About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Enhancing Recycling and Reuse of Secondary Materials to Support a Circular Economy
|
| Presentation Title |
Glass Foams Produced from Soda-Lime Glass Waste and Metallic Hydroxides as Foaming Agents |
| Author(s) |
Evaldo Toniolo Kubaski, Robson Couto da Silva, Maria Fernanda Rosa, Giulia de Souza Antero |
| On-Site Speaker (Planned) |
Evaldo Toniolo Kubaski |
| Abstract Scope |
Glass foams have great potential for several technological applications, for example, thermal or acoustic insulators and filters. We have been studying the development of glass foams based on soda‐lime glass waste and NaOH, Ca(OH) 2 and Al(OH) 3 as foaming agents. These foaming agents have the advantage of releasing steam during foaming, without releasing greenhouse gases into the environment. Conventional foaming agents (e.g. carbon black, carbonates, and sulfates) can release CO2 or other greenhouse gases. Glass foams presented bulk density of 0.16 g/cm3 with maximum porosity of 92%, flexural strength of 773.83 kPa and thermal conductivity at 25°C of 0.046 W/m.K; these values are in agreement with those values found for commercial glass foams. The compositions of glass foam under study are promising candidates for application in buildings as thermal insulation boards. |