Effects of CaTiO3 Loading on the Properties of PTFE/TiO2 Composites
- 1 State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, China
- 2 State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, China
- 3 State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, China
- 4 State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, China
- 5 State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, China
Abstract
In this paper, a detailed study was carried out on the PTFE reinforced with TiO2 and CaTiO3. The filler content of ceramic powder was a fixed value of 61 wt% and the content of CaTiO3 in PTFE matrix varied from 0 wt% to 16 wt% with a step size of 4 wt%. The effects of CaTiO3 loading on the density, moisture absorption, thermal expansion, microstructure and microwave dielectric properties were investigated. As CaTiO3 loading content increased from 0 wt% to 16 wt%, the thermal expansion initially displayed a sharp increase, and showed a slight enhancement when the content of CaTiO3 exceeded 12 wt%. The density experienced a continuous decrease with the addition of CaTiO3. The moisture absorption displayed a steady increase with the increasing CaTiO3 loading amount. The changing of dielectric constant (εr) and loss tangent (tanδ) were similar to that of the moisture absorption in a manner. Good dielectric properties with values of εr = 11.60, tanδ = 0.002 were obtained in the PTFE matrix with 16 wt% CaTiO3 and 45 wt% TiO2.
- Rajesh, S., Nisa, V.S., Murali, K.P. and Ratheesh, R. (2009) Journal of Alloys and Compounds, 477, 677-682. https://doi.org/10.1016/j.jallcom.2008.10.092
- Murali, K.P., Rajesh, S., Prakash, O., Kulkarni, A.R. and Ratheesh, R. (2009) Com-posites Part A: Applied Science and Manufacturing, 40, 1179-1185. https://doi.org/10.1016/j.compositesa.2009.05.007
- Chen, Y.-C., Lin, H.-C. and Lee, Y.-D. (2003) Journal of Polymer Research, 10, 247-258. https://doi.org/10.1023/B:JPOL.0000004620.71900.16
- Chen, Y.-C., Lin, H.-C. and Lee, Y.-D. (2004) Journal of Polymer Research, 11, 1-7. https://doi.org/10.1023/B:JPOL.0000021757.94577.a3
- Djokic, S.S. (2002) Modern Aspects of Electrochemistry. In: Conway, B.E. and White, R.E., Eds., Electroless Deposition of Metals and Alloys, Springer US, Boston, 51-133.
- Rajesh, S., Murali, K.P., Priyadarsini, V., Potty, S.N. and Ratheesh, R. (2009) Materials Science and Engineering: B, 163, 1-7. https://doi.org/10.1016/j.mseb.2009.04.011
- Yuan, Y., Zhang, S.R., Zhou, X.H. and Li, E.Z. (2013) Materials Chemistry and Physics, 141, 175-179. https://doi.org/10.1016/j.matchemphys.2013.04.043
- Gustafsson, A., Salot, R. and Gedde, U.W. (1993) Polymer Composites, 14, 421-429. https://doi.org/10.1002/pc.750140509
- Radhakrishnan, S. and Saini, D.R. (1994) Journal of Applied Polymer Science, 52, 1577-1586. https://doi.org/10.1002/app.1994.070521106
- Wu, K.-T., Yuan, Y., Zhang, S.-R., Yan, X.-Y. and Cui, Y.-R. (2013) Journal of Polymer Research, 20, 223. https://doi.org/10.1007/s10965-013-0223-4