以填充纳米二氧化硅改性的聚二甲基硅氧烷(PDMS)渗透汽化膜对丙二醇单甲醚/水的混合体系进行汽化分离研究,结果表明,用于分离质量分数为0.5%～10%丙二醇甲醚/水溶液,103甲基室温嵌段硫化硅橡胶(103-PDMS)膜比107室温硫化硅橡胶(107-PDMS)膜分离性能好,通量增加一倍,分离系数也有所提高.随着SiO2添加量的增加,分离因子先增加后降低,通量单调增加,分离因子最大可达到16.88,对应通量为45.55 g/m2·h.纳米二氧化硅填充量为1.2‰相对于PDMS质量分数时,分离效果最好.
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