Polymer-ceramic composites are widely applied in microwave substrate materials due to the excellent dielectric properties and simple preparation process recently. Polytetrafluoroethylene-based (PTFE) composites filled with Zn0.5Ti0.5NbO4 (ZTN) ceramic particles were fabricated by hot-pressing. The particles were modified by C14H19F13O3Si to enhance the interface compatibility between PTFE and ZTN powders, which was characterized by X-ray photoelectron spectroscopy (XPS) and contact angle. The surface characteristic of particles transformed into hydrophobicity and tight microstructure as well as better dielectric properties were obtained after the surface modification. The microstructure, dielectric, thermal, mechanical properties, and water absorption of the composites concerning ZTN content were investigated. Modified ZTN/PTFE composites with 50 vol% ZTN particles exhibit excellent dielectric properties with a high dielectric constant of 8.3, an extremely low dielectric loss of 0.00055 at 7 GHz, and a stable temperature coefficient of the dielectric constant of −12.2 ppm/°C. All the properties show modified ZTN particles filled PTFE composite is the potential material for microwave substrate application.
Guo J, Zhao XT, Herisson de Beauvoir T, et al. Recent progress in applications of the cold sintering process for ceramic-polymer composites. Adv Funct Mater 2018, 28: 1801724.
Qi YY, Luo Q, Shen J, et al. Surface modification of BMN particles with silane coupling agent for composites with PTFE. Appl Surf Sci 2017, 414: 147–152.
Luo FC, Tang B, Fang ZX, et al. Polytetrafluoroethylene based, F8261 modified realization of Li2SnMg0.5O3.5 filled composites. Appl Surf Sci 2020, 503: 144088.
Pan C, Kou KC, Jia Q, et al. Improved thermal conductivity and dielectric properties of hBN/PTFE composites via surface treatment by silane coupling agent. Compos Part B: Eng 2017, 111: 83–90.
Pan C, Kou KC, Zhang Y, et al. Enhanced through-plane thermal conductivity of PTFE composites with hybrid fillers of hexagonal boron nitride platelets and aluminum nitride particles. Compos Part B: Eng 2018, 153: 1–8.
You YY, Yuan Y, Wu KT, et al. The dielectric and thermal properties of Mn-doped (1−x)ZrTi2O6−xZnNb2O6 filled PTFE composites. J Mater Sci: Mater Electron 2014, 25: 3010–3015.
Li ZT, Yuan Y, Yao MH, et al. Synthesis and characterization of PTFE/(NaLi1−x)0.5Nd0.5TiO3 composites with high dielectric constant and high temperature stability for microwave substrate applications. Ceram Int 2019, 45: 22015–22021.
Peng HY, Ren HS, Dang MZ, et al. Novel high dielectric constant and low loss PTFE/CNT composites. Ceram Int 2018, 44: 16556–16560.
James NK, Jacob KS, Murali KP, et al. Ba(Mg1/3Ta2/3)O3 filled PTFE composites for microwave substrate applications. Mater Chem Phys 2010, 122: 507–511.
Tseng CF. Microwave dielectric properties of low loss microwave dielectric ceramics: A0.5Ti0.5NbO4 (A = Zn, Co). J Eur Ceram Soc 2014, 34: 3641–3648.
Zhang XH, Ma YH, Zhao CW, et al. High dielectric constant and low dielectric loss hybrid nanocomposites fabricated with ferroelectric polymer matrix and BaTiO3 nanofibers modified with perfluoroalkylsilane. Appl Surf Sci 2014, 305: 531–538.
Thomas S, Raman S, Mohanan P, et al. Effect of coupling agent on the thermal and dielectric properties of PTFE/Sm2Si2O7 composites. Compos Part A: Appl Sci Manuf 2010, 41: 1148–1155.
Wu SY, Huang YL, Ma CCM, et al. Mechanical, thermal and electrical properties of aluminum nitride/polyetherimide composites. Compos Part A: Appl Sci Manuf 2011, 42: 1573–1583.
Shen YP, Gu AJ, Liang GZ, et al. High performance CaCu3Ti4O12/cyanate ester composites with excellent dielectric properties and thermal resistance. Compos Part A: Appl Sci Manuf 2010, 41: 1668–1676.
Zheng L, Zhou J, Shen J, et al. TEOS surface modification of CLST ceramic particles for PTFE-based composites. J Mater Sci: Mater Electron 2018, 29: 17195–17200.
Park BH, Lee MH, Kim SB, et al. Evaluation of the surface properties of PTFE foam coating filter media using XPS and contact angle measurements. Appl Surf Sci 2011, 257: 3709–3716.
