At higher temperature, polymers tend to degrade. If we blends a ceramic with calcination temperature more than 1000 C with a polymer, will calcination temperature be reduced?
I presume your so called ceramic is an oxide product.
Calcination is a treatment to transform carbonates, convert sub oxides to complete oxides, when you a mixing raw precursor oxide powders.
Calcination temperature can be reduced if your precursor powders are fine nano particles.
You normally add a binder (poly vinyl alcohol) a very small content, to make a sintered ceramic disc, and binder burns out, and you end up with a well sintered product which is a dense ceramic.
I think while calcination, I would not blend with any polymer material, and even I introduce a polymer material, I would like to drive it out. Do a thorough residual C, H, N analysis, and avoid any residual carbon content.
K. Sreenivas
I presume your so called ceramic is an oxide product.
Calcination is a treatment to transform carbonates, convert sub oxides to complete oxides, when you a mixing raw precursor oxide powders.
Calcination temperature can be reduced if your precursor powders are fine nano particles.
You normally add a binder (poly vinyl alcohol) a very small content, to make a sintered ceramic disc, and binder burns out, and you end up with a well sintered product which is a dense ceramic.
I think while calcination, I would not blend with any polymer material, and even I introduce a polymer material, I would like to drive it out. Do a thorough residual C, H, N analysis, and avoid any residual carbon content.
K. Sreenivas
Dear Varun, some years ago with my colleagues we explored the possibilities of preparing feedstock fomulations for ceramic injection molding. Aluminum oxide or alumina/ATH mxtures were used as mineral fillers. We have rather observed the effect of the mineral on the decomposition temperature of th epolymer than vice versa.
Article Development of Ceramic Feedstock for Powder Injection Molding
If the goal of calcination procedure is the exit of L.O.I contents, so the polymer can help the procedure and reduce the calcination temperature. This is because of burning the polymer at lower tempeartures that leads to porous structure, so the gases can exit easily from the ceramic.
The answers are already given. Calcination is the temperature at which the pure product is obtained. Phase transformation also takes place. For organoceramic route of synthesis the organic part is destroyed and required phase phase appears. You can not blend with polymer before calcination.
Dear Varun, further to answers already given organo-ceramic route of synthesis may also only lead to the production of polymer ceramic composites at the various temperatures of the blending polymer melt. Calcination is the decomposition of salts to their oxides, etc, and other products. The effect of this calcination on the sintering temperature on the oxide, nitride, carbide,etc may then be considered
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