Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-30T21:33:33.988Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Published online by Cambridge University Press:  25 September 2013

Yujuan Niu ,
Yuanyuan Bai ,
Ke Yu ,
Li He ,
Feng Xiang  and
Hong Wang
Yujuan Niu
Affiliation:
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
Yuanyuan Bai
Affiliation:
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
Ke Yu
Affiliation:
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
Li He
Affiliation:
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
Feng Xiang
Affiliation:
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
Hong Wang*
Affiliation:
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
*
a)Address all correspondence to this author. e-mail: [email protected]
Get access

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%.

Keywords

compositescore/shelldielectric properties
Type
Articles
Information
Journal of Materials Research , Volume 28 , Issue 18 , 28 September 2013 , pp. 2644 - 2649
Copyright
Copyright © Materials Research Society 2013 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Zhou, T., Zha, J.W., Hou, Y., Wang, D.R., Zhao, J., and Dang, Z.M.: Surface-functionalized MWNTs with emeraldine base: Preparation and improving dielectric properties of polymer nanocomposites. ACS Appl. Mater. Interfaces 3, 4557 (2011).CrossRefGoogle ScholarPubMed
Bowen, C.P., Newnham, R.E., and Randall, C.A.: Dielectric properties of dielectrophoretically assembled particulate-polymer composites. J. Mater. Res. 13, 205 (1998).CrossRefGoogle Scholar
Putson, C., Lebrun, L., Guyomar, D., Muensit, N., Cottinet, P.J., Seveyrat, L., and Guiffard, B.: Effects of copper filler sizes on the dielectric properties and the energy harvesting capability of nonpercolated polyurethane composites. J. Appl. Phys. 109, 024104 (2011).CrossRefGoogle Scholar
Bryning, M.B., Islam, M.F., Kikkawa, J.M., and Yodh, A.G.: Very low conductivity threshold in bulk isotropic single-walled carbon nanotube-epoxy composites. Adv. Mater. 17, 1186 (2005).CrossRefGoogle Scholar
Kashiwagi, T.; Du, F.M., Douglas, J.F., Winey, K.I., Harris, R.H., and Shields, J.R.: Nanoparticle networks reduce the flammability of polymer nanocomposites. Nat. Mater. 4, 928 (2005).CrossRefGoogle ScholarPubMed
Srivastava, R.K., Narayanan, T.N., Mary, A.P.R., Anantharaman, M.R., Srivastava, A., Vajtai, R., and Ajayan, P.M.: Ni filled flexible multi-walled carbon nanotube-polystyrene composite films as efficient microwave absorbers. Appl. Phys. Lett. 99, 113116 (2011).CrossRefGoogle Scholar
Dimiev, A., Lu, W., Zeller, K., Crowgey, B., Kempel, L.C., and Tour, J.M.: Low-loss, high-permittivity composites made from graphene nanoribbons. ACS Appl. Mater. Interfaces 3, 4657 (2011).CrossRefGoogle ScholarPubMed
Thomassin, J.M., Huynen, I., Jerome, R., and Detrembleur, C.: Functionalized polypropylenes as efficient dispersing agents for carbon nanotubes in a polypropylene matrix; application to electromagnetic interference (EMI) absorber materials. Polymer 51, 115 (2010).CrossRefGoogle Scholar
Liu, H.Y., Shen, Y., Song, Y., Nan, C.W., Lin, Y.H., and Yang, X.P.: Carbon nanotube array/polymer core/shell structured composites with high dielectric permittivity, low dielectric loss, and large energy density. Adv. Mater. 23, 5104 (2011).CrossRefGoogle ScholarPubMed
Dang, Z.M., Yuan, J.K., Zha, J.W., Zhou, T., Li, S.T., and Hu, G.H.: Fundamentals, processes and applications of high-permittivity polymer matrix composites. Prog. Mater. Sci. 57, 660 (2012).CrossRefGoogle Scholar
