自修复型端羟基聚丁二烯粘合剂体系的制备及性能

For the self-healing characteristics of energetic materials, two novel compounds, furfuryl-terminated polybutadiene (FTPB) and trifurfuryl propane (TFP) were designed and synthesized, and their structures were characterized. FTPB was used as main chain, N, N'-(1, 3-phenylene)bismaleimide (PDMI) was used as curing agent and TFP was used as chain extender to form the Diels-Alder reaction system, which can prepare the adhesive system with self-healing capacity and mechanical strength. The curing process of the adhesive system was characterized by FT-IR, which shows that the Diels-Alder reaction in the curing process was carried out by the peak change of characteristic functional groups. The mechanical properties and self-healing properties of the film were characterized by tensile test and SEM. The results show that the film with microcrack can be healed by the thermoreversible process, and the tensile strength of the film with the optimal addition ratio of 10% is 1.76 MPa and the heal efficiency is 88%.