Measurement on Compressive Strength and Permeability Coefficient of Plastic Microspheres

The penetrating performance of D₂ in plastic microspheres was studied. The compressive strength and the permeability coefficients of plastic microspheres were obtained by filling D₂ wtih different pressures in hollow plastic microspheres at 20, 40 and 60 ℃, respectively. The compressive strength of plastic microspheres obviously drops when the temperature rises within a small range. The permeability coefficients of plastic microspheres increase in an exponential curve when the temperature rises.