Skip to main content
SpringerLink
Log in

Effects of compound coupling agents on the properties of PTFE/SiO2 microwave composites

  • Published:
Journal of Materials Science: Materials in Electronics Aims and scope Submit manuscript

Abstract

PTFE-based microwave composites filled with SiO2 dielectric ceramic (PTFE/SiO2) were prepared by powder processing technique followed by hot pressing. The effects of compound coupling agent on the contact angle and surface energy of SiO2 filler, as well as moisture absorption, dielectric properties, temperature coefficient of dielectric constant (τ ε ) and coefficient of thermal expansion (CTE) of the PTFE/SiO2 composites were investigated. The content of SiO2 in PTFE/SiO2 composites was maintained as 57 wt%. SiO2 powders were pre-treated by the mixture of phenyltrimethoxysilane (Z6124) and aminopropyltriethoxysilane (KH550) coupling agents before mixing and reacting with PTFE. The compositions of the coupling agents mixture are x% KH550 + (1.5 − x)% Z6124 (x: mass ratio to SiO2, x = 0, 0.15, 0.3, 0.45, 0.6, 0.75, 1.5). The results show that as the content of KH550 and Z6124 is 0.3 and 1.2 wt%, respectively, the modified SiO2 filler has a maximum value of contact angle, at the same time the composites achieve a most compact structure with a maximum density of 2.031 g/cm3. Moreover, improved properties, including dielectric constant (ε r ) of 2.83, dielectric loss (tan δ) of 7.4 × 10−4, CTE of 28.81 ppm/°C and temperature coefficient of dielectric constant (τ ε ) of 22.8, are obtained. The ratio of experimental and theoretical dielectric constant values is 96.97%. It has been found that the compound coupling agent (KH550 and Z6124 are 0.3 and 1.2 wt%, respectively) results in improved performance of the composites than that of previous reported work.

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

Scheme 1
Fig. 1
Fig. 2
Scheme 2
Fig. 3
Scheme 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7

Similar content being viewed by others

References

  1. S. Rajesh, V.S. Nisa, K.P. Murali, R. Ratheesh, J. Alloys Compd. 477, 677–682 (2009)

    Article  Google Scholar 

  2. J. Dhanya, A.N. Unnimaya, R. Ratheesh, J. Mater. Sci. Mater. Electron. 25, 4617–4622 (2014)

    Article  Google Scholar 

  3. K.P. Murali, S. Rajesh, O. Prakash, A.R. Kulkarni, R. Ratheesh, Compos. Part A Appl. Sci. Manuf. 40, 1179–1185 (2009)

    Article  Google Scholar 

  4. Y.-C. Chen, H.-C. Lin, Y.-D. Lee, J. Polym. Res. 10, 247–258 (2003)

    Article  Google Scholar 

  5. K.P. Murali, S. Rajesh, O. Prakash, A.R. Kulkarni, R. Ratheesh, Mater. Chem. Phys. 113, 290–295 (2009)

    Article  Google Scholar 

  6. Y. Yuan, S.R. Zhang, X.H. Zhou, E.Z. Li, Mater. Chem. Phys. 141, 175–179 (2013)

    Article  Google Scholar 

  7. S. Rajesh, K.P. Murali, R. Ratheesh, Polym. Compos. 30, 1480–1485 (2009)

    Article  Google Scholar 

  8. S. Shinoj, R. Visvanathan, S. Panigrahi, Biosyst. Eng. 106, 378–388 (2010)

    Article  Google Scholar 

  9. X. Sun, X. Chen, X. Liu, S. Qu, Appl. Phys. B 103, 391–398 (2011)

    Article  Google Scholar 

  10. Y. Yuan, Y.R. Cui, K.T. Wu, Q.Q. Huang, S.R. Zhang, J. Polym. Res. 21, 366 (2014)

    Article  Google Scholar 

  11. S. Rajesh, V.S. Nisa, K.P. Murali, R. Ratheesh, J. Alloys Compd. 477, 677–682 (2009)

    Article  Google Scholar 

  12. Y.-C. Chen, H.-C. Lin, Y.-D. Lee, J. Polym. Res. 11, 1–7 (2004)

    Article  Google Scholar 

  13. M.G. Todd, F.G. Shi, J. Appl. Phys. 94, 4551–4557 (2003)

    Article  Google Scholar 

  14. C.P. Camirand, Thermochim. Acta 417, 1–4 (2004)

    Article  Google Scholar 

  15. K.P. Murali, S. Rajesh, O. Prakash, A.R. Kulkarni, R. Ratheesh, Mater. Chem. Phys. 122, 317–320 (2010)

    Article  Google Scholar 

  16. W. Ma, X. Wang, J. Zhang, J. Polym. Sci. B Polym. Phys. 48, 2154–2164 (2010)

    Article  Google Scholar 

  17. K. Pathmanathan, J.Y. Cavaille, G.P. Johari, Polymer 29, 311–319 (1988)

    Article  Google Scholar 

  18. H. Yue, K.L. Virga, J.L. Prince, IEEE Trans. Compon. Packag. Manuf. Technol. B 21, 441–446 (1998)

    Article  Google Scholar 

  19. Z. Sassi, J.C. Bureau, A. Bakkali, Vib. Spectrosc. 28, 299–318 (2002)

    Article  Google Scholar 

  20. Z. Fang, B. Tang, Y. Li, F. Si, S. Zhang, J. Electron. Mater. 44, 4236–4242 (2015)

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. National Engineering Center of Electromagnetic Radiation Control Materials, University of Electronic Science and Technology of China, Jianshe Road, Chengdu, 610054, People’s Republic of China

    Ying Yuan, Yuting Yin, Dingding Yu, Haodong Lin, Jie Wang, Bin Tang & Enzhu Li

  2. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Jianshe Road, Chengdu, 610054, People’s Republic of China

    Ying Yuan, Yuting Yin, Dingding Yu, Haodong Lin, Jie Wang, Bin Tang & Enzhu Li

Authors
  1. Ying Yuan
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Yuting Yin
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Dingding Yu
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Haodong Lin
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Jie Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. Bin Tang
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. Enzhu Li
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Ying Yuan.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Yuan, Y., Yin, Y., Yu, D. et al. Effects of compound coupling agents on the properties of PTFE/SiO2 microwave composites. J Mater Sci: Mater Electron 28, 3356–3363 (2017). https://doi.org/10.1007/s10854-016-5929-8

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10854-016-5929-8

Keywords

Search

Navigation