Espumas de vidrio y recubrimientos poliméricos a base de butiral de polivinilo obtenidos a partir de desechos de vidrio laminado y cenizas volantes

Cristian Rodríguez; Ángel Manuel Meléndez

doi:10.17533/udea.rcm.342055

Authors

Cristian Rodríguez Industrial University of Santander
Ángel Manuel Meléndez Industrial University of Santander

DOI:

https://doi.org/10.17533/udea.rcm.342055

Keywords:

circular economy, laminated glass, fly ash, polymeric coating, glass foam

Abstract

Herein, it was determined that a combination of mechanical and chemical treatments performed on laminated glass waste leads to complete separation of its components, tempered glass and polyvinyl butyral (PVB). Thus, it was possible to recover and recycle both components to generate value-added products. On the one hand, ethanol was chosen as the suitable solvent to develop corrosión resistant coatings composed of PVB. Aluminum oxide microparticles were added to enhance the corrosion resistant capacity of PVB. Thereby, PVB-based films were deposited on 1018 steel substrates by spin-coating technique. Scanning electron microscopy observations revealed that the coatings were homogeneous and crack-free. The corrosion behavior of these coatings in 3.0% NaCl solution was investigated by electrochemical impedance spectroscopy measurement. The charge-transfer resistance of PVB coating is at least two orders of magnitude higher than that of coatings composed of Al2O3 microparticles loaded PVB. These results indicate that the incorporation of Al2O3 has a detrimental effect on PVB coating. On the other hand, thermal analysis were carried out on mixtures of fly ash, silicon carbide and the recovered glass in order to establish the conditions for obtaining glass foams. The degree of porosity for the obtained materials was determined and compression tests were also performed. The glass obtained at 950 °C could be a promising porous material for thermal insulation applications.

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Author Biographies

Cristian Rodríguez, Industrial University of Santander

Metallurgical Engineer, Industrial University of Santander, GIMBA ‒ CMN, Guatiguará Research Headquarters, Piedecuesta, Santander, Colombia.

Ángel Manuel Meléndez, Industrial University of Santander

PhD in Chemical Sciences, Industrial University of Santander, GIMBA ‒ CMN, Guatiguará research headquarters, Piedecuesta, Santander, Colombia.

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