抄録
The effect of organic binder adsorption on the rheological behavior of aqueous silicon nitride suspensions was studied to find the optimum powder characteristics for forming. The adsorption isotherms of polyvinylalcohol (PVA) in the suspensions were of the Langmuir type. The Si-OH group on the surface of silicon nitride particles decreased markedly due to the adsorption of PVA. This suggested the adsorption on the Brønsted acid points of the particles. The viscosity of the suspensions was controlled by the adsorption of organic binder on silicon nitride particles. The low binder affinity powder was suitable for preparing a suspension with low viscosity at high binder content in the suspension.
