Preparation of Porous Glass-Based Thick Film Using Diffusion-Induced Phase Separation from Scrap Glass

• Published in: Journal of the American Ceramic Society Vol. 97; no. 10; pp. 3128 - 3134
• Main Authors: Zhang, Yabin, Cao, Xu, Fan, Wenbin, Wang, Shaodi, Xiao, Changfa
• Format: Journal Article
• Language: English
• Published: Columbus Blackwell Publishing Ltd 01-10-2014; Wiley Subscription Services, Inc
• Subjects: Ceramic sintering; Diffusion; Glass; Heat treating; Phase transitions; Porosity; Temperature effects
• ISSN: 0002-7820; 1551-2916
• DOI: 10.1111/jace.13104

The porous glass thick film was fabricated by the diffusion‐induced phase separation and the sintering technique from scrap glass, polyvinylidene fluoride, and dimethylacetamide (DMAc). Pores formed due to the dissolution of DMAc in water. As heat treatment temperature increases, densification of porous glass was gradually enhanced while the pore channels were maintained. Porosity data of ~62% and 55% were obtained at 700°C and 800°C, respectively. The pore size diameters were 91.1 μm (700°C) and 90.8 μm (800°C) separately. The porous materials showed acid durability partially because flower‐like crystals were dissolved in 1M HCl solution. The process reported in this paper provided a simple method to prepare porous glass under one‐step calcinations at low temperature and was helpful for the reuse technology of scrap glass.