (2012).

    Article  CAS  Google Scholar 

  22. Y.U. Wang, D.Q. Tan, and J. Krahn: Computational study of dielectric composites with core-shell filler particles. J. Appl. Phys. 110, 044103 (2011).

    Article  Google Scholar 

  23. C. Graf, D.L.J. Vossen, A. Imhof, and A.V. Blaaderen: A general method to coat colloidal particles with silica. Langmuir 19, 6693 (2003).

    Article  CAS  Google Scholar 

  24. Y. Shen, Y.H. Lin, and C.W. Nan: Interfacial effect on dielectric properties of polymer nanocomposites filled with core/shell-structured particles. Adv. Funct. Mater. 17, 2405 (2007).

    Article  CAS  Google Scholar 

  25. J. Chon, S. Ye, K.J. Cha, S.C. Lee, Y.S. Koo, J.H. Jung, and Y.K. Kwon: High-K dielectric sol-gel hybrid materials containing barium titanate nanoparticles. Chem. Mater. 22, 19 (2010).

    Article  Google Scholar 

  26. Z.M. Dang, T. Zhou, S.H. Yao, J.K. Yuan, J.W. Zha, H.T. Song, J.Y. Li, Q. Chen, W.T. Yang, and J. Bai: Advanced calcium copper titanate/polyimide functional hybrid films with high dielectric permittivity. Adv. Mater. 19, 6 (2007).

    Google Scholar 

  27. G.C. Psarras, E. Manolakaki, and G.M. Tsangaris: Electrical relaxations in polymeric particulate composites of epoxy resin and metal particles. Composites Part A 33, 3 (2002).

    Article  Google Scholar 

  28. P. Lunkenheimer, V. Bobnar, A.V. Pronin, A.I. Ritus, A.A. Volkov, and A. Loidl: Origin of apparent colossal dielectric constants. Phys. Rev. B 66, 5 (2002).

    Article  Google Scholar 

  29. J.J. Li, S.I. Seok, B.J. Chu, F. Dogan, Q.M. Zhang, and Q. Wang: Nanocomposites of ferroelectric polymers with TiO2 nanoparticles exhibiting significantly enhanced electrical energy density. Adv. Mater. 2, 2 (2009).

    Google Scholar 

Download references

Acknowledgments

This work was supported by National Science Foun-dation of China (61025002) and National 973-project of China (2009CB623302).

Author information

Authors and Affiliations

  1. Electronic Materials Research Laboratory, Key Laboratory of Ministry of Education and International Center for Dielectric Research, Department of Electronic Science and Technology, Xi’an Jiaotong University, Xi’an, 710049, China

    Yujuan Niu, Yuanyuan Bai, Ke Yu, Li He, Feng Xiang & Hong Wang

Authors
  1. Yujuan Niu
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Yuanyuan Bai
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Ke Yu
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Li He
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Feng Xiang
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. Hong Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Hong Wang.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Niu, Y., Bai, Y., Yu, K. et al. Fabrication, structure, and property of epoxy-based composites with metal-insulator core-shell structure fillers. Journal of Materials Research 28, 2644–2649 (2013). https://doi.org/10.1557/jmr.2013.248

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1557/jmr.2013.248

Search

Navigation