Abstract: Montmorillonite was changed to organophilic with the hexadecyltrimethy lammonium bromide and dodecyl trimethy ammonium bromides, and organic montmorillonite was obtained. OMMT/E-51 composite modification for waterborne polyurethane was prepared. The effect of OMMT, DMPA and E-51 mass percentage on OMMT/E-51 composite modificationfor waterborne polyurethane were studied. The results show that the the mass fraction of OMMT was 1.5%, the mass fraction of DMPA was 4.0%，the mass fraction of E-51 was 4.0%，the emulsion and adhesive film possessed a good performance, the water absorption is 5.9%, the water contact angle is 98°, the tensile strength is 32 MPa, the elongation at break is 571%. 

Key words: Montmorillonite(OMMT), Epoxy resin, Composite modification, Waterborne polyurethane

摘要： 用十六烷基三甲基溴化铵，十二烷基三甲基溴化铵，对微晶高岭石进行有机化处理，得到有机微晶高岭石；以有机微晶高岭石、环氧Ｅ－５１复合改性，制备了有机微晶高岭石／环氧树脂复合改性的水性聚氨酯（ＯＭＭＴ／Ｅ－５１ＷＰＵ）。研究了有机微晶高岭石、２，２－二羟甲基丙酸和环氧Ｅ－５１的质量分数对乳液及涂膜物化性能的影响。结果表明：当ｗ（ＯＭＭＴ）＝１．５％，ｗ（ＤＭＰＡ）＝４．０％，ｗ（Ｅ－５１）＝４．０％，乳液及膜的物化性能较好，乳液呈透明蓝光，吸水率为５．９％，接触角９８°，拉伸强度３２ＭＰａ，断裂伸长率５７１%

关键词: 微晶高岭石 , 环氧树脂 , 复合改性 , 水性聚氨酯