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Influence of additives on the crystallization and thermal conductivity of container glass cullet for foamed glass preparation
Influence of additives on the crystallization and thermal conductivity of container glass cullet for foamed glass preparation
- Source :
- Ceramics International. 47:32867-32873
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Foamed glass preparation is a complex combination of reactions, greatly influenced by the composition of the used glass and often hindered by simultaneous crystallization. The crystallization phenomenon is undesirable in foamed glass production since it decreases the quality of the final product. In this work the influence of different types of additives (foaming agents, flux agents, crystallization inhibitors and nucleating agent) on the crystallization of waste container glass and properties of the sintered samples (density and thermal conductivity) was studied. Results of our study confirmed partial crystallization during sintering stage. We found that waste container glass manifests complex crystallization with the formation of four main crystalline phases, which can be inhibited with the addition of fluxing agents (B2O3 and borax). Moreover, here we show that prevention of the crystallization can lead to a significant decrease of the thermal conductivity.
- Subjects :
- Glass recycling
Glass production
Materials science
Borax
business.industry
Process Chemistry and Technology
Nucleation
Sintering
Foaming agent
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
law.invention
chemistry.chemical_compound
Thermal conductivity
Chemical engineering
chemistry
law
Materials Chemistry
Ceramics and Composites
Crystallization
business
Subjects
Details
- ISSN :
- 02728842
- Volume :
- 47
- Database :
- OpenAIRE
- Journal :
- Ceramics International
- Accession number :
- edsair.doi...........74d0636432237fa6a59908b732e5f328
- Full Text :
- https://doi.org/10.1016/j.ceramint.2021.08.183