累托石的表面性质直接影响其在聚合物中的分散性,进而对其复合材料的结构与性能有很大的影响.通过反气相色谱法,采用非极性和极性探针研究累托石(REC),十二烷基二甲基苄基溴化铵处理的累托石(12-OREC)和十六烷基三甲基溴化铵处理的累托石(16-OREC)以及聚氨酯(TPU)的表面色散能和表面酸碱性,分析了REC,12-OREC,16-OREC和TPU的表面性质与其复合材料微观结构的关系.结果发现:REC表面色散能较高,表面酸性较强,在TPU基体中的分散性较差;改性后的12-OREC、16-OREC色散能明显降低,且表面呈一定碱性,在TPU中的分散性明显改善;12-OREC与TPU的色散能较接近,酸碱作用参数较匹配,在TPU基体中的分散性更优.
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