Acrylic co-polymer emulsion binders for green machining of ceramics

Manufacturing of complex shaped ceramic materials is becoming very complica ted due to the difficulties involved in the machining of ceramics. Therefor e green machining of pressed forms is gaining more attention in the ceramic industry. In this communication acrylic-based co-polymer emulsions were pr epared and used as binders in the ceramic materials such as Lanthanum chrom ite or strontium chromite. These were then pelletized. The green density an d green strength of these pellets were determined. The acrylic co-polymers were characterized by H-1 NMR spectroscopy to ensure the absence of unreact ed monomer. Glass transition temperature (Tg) of all the co-polymers was ca lculated theoretically and their effect on the green strength of the cerami c-binder composites has been studied. (C) 2000 Elsevier Science Ltd. All ri ghts reserved.