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·198· 精细化工 FINE CHEMICALS 第 40 卷

远高于 PMS，且残余阻力系数为 10.409，封堵率达 （4）物模调驱实验结果表明，核壳聚合物微球
90.39%。主要原因是 PMS@SiO 2 的 SiO 2 外壳不仅可 PMS@SiO 2 具有良好的调驱性能，封堵率可达
为微球提供一定的机械强度，增强其在孔喉处的承 90.39%，采收率增幅为 34.02%。
压能力，而且 SiO 2 具有疏水性，可改变岩石表面的
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