Aqueous Processing of Mullite‐Containing Green Sheets

Abstract

An aqueous-based slurry for tape-casting mullite sheets was studied that is suitable for electronic packaging. A latex binder was used to attain the necessary organic content in the tape while maintaining a low slurry viscosity. The colloidal stability of these complex slurries was characterized by electrokinetic sonic amplitude (ESA) measurements and sedimentation experiments. Control of dispersion stability required the addition of a polyelectrolyte. Suitability of the aqueous-based tapes for multilayer packaging was evaluated by measuring deformation during lamination and by optimizing conditions such that binder loading and total deformation were minimized. [

Preparation of the Pb(Mg1/3Nb2/3)O3 films by aqueous tape casting

“…21 Similarly, Ushifusa and Cima determined the isoelectric point of B-60A at about pH 2 in absence of any electrolyte. 14 Fig . 3 shows the viscosity of the hydroxypropyl methylcellulose solution as a function of concentration.…”

“…13 Similarly, Ushifusa and Cima developed latex-based slurry for tape casting of mulliteglass composites suitable for electronic packaging. 14 Thermal analysis and microstructural characterization of PMN films prepared by aqueous tape casting in the presence of acrylicbased binder was studied previously by Ş akar-Deliormanlı et al 17 The aim of the current work is to prepare aqueous-based PMN slurries to use in tape casting process and investigate the final properties of the PMN films. The films were manufactured using a doctor blade having the gap height of 30-500 m. The results of the study showed that it is possible to prepare high quality PMN films based on aqueous formulations.…”

“…10,11 The development of aqueous slurry formulations for the tape casting has been studied by many researchers for different ceramic materials. 3,10,[12][13][14][15][16] Doreau et al investigated the processing of aqueous tape casting of alumina in the presence acrylic emulsion binders without using any additional organic additives in the system such as plasticizer or defoamer. 12 Smay and Lewis developed an aqueous system for the tape casting of lead zirconate titanate.…”

Water‐Based Tape Casting of Alumina and Mullite Substrates for Crystalline Silicon Solar Cell Development

“…A well known example of a solvent-soluble binder is polyvinyl butyral (PVB), water-soluble binders are poly vinyl alcohol (PVA), latexes or methyl cellulose (MC). [10][11][12][13][14] Few examples are known were a natural compound is used in the tape casting process. [15] In this paper we discuss the fabrication of mullite substrates by water-based tape casting for the development of polycrystalline solar cells, using a commercial acryl latex binder.…”

Composed Mullite Substrates for the Development of Crystalline Silicon Solar Cells

“…The technique uses a colloidal suspension containing a binder, that is either solvent or water soluble. [10,11] Although water-based tape casting would be preferred from an environmental point of view, solvent based tape cast processes are considered to be more robust and easier to control.…”