Lightweight Bi-Layered Ceramic Tiles for Novel Applications

Abstract:

The excellent properties of porcelain stoneware tiles make them ideal materials for floor covering. However, their high density limits their use in novel applications, where low weight and low thermal conductivity are required. In this work, the production of lightweight bi-layered ceramics, with suitable mechanical resistance and low thermal conductivity in comparison with commercial tiles, is reported. The weight and thermal conductivity reduction was achieved by means of porogen incorporation. The possibility of using polypropylene (PP) as a pore forming agent was evaluated. PP completely burns out at relatively low temperatures with no emission of hazardous gases, and does not induce defects in the ceramic pieces. Results demonstrate that porosity (pore volume, number and area) can be easily controlled by adjusting the porogen amount (5-15 wt.%). The reduction in weight (7.5%) and thermal conductivity (up to five times) in comparison to commercial stoneware tiles might extend their use to novel applications.

• Periodical: Advances in Science and Technology (Volume 91)
• Pages: 82-87
• DOI: https://doi.org/10.4028/www.scientific.net/AST.91.82
• Online since: October 2014
• Authors: Rui M. Novais*, Maria P. Seabra, João A. Labrincha
• Keywords: Bi-Layered Ceramic Bodies, Mechanical Property, Porosity, Thermal Conductivity

References

[1] X. Cui, H. Zhang, S. Wang, L. Zhang, J. Ko, Design of lightweight multi-material automotive bodies using new material performance indices of thin-walled beams for the material selection with crashworthiness consideration, Materials and Design 32 (2011).

DOI: 10.1016/j.matdes.2010.07.018

[2] X. Huang, R. Ranade, Q. Zhang, W. Ni, V.C. Li, Mechanical and thermal properties of green lightweight engineered cementitious composites, Constrution and Building Materials 48 (2013) 954-960.

DOI: 10.1016/j.conbuildmat.2013.07.104

[3] C. Barreneche, A.I. Fernández, M. Niubó, J.M. Chimenos, F. Espiell, M. Segarra, C. Solé, L.F. Cabeza, Development and characterization of new shape-stabilized phase change material (PCM)–Polymer including electrical arc furnace dust (EAFD), for acoustic and thermal comfort in buildings, Energy and Buildings 61 (2013).

DOI: 10.1016/j.enbuild.2013.02.026

[4] Directive 2010/31/eu of the European parliament and of the council of 19 May 2010 on the energy performance of buildings. Available from: http: /eur-lex. europa. eu/homepage. html.

[5] R.M. Novais, M.P. Seabra and J.A. Labrincha, Ceramic tiles with controlled porosity and low thermal conductivity by using pore-forming agents, Accepted for publication in Ceramics International (2014).

DOI: 10.1016/j.ceramint.2014.03.163

[6] H. Bockhorn, A. Hornung, U. Hornung, D. Schawaller, Kinetic study on the thermal degradation of polypropylene and polyethylene, Journal of Analytical and Applied Pyrolysis 48 (1999) 93-109.

DOI: 10.1016/s0165-2370(98)00131-4

[7] S.A. Hedrick, S.S.C. Chuang, Temperature programmed decomposition of polypropylene: in situ FTIR coupled with mass spectroscopy study, Thermochimica Acta 315 (1998) 159-168.

DOI: 10.1016/s0040-6031(98)00283-4