通过拉伸试验、剥离试验、霉菌试验和盐雾试验等4项试验，研究了采用3种航空密封剂的异质材料胶接结构的拉伸性能、剥离强度、耐霉菌性能以及耐腐蚀性能，优选出综合性能好的航空密封剂。结果表明：采用HM109密封剂的胶接结构的拉伸性能较好；采用PS870密封剂的胶接结构的剥离强度较高；采用3种航空密封剂的胶接结构的耐霉菌性能均较好；采用PS870和HM109密封剂的胶接结构的耐腐蚀性能较好。在实际使用过程中，可根据性能指标要求，选择某一种性能较好的密封剂或综合性能较好的密封剂。

The tensile properties, peeling strength, mould resistance and corrosion resistance of the bonded structures of dissimilar materials with three aviation sealants were studied through four tests, including tensile test, peeling test, mould test and salt spray test. The aviation sealants with good comprehensive properties were optimized. The results showed that the bonded structure with HM109 sealant had good tensile properties. The bonded structure with PS870 sealant had high peeling strength. The bonded structures with three aviation sealants all had good mould resistance. And the bonded structures with PS870 and HM109 sealants had good corrosion resistance. In actual use, a certain sealant with a good property or with better comprehensive performance could also be selected according to the performance index requirements.