XIV
h
International Conference on Molecular Spectroscopy, Białka Tatrzańska 2017
190
T1: P–57
The influence of kaolin on the panel cathode ray tubes glass structure
M. Kosmal
1
, Natalia Pałczynska
2
, Manuela Reben
2
1
Institute of Ceramics and Building Materials, Division of Glass and Building Materials in Cracow,
Poland, e-mail: natalia.palczynska@wp.pl
2
AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Cracow,
Poland
The current work investigated the formulation of glasses from recycled panel Cathode Ray
Tubes (CRTs) waste modified by kaolin. The goal of the work was to investigate the influence
of Al
2
O
3
on the structural changes of glasses, as well as their crystallization ability. The
crystallization of CRT panel glass with various Al
2
O
3
was studied by means of a non-isothermal
and thermal analysis. The crystalline phase was determined by the X-ray diffractometry. The
micro-structure of the samples was studied by SEM technique. The structural changes upon
alumina oxide addition were studied by means of 27 Al MAS NMR and FTIR spectroscopy. On
the basis of NMR studies it has been confirmed that aluminum ions appeared in the glass
structure only in tetrahedral coordination. From the FTIR spectra the narrowing of the bands at
1022 and 1027 cm
–1
was observed, which may indicate on the ordering of glass network. The
increase of Al
2
O
3
content caused the shift of the glass transition temperature towards higher
temperature, simultaneously the maximum of crystallization temperature reached higher values.
Analysis of the local atomic interactions in the structure of glasses was used to explain the
course of the crystallization. The linear expansion coefficients of glasses as a function of
temperature were measured.
Keywords: CRT panel glass waste; kaolin; NMR studies; gradient furnace
Acknowledgment
This work was supported by the statutory funds AGH University of Science and Technology Department of
Materials Science and Ceramics AGH number WIMiC No 11.11.160.365 in 2017.
References
[1] I. Grelowska, M. Kosmal, M. Reben, P. Pichniarczyk, M. Sitarz , Z. Olejniczak, J. Mol. Struct. 1126
(2016) 265.
[2] M. Sitarz, Z. Fojud, Z. Olejniczak, J. Mol. Struct. 924–926 (2009) 107.
[3] F. Andreola, L. Barbieri, E. Karamanova, I. Lancelloti, M. Pelino, Ceram. Int. 34 (2008) 1289.
XIV
h
International Conference on Molecular Spectroscopy, Białka Tatrzańska 2017
191
T1: P–58
Effect of addition of alkali metal oxides on structure
and selected parameters of the ceramic glazes
form the SiO
2
-Al
2
O
3
-CaO-MgO-R
2
O system
Janusz Partyka
1
, Magdalena Leśniak
2
, Katarzyna Pasiut
1
,
Mirosław Bućko
1
, and Piotr Jeleń
1
1
Department of Ceramic and Refractories, AGH University od Science and Technology, Mickiewicza
30, 30-059 Krakow, Poland, e-mail: partyka@agh.edu.pl
2
Department od Silicate Chemistry and Macromolecular Compounds, AGH University od Science
and Technology, Mickiewicza 30, 30-059 Krakow, Poland
In the scientific literature there is no unequivocal opinion on the role of alkali metal oxides
in ceramic glazes. Part of researchers consider that these oxides have an almost identical
influence on the properties of ceramic glazes. For this reason, in Seger compositions of glazes,
the total contents of R
2
O oxides it appear most often. The rest represent an opinion about the
various functionalities of these oxides. In these studies, ceramic glazes from the SiO
2
-Al
2
O
3
-
CaO-MgO-R
2
O system were applied, where the only variable was the type of alkali metal cation
(Na
+
, K
+
or Li
+
). The article presents the results of the internal structures and thermal
transformation which are opposed with chosen technological parameters such as characteristic
temperatures, glossy and smoothness of the surface after firing.
Keywords: ceramic glaze; structure; infrared; smoothness
Acknowledgment
This research work has been carried out thanks to financing in the framework of NCBiR (Polish National
Centre for Research and Development) programme No. N N508 477734 and PBS1/B5/17/2012
References
[1] Vogel, Glass chemistry, The American Ceramic Society, Inc., 1985, ISBN 978-3-540-57572-6
[2] J.R. Taylor, A.C. Bull, Ceramics Glaze Technology, Pergamon Press, Oxford, 1986.
[3] K. Shaw, Ceramic Glazes, Elsevier Publishing Co. Ltd, 1971.
[4] R L Dumitrache, I Teoreanu, A Volceanov, J. Eur. Ceram. Soc. 27 (2–3) (2007) 1697.
[5] L. Fröberg, rozprawa doktorska: Factors affecting raw glaze properties, Åbo Akademi, Åbo, 2007.
[6] C.W. Parmalee, Ceramic Glazes, Cahners Books, Boston, 1973.
[7] P. Yaowakulpattana, T. Wakasugi, S. Kondo, K. Kadono, Eng. J. 19(3) (2015) 21.
[8] J.F. Mejia, Understanding the role of fluxes in single-fire porcelain glaze development, Alfred
University, New York, 2004.
[9] D. De Sousa Menesesa, M. Eckesa, L. del Campoa, C. N. Santos, Y. Vaills, P. Echegut, Vib.
Spectrosc. 65 (2013) 50.
[10] M. Sitarz, W. Mozgawa, M. Handke, J. Mol. Struct. 404 (1997) 193.
[11] M. Sitarz, M, Handke, W. Mozgawa, E. Galuskin, I. Galuskina, J. Mol. Struct. 555 (2000) 357.
[12] P. Colomban, J. Am. Ceram. Soc. 88(2) (2005) 390.
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