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采用快速升温法,在相对较低的压力下制备聚碳酸酯(PC)/聚苯乙烯(PS)共混物的微孔发泡材料。获得的PC/PS共混物发泡材料的平均泡孔直径为4.3μm,泡孔密度为8.89×109个/cm3,而在相同条件下制得的PC和PS发泡材料的平均泡孔直径分别为28.6μm和143.8μm,泡孔密度分别为2.23×107个/cm3和3.6×105个/cm3。并研究PC、PS和PC/PS共混物的CO2吸附行为以及PC/PS共混物在不同温度下的泡孔形态,发现泡孔首先在PS相中成核并生长。
Microporous foams of polycarbonate (PC) / polystyrene (PS) blends were prepared at a relatively low pressure using a rapid warming method. The obtained PC / PS blend foamed material had an average cell diameter of 4.3 μm and a cell density of 8.89 × 10 9 cells / cm 3, while the average cell diameter of PC and PS foams prepared under the same conditions Respectively 28.6μm and 143.8μm, cell densities were 2.23 × 107cells / cm3 and 3.6 × 105cells / cm3, respectively. The CO2 adsorption behavior of PC, PS and PC / PS blends and the cell morphology of PC / PS blends at different temperatures were investigated. It was found that the cells nucleate and grow in PS phase first.