Microcellular region

Foam density remained constant ( 1.0g/cm ) at Tf -h AT, < 140°C. This region was termed the nanocellular region since the cell size was nanometer in size and larger cell density (10 " cells/cm ) was achieved in foamed samples. The density of foamed samples abruptly decreased beyond a certain Tf, and then attained a minimum constant value of approximately 0.3g/cm as the reduced temperature (Tf -h AJg) increased above 150°C (a microcellular region). In this region, the cell size increased ( 100 pm) while a significant reduction was noticed in the value of cell density... 

Enhancing Productivity of Solid-State Microcellular Panel Production by Partial Gas Saturation in the Retrograde Region... 

Figure 3 Relative density as a function of foaming temperature at various saturation conditions and 0 day desorption. The bold circles represent the relative densities of microcellular ABS samples prepared with partial saturation in the retrograde region. The hollow circles represent the relative densities of microcellular ABS samples prepared with equilibrium saturation in the glassy region.

ENHANCING PRODUCTIVITY OF SOLID-STATE MICROCELLULAR ABS PANEL PRODUCTION BY PARTIAL GAS SATURATION IN THE RETROGRADE REGION. 

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