Nan, C.W., Shen, Y., and Ma, J.: Physical properties of composites near percolation. Annu. Rev. Mater. Res. 40, 131 (2010).CrossRefGoogle Scholar
Wang, G.S.: 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).CrossRefGoogle ScholarPubMed
Xie, L.Y., Huang, X.Y., Wu, C., and Jiang, P.K.: 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).CrossRefGoogle Scholar
Shen, Y., Lin, Y.H., Li, M., and Nan, C.W.: High dielectric performance of polymer composite films induced by a percolating interparticle barrier layer. Adv. Mater. 19, 1418 (2007).CrossRefGoogle Scholar
Qi, L., Lee, B.I., Chen, S.H., Samuels, W.D., and Exarhos, G.J.: High-dielectric-constant silver-epoxy composites as embedded dielectrics. Adv. Mater. 17, 1777 (2005).CrossRefGoogle Scholar
Xu, J.W. and Wong, C.P.: Low-loss percolative dielectric composite. Appl. Phys. Lett. 87, 082907 (2005).CrossRefGoogle Scholar
He, F., Lau, S., Chan, H.L., and Fan, J.T.: High dielectric permittivity, and low percolation threshold in nanocomposites based on poly(vinylidene fluoride) and exfoliated graphite nanoplates. Adv. Mater. 21, 710 (2009).CrossRefGoogle Scholar
Wei, T., Jin, C.Q., Zhong, W., and Liu, J.M.: High permittivity polymer embedded with Co/ZnO core/shell nanoparticles modified by organophosphorus acid. Appl. Phys. Lett. 91, 222907 (2007).CrossRefGoogle Scholar
Zhou, Y.C., Wang, L., Zhang, H., Bai, Y.Y., Niu, Y.J., and Wang, H.: Enhanced high thermal conductivity and low permittivity of polyimide based composites by core-shell Ag@SiO2 nanoparticle fillers. Appl. Phys. Lett. 101, 012903 (2012).CrossRefGoogle Scholar
Dang, Z.M., You, S.S., Zha, J.W., Song, H.T., and Li, S.T.: 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).CrossRefGoogle Scholar
Zhang, Y., Wang, Y., Deng, Y.M., and Bai, J.B.: Enhanced dielectric properties of ferroelectric polymer composites induced by metal-semiconductor Zn-ZnO core-shell structure. ACS Appl. Mater. Interfaces 4, 65 (2012).CrossRefGoogle ScholarPubMed
Wang, Y.U., Tan, D.Q., and Krahn, J.: Computational study of dielectric composites with core-shell filler particles. J. Appl. Phys. 110, 044103 (2011).CrossRefGoogle Scholar
Graf, C., Vossen, D.L.J., Imhof, A., and Blaaderen, A.V.: A general method to coat colloidal particles with silica. Langmuir 19, 6693 (2003).CrossRefGoogle Scholar
Shen, Y., Lin, Y.H., and Nan, C.W.: Interfacial effect on dielectric properties of polymer nanocomposites filled with core/shell-structured particles. Adv. Funct. Mater. 17, 2405 (2007).CrossRefGoogle Scholar
Chon, J., Ye, S., Cha, K.J., Lee, S.C., Koo, Y.S., Jung, J.H., and Kwon, Y.K.: High-K dielectric sol-gel hybrid materials containing barium titanate nanoparticles. Chem. Mater. 22, 19 (2010).CrossRefGoogle Scholar
Dang, Z.M., Zhou, T., Yao, S.H., Yuan, J.K., Zha, J.W., Song, H.T., Li, J.Y., Chen, Q., Yang, W.T., and Bai, J.: Advanced calcium copper titanate/polyimide functional hybrid films with high dielectric permittivity. Adv. Mater. 19, 6 (2007).Google Scholar
Psarras, G.C., Manolakaki, E., and Tsangaris, G.M.: Electrical relaxations in polymeric particulate composites of epoxy resin and metal particles. Composites Part A 33, 3 (2002).CrossRefGoogle Scholar
Lunkenheimer, P., Bobnar, V., Pronin, A.V., Ritus, A.I., Volkov, A.A., and Loidl, A.: Origin of apparent colossal dielectric constants. Phys. Rev. B 66, 5 (2002).CrossRefGoogle Scholar
Li, J.J., Seok, S.I., Chu, B.J., Dogan, F., Zhang, Q.M., and Wang, Q.: Nanocomposites of ferroelectric polymers with TiO2 nanoparticles exhibiting significantly enhanced electrical energy density. Adv. Mater. 2, 2 (2009).Google Scholar