Dielectric properties of sodium fluoride added kaolinite at different firing temperatures

Zipkin, Hiimeyra; Israel, Lina; Güler, Sönmez; Güler, Çetín

doi:10.1016/j.ceramint.2005.12.003

Cited by 11 publications

(5 citation statements)

References 23 publications

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“…The production technology of glass foams is a well-established procedure not only for obtaining products having a unique combination of properties but also for recycling growing quantities of glass waste, in line with Directive 2008/98/EC [3][4][5][6][7][8][9]. Glass recycle in glass foams allows energy saving, typically due to low temperature of viscous flow, as well as reduces the need for natural raw materials.…”

Section: Introductionmentioning

confidence: 99%

“…Egg shells, separately collected as waste from alimentary local industry, have been selected as foaming agent because they are constituted by 95 wt% of CaCO 3 , in turn known to produce, by decomposition, CO 2 gas as pore former. The use of egg shells represents an important economic advantage, since the costs of glass foams are also affected by the type of the used foaming agents [3].…”

Section: Introductionmentioning

confidence: 99%

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Design of glass foams with low environmental impact

Mugoni

Montorsi

Siligardi

et al. 2015

Ceramics International

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of glass foams with low environmental impact

Mugoni

Montorsi

Siligardi

et al. 2015

Ceramics International

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“…The evolved gas, produced from the decomposition or oxidation of foaming agents, leads to a multitude of initially spherical small bubbles which, under increasing gas pressure, expand to a foam structure of polyhedral cells that, after cooling of the glass, constitute the pores in the glass foam. Glass foam production technology has been established as a valid method not only to obtain products having a unique combination of properties but also for recycling growing quantities of glass waste, in line with Directive 2008/98/EC . Successful glass recycle to prepare foam glass allows energy saving, typically due to lower temperature for viscous flow, as well as reduces the need for natural raw materials.…”

Section: Introductionmentioning

confidence: 99%

Glass–Ceramic Foams from Borosilicate Glass Waste

Taurino

Lancellotti

Barbieri

et al. 2014

Int J of Appl Glass Sci

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In this study, we reported the studies on a glass-ceramic foam with wollastonite and cristobalite micrometric crystals prepared by sintering a borosilicate glass waste with organic binder as foaming agent. The waste glass, coming from the dismantling of washing machine, was characterized by high CaO content and low-temperature sinterability. The effect of the temperature on the sinter-crystallization ability of the borosilicate glass waste was followed with thermal analysis, heating microscopy, and electron scanning microscopy (ESEM) observations. Additionally, the effect of temperature on the evolution of crystalline phases and density variation was monitored with XRD and density measurements. The softening started at 800°C and crystallization at 845°C to be completed at 900°C with a linear expansion of 38-40% in the range 850-900°C. Wollastonite and cristobalite were identified as crystalline phases in variable proportions dependently upon temperature. No crack evidence was found at high ESEM magnification even though cristobalite crystals were present. The final products showed a total porosity around 78-79% and an apparent density of about 0.5 g/cm 3 , in line with common porous closed-cell glass foams used for thermal insulation.

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“…The dielectric constants of some food products increase with increasing sodium ion content . However, sodium ions do not contribute to conduction, and the charge carrier are only fluoride ions . However, to consider the effect of temperature, the temperature was set to 25 °C in this study.…”

Section: Resultsmentioning

confidence: 99%