Microcell Distribution Index: A Quantitative Parameter for Characterization of Microcellular Distribution

Microcellular materials are characterized by the average cell diameter and cell density. The properties of microcellular foam also depend upon the pattern of cell distribution in matrix. In absence of any quantitative parameter, only qualitative or semi – quantitatively characterization of cell morphology is possible. In this paper, Microcell Distribution Index (MDI), a novel parameter is proposed for characterization of cell morphology. MDI value close to 1.0 is a representative of uniformity in cell size whereas MDI values higher than 1.0 shows broader cell size distribution. Multimodality is usually observed in microcell distribution pattern. Microcellular injection molded specimens of polystyrene were analyzed for effect of molding parameters over microcell distribution.

کلیدواژه ها:

Microcellular Foam ، Cell dia and Celldensity ، Cell Distribution ، Multimodality