Gu JW, Guo YQ, Lv Z, et al. Highly thermally conductive POSS-g-SiCp/UHMWPE composites with excellent dielectric properties and thermal stabilities. Compos Part A: Appl Sci Manuf 2015, 78: 95–101.
Liu LP, Lv F, Li PG, et al. Preparation of ultra-low dielectric constant silica/polyimide nanofiber membranes by electrospinning. Compos Part A: Appl Sci Manuf 2016, 84: 292–298.
Subodh G, Pavithran C, Mohanan P, et al. PTFE/Sr2Ce2Ti5O16 polymer ceramic composites for electronic packaging applications. J Eur Ceram Soc 2007, 27: 3039–3044.
Sun YY, Zhang ZQ, Wong CP. Influence of interphase and moisture on the dielectric spectroscopy of epoxy/silica composites. Polymer 2005, 46: 2297–2305.
Varghese J, Nair DR, Mohanan P, et al. Dielectric, thermal and mechanical properties of zirconium silicate reinforced high density polyethylene composites for antenna applications. Phys Chem Chem Phys 2015, 17: 14943–14950.
Thomas S, Kavil J, Malayil AM. Dielectric properties of PTFE loaded with micro- and nano-Sm2Si2O7 ceramics. J Mater Sci: Mater Electron 2016, 27: 9780–9788.
Subodh G, Joseph M, Mohanan P, et al. Low dielectric loss polytetrafluoroethylene/TeO2 polymer ceramic composites. J Am Ceram Soc 2007, 90: 3507–3511.
Wu KT, Yuan Y, Zhang SR, et al. ZrTi2O6 filled PTFE composites for microwave substrate applications. J Polym Res 2013, 20: 223.
Luo FC, Tang B, Fang ZX, et al. Effects of coupling agent on dielectric properties of PTFE based and Li2Mg3TiO6 filled composites. Ceram Int 2019, 45: 20458–20464.
Jin SQ, Qiu X, Huang BY, et al. Dielectric properties of modified BNT/PTFE composites for microwave RF antenna applications. J Mater Sci: Mater Electron 2016, 27: 8378–8383.
Hu YX, Zhang YM, Liu H, et al. Microwave dielectric properties of PTFE/CaTiO3 polymer ceramic composites. Ceram Int 2011, 37: 1609–1613.
Manan A, Ullah Z, Ahmad S, et al. Phase microstructure evaluation and microwave dielectric properties of (1−x)Mg0.95Ni0.05Ti0.98Zr0.02O3−xCa0.6La0.8/3TiO3 ceramics. J Adv Ceram 2018, 7: 72–78.
Wu MJ, Zhang YC, Xiang MQ. Synthesis, characterization and dielectric properties of a novel temperature stable (1−x)CoTiNb2O8−xZnNb2O6 ceramic. J Adv Ceram 2019, 8: 228–237.
Hsiang HI, Chen CC, Yang SY. Microwave dielectric properties of Ca0.7Nd0.2TiO3 ceramic-filled CaO-B2O3-SiO2 glass for LTCC applications. J Adv Ceram 2019, 8: 345–351.
Cheng ZL, Ye F, Liu YS, et al. Mechanical and dielectric properties of porous and wave-transparent Si3N4-Si3N4 composite ceramics fabricated by 3D printing combined with chemical vapor infiltration. J Adv Ceram 2019, 8: 399–407.
Xu NX, Zhou JH, Yang H, et al. Structural evolution and microwave dielectric properties of MgO-LiF co-doped Li2TiO3 ceramics for LTCC applications. Ceram Int 2014, 40: 15191–15198.
Li ZH, Liu JS, Yuan Y, et al. Effects of surface fluoride-functionalizing of glass fiber on the properties of PTFE/glass fiber microwave composites. RSC Adv 2017, 7: 22810–22817.
Gorshkov N, Goffman V, Vikulova M, et al. Polytetrafluorethylene-based high-k composites with low dielectric loss filled with priderite (K1.46Ti7.2Fe0.8O16). J Appl Polym Sci 2019, 137: 48762.
Yuan Y, Li ZT, Cao L, et al. Modification of Si3N4 ceramic powders and fabrication of Si3N4/PTFE composite substrate with high thermal conductivity. Ceram Int 2019, 45: 16569–16576.
The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (Grant No. 51772267) and the Key R&D Program of Zhejiang Province (Grant No. 2019C05001).
About this article
Cite this article
Wang, H., Zhou, F., Guo, J. et al. Surface-modified Zn0.5Ti0.5NbO4 particles filled polytetrafluoroethylene composite with extremely low dielectric loss and stable temperature dependence. J Adv Ceram 9, 726–738 (2020). https://doi.org/10.1007/s40145-020-0409-2
- dielectric properties