本发明属于乳化剂技术领域，本发明提供了一种复合乳化剂及其制备方法。本发明的复合乳化剂包含非离子乳化剂和阴离子乳化剂：阴离子乳化剂和非离子乳化剂的质量比为1~5:5~15。本发明还提供了一种包含复合乳化剂的水性环氧树脂乳液和涂料。本发明的复合乳化剂制备的水性环氧树脂乳液具有乳化剂用量小，乳液粒径小，储存稳定性好等优异性能；本发明的涂料具有优异的耐H2SO4腐蚀性能和耐中性盐雾性能。

The present invention belongs to the field of epoxy resin technology, and provides a multi ring aryl hyperbranched epoxy resin and a preparation method thereof. The preparation method comprises the following steps: conducting a branching polymerization reaction between a multi functional epoxy compound and a multi ring aryl diphenol under catalyst conditions to obtain a multi ring aryl hyperbranched epoxy resin; The mass ratio of multifunctional epoxy compounds, polycyclic aromatic diphenols, and catalysts is 100:20-60:0.01-0.02. The present invention also provides a photoluminescence solution containing the resin and an anti-corrosion coating. The polycyclic aromatic hyperbranched epoxy resin of the present invention significantly improves the medium resistance and barrier performance of the coating; Moreover, polycyclic aromatic hyperbranched epoxy resin has intrinsic fluorescence properties, which can predict the failure of steel anti-corrosion coatings; Polycyclic aromatic hyperbranched epoxy resins can also be used for the detection of metal ions.